CN111375370A - 一种Fe-g-C3N4多功能纳米复合材料制备方法 - Google Patents
一种Fe-g-C3N4多功能纳米复合材料制备方法 Download PDFInfo
- Publication number
- CN111375370A CN111375370A CN202010057763.5A CN202010057763A CN111375370A CN 111375370 A CN111375370 A CN 111375370A CN 202010057763 A CN202010057763 A CN 202010057763A CN 111375370 A CN111375370 A CN 111375370A
- Authority
- CN
- China
- Prior art keywords
- composite material
- temperature
- fenton
- compound
- oxidation
- 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.)
- Pending
Links
- 239000002114 nanocomposite Substances 0.000 title claims abstract description 21
- 238000000034 method Methods 0.000 title claims abstract description 20
- 239000000463 material Substances 0.000 title claims abstract description 17
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 36
- 230000003647 oxidation Effects 0.000 claims abstract description 35
- 238000001354 calcination Methods 0.000 claims abstract description 21
- 239000002131 composite material Substances 0.000 claims abstract description 12
- 150000001875 compounds Chemical class 0.000 claims abstract description 12
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 9
- 238000002360 preparation method Methods 0.000 claims abstract description 8
- 230000002195 synergetic effect Effects 0.000 claims abstract description 8
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000004202 carbamide Substances 0.000 claims abstract description 7
- 229940044631 ferric chloride hexahydrate Drugs 0.000 claims abstract description 7
- NQXWGWZJXJUMQB-UHFFFAOYSA-K iron trichloride hexahydrate Chemical compound O.O.O.O.O.O.[Cl-].Cl[Fe+]Cl NQXWGWZJXJUMQB-UHFFFAOYSA-K 0.000 claims abstract description 7
- 238000001704 evaporation Methods 0.000 claims abstract description 3
- 238000003756 stirring Methods 0.000 claims abstract description 3
- 238000001179 sorption measurement Methods 0.000 claims description 8
- 238000004140 cleaning Methods 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 6
- 238000000227 grinding Methods 0.000 claims description 6
- JMANVNJQNLATNU-UHFFFAOYSA-N oxalonitrile Chemical compound N#CC#N JMANVNJQNLATNU-UHFFFAOYSA-N 0.000 claims description 6
- 230000003197 catalytic effect Effects 0.000 claims description 4
- 239000012300 argon atmosphere Substances 0.000 claims description 3
- 239000000843 powder Substances 0.000 claims description 3
- 230000008569 process Effects 0.000 claims description 3
- 235000019441 ethanol Nutrition 0.000 claims description 2
- 238000005406 washing Methods 0.000 claims 3
- 239000002957 persistent organic pollutant Substances 0.000 claims 1
- 230000000630 rising effect Effects 0.000 claims 1
- 230000001699 photocatalysis Effects 0.000 abstract description 20
- 238000006731 degradation reaction Methods 0.000 abstract description 16
- 230000015556 catabolic process Effects 0.000 abstract description 15
- 239000003344 environmental pollutant Substances 0.000 abstract description 8
- 231100000719 pollutant Toxicity 0.000 abstract description 8
- 230000006798 recombination Effects 0.000 abstract description 3
- 238000005215 recombination Methods 0.000 abstract description 3
- PYWVYCXTNDRMGF-UHFFFAOYSA-N rhodamine B Chemical compound [Cl-].C=12C=CC(=[N+](CC)CC)C=C2OC2=CC(N(CC)CC)=CC=C2C=1C1=CC=CC=C1C(O)=O PYWVYCXTNDRMGF-UHFFFAOYSA-N 0.000 description 11
- 229940043267 rhodamine b Drugs 0.000 description 11
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 9
- 239000003054 catalyst Substances 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 5
- 230000000593 degrading effect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- VTLYFUHAOXGGBS-UHFFFAOYSA-N Fe3+ Chemical compound [Fe+3] VTLYFUHAOXGGBS-UHFFFAOYSA-N 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 3
- 239000013078 crystal Substances 0.000 description 3
- 239000010842 industrial wastewater Substances 0.000 description 3
- 230000031700 light absorption Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 230000005012 migration Effects 0.000 description 2
- 238000013508 migration Methods 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 239000012071 phase Substances 0.000 description 2
- 239000002243 precursor Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229910052724 xenon Inorganic materials 0.000 description 2
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229920000877 Melamine resin Polymers 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 238000003917 TEM image Methods 0.000 description 1
- 238000002441 X-ray diffraction Methods 0.000 description 1
- 238000004833 X-ray photoelectron spectroscopy Methods 0.000 description 1
- 238000002835 absorbance Methods 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000001808 coupling effect Effects 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- QGBSISYHAICWAH-UHFFFAOYSA-N dicyandiamide Chemical compound NC(N)=NC#N QGBSISYHAICWAH-UHFFFAOYSA-N 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000004299 exfoliation Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 150000002505 iron Chemical class 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 1
- 159000000014 iron salts Chemical class 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000011941 photocatalyst Substances 0.000 description 1
- 238000001782 photodegradation Methods 0.000 description 1
- 238000000628 photoluminescence spectroscopy Methods 0.000 description 1
- 238000000103 photoluminescence spectrum Methods 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000012719 thermal polymerization Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000004627 transmission electron microscopy 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
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
-
- 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
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/0203—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising compounds of metals not provided for in B01J20/04
- B01J20/0259—Compounds of N, P, As, Sb, Bi
-
- 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
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
- B01J20/28054—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their surface properties or porosity
- B01J20/28057—Surface area, e.g. B.E.T specific surface area
- B01J20/28059—Surface area, e.g. B.E.T specific surface area being less than 100 m2/g
-
- 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
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
- B01J23/74—Iron group metals
- B01J23/745—Iron
-
- 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
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/20—Catalysts, in general, characterised by their form or physical properties characterised by their non-solid state
- B01J35/23—Catalysts, in general, characterised by their form or physical properties characterised by their non-solid state in a colloidal state
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/281—Treatment of water, waste water, or sewage by sorption using inorganic sorbents
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/722—Oxidation by peroxides
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/725—Treatment of water, waste water, or sewage by oxidation by catalytic oxidation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
- C02F2101/34—Organic compounds containing oxygen
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
- C02F2101/38—Organic compounds containing nitrogen
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/06—Controlling or monitoring parameters in water treatment pH
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/02—Specific form of oxidant
- C02F2305/026—Fenton's reagent
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/10—Photocatalysts
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Analytical Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Catalysts (AREA)
Abstract
一种Fe‑g‑C3N4多功能纳米复合材料制备方法,属于水处理领域。将尿素和六水合氯化铁溶解于无水乙醇中,搅拌蒸发后得到复合物;复合物在马弗炉中进行一次煅烧,降温研磨清洗后得到片状Fe‑g‑C3N4片状复合物;片状Fe‑g‑C3N4复合物置于管式炉中,进行二次煅烧热剥离,得到Fe‑g‑C3N4纳米复合物。本发明还公开上述制备方法制备所得复合材料及其相关应用方法。本发明制备得到的Fe‑g‑C3N4可以实现类芬顿/光催化氧化协同降解污染物,降低了光生电子‑空穴复合率,拓宽了适用的pH值范围。
Description
技术领域
本发明属于水处理领域,涉及一种Fe-g-C3N4多功能纳米复合材料制备方法,制备的Fe-g-C3N4复合材料具有吸附/类芬顿氧化/可见光催化氧化的协同功能。
背景技术
工业废水的水质复杂、污染物种类多,采用常规处理技术难以有效去除难降解污染物,一直是业界的技术难题。这些工业废水主要涉及冶金、轻工、化工、医药等多个行业。目前常采用高级氧化技术去除工业废水中的难降解污染物,主要包括臭氧、芬顿、光催化氧化等。然而,这些高级氧化技术大多有比较严格的应用条件或适用环境要求,存在影响因素多、成本增加、效能降低、有副产物等问题,例如传统芬顿技术要求pH值在3左右、会产生大量铁盐沉淀,应用受到了很大限制。近年来,制备宽pH值范围、不产生铁盐沉淀的固相催化剂受到重点关注。
类石墨氮化碳(g-C3N4)是一种具有石墨结构的非金属半导体高分子材料,具有可调的电子结构、优异的化学稳定性和低廉的制造成本而备受关注。g-C3N4可以通过尿素、双氰胺、三聚氰胺等多种前驱物的热聚合制备得到。g-C3N4的分子中含有大量由6个孤对电子的N所组成的“N点”,这些位点成为结合金属的理想位点,但块状的g-C3N4在光吸收过程中由于自身禁带宽度大、光谱响应范围小,对可见光吸收差、光催化效率低等问题。
本发明依据g-C3N4分子结构特点将Fe掺杂到g-C3N4中,采用二次煅烧热剥离制备铁掺杂类石墨相氮化碳(Fe-g-C3N4)纳米复合材料,复合材料的性能受到的前体物选取及制备工艺、制备过程、制备参数等条件影响,需要根据Fe-g-C3N4纳米复合材料的应用需求进行测试,以制备出适宜的材料以满足不同污染物浓度、吸附要求的应用环境。制得的Fe-g-C3N4具备吸附、类芬顿氧化、光催化氧化功能的协同作用。研究和开发可循环利用的Fe-g-C3N4纳米复合材料,对类芬顿光催化氧化技术的发展和水处理工艺的改进具有重要意义。
发明内容
本发明为一种Fe-g-C3N4纳米复合材料制备方法,采用两级煅烧热剥离法,将六水合氯化铁和尿素同步煅烧,形成多功能Fe-g-C3N4纳米复合材料。具备较强的吸附性,并实现了类芬顿氧化、光催化氧化协同降解体系。
发明所采用的技术方案如下:
取尿素和六水合氯化铁按一定质量比溶解于无水乙醇中,充分搅拌,水浴蒸发后得到复合物;将所得复合物在马弗炉中以一定的温度进行一次煅烧,自然冷却至室温后研磨至均分粉末状,再以一定方法清洗后得到片状Fe-g-C3N4复合物;将片状Fe-g-C3N4复合物置于管式炉中,在氩气气氛下以一定温度进行二次煅烧热剥离处理,降温研磨后得到纳米Fe-g-C3N4纳米复合物。
本发明所述尿素和六水合氯化铁所述的质量比为5-15%;所述一次煅烧温度为550℃±50℃,升温速率2-10℃/min,保持温度时间2-6h;所述一次煅烧温度为550℃±50℃,升温速率2-10℃/min,保持温度时间2-6h;所述二次煅烧热剥离的温度为500±20℃,升温速率5-15℃/min,保持温度时间1-4h;所述清洗方法为1-3次乙醇清洗、1-3次水洗。
本发明所得的Fe-g-C3N4多功能纳米复合材料可作为类芬顿光催化剂应用,用于可见光下降解难降解有机物,实现了吸附/类芬顿氧化/光催化氧化多功能协同作用,同时具有优异的循环利用性。
本发明的优点
本发明具有如下优点:
(1)Fe-g-C3N4多功能纳米复合材料由两次煅烧热剥离法制得,与普通氮化碳相比具有可见光吸收能力强、比表面积大、光生电子空穴复合率低、污染物降解效率高的特点。
(2)Fe-g-C3N4多功能纳米复合材料保持了类石墨氮化碳的特性,同时铁元素可完全掺杂进入g-C3N4骨架结构中组成Fe-N配位键,促进了Fe(Ⅲ)/Fe(Ⅱ)的迁移与循环,解决了传统芬顿氧化会产生大量铁盐污泥的问题。
(3)Fe-g-C3N4多功能纳米复合材料可形成具有吸附、类芬顿氧化、可见光光催化氧化的协同作用,具有良好的协同降解污染物功能,同时可实现复合材料的循环利用。
(4)Fe-g-C3N4多功能纳米复合材料构建的类芬顿/光催化氧化耦合作用体系在pH值3-9范围内均可以高效降解污染物,大幅度拓宽了传统芬顿氧化法适用范围。
附图说明
图1为实施例1中所得复合材料的投射电镜图。
图2为实施例1中所得复合材料的光致发光光谱图。
图3为实施例1中所得复合材料催化性能图。(a)是不同体系下降解罗丹明B效能图。(b)是类芬顿/ 光催化体系下不同复合材料降解罗丹明B效能图。(c)是pH值对2nd Fe-g-C3N4类芬顿/光催化氧化降解效果的影响图。
具体实施方式
通过以下实例对本发明作详细说明,但本发明并不限于以下实施例。
实施例1:取10g尿素和2.8g六水合氯化铁溶解于无水乙醇中,充分搅拌,水浴蒸发后得到复合物。将所得复合物在马弗炉中进行一次煅烧:升温至550℃保温4h升温速率为5℃/min,自然冷却至室温后研磨至均分粉末状。以一定方法清洗后得到片状Fe-g-C3N4复合物(记为1st Fe-g-C3N4)。将所得片状Fe-g-C3N4复合物置于管式炉中,在氩气气氛下以520℃,保温2h,升温速率10℃/min保温2h下进行二次煅烧热剥离处理,降温研磨后得到Fe-g-C3N4纳米复合物(记为2nd Fe-g-C3N4)。
按照上述相同方法不加入六水合氯化铁分别进行一次和二次煅烧,分别得到g-C3N4。(记为1st g-C3N4和2nd g-C3N4)。
将本实施例所得产物分别进行透射电镜分析、X射线衍射分析、X射线光电子能谱分析和光致发光光谱分析,结果见图1至图3。由图1可以看出,C、N、Fe元素均匀的分布在样品整个区域,有效显示Fe 的负载成功。由表1看出,经过二次煅烧热剥离后,比表面积明显大于一次煅烧。所有催化剂均在13.1°和27.4°出现衍射峰,与标准卡片(JSCPDS 87-1526)一致,分别为(100)和(002)晶面衍射峰。随着 Fe掺杂,(002)晶面强度急剧减弱,而(100)晶面也发生减弱甚至消失所有XRD谱中未发现Fe相关的第二相衍射峰,这表明Fe成功掺杂进入了g-C3N4骨架中且没有其他杂质。主峰为706.7eV,具体分为706.7、 709.3和724.0eV这3个峰,对应Fe-N、FeO和Fe2O3的键能,这表明Fe-g-C3N4中的Fe主要以Fe-N配位键形式存在。并且通过二次煅烧热剥离,Fe-N峰强增加,有利于光电荷在Fe3+与g-C3N4之间进行快速传递与迁移。由图2可以看出,Fe-g-C3N4峰强远低于g-C3N4,并且2nd Fe-g-C3N4低于1st Fe-g-C3N4。表明二次煅烧热剥离可以有效降低光生电子-空穴复合率,提升光降解效能。
表1实施例1中复合材料的比表面积对比
样品 | 比表面积(m<sup>2</sup>/g) |
1st-g-C<sub>3</sub>N<sub>4</sub> | 56.779 |
2nd g-C<sub>3</sub>N<sub>4</sub> | 78.535 |
1st-Fe-g-C<sub>3</sub>N<sub>4</sub> | 45.605 |
2nd Fe-g-C<sub>3</sub>N<sub>4</sub> | 63.521 |
实施例2:将所制备的Fe-g-C3N4纳米复合物作为催化剂,进行不同体系下测试实验,主要步骤如下: 20mg催化剂加入到100mL浓度为10mg/L的罗丹明B溶液中,先暗吸附40min以达到吸附平衡,然后打开氙灯光源为300W氙灯,用420nm滤光片滤掉紫外光。加入浓度30%的H2O2(1mmol/L)进行降解反应;每隔5min进行一次取样,经0.45μm滤膜过滤后,用紫外分光光度计在555nm波长处测定罗丹明B 的吸光度。
图3中a为加入等量2nd Fe-g-C3N4催化剂后在可见光催化氧化、类芬顿氧化及类芬顿/光催化氧化的罗丹明B降解效果。可以看到,在45min反应时间范围内,光催化氧化、类芬顿氧化、类芬顿/光催化氧化的罗丹明B降解率分别为39%、76%、96.1%。类芬顿/光催化氧化的罗丹明B降解速率显著更高,比光催化氧化、芬顿氧化的分别高2.5倍和1.3倍,这表明类芬顿/光催化氧化具有显著的协同作用,大幅度提高了罗丹明B的降解效率。图3中b为类芬顿/光催化氧化体系下1st g-C3N4、2nd g-C3N4、1st Fe-g-C3N4和2nd Fe-g-C3N4降解效能对比。可以看出,通过二次煅烧热剥离所得2nd Fe-g-C3N4降解效果最佳,45分钟内降解率为96.1%。图3中c为2nd Fe-g-C3N4在pH值3-9范围内Fe-g-C3N4类芬顿/光催化氧化降解效果。当pH值分别为3、5、7、9时,罗丹明B的降解率分别为94.98%、94.79%、91.89%和90.02%。可见,在酸性条件下的罗丹明B的降解效能更好,但碱性条件下的降解率仍能达到90%以上,改善了传统芬顿氧化反应的缺点。
Claims (7)
1.一种铁掺杂类石墨相氮化碳(Fe-g-C3N4)多功能纳米复合材料制备方法,制备的Fe-g-C3N4复合材料具有吸附/类芬顿氧化/可见光催化氧化的协同功能,其特征在于,包括以下步骤:
(1)取尿素和六水合氯化铁按一定质量比溶解于无水乙醇中,充分搅拌,水浴蒸发后得到复合物;
(2)将所得复合物在马弗炉中以一定的温度进行一次煅烧,自然冷却至室温后研磨至均分粉末状,再以一定方法清洗后得到片状Fe-g-C3N4复合物;
(3)将片状Fe-g-C3N4复合物置于管式炉中,在氩气气氛下以一定温度进行二次煅烧热剥离处理,降温研磨后得到纳米Fe-g-C3N4纳米复合物。
2.根据权利要求1所述的方法,其特征在于,步骤(1)所述的质量比为5-15%。
3.根据权利要求1所述的方法,其特征在于,步骤(2)所述一次煅烧温度为550℃±50℃,升温速率2-10℃/min,保持温度时间2-6h。
4.根据权利要求1所述的方法,其特征在于,步骤(3)所述二次煅烧热剥离的温度为500±20℃,升温速率5-15℃/min,保持温度时间1-4h。
5.根据权利要求1所述的方法,其特征在于,所述清洗方法为1-3次乙醇清洗、1-3次水洗。
6.按照权利要求1-4任一项所述的方法制备得到的Fe-g-C3N4复合材料。
7.按照权利要求1-4任一项所述的方法制备得到的Fe-g-C3N4复合材料的应用,用于吸附/类芬顿氧化/可见光催化氧化协同降解有机污染物。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202010057763.5A CN111375370A (zh) | 2020-01-19 | 2020-01-19 | 一种Fe-g-C3N4多功能纳米复合材料制备方法 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202010057763.5A CN111375370A (zh) | 2020-01-19 | 2020-01-19 | 一种Fe-g-C3N4多功能纳米复合材料制备方法 |
Publications (1)
Publication Number | Publication Date |
---|---|
CN111375370A true CN111375370A (zh) | 2020-07-07 |
Family
ID=71220620
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN202010057763.5A Pending CN111375370A (zh) | 2020-01-19 | 2020-01-19 | 一种Fe-g-C3N4多功能纳米复合材料制备方法 |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN111375370A (zh) |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112756008A (zh) * | 2021-01-13 | 2021-05-07 | 合肥工业大学 | 一种铁掺杂氮化碳硅藻土复合材料及其制备方法、应用 |
CN113070091A (zh) * | 2021-04-12 | 2021-07-06 | 重庆科技学院 | 氮化碳铁铜双金属氧化物复合材料及其制备方法和应用 |
CN113398974A (zh) * | 2021-06-22 | 2021-09-17 | 江苏科技大学 | 一种Fe掺杂g-C3N4光催化剂及其制备方法和应用 |
CN113751046A (zh) * | 2021-10-09 | 2021-12-07 | 东华大学 | 一种铁掺杂树脂修饰石墨相氮化碳光芬顿催化剂及制备方法 |
CN113856725A (zh) * | 2021-10-18 | 2021-12-31 | 常州大学 | g-C3N4/Fe/MoS2三元花状异质结材料及其制备方法和应用 |
CN113926483A (zh) * | 2021-11-22 | 2022-01-14 | 西南林业大学 | 一种磁回收型双芬顿Fe3O4-Fe-CN复合材料的制备方法及应用 |
CN115055198A (zh) * | 2022-04-11 | 2022-09-16 | 江苏省农业科学院 | 一种促进秸秆降解的Fe-C3N4复合材料的制备方法与应用 |
CN115646527A (zh) * | 2022-10-21 | 2023-01-31 | 四川农业大学 | 铁原位掺杂氮化碳非均相芬顿催化剂的制备方法与应用 |
CN115739086A (zh) * | 2022-11-07 | 2023-03-07 | 北京林业大学 | 一种Fe@g-C3N4异质结光催化抑藻材料制备及其应用 |
CN116273113A (zh) * | 2023-01-18 | 2023-06-23 | 常州大学 | 单分散金属M负载石墨相氮化碳材料M/g-C3N4H的制备方法及其应用 |
Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104437643A (zh) * | 2014-11-04 | 2015-03-25 | 内蒙古民族大学 | 集成芬顿效应和光催化的固态超分子光催化剂及其制备方法和应用 |
CN104888837A (zh) * | 2015-06-10 | 2015-09-09 | 浙江理工大学 | 一种具有可见光响应的氮化碳/三氧化二铁纳米复合材料的合成方法及应用 |
CN106345505A (zh) * | 2016-07-29 | 2017-01-25 | 中国石油大学(华东) | 一种多孔异质结构的复合光催化剂及其制备方法 |
CN106629638A (zh) * | 2016-10-10 | 2017-05-10 | 合肥工业大学 | 一种单分散结构g‑C3N4纳米片及其制备方法 |
CN108380235A (zh) * | 2018-04-17 | 2018-08-10 | 同济大学 | 一种石墨相氮化碳基非均相类芬顿催化剂的制备方法及其应用 |
CN108772090A (zh) * | 2018-05-30 | 2018-11-09 | 上海交通大学 | 铁基量子点修饰的g-C3N4可见光驱动类芬顿催化剂 |
CN108816268A (zh) * | 2018-07-04 | 2018-11-16 | 西南科技大学 | 复合光催化纳米材料及其制备方法、以及降解污染物方法 |
CN109896579A (zh) * | 2018-08-24 | 2019-06-18 | 成都理工大学 | 一种Fe掺杂的g-C3N4纳米复合材料光催化降解水体中磺胺嘧啶的方法 |
CN110479343A (zh) * | 2019-08-16 | 2019-11-22 | 北京师范大学 | 一种Fe2O3/g-C3N4复合光催化材料的一步合成制备方法 |
CN110548532A (zh) * | 2019-09-10 | 2019-12-10 | 重庆工商大学 | 一种可重复利用的高效氮化碳基复合光催化剂的制备方法 |
CN110694663A (zh) * | 2019-10-22 | 2020-01-17 | 邢台学院 | 一种复合光催化剂的制备方法及应用 |
-
2020
- 2020-01-19 CN CN202010057763.5A patent/CN111375370A/zh active Pending
Patent Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104437643A (zh) * | 2014-11-04 | 2015-03-25 | 内蒙古民族大学 | 集成芬顿效应和光催化的固态超分子光催化剂及其制备方法和应用 |
CN104888837A (zh) * | 2015-06-10 | 2015-09-09 | 浙江理工大学 | 一种具有可见光响应的氮化碳/三氧化二铁纳米复合材料的合成方法及应用 |
CN106345505A (zh) * | 2016-07-29 | 2017-01-25 | 中国石油大学(华东) | 一种多孔异质结构的复合光催化剂及其制备方法 |
CN106629638A (zh) * | 2016-10-10 | 2017-05-10 | 合肥工业大学 | 一种单分散结构g‑C3N4纳米片及其制备方法 |
CN108380235A (zh) * | 2018-04-17 | 2018-08-10 | 同济大学 | 一种石墨相氮化碳基非均相类芬顿催化剂的制备方法及其应用 |
CN108772090A (zh) * | 2018-05-30 | 2018-11-09 | 上海交通大学 | 铁基量子点修饰的g-C3N4可见光驱动类芬顿催化剂 |
CN108816268A (zh) * | 2018-07-04 | 2018-11-16 | 西南科技大学 | 复合光催化纳米材料及其制备方法、以及降解污染物方法 |
CN109896579A (zh) * | 2018-08-24 | 2019-06-18 | 成都理工大学 | 一种Fe掺杂的g-C3N4纳米复合材料光催化降解水体中磺胺嘧啶的方法 |
CN110479343A (zh) * | 2019-08-16 | 2019-11-22 | 北京师范大学 | 一种Fe2O3/g-C3N4复合光催化材料的一步合成制备方法 |
CN110548532A (zh) * | 2019-09-10 | 2019-12-10 | 重庆工商大学 | 一种可重复利用的高效氮化碳基复合光催化剂的制备方法 |
CN110694663A (zh) * | 2019-10-22 | 2020-01-17 | 邢台学院 | 一种复合光催化剂的制备方法及应用 |
Non-Patent Citations (5)
Title |
---|
JINSHAN HU等: "In-situ Fe-doped g-C3N4 heterogeneous catalyst via photocatalysis-Fenton reaction with enriched photocatalytic performance for removal of complex wastewater", 《APPLIED CATALYSIS B: ENVIRONMENTAL》 * |
SHAFAQ SAHAR等: "Fe_3O_4/g-C_3N_4复合催化剂增强芬顿/光-芬顿和类过氧化酶反应的活性及稳定性(英文)", 《催化学报》 * |
庞丹丹等: "g-C_3N_4光催化剂的改性优化研究进展", 《环境工程》 * |
许杞祥: "石墨相氮化碳的改性及其光催化性能研究", 《万方学位论文数据库》 * |
高樱等: "改性光催化剂的制备与表征及其在光芬顿中的应用", 《西安工业大学学报》 * |
Cited By (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112756008A (zh) * | 2021-01-13 | 2021-05-07 | 合肥工业大学 | 一种铁掺杂氮化碳硅藻土复合材料及其制备方法、应用 |
CN113070091A (zh) * | 2021-04-12 | 2021-07-06 | 重庆科技学院 | 氮化碳铁铜双金属氧化物复合材料及其制备方法和应用 |
CN113398974A (zh) * | 2021-06-22 | 2021-09-17 | 江苏科技大学 | 一种Fe掺杂g-C3N4光催化剂及其制备方法和应用 |
CN113751046A (zh) * | 2021-10-09 | 2021-12-07 | 东华大学 | 一种铁掺杂树脂修饰石墨相氮化碳光芬顿催化剂及制备方法 |
CN113856725A (zh) * | 2021-10-18 | 2021-12-31 | 常州大学 | g-C3N4/Fe/MoS2三元花状异质结材料及其制备方法和应用 |
CN113926483B (zh) * | 2021-11-22 | 2022-09-16 | 西南林业大学 | 一种磁回收型双芬顿Fe3O4-Fe-CN复合材料的制备方法及应用 |
CN113926483A (zh) * | 2021-11-22 | 2022-01-14 | 西南林业大学 | 一种磁回收型双芬顿Fe3O4-Fe-CN复合材料的制备方法及应用 |
CN115055198A (zh) * | 2022-04-11 | 2022-09-16 | 江苏省农业科学院 | 一种促进秸秆降解的Fe-C3N4复合材料的制备方法与应用 |
CN115055198B (zh) * | 2022-04-11 | 2024-05-14 | 江苏省农业科学院 | 一种促进秸秆降解的Fe-C3N4复合材料的制备方法与应用 |
CN115646527A (zh) * | 2022-10-21 | 2023-01-31 | 四川农业大学 | 铁原位掺杂氮化碳非均相芬顿催化剂的制备方法与应用 |
CN115646527B (zh) * | 2022-10-21 | 2024-04-16 | 四川农业大学 | 铁原位掺杂氮化碳非均相芬顿催化剂的制备方法与应用 |
CN115739086A (zh) * | 2022-11-07 | 2023-03-07 | 北京林业大学 | 一种Fe@g-C3N4异质结光催化抑藻材料制备及其应用 |
CN116273113A (zh) * | 2023-01-18 | 2023-06-23 | 常州大学 | 单分散金属M负载石墨相氮化碳材料M/g-C3N4H的制备方法及其应用 |
CN116273113B (zh) * | 2023-01-18 | 2024-08-23 | 常州大学 | 单分散金属M负载石墨相氮化碳材料M/g-C3N4H的制备方法及其应用 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN111375370A (zh) | 一种Fe-g-C3N4多功能纳米复合材料制备方法 | |
CN111453804B (zh) | 一种铁掺杂类石墨相氮化碳/石墨烯多功能纳米复合材料的制备方法 | |
Liang et al. | Sulfur-doped graphitic carbon nitride decorated with zinc phthalocyanines towards highly stable and efficient photocatalysis | |
KR101359443B1 (ko) | 광촉매 재료 및 그 제조방법 | |
Fang et al. | Ternary heterojunction stabilized photocatalyst of Co-TiO2/g-C3N4 in boosting sulfite oxidation during wet desulfurization | |
Mardiroosi et al. | Design and fabrication of a perylene dimiide functionalized g-C3N4@ UiO-66 supramolecular photocatalyst: Insight into enhancing the photocatalytic performance | |
CN114029090A (zh) | 一种去除污水重金属的光催化剂的制备方法 | |
Hamou et al. | Novel chemically reduced cobalt-doped gC 3 N 4 (CoCN-x) as a highly heterogeneous catalyst for the super-degradation of organic dyes via peroxymonosulfate activation | |
Ravi et al. | Synthesis of Y 2 Ti 2 O 7-x N y with visible light responsive photocatalytic activity | |
CN111545211B (zh) | 一种氧化石墨烯-氧化镧-氢氧化钴复合材料、合成方法及其应用 | |
CN112403467A (zh) | TiO2掺杂Co复合光催化剂及其制备方法和在处理含酚废水中的应用 | |
A'srai et al. | CuO/TiO 2 nanocomposite photocatalyst for efficient MO degradation. | |
CN115430451B (zh) | 铁钛共掺杂的多孔石墨相氮化碳光芬顿催化剂及其制备方法和应用 | |
CN108404948B (zh) | 一种(BiO)2CO3-BiO2-x复合光催化剂及其制备方法和应用 | |
CN114950524A (zh) | 一种多孔氮化碳-三氧化钨复合材料及其制备方法和应用 | |
CN113751071A (zh) | 夹层片状Bi2O3/UiO-66-NH2复合材料及其的制备方法和应用 | |
CN109046437B (zh) | 一种可全天使用的光催化剂及其制备方法与应用 | |
CN113244929A (zh) | 铁铋氧化物Bi2Fe4O9的制备方法及在有机废水处理中的应用 | |
CN111992201A (zh) | 微波水热法一步合成BiVO4/InVO4光催化剂的方法和应用 | |
CN117619374B (zh) | 金属掺杂SrTiO3/TiO2光催化材料及其制备方法与应用 | |
Li et al. | Fabrication of two 2D Cu-based coordination polymers via a secondary ligand adjustment and a derived Cu/Cu 2 O heterojunction for an enhanced dye removal capacity | |
CN115722235B (zh) | 一种Mn3O4@Bi5O7I-BiOI光催化剂及其制备方法与应用 | |
CN112452320B (zh) | 一种自然光降解污染物催化剂及其制备方法 | |
CN114602482B (zh) | 一种铋层结构压电异质结催化剂及其制备方法 | |
CN115193477B (zh) | 一种光催化剂及其制备方法和应用 |
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 | ||
RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200707 |
|
RJ01 | Rejection of invention patent application after publication |