CN116903021A - 一种多孔氧化铈纳米片催化剂及其制备和在光热协同二氧化碳分解反应中的应用 - Google Patents
一种多孔氧化铈纳米片催化剂及其制备和在光热协同二氧化碳分解反应中的应用 Download PDFInfo
- Publication number
- CN116903021A CN116903021A CN202310898675.1A CN202310898675A CN116903021A CN 116903021 A CN116903021 A CN 116903021A CN 202310898675 A CN202310898675 A CN 202310898675A CN 116903021 A CN116903021 A CN 116903021A
- Authority
- CN
- China
- Prior art keywords
- cerium oxide
- porous cerium
- oxide nano
- catalyst
- sheet
- 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
- 239000003054 catalyst Substances 0.000 title claims abstract description 28
- 229910000420 cerium oxide Inorganic materials 0.000 title claims abstract description 25
- BMMGVYCKOGBVEV-UHFFFAOYSA-N oxo(oxoceriooxy)cerium Chemical compound [Ce]=O.O=[Ce]=O BMMGVYCKOGBVEV-UHFFFAOYSA-N 0.000 title claims abstract description 25
- 239000002135 nanosheet Substances 0.000 title claims abstract description 17
- 238000002360 preparation method Methods 0.000 title claims abstract description 12
- 238000000354 decomposition reaction Methods 0.000 title claims abstract description 6
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 title description 14
- 229910002092 carbon dioxide Inorganic materials 0.000 title description 7
- 239000001569 carbon dioxide Substances 0.000 title description 7
- 230000002195 synergetic effect Effects 0.000 title description 3
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 claims abstract description 11
- 239000008103 glucose Substances 0.000 claims abstract description 11
- WQZGKKKJIJFFOK-VFUOTHLCSA-N beta-D-glucose Chemical compound OC[C@H]1O[C@@H](O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-VFUOTHLCSA-N 0.000 claims abstract description 9
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 4
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 4
- 229910002651 NO3 Inorganic materials 0.000 claims abstract description 3
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 claims abstract description 3
- 238000006479 redox reaction Methods 0.000 claims abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- PAWQVTBBRAZDMG-UHFFFAOYSA-N 2-(3-bromo-2-fluorophenyl)acetic acid Chemical compound OC(=O)CC1=CC=CC(Br)=C1F PAWQVTBBRAZDMG-UHFFFAOYSA-N 0.000 claims description 7
- 239000002064 nanoplatelet Substances 0.000 claims description 7
- QQZMWMKOWKGPQY-UHFFFAOYSA-N cerium(3+);trinitrate;hexahydrate Chemical compound O.O.O.O.O.O.[Ce+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O QQZMWMKOWKGPQY-UHFFFAOYSA-N 0.000 claims description 6
- 238000001035 drying Methods 0.000 claims description 6
- 238000001354 calcination Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 5
- 239000000843 powder Substances 0.000 claims description 4
- 238000002604 ultrasonography Methods 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims 2
- 230000000694 effects Effects 0.000 abstract description 5
- 230000004298 light response Effects 0.000 abstract description 3
- 239000004215 Carbon black (E152) Substances 0.000 abstract description 2
- 229930195733 hydrocarbon Natural products 0.000 abstract description 2
- 230000000593 degrading effect Effects 0.000 abstract 1
- 230000002349 favourable effect Effects 0.000 abstract 1
- 150000002430 hydrocarbons Chemical class 0.000 abstract 1
- 239000002994 raw material Substances 0.000 abstract 1
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 12
- 239000000463 material Substances 0.000 description 11
- 238000006243 chemical reaction Methods 0.000 description 9
- 230000000052 comparative effect Effects 0.000 description 7
- 238000000227 grinding Methods 0.000 description 6
- 239000000243 solution Substances 0.000 description 6
- 239000002244 precipitate Substances 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- 239000004065 semiconductor Substances 0.000 description 4
- 238000003756 stirring Methods 0.000 description 4
- 239000000725 suspension Substances 0.000 description 4
- 238000000137 annealing Methods 0.000 description 3
- 239000008367 deionised water Substances 0.000 description 3
- 229910021641 deionized water Inorganic materials 0.000 description 3
- 230000001699 photocatalysis Effects 0.000 description 3
- 238000001228 spectrum Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 238000003917 TEM image Methods 0.000 description 2
- 230000003197 catalytic effect Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 239000000839 emulsion Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000001027 hydrothermal synthesis Methods 0.000 description 2
- 238000010335 hydrothermal treatment Methods 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 238000007146 photocatalysis Methods 0.000 description 2
- 239000011941 photocatalyst Substances 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 238000007873 sieving Methods 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 229910052684 Cerium Inorganic materials 0.000 description 1
- AFCARXCZXQIEQB-UHFFFAOYSA-N N-[3-oxo-3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(CCNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 AFCARXCZXQIEQB-UHFFFAOYSA-N 0.000 description 1
- 241001464837 Viridiplantae Species 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical group [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 239000011203 carbon fibre reinforced carbon Substances 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical compound [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000004817 gas chromatography Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 230000033116 oxidation-reduction process Effects 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 125000004430 oxygen atom Chemical group O* 0.000 description 1
- 238000013032 photocatalytic reaction Methods 0.000 description 1
- 230000001443 photoexcitation Effects 0.000 description 1
- 230000029553 photosynthesis Effects 0.000 description 1
- 238000010672 photosynthesis Methods 0.000 description 1
- 229910001404 rare earth metal oxide Inorganic materials 0.000 description 1
- 239000012495 reaction gas Substances 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000006722 reduction reaction Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
- 238000009210 therapy by ultrasound Methods 0.000 description 1
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
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/10—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of rare earths
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y30/00—Nanotechnology for materials or surface science, e.g. nanocomposites
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y40/00—Manufacture or treatment of nanostructures
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/40—Carbon monoxide
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F17/00—Compounds of rare earth metals
- C01F17/10—Preparation or treatment, e.g. separation or purification
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F17/00—Compounds of rare earth metals
- C01F17/20—Compounds containing only rare earth metals as the metal element
- C01F17/206—Compounds containing only rare earth metals as the metal element oxide or hydroxide being the only anion
- C01F17/224—Oxides or hydroxides of lanthanides
- C01F17/235—Cerium oxides or hydroxides
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2002/00—Crystal-structural characteristics
- C01P2002/70—Crystal-structural characteristics defined by measured X-ray, neutron or electron diffraction data
- C01P2002/72—Crystal-structural characteristics defined by measured X-ray, neutron or electron diffraction data by d-values or two theta-values, e.g. as X-ray diagram
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2002/00—Crystal-structural characteristics
- C01P2002/80—Crystal-structural characteristics defined by measured data other than those specified in group C01P2002/70
- C01P2002/84—Crystal-structural characteristics defined by measured data other than those specified in group C01P2002/70 by UV- or VIS- data
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/01—Particle morphology depicted by an image
- C01P2004/04—Particle morphology depicted by an image obtained by TEM, STEM, STM or AFM
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/60—Particles characterised by their size
- C01P2004/64—Nanometer sized, i.e. from 1-100 nanometer
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/12—Surface area
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/16—Pore diameter
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Nanotechnology (AREA)
- Inorganic Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Crystallography & Structural Chemistry (AREA)
- Materials Engineering (AREA)
- Analytical Chemistry (AREA)
- Composite Materials (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Manufacturing & Machinery (AREA)
- Catalysts (AREA)
Abstract
本发明公开了一种具有光响应的多孔氧化铈纳米片催化剂及制备方法和在光热协同CO2分解反应中的应用。本发明所得的CeO2催化剂是利用葡萄糖和硝酸盐之间的剧烈氧化还原反应构建牺牲性碳模板而制得。该催化剂在低温紫外可见光条件下能有效的催化CO2分解成为碳氢产物原材料的CO,并具有高稳定性和活性,有利于降解大气中的CO2,具有良好的应用前景。
Description
技术领域
本发明属于环境保护及可再生能源领域,具体涉及一种具有光响应的多孔氧化铈纳米片催化剂及其制备方法与应用,该催化剂可以显著提高紫外-可见光下CO2的分解效率。
背景技术
CO2的合理利用对解决环境问题和能源危机具有极其重要的意义。
众所周知,二氧化碳是非极性分子,分子形状是直线型的,两个氧原子分别与碳原子以C=O键的形式连接,碳氧键断裂所需要的能量为750 KJ/mol,远高于碳氢键411 KJ/mol、碳碳键336 KJ/mol和碳氧键327 KJ/mol的键能。因此,从热力学角度来说,二氧化碳具有较高的热力学稳定性,实现二氧化碳还原需要跨越很高的热力学势垒,通常需要依靠外部注入能量打破C=O键,这使通过可再生能源来转化CO2具有重要的意义。
自然界中,绿色植物的光合作用是在太阳光照下利用水和二氧化碳合成有机物的反应。同时,太阳能无处不在,便于取用,因此,科学家们致力于利用太阳能将CO2转化为能够被人类所使用的高附加值的化学产品,这是非常具有前景和应用价值的发展方向。而光催化剂作为调控光催化反应的重要成分受到研究者的广泛关注。半导体由于具有制备简单、成本低、禁带可调等优点,在传统光催化中得到了广泛的应用,半导体光催化技术是基于半导体受光激发将太阳能转化为化学能的一个新兴技术。近年来,在众多半导体催化剂中,CeO2是一种良好的稀土金属氧化物材料,具有优异的氧化还原特性,并且富含较多的氧空位,是最有前途的光催化剂之一。
发明内容
本发明的目的在于提供一种具有光响应的多孔氧化铈纳米片催化剂及其制备方法和应用,该催化剂在光热协同分解CO2的反应中具有较高的活性和稳定性,且该催化剂制备方法简单易行,有良好的应用前景。
为实现上述目的,本发明采用下如下技术方案:
一种多孔氧化铈纳米片,其是利用葡萄糖和硝酸盐之间的剧烈氧化还原反应,通过将葡萄糖和硝酸铵加热至高温时反应产生的气体吹动熔融的葡萄糖形成具有分层结构的牺牲性碳模板,并使Ce分散在碳模板上,从而形成多孔氧化铈纳米片,其比表面积约为47m2g-1,孔径约为5 nm。
所述多孔氧化铈纳米片的制备方法具体是将葡萄糖、硝酸铵、六水合硝酸铈溶解于水中,超声使其完全溶解后,转移至80℃烘箱中烘干,再放入马弗炉中经煅烧后退火至室温,所得粉末经研磨,得到所述多孔氧化铈纳米片。
进一步地,所用葡萄糖、硝酸铵、六水合硝酸铈的质量比为4:5:1。
进一步地,所述煅烧是于空气气氛中、500 ℃条件下焙烧2h。
所述多孔氧化铈纳米片可作为催化剂,在低温(100-250℃)、光照条件下,利用光热协同作用催化CO2分解产生CO,对解决环境和能源问题有重要意义。
本发明的显著优点在于:
本发明针对光热化学循环太阳能利用效率低、产物生成速率较慢等问题,提出一种氧化铈催化剂,其可光热分解CO2,很好的降低了热化学循环反应温度,增加了反应的活性和稳定性,更有利于工业上应用。
附图说明
图1为实施例1及对比例1、2所得CeO2催化剂的XRD比较图。
图2为实施例1所得多孔CeO2纳米片的TEM图。
图3为实施例1及对比例1、2所得CeO2催化剂的紫外可见漫反射比较图。
图4为实施例1及对比例1、2所得CeO2催化剂的活性数据比较图。
具体实施方式
一种多孔氧化铈纳米片,其是按质量比4:5:1将葡萄糖、硝酸铵、六水合硝酸铈溶解于水中,超声使其完全溶解后,转移至80℃烘箱中烘干,再放入马弗炉中,于空气气氛中、500 ℃条件下焙烧2h后退火至室温,所得粉末经研磨即得。
为了使本发明所述的内容更加便于理解,下面结合具体实施方式对本发明所述的技术方案做进一步的说明,但是本发明不仅限于此。
实施例1多孔氧化铈纳米片催化剂的制备:
将0.4 g葡萄糖、0.5 g硝酸铵、0.1 g六水合硝酸铈溶解于10 ml去离子水中,超声使其完全溶解后,转移至80℃烘箱中烘干,随后放入马弗炉中,在空气气氛中、于500 ℃煅烧2 h后退火至室温,再将所得粉末置于研钵中研磨,得到多孔氧化铈纳米片,记为2D-CeO2。
对比例1立方形貌CeO2催化剂的制备
配制30ml 14mol/L的NaOH溶液和40ml 0.113mol/L的Ce(NO3)3溶液,在搅拌条件下,将NaOH溶液逐滴滴入Ce(NO3)3溶液中,继续搅拌30min,得到乳状悬浮液。之后将所得乳状悬浮液转移到水热反应釜中,经过180℃恒温水热24小时后降至室温,离心,用去离子水和无水乙醇洗涤沉淀,以去除其他多余离子,再将沉淀置于60℃烘箱中烘干,研磨后于500℃空气中焙烧4h,再次研磨过筛,即得立方形貌CeO2,记为C-CeO2。
对比例2八面体形貌CeO2催化剂的制备
配制30ml 0.275mol/L的NaOH溶液和40ml 0.113mol/L的Ce(NO3)3溶液,在搅拌条件下,将NaOH溶液逐滴滴入Ce(NO3)3溶液中,继续搅拌30min,得到乳状悬浮液。之后将所得乳状悬浮液转移到水热反应釜中,经过180℃恒温水热24小时后降至室温,离心,用去离子水和无水乙醇洗涤沉淀,以去除其他多余离子,再将沉淀置于60℃烘箱中烘干,研磨后于500℃空气中焙烧4h,再次研磨过筛,即得八面体形貌CeO2,记为O-CeO2。
图1为实施例1及对比例1、2所得氧化铈催化剂的XRD谱图。从图中可以看出,不同类型CeO2均表现为立方萤石结构(JCPDS:34-0394),并且在谱图中没有观察到到其他峰,说明制备的样品没有杂质,结晶度良好。
图2为实施例1所得多孔氧化铈纳米片的TEM图。从图中可以看出,所制备出的催化剂为多孔片状。经测定,其比表面积约为47 m2g-1,孔径约为5 nm。
图3为实施例1及对比例1、2所得氧化铈催化剂的DRS图。从图中可以看出,不同类型的CeO2的谱图相似,均在紫外可见光区域有吸收峰,表明紫外可见光可激发CeO2载体产生光生载流子。
实施例2催化剂的性能评价
采用间歇式反应器进行CO2分解反应。将20 mg的催化剂分散在3 ml的水中,倒入反应器中,并在80℃下进行干燥。随后抽至真空并填入高纯二氧化碳(99.999%),放在加热板上,将热电偶插入反应器的底部,以检测催化剂的底部温度。将加热板的温度提高到规定的温度(100~200 ℃),之后,打开灯源(300W装有红外滤光片的Xe灯),进行光热反应。在规定的反应时间间隔用色谱针从反应器中提取1 mL反应气体,采用气相色谱法(Agilent7890)配以高灵敏度热导检测器(TCD)检测光催化产物CO的含量,结果见图4。
如图4所示,反应后的产物只有CO,并未发现有其它副产物产生,证明三种形貌催化剂选择性良好。同时也可以观察到,三种材料的催化活性存在明显差异,2D-CeO2随着温度的升高活性增长的最显著,催化性能最佳,O-CeO2次之,C-CeO2最低。
以上所述仅为本发明的较佳实施例,凡依本发明申请专利范围所做的均等变化与修饰,皆应属本发明的涵盖范围。
Claims (7)
1.一种多孔氧化铈纳米片的制备方法,其特征在于,利用葡萄糖和硝酸盐之间的剧烈氧化还原反应构建牺牲性碳模板,从而合成所述多孔氧化铈纳米片。
2.根据权利要求1所述的多孔氧化铈纳米片的制备方法,其特征在于,其具体是将葡萄糖、硝酸铵、六水合硝酸铈溶解于水中,超声使其完全溶解后,转移至80℃烘箱中烘干,再放入马弗炉中经煅烧后退火至室温,所得粉末经研磨,得到所述多孔氧化铈纳米片。
3.根据权利要求2所述的多孔氧化铈纳米片的制备方法,其特征在于,所用葡萄糖、硝酸铵、六水合硝酸铈的质量比为4:5:1。
4. 根据权利要求2所述的多孔氧化铈纳米片的制备方法,其特征在于,所述煅烧是于空气气氛中、500 ℃条件下焙烧2h。
5.一种如权利要求1-4任一方法制备的多孔氧化铈纳米片。
6.一种如权利要求5所述的多孔氧化铈纳米片的应用,其特征在于,利用所述多孔氧化铈纳米片作为催化剂,在低温光照条件下,利用光热协同作用催化CO2分解产生CO。
7.根据权利要求6所述的应用,其特征在于,所述低温在100-250℃之间。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202310898675.1A CN116903021A (zh) | 2023-07-21 | 2023-07-21 | 一种多孔氧化铈纳米片催化剂及其制备和在光热协同二氧化碳分解反应中的应用 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202310898675.1A CN116903021A (zh) | 2023-07-21 | 2023-07-21 | 一种多孔氧化铈纳米片催化剂及其制备和在光热协同二氧化碳分解反应中的应用 |
Publications (1)
Publication Number | Publication Date |
---|---|
CN116903021A true CN116903021A (zh) | 2023-10-20 |
Family
ID=88356205
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN202310898675.1A Pending CN116903021A (zh) | 2023-07-21 | 2023-07-21 | 一种多孔氧化铈纳米片催化剂及其制备和在光热协同二氧化碳分解反应中的应用 |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN116903021A (zh) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN117654477A (zh) * | 2023-11-28 | 2024-03-08 | 中国矿业大学 | 一种C@CeO2催化剂及其制备方法和在催化二氧化碳解吸中的应用 |
-
2023
- 2023-07-21 CN CN202310898675.1A patent/CN116903021A/zh active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN117654477A (zh) * | 2023-11-28 | 2024-03-08 | 中国矿业大学 | 一种C@CeO2催化剂及其制备方法和在催化二氧化碳解吸中的应用 |
CN117654477B (zh) * | 2023-11-28 | 2024-05-31 | 中国矿业大学 | 一种C@CeO2催化剂及其制备方法和在催化二氧化碳解吸中的应用 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN109174145B (zh) | 一种碳化二钼/二氧化钛复合光催化剂及其制备方法和应用 | |
CN103084196B (zh) | 钽基分级结构空心纳米光催化材料制备方法及其应用 | |
CN109201115B (zh) | 一种光催化产氢催化剂及其制备方法和用途 | |
CN105905940B (zh) | 一种钛酸镍/二氧化钛复合纳米材料的制备方法 | |
CN116903021A (zh) | 一种多孔氧化铈纳米片催化剂及其制备和在光热协同二氧化碳分解反应中的应用 | |
CN113145138A (zh) | 热响应型复合光催化剂及其制备方法和应用 | |
CN108704660B (zh) | 氮空位修饰的富氧二氧化钛纳米复合材料的制备和应用 | |
CN113546659B (zh) | 采用配位法的高分散CeCN-urea-N2材料及其制备方法和应用 | |
CN110721685B (zh) | 一种复合光催化材料及其制备方法和应用 | |
CN114950439B (zh) | 一种高效光解水产氢MOF TiO2-NiO材料及其制备方法和应用 | |
CN112047372A (zh) | 一种CuO多孔纳米片、其制备方法及其在热催化和光热催化方面的应用 | |
CN111774051A (zh) | 光热催化醇类脱水制乙烯和有机产物的催化剂及制备方法 | |
CN110639581A (zh) | 一种WP2/g-C3N4异质结光催化剂的制备方法 | |
CN113877556B (zh) | 羟基氧化铟/改性凹凸棒石光催化复合材料及其制备方法和应用 | |
CN113441165B (zh) | 一种VN/g-C3N4复合光催化剂及其制备方法 | |
CN113441144B (zh) | 一种光催化产氢助催化剂、光催化系统及产氢方法 | |
CN114904511A (zh) | 一种基于SmMnO3钙钛矿的CO2热化学转化材料制备方法和应用 | |
CN109772419B (zh) | 在限域空间构筑氮化碳基超薄纳米片复合材料的制备方法 | |
CN111085228A (zh) | 一种磷掺杂Mn0.3Cd0.7S纳米棒光催化剂及其制备方法与应用 | |
CN112619644A (zh) | 一种以四方钛酸钡为载体的Ru基催化剂及其制备与应用 | |
CN111974428A (zh) | 一种Bi2O2CO3-Bi2WO6复合光催化剂制备方法 | |
CN111589463A (zh) | 一种碳化铁复合一氧化钛的纳米颗粒光热催化剂及其制备 | |
CN113731397B (zh) | 一种光催化复合材料ZnO-KTaO3/K2Ta2O6及其制备方法和应用 | |
CN115569654B (zh) | 一种光热催化还原二氧化碳生成乙烯的催化剂及其制备方法 | |
CN115770576B (zh) | 一种镍钛复合催化剂及其制备方法与应用 |
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 |