The photo-electrocatalytic property of hollow mesoporous graphene oxide/tungsten trioxide/titanium dioxide membrane photo-anode
Titania (TiO2) is one of promising photo catalysts for its high ability to resistant photo corrosion and environmental friendliness, but its photocatalytic activity is too low to be used in industry. To find an approach to solve this problem, graphene oxide (GO), tungsten trioxide (WO3) and TiO2 com...
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Elsevier
2025-01-01
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| author | Yuan Li Xinying Sun Jiajia Chen Shuping Luo Guohua Li |
| author_facet | Yuan Li Xinying Sun Jiajia Chen Shuping Luo Guohua Li |
| author_sort | Yuan Li |
| collection | DOAJ |
| description | Titania (TiO2) is one of promising photo catalysts for its high ability to resistant photo corrosion and environmental friendliness, but its photocatalytic activity is too low to be used in industry. To find an approach to solve this problem, graphene oxide (GO), tungsten trioxide (WO3) and TiO2 composite with hollow mesoporous structure was prepared by a two-step spray drying method. The composite was used as raw material to constitute a membrane onto ITO glass to form a membrane photo-anode. In this way, its photo-electrocatalytic property was tested. The morphology, crystal phase, microstructure and specific surface area of the composite were characterized by SEM, XRD, TEM and BET, respectively. The surface potential distribution and optical property of the anode were measured by a Kelvin Probe Force Microscopy and a Fs-5 Steady-State Fluorescence Spectrometer, respectively. The forbidden bandwidth of the GO-WO3/TiO2 composite is 2.30 eV, which is much lower than that of the WO3/TiO2 composite, 2.92 eV. When the content of GO in the anode is around 1 wt%, its light absorption ability is the best among all the anodes with different contents of GO, and its photocatalytic ability to degrade methyl orange is the strongest as our experiments concerned. These findings indicate that the addition of GO into the WO3/TiO2 composite can improve its photo-electrocatalytic property. The construction of membrane photo-anode is an efficient approach to solve the problem of the recovery and secondary utilization of nanoscale powder in water treatment. |
| format | Article |
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| institution | Kabale University |
| issn | 2405-8440 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Elsevier |
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| series | Heliyon |
| spelling | doaj-art-d8be5b9e2b6c4c608da5ed5c387b89202025-01-17T04:51:12ZengElsevierHeliyon2405-84402025-01-01111e41415The photo-electrocatalytic property of hollow mesoporous graphene oxide/tungsten trioxide/titanium dioxide membrane photo-anodeYuan Li0Xinying Sun1Jiajia Chen2Shuping Luo3Guohua Li4College of Chemical Engineering, Zhejiang University of Technology, ChinaCollege of Chemical Engineering, Zhejiang University of Technology, ChinaCollege of Chemical Engineering, Zhejiang University of Technology, ChinaCollege of Chemical Engineering, Zhejiang University of Technology, China; State Key Laboratory of Green Chemistry Synthesis Technology, China; Key Laboratory of Green Chemistry-Synthesis Technology of Zhejiang Province, Hangzhou, 310032, ChinaCollege of Chemical Engineering, Zhejiang University of Technology, China; State Key Laboratory of Green Chemistry Synthesis Technology, China; Key Laboratory of Green Chemistry-Synthesis Technology of Zhejiang Province, Hangzhou, 310032, China; Corresponding author. College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310032, China.Titania (TiO2) is one of promising photo catalysts for its high ability to resistant photo corrosion and environmental friendliness, but its photocatalytic activity is too low to be used in industry. To find an approach to solve this problem, graphene oxide (GO), tungsten trioxide (WO3) and TiO2 composite with hollow mesoporous structure was prepared by a two-step spray drying method. The composite was used as raw material to constitute a membrane onto ITO glass to form a membrane photo-anode. In this way, its photo-electrocatalytic property was tested. The morphology, crystal phase, microstructure and specific surface area of the composite were characterized by SEM, XRD, TEM and BET, respectively. The surface potential distribution and optical property of the anode were measured by a Kelvin Probe Force Microscopy and a Fs-5 Steady-State Fluorescence Spectrometer, respectively. The forbidden bandwidth of the GO-WO3/TiO2 composite is 2.30 eV, which is much lower than that of the WO3/TiO2 composite, 2.92 eV. When the content of GO in the anode is around 1 wt%, its light absorption ability is the best among all the anodes with different contents of GO, and its photocatalytic ability to degrade methyl orange is the strongest as our experiments concerned. These findings indicate that the addition of GO into the WO3/TiO2 composite can improve its photo-electrocatalytic property. The construction of membrane photo-anode is an efficient approach to solve the problem of the recovery and secondary utilization of nanoscale powder in water treatment.http://www.sciencedirect.com/science/article/pii/S2405844024174464TitaniaTungsten trioxideGraphene oxideHollow mesoporous structureMembrane photo-anodePhoto-electrocatalytic property |
| spellingShingle | Yuan Li Xinying Sun Jiajia Chen Shuping Luo Guohua Li The photo-electrocatalytic property of hollow mesoporous graphene oxide/tungsten trioxide/titanium dioxide membrane photo-anode Heliyon Titania Tungsten trioxide Graphene oxide Hollow mesoporous structure Membrane photo-anode Photo-electrocatalytic property |
| title | The photo-electrocatalytic property of hollow mesoporous graphene oxide/tungsten trioxide/titanium dioxide membrane photo-anode |
| title_full | The photo-electrocatalytic property of hollow mesoporous graphene oxide/tungsten trioxide/titanium dioxide membrane photo-anode |
| title_fullStr | The photo-electrocatalytic property of hollow mesoporous graphene oxide/tungsten trioxide/titanium dioxide membrane photo-anode |
| title_full_unstemmed | The photo-electrocatalytic property of hollow mesoporous graphene oxide/tungsten trioxide/titanium dioxide membrane photo-anode |
| title_short | The photo-electrocatalytic property of hollow mesoporous graphene oxide/tungsten trioxide/titanium dioxide membrane photo-anode |
| title_sort | photo electrocatalytic property of hollow mesoporous graphene oxide tungsten trioxide titanium dioxide membrane photo anode |
| topic | Titania Tungsten trioxide Graphene oxide Hollow mesoporous structure Membrane photo-anode Photo-electrocatalytic property |
| url | http://www.sciencedirect.com/science/article/pii/S2405844024174464 |
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