CN107824210B - 一种氮掺杂介孔碳包裹的二氧化钛复合光催化剂及其制备方法和应用 - Google Patents
一种氮掺杂介孔碳包裹的二氧化钛复合光催化剂及其制备方法和应用 Download PDFInfo
- Publication number
- CN107824210B CN107824210B CN201710830931.8A CN201710830931A CN107824210B CN 107824210 B CN107824210 B CN 107824210B CN 201710830931 A CN201710830931 A CN 201710830931A CN 107824210 B CN107824210 B CN 107824210B
- Authority
- CN
- China
- Prior art keywords
- nitrogen
- composite photocatalyst
- mesoporous carbon
- doped mesoporous
- titanium dioxide
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 title claims abstract description 87
- 239000011941 photocatalyst Substances 0.000 title claims abstract description 43
- 239000002131 composite material Substances 0.000 title claims abstract description 39
- 239000004408 titanium dioxide Substances 0.000 title claims abstract description 34
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 28
- 238000002360 preparation method Methods 0.000 title claims abstract description 10
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims abstract description 50
- 239000000463 material Substances 0.000 claims abstract description 29
- 239000012298 atmosphere Substances 0.000 claims abstract description 20
- 238000006243 chemical reaction Methods 0.000 claims abstract description 17
- 238000002156 mixing Methods 0.000 claims abstract description 15
- 239000010936 titanium Substances 0.000 claims abstract description 11
- 230000015556 catabolic process Effects 0.000 claims abstract description 9
- 238000006731 degradation reaction Methods 0.000 claims abstract description 9
- 239000013110 organic ligand Substances 0.000 claims abstract description 7
- 239000012855 volatile organic compound Substances 0.000 claims abstract description 7
- 239000011259 mixed solution Substances 0.000 claims abstract description 3
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 claims description 25
- 239000013086 titanium-based metal-organic framework Substances 0.000 claims description 17
- 238000000034 method Methods 0.000 claims description 16
- 239000002244 precipitate Substances 0.000 claims description 16
- 238000010438 heat treatment Methods 0.000 claims description 12
- 150000003608 titanium Chemical class 0.000 claims description 11
- 238000001291 vacuum drying Methods 0.000 claims description 11
- GPNNOCMCNFXRAO-UHFFFAOYSA-N 2-aminoterephthalic acid Chemical compound NC1=CC(C(O)=O)=CC=C1C(O)=O GPNNOCMCNFXRAO-UHFFFAOYSA-N 0.000 claims description 10
- 239000000203 mixture Substances 0.000 claims description 10
- 238000001816 cooling Methods 0.000 claims description 8
- -1 polytetrafluoroethylene Polymers 0.000 claims description 8
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 8
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 8
- 238000005406 washing Methods 0.000 claims description 8
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 7
- 239000011261 inert gas Substances 0.000 claims description 7
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 claims description 6
- 239000007789 gas Substances 0.000 claims description 6
- 230000001590 oxidative effect Effects 0.000 claims description 6
- 238000000926 separation method Methods 0.000 claims description 6
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 claims description 2
- 230000000593 degrading effect Effects 0.000 claims 4
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 claims 2
- 239000003054 catalyst Substances 0.000 abstract description 23
- 238000001179 sorption measurement Methods 0.000 abstract description 14
- 230000003647 oxidation Effects 0.000 abstract description 8
- 238000007254 oxidation reaction Methods 0.000 abstract description 8
- 230000003197 catalytic effect Effects 0.000 abstract description 5
- 238000005530 etching Methods 0.000 abstract description 5
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 238000001035 drying Methods 0.000 abstract description 2
- 230000000694 effects Effects 0.000 abstract description 2
- 238000000746 purification Methods 0.000 abstract description 2
- 238000012546 transfer Methods 0.000 abstract description 2
- 239000010953 base metal Substances 0.000 abstract 1
- 238000001027 hydrothermal synthesis Methods 0.000 abstract 1
- 239000002184 metal Substances 0.000 abstract 1
- 229910052751 metal Inorganic materials 0.000 abstract 1
- 239000013384 organic framework Substances 0.000 abstract 1
- 230000001699 photocatalysis Effects 0.000 description 16
- 238000000197 pyrolysis Methods 0.000 description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 239000012621 metal-organic framework Substances 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000013033 photocatalytic degradation reaction Methods 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 239000012299 nitrogen atmosphere Substances 0.000 description 2
- 238000013032 photocatalytic reaction Methods 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 125000003277 amino group Chemical group 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000003933 environmental pollution control Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 231100000956 nontoxicity Toxicity 0.000 description 1
- 239000002957 persistent organic pollutant Substances 0.000 description 1
- 238000007146 photocatalysis Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000006798 recombination Effects 0.000 description 1
- 238000005215 recombination Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/30—Catalysts, in general, characterised by their form or physical properties characterised by their physical properties
- B01J35/39—Photocatalytic properties
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/8668—Removing organic compounds not provided for in B01D53/8603 - B01D53/8665
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J21/00—Catalysts comprising the elements, oxides, or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium, or hafnium
- B01J21/06—Silicon, titanium, zirconium or hafnium; Oxides or hydroxides thereof
- B01J21/063—Titanium; Oxides or hydroxides thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J27/00—Catalysts comprising the elements or compounds of halogens, sulfur, selenium, tellurium, phosphorus or nitrogen; Catalysts comprising carbon compounds
- B01J27/20—Carbon compounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J27/00—Catalysts comprising the elements or compounds of halogens, sulfur, selenium, tellurium, phosphorus or nitrogen; Catalysts comprising carbon compounds
- B01J27/24—Nitrogen compounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/06—Washing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/08—Heat treatment
- B01J37/082—Decomposition and pyrolysis
- B01J37/086—Decomposition of an organometallic compound, a metal complex or a metal salt of a carboxylic acid
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/12—Oxidising
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/12—Oxidising
- B01J37/14—Oxidising with gases containing free oxygen
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
- B01D2253/20—Organic adsorbents
- B01D2253/204—Metal organic frameworks (MOF's)
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/20—Metals or compounds thereof
- B01D2255/207—Transition metals
- B01D2255/20707—Titanium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/70—Non-metallic catalysts, additives or dopants
- B01D2255/702—Carbon
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/80—Type of catalytic reaction
- B01D2255/802—Photocatalytic
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
- B01D2257/702—Hydrocarbons
- B01D2257/7027—Aromatic hydrocarbons
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
- B01D2257/708—Volatile organic compounds V.O.C.'s
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/06—Polluted air
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2259/00—Type of treatment
- B01D2259/80—Employing electric, magnetic, electromagnetic or wave energy, or particle radiation
- B01D2259/802—Visible light
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2259/00—Type of treatment
- B01D2259/80—Employing electric, magnetic, electromagnetic or wave energy, or particle radiation
- B01D2259/804—UV light
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2531/00—Additional information regarding catalytic systems classified in B01J31/00
- B01J2531/02—Compositional aspects of complexes used, e.g. polynuclearity
- B01J2531/0213—Complexes without C-metal linkages
- B01J2531/0216—Bi- or polynuclear complexes, i.e. comprising two or more metal coordination centres, without metal-metal bonds, e.g. Cp(Lx)Zr-imidazole-Zr(Lx)Cp
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2531/00—Additional information regarding catalytic systems classified in B01J31/00
- B01J2531/40—Complexes comprising metals of Group IV (IVA or IVB) as the central metal
- B01J2531/46—Titanium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J31/00—Catalysts comprising hydrides, coordination complexes or organic compounds
- B01J31/16—Catalysts comprising hydrides, coordination complexes or organic compounds containing coordination complexes
- B01J31/1691—Coordination polymers, e.g. metal-organic frameworks [MOF]
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J31/00—Catalysts comprising hydrides, coordination complexes or organic compounds
- B01J31/16—Catalysts comprising hydrides, coordination complexes or organic compounds containing coordination complexes
- B01J31/18—Catalysts comprising hydrides, coordination complexes or organic compounds containing coordination complexes containing nitrogen, phosphorus, arsenic or antimony as complexing atoms, e.g. in pyridine ligands, or in resonance therewith, e.g. in isocyanide ligands C=N-R or as complexed central atoms
- B01J31/1805—Catalysts comprising hydrides, coordination complexes or organic compounds containing coordination complexes containing nitrogen, phosphorus, arsenic or antimony as complexing atoms, e.g. in pyridine ligands, or in resonance therewith, e.g. in isocyanide ligands C=N-R or as complexed central atoms the ligands containing nitrogen
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J31/00—Catalysts comprising hydrides, coordination complexes or organic compounds
- B01J31/16—Catalysts comprising hydrides, coordination complexes or organic compounds containing coordination complexes
- B01J31/22—Organic complexes
- B01J31/2204—Organic complexes the ligands containing oxygen or sulfur as complexing atoms
- B01J31/2208—Oxygen, e.g. acetylacetonates
- B01J31/2226—Anionic ligands, i.e. the overall ligand carries at least one formal negative charge
- B01J31/223—At least two oxygen atoms present in one at least bidentate or bridging ligand
- B01J31/2239—Bridging ligands, e.g. OAc in Cr2(OAc)4, Pt4(OAc)8 or dicarboxylate ligands
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Biomedical Technology (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- General Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Inorganic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Catalysts (AREA)
Abstract
本发明公开了一种氮掺杂介孔碳包裹的二氧化钛复合光催化剂及其制备方法和应用。该制备方法包括以下步骤:将有机配体和Ti(OC3H7)4按一定比例置于甲醇和DMF的混合液中溶解,并进行水热合成反应,经离心,干燥后,得到钛基金属有机骨架材料(Ti‑MOF);将所得的Ti‑MOF在惰性气氛中进行热解,随后经氧化刻蚀,制得氮掺杂介孔碳包裹TiO2复合光催化剂。所得复合光催化剂不仅有利于低浓度VOCs的吸附富集和传质,而且在太阳光驱动下可高效降解VOCs。在可见光催化净化VOCs中具有高的降解活性和稳定性,且催化剂合成简单、制备成本低,具有广阔的环境保护应用潜力。
Description
技术领域
本发明属于吸附型光催化材料技术领域,更具体地,涉及一种氮掺杂介孔碳包裹的二氧化钛(TiO2)复合光催化剂及其制备方法和应用。
背景技术
挥发性有机污染物(VOCs)是大气污染的一个重要来源,已对室内环境及大气环境造成不同程度的污染,严重地威胁人体健康和生态环境。如何采取高效科学技术方法消除大气中的VOCs,已成为环保科研人员研究的重点和难题。光催化氧化法是一种新型的环境污染控制技术,该技术具有应用工艺简单、一次性投资少及设备维护费用较低等优点,并且有望将VOCs最终氧化为CO2和H2O。因此在VOCs特别是低浓度VOCs的净化方面具有广阔的应用前景。迄今为止,各种半导体光催化剂已被开发应用,其中二氧化钛(TiO2)因其卓越的光催化氧化性能、抗光腐蚀、无毒价廉等优点而受到了研究者的广泛关注。然而,由于TiO2的带隙较宽(Eg=3.0~3.2eV),只有被紫外光激发时才能发生光催化反应。但是紫外光能量仅占太阳光中的不足5%,因此导致占有太阳光近43%的可见光无法有效被利用,极大地限制了其在环境净化方面的实际应用;另外,由于TiO2具有较小的比表面积,使其不能有效地吸附实际大气中低浓度的VOCs污染物,从而显著降低光催化氧化的效率。因此,拓宽TiO2材料的光响应范围,增强其吸附性能,是提高其光催化活性非常重要的方法。
为了更好地提高催化活性,国内外学者主要通过以下方面对TiO2进行了大量的改性工作:将TiO2与具有大比较面积的材料复合,提高其对VOCs的吸附富集能力;减小禁带宽度,扩大光响应范围,使其在可见光区也能展现光催化性能;加入捕获剂以阻止或减缓光生电子-空穴对的复合,提高光量子效率,改善光催化材料的稳定性等。然而,大部分的改性均很难同时提高其太阳光利用率和光催化活性,因此,如何制备出在太阳光驱动下具有稳定、高效的太阳光催化剂,能够增强催化剂对光的吸收和利用的同时,进一步提高催化剂的光催化效率和稳定性是亟待解决的问题。
截至目前,未见关于氮掺杂介孔碳包裹的TiO2复合光催化剂的制备及其在VOCs降解方面的相关研究和报道。
发明内容
本发明的目的是为了克服现有技术的缺陷,提供一种氮掺杂介孔碳包裹的TiO2复合光催化剂(介孔TiO2@NC)的制备方法。该方法以含有氨基的钛基MOF材料为牺牲模板,利用MOFs的热不稳定性,通过高温热解和氧化刻蚀相结合,制备氮掺杂介孔碳包裹的TiO2复合材料。
本发明的另一目的在于提供上述方法制备得到的氮掺杂介孔碳包裹的TiO2复合光催化剂。该材料能够在太阳光驱动下大幅度地提高其催化活性,解决了TiO2作为光催化剂对太阳光的利用率较低,以及在光催化降解实际大气中VOCs不能有效地吸附低浓度VOCs而降低光催化效率的缺陷。
本发明的再一个目的在于提供上述氮掺杂介孔碳包裹的TiO2复合光催化剂的应用。
本发明上述目的通过以下技术方案予以实现:
一种氮掺杂介孔碳包裹的二氧化钛(TiO2)复合光催化剂的制备方法,包括如下步骤:
S1.将有机配体、Ti(OC3H7)4、甲醇和DMF混合加入带聚四氟乙烯的反应釜中;
S2.将装有S1混合液的反应釜放置烘箱,升温至120~160℃,并在此温度下保持24~72h后,降温至室温,得到沉淀物;
S3.将步骤S2所得沉淀物用醇类物质和DMF洗涤后,离心分离,经真空干燥,得到活化的钛基MOFs材料;
S4.将步骤S3制得的钛基MOFs材料,在惰性气体氛围下升温至500~800℃,保温2~12h后,降温至300~500℃时,将惰性气体更换成弱氧化性气体,并保持0~120min后,调回原惰性气体氛围,再降至室温,即制得氮掺杂介孔碳包裹的TiO2复合光催化剂。
优选地,步骤S1中所述有机配体为2-氨基对苯二甲酸与对苯二甲酸的混合物或2-氨基对苯二甲酸。
优选地,步骤S1中所述的有机配体、Ti(OC3H7)4、甲醇和DMF的摩尔比为3:2:(23~25):(118~120)。
优选地,步骤S2中所述升温的速率为0.1~10℃/min。
优选地,步骤S3中所述醇类物质为甲醇或乙醇。
优选地,步骤S3中所述真空干燥的温度为100~170℃,所述真空干燥的时间为8~24h。
优选地,步骤S4中所述惰性气体为Ar或N2,所述弱氧化性气体为CO2或空气,所述升温的速率为1~10℃/min,所述降温的速率为1~10℃/min。
一种氮掺杂介孔碳包裹的TiO2复合光催化剂是由上述方法制备得到。
所述的氮掺杂介孔碳包裹的TiO2复合光催化剂在太阳光驱动下降解大气中挥发性有机物中的应用。
优选地,所述挥发性有机物为苯乙烯。
本发明中以含有氨基的钛基MOF材料为牺牲模板,利用MOFs的热不稳定性,通过高温热解和氧化刻蚀相结合的方法制备氮掺杂介孔碳包裹的TiO2复合材料。该复合光催化剂在太阳光驱动下可高效地降解低浓度VOCs,同时还提高了催化剂的稳定性。这是由于含氨基的钛基MOFs中含有的N元素在热解过程中可有效地将氮掺到TiO2中,N的掺杂可成功地将TiO2的光响应范围由紫外区扩展至可见光区;同时,在热解过程中引入一定量的弱氧化性气体,可对热解形成的碳进行部分刻蚀形成介孔,提高其孔体积和比表面积,有利于低浓度VOCs的吸附富集和传质。而且,由于外层多孔碳良好的电子传输能力,有利于光生电子的迁移,可有效提高光生电子-空穴的分离效率,进而提高光催化反应效率和光催化剂的稳定性。
与现有技术相比,本发明具有以下有益效果:
1.本发明以含有氨基的钛基MOF材料为牺牲模板,利用MOFs的热不稳定性,通过高温热解和氧化刻蚀相结合,制备氮掺杂介孔碳包裹的TiO2复合材料。该方法在将N元素掺杂进介孔碳包裹的TiO2中的同时,也提高了TiO2的比表面积,解决了TiO2作为光催化剂对太阳光的利用率较低以及在光催化降解低浓度VOCs方面的缺陷和不足,大幅度地提高其催化活性和稳定性。
2.本发明提供的氮掺杂介孔碳包裹的TiO2复合光催化材料,由于N的掺杂使TiO2的光响应范围扩大,提高了光生载流子的分离,同时弱氧化性气体对碳的刻蚀使得其孔体积和比表面积提高,使该催化剂具有稳定、高效的太阳光催化降解VOCs的优势。
3.本发明制备出的氮掺杂介孔碳包裹的TiO2复合光催化剂对典型VOCs苯乙烯,具有良好的吸附和光催化活性,其吸附时间短且降解效率高。介孔TiO2@NC对苯乙烯的吸附率在60min内达到了91.7%,对气相苯乙烯的降解率也在80min内达到74.5%,实现了吸附与光催化氧化VOCs的一体化。
附图说明
图1为实施例1中氮掺杂介孔碳包裹的TiO2(TiO2@NC)复合光催化剂对气相苯乙烯的吸附和光催化降解动力学曲线。
具体实施方式
下面结合具体实施例进一步说明本发明的内容,但不应理解为对本发明的限制。若未特别指明,实施例中所用的技术手段为本领域技术人员所熟知的常规手段。除非特别说明,本发明采用的试剂、方法和设备为本技术领域常规试剂、方法和设备。
实施例1
1.光催化材料制备
S1.将摩尔比为3:2:23:118的2-氨基对苯二甲酸、Ti(OC3H7)4、甲醇和DMF的混合后加入带聚四氟乙烯的反应釜中;
S2.将反应釜放置烘箱,设置程序,以1℃/min的速率升至150℃,然后保持48h,以5℃/h的速率降至室温,得到沉淀物;
S3.将步骤S2所得沉淀物用甲醇和DMF交叉洗涤,离心分离,150℃真空干燥12h,得到活化的钛基MOFs材料;
S4.将步骤S3制得的活化的钛基MOFs材料取适量放入管式炉中,在Ar氛围下以1℃/min的速率从室温升至600℃,并在此温度保持6h;然后以1℃/min的速率降温至500℃时将Ar更换成CO2,并保持30min;最后调回Ar氛围,并继续以1℃/min的速率降至室温,制得氮掺杂介孔碳包裹的TiO2复合光催化剂。
2.性能测试:
图1为本实施例所得氮掺杂介孔碳包裹的TiO2复合光催化剂对气相苯乙烯的吸附和光催化降解动力学曲线。由图1可以看出,对苯乙烯的吸附率在60min内达到了91.7%,对气相苯乙烯的降解率也在80min内达到74.5%。结果表明,该光催化剂具有良好的吸附和光催化活性,其中经弱氧化性气体处理的材料效果更佳,本发明制备的氮掺杂介孔碳包裹的TiO2复合光催化剂是一种具有高吸附和光催化活性的新型材料。
实施例2
S1.将摩尔比为3:2:23:118的2-氨基对苯二甲酸与对苯二甲酸的混合物、Ti(OC3H7)4、甲醇和DMF的混合后加入带聚四氟乙烯的反应釜中;
S2.将反应釜放置烘箱,设置程序,以5℃/min的速率升至150℃,然后保持72h,以5℃/h的速率降至室温,得沉淀物;
S3.将步骤S2所得沉淀物用甲醇和DMF交叉洗涤,离心分离,然后120℃真空干燥24h,得到活化的钛基MOFs材料;
S4.将步骤S3制得的催化剂取适量放入管式炉中,在Ar氛围下从室温以2℃/min的速率升温至700℃,并在此温度保持7h;然后以2℃/min的速率降室温,即可制得氮掺杂介孔碳包裹的TiO2复合光催化剂。
实施例3
S1.将摩尔比为3:2:23:118的2-氨基对苯二甲酸、Ti(OC3H7)4、甲醇和DMF混合后加入带聚四氟乙烯的反应釜中;
S2.将反应釜放置烘箱,设置程序,以1℃/min的速率升至150℃,然后保持48h,以5℃/h的速率降至室温,得沉淀物;
S3.将步骤S2所得沉淀物用甲醇和DMF交叉洗涤,离心分离,然后150℃真空干燥8h,得到活化的钛基MOFs材料;
S4.将步骤S3制得的催化剂取适量放入管式炉中,在Ar氛围下以3℃/min的升温速率从室温升至500℃,并在此温度保持9h;然后以3℃/min的速率降至300℃时将Ar更换成CO2,保持60min;最后调回Ar氛围,并继续以3℃/min的速率降至室温,即可制得氮掺杂介孔碳包裹的TiO2复合光催化剂。
实施例4
S1.将摩尔比为3:2:25:120的2-氨基对苯二甲酸、Ti(OC3H7)4、甲醇和DMF混合后加入带聚四氟乙烯的反应釜中;
S2.将反应釜放置烘箱,设置程序,以10℃/min的速率升至160℃,然后保持24h,以5℃/h的速率降至室温,得沉淀物;
S3.将步骤S2所得沉淀物乙醇和DMF交叉洗涤,离心分离,然后150℃真空干燥20h,得到活化的钛基MOFs材料;
S4.将步骤S3制得的催化剂取适量放入管式炉中,在氮气氛围下以10℃/min的速率从室温升至800℃,并在此温度保持2h;然后以5℃/min的速率降至500℃,将氮气更换成CO2,保持90min;最后调回氮气氛围,并继续以5℃/min的速率降至室温,即可制得氮掺杂介孔碳包裹的TiO2复合光催化剂。
实施例5
S1.将摩尔比为3:2:25:120的2-氨基对苯二甲酸、Ti(OC3H7)4、甲醇和DMF混合后加入带聚四氟乙烯的反应釜中。
S2.将反应釜放置烘箱,设置程序,以0.1℃/min的速率升至120℃,然后保持72h,以5℃/h的速率降至室温,得沉淀物;
S3.将步骤S2所得沉淀物甲醇和DMF交叉洗涤,离心分离,然后再170℃真空干燥16h,得到活化的钛基MOFs材料;
S4.将步骤S3制得的催化剂取适量放入管式炉中,在Ar氛围下以2℃/min的速率从室温升温至600℃,并在此温度保持12h;然后以2℃/min的速率降至500℃时将Ar更换成CO2,保持120min;最后调回Ar氛围,并以10℃/min的速率降至室温,即可制得氮掺杂介孔碳包裹的TiO2复合光催化剂。
实施例6
S1.将摩尔比为3:2:25:120的2-氨基对苯二甲酸、Ti(OC3H7)4、甲醇和DMF混合后加入带聚四氟乙烯的反应釜中。
S2.将反应釜放置烘箱,设置程序,以1℃/min的速率升至120℃,然后保持72h,以5℃/h的速率降至室温,得沉淀物;
S3.将步骤S2所得沉淀物甲醇和DMF交叉洗涤,离心分离,然后再150℃真空干燥8h,得到活化的钛基MOFs材料;
S4.将步骤S3制得的催化剂取适量放入管式炉中,在Ar氛围下以2℃/min的升温速率从室温升至600℃,并在此温度保持5h;然后以2℃/min的速率降至300℃时将Ar更换成空气,保持30min;最后调回Ar氛围,并以5℃/min的速率降至室温,即可制得氮掺杂介孔碳包裹的TiO2复合光催化剂。
上述实施例为本发明较佳的实施方式,但本发明的实施方式并不受上述实施例的限制,其他的任何未背离本发明的精神实质与原理下所作的改变、修饰、替代、组合和简化,均应为等效的置换方式,都包含在本发明的保护范围之内。
Claims (6)
1.一种用于降解苯乙烯的氮掺杂介孔碳包裹的二氧化钛复合光催化剂的制备方法,其特征在于,包括如下步骤:
S1.将有机配体、Ti(OC3H7)4、甲醇和DMF混合加入带聚四氟乙烯的反应釜中;所述有机配体为2-氨基对苯二甲酸与对苯二甲酸的混合物或2-氨基对苯二甲酸;所述的有机配体、Ti(OC3H7)4、甲醇和DMF的摩尔比为3:2:(23~25):(118~120);
S2.将装有S1混合液的反应釜放置烘箱,升温至120~160℃,并在此温度下保持24~72 h后,降温至室温,得到沉淀物;
S3.将步骤S2所得沉淀物用甲醇或乙醇、DMF洗涤后,离心分离,经真空干燥,得到活化的钛基MOFs材料;
S4.将步骤S3制得的钛基MOFs材料,在惰性气体Ar或N2氛围下以1~10℃/min升温至500~800℃,保温2~12 h后,以速率为1~10℃/min降温至300~500 ℃时,将惰性气体更换成弱氧化性气体CO2,并保持30~120 min后,调回原惰性气体氛围,再降至室温,即制得用于降解苯乙烯的氮掺杂介孔碳包裹的TiO2复合光催化剂。
2.根据权利要求1所述用于降解苯乙烯的氮掺杂介孔碳包裹的二氧化钛复合光催化剂的制备方法,其特征在于,步骤S2中所述升温的速率为0.1~10℃/min。
3.根据权利要求1所述用于降解苯乙烯的氮掺杂介孔碳包裹的二氧化钛复合光催化剂的制备方法,其特征在于,步骤S3中所述真空干燥的温度为100~170℃,所述真空干燥的时间为8~24 h。
4.一种氮掺杂介孔碳包裹的二氧化钛复合光催化剂,其特征在于,所述氮掺杂介孔碳包裹的二氧化钛复合光催化剂是由权利要求1~3任一项所述方法制备得到。
5.权利要求4所述的氮掺杂介孔碳包裹的二氧化钛复合光催化剂在太阳光驱动下降解大气中挥发性有机物中的应用。
6.根据权利要求5所述氮掺杂介孔碳包裹的二氧化钛复合光催化剂在太阳光驱动下降解大气中挥发性有机物中的应用,其特征在于,所述挥发性有机物为苯乙烯。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201710830931.8A CN107824210B (zh) | 2017-09-15 | 2017-09-15 | 一种氮掺杂介孔碳包裹的二氧化钛复合光催化剂及其制备方法和应用 |
US16/640,947 US11628432B2 (en) | 2017-09-15 | 2018-04-13 | Nitrogen-doped mesoporous carbon-coated titanium dioxide composite photocatalyst, a preparation method and use thereof |
PCT/CN2018/082910 WO2019052167A1 (zh) | 2017-09-15 | 2018-04-13 | 一种氮掺杂介孔碳包裹的二氧化钛复合光催化剂及其制备方法和应用 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201710830931.8A CN107824210B (zh) | 2017-09-15 | 2017-09-15 | 一种氮掺杂介孔碳包裹的二氧化钛复合光催化剂及其制备方法和应用 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN107824210A CN107824210A (zh) | 2018-03-23 |
CN107824210B true CN107824210B (zh) | 2021-01-19 |
Family
ID=61643859
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201710830931.8A Active CN107824210B (zh) | 2017-09-15 | 2017-09-15 | 一种氮掺杂介孔碳包裹的二氧化钛复合光催化剂及其制备方法和应用 |
Country Status (3)
Country | Link |
---|---|
US (1) | US11628432B2 (zh) |
CN (1) | CN107824210B (zh) |
WO (1) | WO2019052167A1 (zh) |
Families Citing this family (27)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3453450B1 (en) * | 2017-09-12 | 2021-06-30 | Centre National De La Recherche Scientifique | Use of metal organic frameworks for the capture of acetic acid |
CN107824210B (zh) | 2017-09-15 | 2021-01-19 | 广东工业大学 | 一种氮掺杂介孔碳包裹的二氧化钛复合光催化剂及其制备方法和应用 |
CN108704657B (zh) * | 2018-05-31 | 2020-12-11 | 广东工业大学 | 一种红磷/石墨相氮化碳复合纳米片及其制备方法和应用 |
CN108940335B (zh) * | 2018-06-14 | 2021-04-13 | 北京林业大学 | 一种基于氮掺杂具有核壳结构可磁场回收铁碳材料的高级氧化还原水处理方法 |
CN109201120A (zh) * | 2018-09-21 | 2019-01-15 | 武汉工程大学 | 可见光催化产氢的中空TiO2@ZIF-8异质结催化剂及其制备方法 |
CN109759110B (zh) * | 2019-01-03 | 2022-04-22 | 华南理工大学 | 一种氮掺杂多孔碳负载二氧化钛光催化剂及其制备方法与应用 |
CN110404561A (zh) * | 2019-08-02 | 2019-11-05 | 南京理工大学 | TiO2@C/CdS复合材料及其制备方法 |
CN110368991B (zh) * | 2019-08-05 | 2022-05-20 | 安徽元琛环保科技股份有限公司 | 基于zif-67多孔碳骨架修饰的scr低温脱硝催化剂及其制备方法 |
CN111215042A (zh) * | 2020-01-21 | 2020-06-02 | 广东工业大学 | 一种碳掺杂二氧化钛光催化剂及其制备方法与应用 |
CN111330563B (zh) * | 2020-03-25 | 2022-12-06 | 杭州楚环科技股份有限公司 | 一种有序介孔碳-氧化钛复合材料催化剂及其制备方法 |
CN111804343B (zh) * | 2020-06-01 | 2023-02-03 | 广东工业大学 | 一种金属有机骨架材料封装金/二氧化钛复合光催化材料及其制备方法和应用 |
CN111871465B (zh) * | 2020-08-18 | 2023-03-21 | 苏州荣格君新材料有限公司 | 一种双配体金属有机骨架光催化剂及其制备方法 |
CN112495440B (zh) * | 2020-11-27 | 2022-05-31 | 杭州电子科技大学 | 一种mof基复合催化剂及其制备方法 |
CN112808238B (zh) * | 2020-12-31 | 2022-04-22 | 华南理工大学 | 无机半导体-MOFs衍生物双空复合材料及其制备方法 |
CN115043426A (zh) * | 2021-03-08 | 2022-09-13 | 南京理工大学 | 氮掺杂碳包覆的二氧化钛及其制备方法 |
CN113083304B (zh) * | 2021-03-10 | 2023-08-15 | 苏州兴华高新材料科技有限公司 | 一种磁性介孔二氧化钛复合材料的制备方法及其应用 |
CN113337900B (zh) * | 2021-06-02 | 2023-05-26 | 西安交通大学 | 一种光催化织物及其制备方法和应用 |
CN113634271B (zh) * | 2021-07-16 | 2022-06-10 | 华南理工大学 | 一种用于光热催化净化VOCs的Co-MOF衍生物光热催化剂及制备方法与应用 |
CN113694949B (zh) * | 2021-07-16 | 2024-04-19 | 新线科技有限公司 | 羟基化介孔碳净化材料及其制备方法、空气净化涂料、背板 |
CN113697791A (zh) * | 2021-07-29 | 2021-11-26 | 中南大学 | 一种富缺陷碳材料及其制备方法和应用 |
CN114749167B (zh) * | 2022-03-29 | 2023-06-13 | 北京化工大学 | 一种块状结构N/S-TiO2材料及其制备方法和应用 |
CN115007183B (zh) * | 2022-05-19 | 2024-05-24 | 同济大学 | 用于电催化还原硝酸盐产氮气的单原子过渡金属/氮掺杂介孔碳材料的制备方法 |
CN114950589B (zh) * | 2022-05-27 | 2024-02-09 | 复旦大学 | 一种mct/aao异质超薄膜在光控双向可调控离子传输的应用 |
CN114890465A (zh) * | 2022-06-07 | 2022-08-12 | 上海大学 | 过渡金属掺杂的具有固定形态的二氧化钛制备方法及应用 |
CN115254166B (zh) * | 2022-08-01 | 2023-04-07 | 长江生态环保集团有限公司 | 可磁分离的氮掺杂二氧化钛光催化剂及其制备方法与应用 |
CN115888833B (zh) * | 2022-10-31 | 2024-02-27 | 淮北师范大学 | 一种CdS/Mn-MOF复合光催化剂及其制备方法、应用 |
CN116371424B (zh) * | 2023-03-24 | 2023-10-03 | 清华大学深圳国际研究生院 | 一种异质结复合光催化纳米材料及制备方法和应用 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105056896A (zh) * | 2015-09-06 | 2015-11-18 | 南京工业大学 | 一种MOFs吸附剂及应用 |
CN105854882A (zh) * | 2016-03-31 | 2016-08-17 | 华南理工大学 | 一种磁性Co3O4-C纳米材料及其制法与作为催化剂活化过一硫酸盐应用于废水处理中 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9701913B2 (en) * | 2013-12-17 | 2017-07-11 | Uop Llc | Fluid catalytic cracking process including adsorption of hydrogen and a catalyst for the process |
CN105316797A (zh) | 2014-08-05 | 2016-02-10 | 无锡华臻新能源科技有限公司 | 具有氮掺杂介孔碳修饰的二氧化钛纳米纤维的制备 |
CN104638219B (zh) * | 2015-02-11 | 2017-02-01 | 中南大学 | 一种锂硒电池用复合隔膜及其制备方法 |
CN105321719A (zh) * | 2015-11-30 | 2016-02-10 | 福州大学 | 以MOF为前驱体制备的分等级介孔TiO2及应用 |
CN107117648A (zh) * | 2017-04-21 | 2017-09-01 | 昆明理工大学 | 一种锂离子电池负极材料的制备方法 |
CN107824210B (zh) * | 2017-09-15 | 2021-01-19 | 广东工业大学 | 一种氮掺杂介孔碳包裹的二氧化钛复合光催化剂及其制备方法和应用 |
-
2017
- 2017-09-15 CN CN201710830931.8A patent/CN107824210B/zh active Active
-
2018
- 2018-04-13 US US16/640,947 patent/US11628432B2/en active Active
- 2018-04-13 WO PCT/CN2018/082910 patent/WO2019052167A1/zh active Application Filing
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105056896A (zh) * | 2015-09-06 | 2015-11-18 | 南京工业大学 | 一种MOFs吸附剂及应用 |
CN105854882A (zh) * | 2016-03-31 | 2016-08-17 | 华南理工大学 | 一种磁性Co3O4-C纳米材料及其制法与作为催化剂活化过一硫酸盐应用于废水处理中 |
Non-Patent Citations (1)
Title |
---|
"Metal-Organic Framework-Templated Synthesis of Bifunctional N-Doped TiO2-Carbon Nanotablets via Solid-State Thermolysis";Yifan Gu et al;《ACS Sustainable Chem. Eng.》;20160926;第6745页右栏,第6748页左栏第3段,图7 * |
Also Published As
Publication number | Publication date |
---|---|
US11628432B2 (en) | 2023-04-18 |
US20210121864A1 (en) | 2021-04-29 |
WO2019052167A1 (zh) | 2019-03-21 |
CN107824210A (zh) | 2018-03-23 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN107824210B (zh) | 一种氮掺杂介孔碳包裹的二氧化钛复合光催化剂及其制备方法和应用 | |
CN108568307B (zh) | 氧掺杂多孔的g-C3N4光催化剂及其制备方法与应用 | |
CN105195197A (zh) | 一种大比表面积-可见光响应TiO2催化剂及其制备方法 | |
WO2022089669A1 (zh) | 锶掺杂有序介孔锰酸镧负载贵金属钯的复合材料及其制备方法与在催化氧化甲苯中的应用 | |
CN108816244B (zh) | 一种催化氧化降解甲醛的纳米碳基复合材料及其制备方法与应用 | |
CN111468147A (zh) | 一种多孔碳复合二氧化钛-卤氧化物光催化剂及其制备方法 | |
CN112076791A (zh) | 一种在泡沫镍表面原位生长Ni-MOF薄膜光催化剂及其制备方法和应用 | |
CN106861626B (zh) | 一种吸附-光催化双功能材料及其制备方法与在挥发性有机气体治理工艺的应用 | |
CN105771948A (zh) | 具有高光催化制氢性能的双壳二氧化钛催化剂及其制备方法 | |
CN111530490A (zh) | 一种Co3O4-TiO2异质结负载碳纳米管光催化降解材料及其制法 | |
CN111185152B (zh) | 一种多功能耦合的PAC/Bi2O3/TiO2复合材料制备方法 | |
CN112473712A (zh) | 采用不同气氛处理的CeO2/g-C3N4异质结材料及其制备方法和应用 | |
CN111250170B (zh) | 一种在泡沫镍表面原位生长镍基MOFs膜光催化剂及其制备方法和应用 | |
CN115212869A (zh) | 一种基于Ce-MOF前驱体制备CeO2/TiO2复合热催化材料的制备方法 | |
CN113289652B (zh) | 一种Bi2O3/(BiO)2CO3异质结半导体光催化剂及其制备方法 | |
CN110314685B (zh) | 一种用于甲苯低温催化氧化的核壳结构催化剂制备方法 | |
CN109158117B (zh) | 一种全光谱响应双掺杂氟化镧/凹凸棒石上转换复合光催化材料及其制备方法与应用 | |
CN111450859A (zh) | 一种La掺杂(BiO)2CO3光催化剂及其制备方法 | |
CN107497427B (zh) | 一种可降解甲醛的银/石墨烯/氧化锌复合材料制备方法 | |
CN110252375B (zh) | 一种铁、氮、钴共掺杂的二氧化钛/活性炭复合物、制备方法及作为光催化剂应用 | |
CN108262049B (zh) | 一种改性低温sco脱硝催化剂及其制备方法 | |
CN115746328A (zh) | 一种同源壳核结构双金属UiO-66-NH2材料的制备方法及其应用 | |
CN111330626A (zh) | 一种半导体光催化剂材料的加工工艺 | |
CN113289661B (zh) | 一种双极化位点共修饰氮化碳光催化剂及其制备方法 | |
CN114870879A (zh) | 双金属钙钛矿负载类石墨烯型氮化碳可见光催化剂及制备方法 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
GR01 | Patent grant | ||
GR01 | Patent grant |