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Photoelectrochemical activity of CdS/Ag/TiO₂ nanorod composites: Degradation of nitrobenzene coupled with the concomitant production of molecular hydrogen

Zhang, Yi and Yuan, Chenchen and Wang, Qiang and Hoffmann, Michael R. and Zhang, Xingwang and Nie, Jutao and Hu, Chao and Chen, Shuxin and Qiao, Jie and Wang, Qi and Cong, Yanqing (2019) Photoelectrochemical activity of CdS/Ag/TiO₂ nanorod composites: Degradation of nitrobenzene coupled with the concomitant production of molecular hydrogen. Electrochimica Acta, 328 . Art. No. 135124. ISSN 0013-4686. https://resolver.caltech.edu/CaltechAUTHORS:20191023-153739238

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Abstract

TiO₂ nanorods decorated with CdS and Ag⁰ were prepared and anchored on to a fluorine doped tin oxide (FTO) electrode in order to investigate the photoelectrochemical (PEC) oxidation of nitrobenzene (NB) coupled with simultaneous reduction of water to produce molecular hydrogen (H₂). The modified TiO₂ nanorods (TiO₂-NRs) prepared for 4 h have regular nanoroads with high superficial area and Ag nanoparticles loaded on the surface of nanoroads covered with CdS film uniformly. The nano-composite TiO₂-NRs with photochemically active up to 700 nm with coupled photoconversion efficiencies for NB degradation and H₂ production as high as 4.4%. The surface plasmon resonance (SPR) effect of Ag not only excited the photo-generated electron of Ag nanoparticles, but also promoted the electron transfer from CdS to TiO₂-NRs. NB as a role of electron donor, reacts with hole to improve the efficiency of H₂ production. The heterostructure electrode for solar energy conversion had an important significance for solving environmental pollution and energy crisis.


Item Type:Article
Related URLs:
URLURL TypeDescription
https://doi.org/10.1016/j.electacta.2019.135124DOIArticle
ORCID:
AuthorORCID
Hoffmann, Michael R.0000-0002-0432-6564
Additional Information:© 2019 Elsevier Ltd. Received 22 August 2019, Revised 14 October 2019, Accepted 19 October 2019, Available online 21 October 2019. The authors would like to acknowledge financial support for this work provided by Zhejiang Provincial Natural Science Foundation of China (Grant No. LY16B060001 and LY18B060003), National Nature Science Foundation of China (No. 21876154) and China Scholarship Council (No. 201708330449).
Funders:
Funding AgencyGrant Number
Zhejiang Provincial Natural Science Foundation of ChinaLY16B060001
Zhejiang Provincial Natural Science Foundation of ChinaLY18B060003
National Natural Science Foundation of China21876154
China Scholarship Council201708330449
Record Number:CaltechAUTHORS:20191023-153739238
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20191023-153739238
Official Citation:Yi Zhang, Chenchen Yuan, Qiang Wang, Michael R. Hoffmann, Xingwang Zhang, Jutao Nie, Chao Hu, Shuxin Chen, Jie Qiao, Qi Wang, Yanqing Cong, Photoelectrochemical activity of CdS/Ag/TiO2 nanorod composites: Degradation of nitrobenzene coupled with the concomitant production of molecular hydrogen, Electrochimica Acta, Volume 328, 2019, 135124, ISSN 0013-4686, https://doi.org/10.1016/j.electacta.2019.135124. (http://www.sciencedirect.com/science/article/pii/S0013468619319954)
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:99422
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:23 Oct 2019 22:55
Last Modified:04 Nov 2019 23:25

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