CN109663615A - 一种g-C3N4/ppy/Bi2WO6的固态Z型光催化剂及制备方法 - Google Patents
一种g-C3N4/ppy/Bi2WO6的固态Z型光催化剂及制备方法 Download PDFInfo
- Publication number
- CN109663615A CN109663615A CN201811455720.1A CN201811455720A CN109663615A CN 109663615 A CN109663615 A CN 109663615A CN 201811455720 A CN201811455720 A CN 201811455720A CN 109663615 A CN109663615 A CN 109663615A
- Authority
- CN
- China
- Prior art keywords
- ppy
- solid
- state
- photochemical catalyst
- type photochemical
- 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 47
- 238000002360 preparation method Methods 0.000 title claims abstract description 21
- 238000001027 hydrothermal synthesis Methods 0.000 claims abstract description 8
- 229920000128 polypyrrole Polymers 0.000 claims abstract description 7
- 229920001940 conductive polymer Polymers 0.000 claims abstract description 4
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 36
- 239000000243 solution Substances 0.000 claims description 22
- 229910021529 ammonia Inorganic materials 0.000 claims description 18
- 238000003756 stirring Methods 0.000 claims description 13
- 239000005457 ice water Substances 0.000 claims description 12
- 150000003233 pyrroles Chemical class 0.000 claims description 12
- 230000001699 photocatalysis Effects 0.000 claims description 11
- 238000007146 photocatalysis Methods 0.000 claims description 11
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims description 8
- 229910020350 Na2WO4 Inorganic materials 0.000 claims description 8
- 239000000908 ammonium hydroxide Substances 0.000 claims description 8
- 239000007787 solid Substances 0.000 claims description 7
- 238000001354 calcination Methods 0.000 claims description 6
- 239000000843 powder Substances 0.000 claims description 6
- CHQMHPLRPQMAMX-UHFFFAOYSA-L sodium persulfate Chemical compound [Na+].[Na+].[O-]S(=O)(=O)OOS([O-])(=O)=O CHQMHPLRPQMAMX-UHFFFAOYSA-L 0.000 claims description 6
- UMGDCJDMYOKAJW-UHFFFAOYSA-N thiourea Chemical compound NC(N)=S UMGDCJDMYOKAJW-UHFFFAOYSA-N 0.000 claims description 6
- 238000010792 warming Methods 0.000 claims description 6
- 238000001035 drying Methods 0.000 claims description 5
- 239000007788 liquid Substances 0.000 claims description 5
- 238000013019 agitation Methods 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 239000003795 chemical substances by application Substances 0.000 claims description 4
- 238000001914 filtration Methods 0.000 claims description 4
- 238000000227 grinding Methods 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- 238000005406 washing Methods 0.000 claims description 4
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 2
- 239000004202 carbamide Substances 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 claims description 2
- 238000003837 high-temperature calcination Methods 0.000 claims description 2
- 239000011259 mixed solution Substances 0.000 claims description 2
- 238000006731 degradation reaction Methods 0.000 abstract description 10
- 230000015556 catabolic process Effects 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 4
- 239000000975 dye Substances 0.000 abstract description 3
- 150000002989 phenols Chemical class 0.000 abstract description 3
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium peroxydisulfate Substances [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 description 7
- 229910001870 ammonium persulfate Inorganic materials 0.000 description 7
- 238000002835 absorbance Methods 0.000 description 5
- PPNKDDZCLDMRHS-UHFFFAOYSA-N dinitrooxybismuthanyl nitrate Chemical compound [Bi+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O PPNKDDZCLDMRHS-UHFFFAOYSA-N 0.000 description 4
- 238000006555 catalytic reaction Methods 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 150000002500 ions Chemical class 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 229920000642 polymer Polymers 0.000 description 3
- 238000005070 sampling Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 238000000870 ultraviolet spectroscopy Methods 0.000 description 3
- BTJIUGUIPKRLHP-UHFFFAOYSA-N 4-nitrophenol Chemical compound OC1=CC=C([N+]([O-])=O)C=C1 BTJIUGUIPKRLHP-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 2
- 229910021389 graphene Inorganic materials 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910017604 nitric acid Inorganic materials 0.000 description 2
- 238000013033 photocatalytic degradation reaction Methods 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
- 238000005215 recombination Methods 0.000 description 2
- 230000006798 recombination Effects 0.000 description 2
- 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 2
- 239000004065 semiconductor Substances 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- VAZSKTXWXKYQJF-UHFFFAOYSA-N ammonium persulfate Chemical compound [NH4+].[NH4+].[O-]S(=O)OOS([O-])=O VAZSKTXWXKYQJF-UHFFFAOYSA-N 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008033 biological extinction Effects 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 239000002608 ionic liquid Substances 0.000 description 1
- 239000006193 liquid solution Substances 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 239000011941 photocatalyst Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 description 1
- 230000027756 respiratory electron transport chain Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 230000003595 spectral effect Effects 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
- B01J31/00—Catalysts comprising hydrides, coordination complexes or organic compounds
- B01J31/26—Catalysts comprising hydrides, coordination complexes or organic compounds containing in addition, inorganic metal compounds not provided for in groups B01J31/02 - B01J31/24
- B01J31/34—Catalysts comprising hydrides, coordination complexes or organic compounds containing in addition, inorganic metal compounds not provided for in groups B01J31/02 - B01J31/24 of chromium, molybdenum or tungsten
-
- 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
- B01J23/002—Mixed oxides other than spinels, e.g. perovskite
-
- 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
- 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
- B01J37/10—Heat treatment in the presence of water, e.g. steam
-
- 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
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
- C02F2101/308—Dyes; Colorants; Fluorescent agents
-
- 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
- C02F2101/345—Phenols
-
- 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
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/10—Photocatalysts
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Thermal Sciences (AREA)
- Physics & Mathematics (AREA)
- Inorganic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Catalysts (AREA)
Abstract
本发明公开了一种g‑C3N4/ppy/Bi2WO6的固态Z型光催化剂及制备方法,以g‑C3N4为固态Z型光催化剂的PSⅠ端,以Bi2WO6为固态Z型光催化剂的PSⅡ端,导电聚合物聚吡咯为电子介体。以g‑C3N4包裹聚吡咯后加入Bi2WO6溶液中水热法合成g‑C3N4/ppy/Bi2WO6的固态Z型光催化剂,具有稳定、重复利用高的特点,对染料和酚类化合物均有较好的降解效果。
Description
技术领域
本发明涉及光催化剂技术领域,特别是涉及一种g-C3N4/ppy/Bi2WO6的固态Z型光催化剂及制备方法。
背景技术
大量的改性研究使得g-C3N4光催化剂的性能有了较大的提升,但其可见光利用范围依然有很大的拓展空间,仅通过掺杂改性也无法解决g-C3N4自身电子-空穴容易复合的问题。克服半导体的自身因素限制问题,必从两方面着手:一方面,减小半导体的禁带宽度,可以扩宽光谱响应范围。另一方面,使导带电势更负,价带电势更正。Z型光催化材料,由多组分构成,能同时满足以上两点要求。g-C3N4与另一光催化剂复合构成Z 型结构后,克服了g-C3N4原本存在的电子-空穴复合率高、循环稳定性能差等问题,表现出了更加优异的光催化性能。
Bi2W06具有钙钛矿型的W06的片层和八面体结构,禁带宽度较窄,光生电子和空穴复合率高。为提高其催化性能,很多研究将g-C3N4、石墨烯等与Bi2W06复合制备光催化材料,但是全固态Z型光催化剂较少。并且,未见以聚吡咯(ppy)等导电高聚物作为电子介体的全固态Z型光催化剂。
发明内容
本发明就是针对上述存在的缺陷而提供一种g-C3N4/ppy/Bi2WO6的固态Z型光催化剂及制备方法,以g-C3N4为固态Z型光催化剂的PSⅠ端,以Bi2WO6为固态Z型光催化剂的PSⅡ端,导电聚合物聚吡咯为电子介体。以g-C3N4包裹聚吡咯后加入Bi2WO6溶液中水热法合成g-C3N4/ppy/Bi2WO6的固态Z型光催化剂,具有稳定、重复利用高的特点,对染料和酚类化合物均有较好的降解效果。
本发明的一种g-C3N4/ppy/Bi2WO6的固态Z型光催化剂及制备方法技术方案为,一种g-C3N4/ppy/Bi2WO6的固态Z型光催化剂,以g-C3N4为固态Z型光催化剂的PSⅠ端,以Bi2WO6为固态Z型光催化剂的PSⅡ端,导电聚合物聚吡咯为电子介体。
所述的g-C3N4/ppy/Bi2WO6的固态Z型光催化剂的制备方法,以g-C3N4包裹聚吡咯后加入Bi2WO6溶液中水热法合成g-C3N4/ppy/Bi2WO6的固态Z型光催化剂。
所述的g-C3N4/ppy/Bi2WO6的固态Z型光催化剂的制备方法,包括下列步骤:
(1)g-C3N4的制备:将g-C3N4的前驱体研磨30-40min后,升温至500-550℃煅烧5-6h,得到黄色固体粉末;
(2) g-C3N4/ppy的制备:将g-C3N4加入氨水中,磁力搅拌加入吡咯后,冰水浴的条件下搅拌0.4-0.8h得到吡咯氨水溶液;将过硫酸钠加入氨水中形成APS氨水溶液,冰水浴搅拌0.4-0.8h;将APS氨水溶液加入吡咯氨水溶液中冰水浴搅拌20-28h;过滤洗涤后于50-60℃低温烘干得到黑色g-C3N4/ppy粉末;
(3)g-C3N4/ppy/Bi2WO6的制备:分别配置Bi(NO3)3和Na2WO4溶液,取g-C3N4/ppy加入Na2WO4溶液充分搅拌后,再缓慢加入Bi(NO3)3溶液,将混合物转移至水热反应釜中,170-190℃反应23-25h;产物过滤并洗涤即可得到g-C3N4/ppy/Bi2WO6固态Z型光催化剂。
步骤(1)中,g-C3N4由前驱体高温煅烧获得,前驱体为尿素,二氰二胺,硫脲中的至少一种,将前驱体以2℃/ min -5℃/ min的速度升温至500-550℃煅烧4-4.5h,然后保温2-3h。
步骤(1)中,升温速率为2℃/ min -5℃/ min。
步骤(2)中,所述的氨水浓度为0.01mol/L。
步骤(2)中,吡咯氨水溶液的浓度为0.06-0.07(V/V),APS氨水溶液的浓度为133-155g/L,g-C3N4与吡咯氨水溶液、APS氨水溶液的混合溶液的固液比为0.912-9.15 g/L。
步骤(3)中,Bi(NO3)3和Na2WO4摩尔比为2:1,g-C3N4/ppy与Bi2WO6溶液的固液比为0.274-2.74g/L。
光催化性能的评价方法:
整个光催化反应在光催化反应器中进行,以汞灯为光源,分别将50mL 20mg/L的污染物加入光催化试管中,加入0.01g g-C3N4/ppy/Bi2WO6固态Z型光催化剂,前30min黑暗条件下进行吸附,然后打开进行光催化降解。每隔5分钟取样利用紫外可见分光光度计测量吸光度。记录浓度随时间的变化关系。
本发明的有益效果为:本发明利用具有共轭π结构的导电高聚物聚吡咯作为g-C3N4/Bi2WO6固态Z型光催化电子介体,旨在加快电子迁移速率,促进电子空穴有效分离,Z型光催化剂传统的电子介体采用液相溶液中离子态氧化还原电子对,但是存在对离子对的浓度要求,和离子对自身可以与光电子发生反应等问题。全固态Z型光催化剂引入固态导体作为电子介体,克服液相离子对的不足。固态电子介体大多采用高电导率的金属( Au、Ag 和Cd)和石墨烯等。ppy作为导电高聚物,分子中存在大∏共轭电子云,作为电子介体有利于提高电子迁移率。本发明的g-C3N4/ppy/Bi2WO6固态Z型光催化剂具有稳定、重复利用高的特点,对染料和酚类化合物均有较好的降解效果。
图1为本发明制备的g-C3N4/ppy/Bi2WO6的固态Z型光催化剂的TEM透射图片,由图中可看出棒状Bi2WO6与块状g-C3N4结合紧密,图2 所示为g-C3N4/ppy/Bi2WO6的固态Z型光催化剂的SEM电镜图片,可看出块状物质表面形成致密的ppy球形颗粒层。
附图说明:
图1所示为g-C3N4/ppy/Bi2WO6的固态Z型光催化剂的TEM透射图片;
图2 所示为g-C3N4/ppy/Bi2WO6的固态Z型光催化剂的SEM电镜图片;
图3 所示为g-C3N4/ppy/Bi2WO6的固态Z型光催化剂对罗丹明的循环光降解曲线;
图4所示为g-C3N4/ppy/Bi2WO6的固态Z型光催化剂对对硝基苯酚的光降解曲线。
具体实施方式:
为了更好地理解本发明,下面用具体实例来详细说明本发明的技术方案,但是本发明并不局限于此。
实施例1
将10g 二氰二胺研磨30-40min后至于坩埚中,马弗炉中以2℃/ min 升温至550℃煅烧4h,然后550℃保温2h,得到g-C3N4黄色固体粉末。
称取0.274g g-C3N4加入到30ml浓度为0.01mol/L的氨水中。磁力搅拌同时加入1.5ml吡咯,冰水浴的条件搅拌0.5h。称取4.564g过硫酸铵加入30ml 0.01mol/L的氨水中形成APS溶液冰水浴0.5h后将两种溶液混合在一起冰水浴搅拌24h。过滤洗涤将黑色产物于50-60℃低温烘干。
称取Bi(NO3)3·5H2O 4.8507g溶于10ml硝酸中。称取1.6493g Na2WO4溶于40ml水中。取0.0685g g-C3N4/ppy加入Na2WO4均匀搅拌,缓慢加入Bi(NO3)3溶液,均匀搅拌后将混合物转移至水热反应釜中,180℃反应24h。
产物过滤并洗涤即可得到g-C3N4/ppy/Bi2WO6固态Z型光催化剂。
将50mL 20mg/L罗丹明溶液加入光催化试管中,加入0.01g g-C3N4/ppy/Bi2WO6的固态Z型光催化剂,前30min黑暗条件下进行吸附,然后打开光源进行光催化降解。每隔5分钟取样利用紫外可见分光光度计测量吸光度。记录吸光度随时间的变化关系。将使用过后的0.01g g-C3N4/ppy/Bi2WO6固态Z型光催化剂低温烘干后重新放入新的50mL 20mg/L的罗丹明溶液中重复光降解过程。循环操作5次,分别记录吸光度随时间的变化关系,绘制光降解曲线图,如图3所示。可以看出g-C3N4/ppy/Bi2WO6样品的性能非常稳定,5次光降解的降解率均能达到90%以上,循环操作5次后其活性并未发生明显变化。
实施例2
将10g 硫脲研磨30-40min后至于坩埚中,马弗炉中以2℃/ min 升温至550℃煅烧4h,550℃保温2h,得到g-C3N4黄色固体粉末。
称取0.274g g-C3N4加入到30ml浓度为0.01mol/L的氨水中。磁力搅拌同时加入1.5ml吡咯,冰水浴的条件搅拌0.5h。称取4.564g过硫酸钠加入30ml 0.01mol/L的氨水中形成APS溶液冰水浴0.5h后将两种溶液混合在一起冰水浴搅拌24h。过滤洗涤将黑色产物于50-60℃低温烘干。
称取Bi(NO3)3·5H2O 4.8507g溶于10ml硝酸中。称取1.6493g Na2WO4溶于40ml水中。在0.0137g-0.137g之间由小到大依次随机取1#,2#,3#,4# g-C3N4/ppy加入Na2WO4均匀搅拌,缓慢加入Bi(NO3)3溶液,均匀搅拌后将混合物转移至水热反应釜中,180℃反应24h。产物过滤并洗涤即可分别得到1#,2#,3#,4# g-C3N4/ppy/Bi2WO6固态Z型光催化剂,对应的g-C3N4/ppy与Bi2WO6溶液的固液比分别为0.274,0.548,1.096,2.74g/L。
分别将50mL 20mg/L的对硝基苯酚加入光催化试管中,加入0.01g的1#-4#g-C3N4/ppy/Bi2WO6固态Z型光催化剂样品,前30min黑暗条件下进行吸附,然后打开光源进行光催化降解。每隔5分钟取样利用紫外可见分光光度计测量吸光度。记录吸光度随时间的变化关系,绘制光降解曲线图,如图4所示,可见,1-4#g-C3N4/ppy/Bi2WO6固态Z型光催化剂对对硝基苯酚降解速率都很快,降解率都在90%以上。
Claims (8)
1.一种g-C3N4/ppy/Bi2WO6的固态Z型光催化剂,其特征在于,以g-C3N4为固态Z型光催化剂的PSⅠ端,以Bi2WO6为固态Z型光催化剂的PSⅡ端,导电聚合物聚吡咯为电子介体。
2.如权利要求1所述的g-C3N4/ppy/Bi2WO6的固态Z型光催化剂的制备方法,其特征在于,以g-C3N4包裹聚吡咯后加入Bi2WO6溶液中水热法合成g-C3N4/ppy/Bi2WO6的固态Z型光催化剂。
3.根据权利要求2所述的g-C3N4/ppy/Bi2WO6的固态Z型光催化剂的制备方法,其特征在于,包括下列步骤:
(1)g-C3N4的制备:将g-C3N4的前驱体研磨30-40min后,升温至500-550℃煅烧5-6h,得到黄色固体粉末;
(2) g-C3N4/ppy的制备:将g-C3N4加入氨水中,磁力搅拌加入吡咯后,冰水浴的条件下搅拌0.4-0.8h得到吡咯氨水溶液;将过硫酸钠加入氨水中形成APS氨水溶液,冰水浴搅拌0.4-0.8h;将APS氨水溶液加入吡咯氨水溶液中冰水浴搅拌20-28h;过滤洗涤后于50-60℃低温烘干得到黑色g-C3N4/ppy粉末;
(3)g-C3N4/ppy/Bi2WO6的制备:分别配置Bi(NO3)3和Na2WO4溶液,取g-C3N4/ppy加入Na2WO4溶液充分搅拌后,再缓慢加入Bi(NO3)3溶液,将混合物转移至水热反应釜中,170-190℃反应23-25h ;产物过滤并洗涤即可得到g-C3N4/ppy/Bi2WO6固态Z型光催化剂。
4. 根据权利要求3所述的g-C3N4/ppy/Bi2WO6的固态Z型光催化剂的制备方法,其特征在于,步骤(1)中,g-C3N4由前驱体高温煅烧获得,前驱体为尿素,二氰二胺,硫脲中的至少一种,将前驱体以2℃/ min -5℃/ min的速度升温至500-550℃煅烧4-4.5h,然后保温2-3h。
5. 根据权利要求3所述的g-C3N4/ppy/Bi2WO6的固态Z型光催化剂的制备方法,其特征在于,步骤(1)中,升温速率为2℃/ min -5℃/ min。
6.根据权利要求3所述的g-C3N4/ppy/Bi2WO6的固态Z型光催化剂的制备方法,其特征在于,步骤(2)中,所述的氨水浓度为0.01mol/L。
7. 根据权利要求3所述的g-C3N4/ppy/Bi2WO6的固态Z型光催化剂的制备方法,其特征在于,步骤(2)中,吡咯氨水溶液的浓度为0.06-0.07(V/V),APS氨水溶液的浓度为133-155g/L,g-C3N4与吡咯氨水溶液、APS氨水溶液的混合溶液的固液比为0.912-9.15 g/L。
8.根据权利要求3所述的g-C3N4/ppy/Bi2WO6的固态Z型光催化剂的制备方法,其特征在于,步骤(3)中,Bi(NO3)3和Na2WO4摩尔比为2:1,g-C3N4/ppy与Bi2WO6溶液的固液比为0.274-2.74g/L。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201811455720.1A CN109663615A (zh) | 2018-11-30 | 2018-11-30 | 一种g-C3N4/ppy/Bi2WO6的固态Z型光催化剂及制备方法 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201811455720.1A CN109663615A (zh) | 2018-11-30 | 2018-11-30 | 一种g-C3N4/ppy/Bi2WO6的固态Z型光催化剂及制备方法 |
Publications (1)
Publication Number | Publication Date |
---|---|
CN109663615A true CN109663615A (zh) | 2019-04-23 |
Family
ID=66145022
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201811455720.1A Pending CN109663615A (zh) | 2018-11-30 | 2018-11-30 | 一种g-C3N4/ppy/Bi2WO6的固态Z型光催化剂及制备方法 |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN109663615A (zh) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110201725A (zh) * | 2019-05-29 | 2019-09-06 | 兰州城市学院 | Bi2WO6@TCNQ光催化剂及其制备方法和应用 |
CN112495436A (zh) * | 2020-12-01 | 2021-03-16 | 江苏科技大学 | 一种聚吡咯/二氧化钛/石墨相氮化碳三元复合光催化材料及其制备方法 |
CN113231099A (zh) * | 2021-05-21 | 2021-08-10 | 吉林大学 | 一种z型聚吡咯-钨酸铋光催化剂的制备及应用 |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102941124A (zh) * | 2012-11-21 | 2013-02-27 | 江南大学 | 一种可见光响应的聚吡咯/Bi2WO6复合催化剂及其制备方法 |
CN102964595A (zh) * | 2012-11-12 | 2013-03-13 | 南昌航空大学 | 一种钡镁铁氧体/sdbs改性碳纳米管/聚吡咯复合吸波材料的制备方法 |
US20130168228A1 (en) * | 2011-04-12 | 2013-07-04 | Geoffrey A. Ozin | Photoactive Material Comprising Nanoparticles of at Least Two Photoactive Constituents |
CN105819499A (zh) * | 2016-03-23 | 2016-08-03 | 昆明理工大学 | 一种具有光催化活性的氧化亚锡微粒的制备方法 |
CN106824247A (zh) * | 2017-02-28 | 2017-06-13 | 陕西科技大学 | 一种钨酸铋/氮化碳/磷酸铋复合光催化剂及其制备方法和应用 |
US20170173571A1 (en) * | 2015-12-17 | 2017-06-22 | Soochow University | Composite material used for catalyzing and degrading nitrogen oxide and preparation method and application thereof |
CN108295830A (zh) * | 2018-01-18 | 2018-07-20 | 中国建筑材料科学研究总院有限公司 | 暴露001、101晶面的TiO2/海泡石复合凝胶及其制备方法 |
-
2018
- 2018-11-30 CN CN201811455720.1A patent/CN109663615A/zh active Pending
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20130168228A1 (en) * | 2011-04-12 | 2013-07-04 | Geoffrey A. Ozin | Photoactive Material Comprising Nanoparticles of at Least Two Photoactive Constituents |
CN102964595A (zh) * | 2012-11-12 | 2013-03-13 | 南昌航空大学 | 一种钡镁铁氧体/sdbs改性碳纳米管/聚吡咯复合吸波材料的制备方法 |
CN102941124A (zh) * | 2012-11-21 | 2013-02-27 | 江南大学 | 一种可见光响应的聚吡咯/Bi2WO6复合催化剂及其制备方法 |
US20170173571A1 (en) * | 2015-12-17 | 2017-06-22 | Soochow University | Composite material used for catalyzing and degrading nitrogen oxide and preparation method and application thereof |
CN105819499A (zh) * | 2016-03-23 | 2016-08-03 | 昆明理工大学 | 一种具有光催化活性的氧化亚锡微粒的制备方法 |
CN106824247A (zh) * | 2017-02-28 | 2017-06-13 | 陕西科技大学 | 一种钨酸铋/氮化碳/磷酸铋复合光催化剂及其制备方法和应用 |
CN108295830A (zh) * | 2018-01-18 | 2018-07-20 | 中国建筑材料科学研究总院有限公司 | 暴露001、101晶面的TiO2/海泡石复合凝胶及其制备方法 |
Non-Patent Citations (1)
Title |
---|
FENGLI ZHANG ET AL: "Synthesis of Visible-Light-Driven g-C3N4/PPy/Ag Ternary Photocatalyst with Improved Photocatalytic Performance", 《CHINESE JOURNAL OF CHEMISTRY》 * |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110201725A (zh) * | 2019-05-29 | 2019-09-06 | 兰州城市学院 | Bi2WO6@TCNQ光催化剂及其制备方法和应用 |
CN112495436A (zh) * | 2020-12-01 | 2021-03-16 | 江苏科技大学 | 一种聚吡咯/二氧化钛/石墨相氮化碳三元复合光催化材料及其制备方法 |
CN113231099A (zh) * | 2021-05-21 | 2021-08-10 | 吉林大学 | 一种z型聚吡咯-钨酸铋光催化剂的制备及应用 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN109663615A (zh) | 一种g-C3N4/ppy/Bi2WO6的固态Z型光催化剂及制备方法 | |
CN103480400B (zh) | 一种磷酸银/氧化锌复合光催化材料及其制备方法 | |
CN106881111B (zh) | 氧化亚铜和银共同负载的钒酸铋复合光催化剂及其制备方法和应用 | |
CN103920508B (zh) | 一种经硝酸处理的碳纤维负载卤氧化铋纳米花及其制备方法 | |
CN103611549B (zh) | 铜锌锡硫/氧化石墨烯复合半导体光催化剂的制备方法 | |
CN102698784B (zh) | 一种可见光响应催化剂及其制备方法 | |
CN105032486A (zh) | 一种纺锤状金属有机框架化合物颗粒的制备方法 | |
CN104743533A (zh) | 一种NiCoP纳米材料的制备方法 | |
CN105944747A (zh) | Ag2CrO4负载的g-C3N4复合光催化剂及其制备方法和应用 | |
CN106902890A (zh) | 一种Cu‑BTC/钒酸铋/SWCNTs三元异质结构光催化剂及制备方法和应用 | |
CN105879896B (zh) | Cu3B2O6/g‑C3N4异质结光催化剂的制备方法及其降解亚甲基蓝染料废水的方法 | |
CN115445650A (zh) | 一种氮化碳材料、其制备方法及应用 | |
CN110155958B (zh) | 一种绣球状Cu2-xSe纳米材料及其制备和应用 | |
CN104741140B (zh) | 一种胺基功能化介孔二氧化硅微球负载型非均相催化剂及制备方法与应用 | |
CN110407245A (zh) | 一锅法制备薄片状和球状氧化亚铜纳米颗粒的方法 | |
CN103785425A (zh) | 一种花状Bi2O(OH)2SO4光催化剂的制备方法及应用 | |
CN109550510A (zh) | 一种碳钽共掺杂氯氧铋粉末的制备方法 | |
CN106881118B (zh) | 一种离子交换法合成异质结光催化剂的方法 | |
CN109160494B (zh) | 一种毛球状CdSe纳米材料的制备方法 | |
CN104971746A (zh) | 一种掺杂量子点负载还原氧化石墨烯光催化剂及其应用 | |
CN110090651B (zh) | 一种石墨烯基硫化物异质结光催化剂及其制备方法和用途 | |
Yin et al. | A new type of dual-nuclear binary composite catalyst BiCoPc/MIL-100 (Fe) for synergistic photocatalytic degradation of dyes | |
CN107244691A (zh) | 一种分等级结构光催化剂的合成方法 | |
CN108452789A (zh) | 复合光催化剂及其制备方法和降解有机酚的方法 | |
CN111185245A (zh) | 一种氧化石墨烯负载钒酸铋纳米复合材料及其制备方法 |
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 |