The DOI matches its Crossref record; 3 of the 3 references it cites were found in a registry or an index.
Twins in Cd1−xZnxS solid solution: Highly efficient photocatalyst for hydrogen generation from water
Abstract
Cd1−xZnxS solid solution with nano-twin structures are synthesized and exhibit superior photocatalytic activities for H2 evolution from water under visible light irradiation (λ ≥ 430 nm) without noble metal co-catalysts. Such Cd0.5Zn0.5S nanocrystals show the highest activity for hydrogen evolution with an extremely high apparent quantum yield (AQY = 43%) at 425 nm, achieving a hydrogen evolution rate of 1.79 mmol h−1 without noble metals. The hydrogen evolution rate of 1.70 mmol h−1 was achieved under simulated sunlight conditions (without infrared light). The “back to back” potential formed by parallel nano-twins in the Cd1−xZnxS crystals can significantly improve the separation of the photo-generated electrons/holes (preventing their recombination) thus enhancing the photocatalytic activity. Photodeposition experiments of noble metals strongly support such a mechanism. It is found that noble metals were selectively photo-deposited at central regions between the twin boundaries. The concentration of free electrons at the central region of twins was markedly higher and the twins can effectively separate the H2 evolution sites (electrons) from oxidation reaction sites (holes).
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Citations
Cites
Electrochemical Photolysis of Water at a Semiconductor Electrode
FUJISHIMA, A., & HONDA, K. (1972) · Nature · doi:10.1038/238037a0 · Cited by 34,169
Semiconductor-based Photocatalytic Hydrogen Generation
Chen, X., Shen, S., Guo, L., & Mao, S. S. (2010) · Chemical Reviews · doi:10.1021/cr1001645 · Cited by 7,876
Self-citationZong, X., Yan, H., Wu, G., Ma, G., Wen, F., Wang, L., & Li, C. (2008) · Journal of the American Chemical Society · doi:10.1021/ja8007825 · Cited by 1,884
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Cited by
Engineering heterogeneous semiconductors for solar water splitting
Li, X., Yu, J., Low, J., Fang, Y., Xiao, J., & Chen, X. (2015) · Journal of Materials Chemistry A · doi:10.1039/c4ta04461d · Cited by 1,888
Cheng, L., Xiang, Q., Liao, Y., & Zhang, H. (2018) · Energy & Environmental Science · doi:10.1039/c7ee03640j · Cited by 1,733
Defect engineering in photocatalytic materials
Bai, S., Zhang, N., Gao, C., & Xiong, Y. (2018) · Nano Energy · doi:10.1016/j.nanoen.2018.08.058 · Cited by 1,236
Metal sulphide semiconductors for photocatalytic hydrogen production
Zhang, K., & Guo, L. (2013) · Catalysis Science & Technology · doi:10.1039/c3cy00018d · Cited by 543
Self-citationPhotocatalytic hydrogen production using twinned nanocrystals and an unanchored NiSx co-catalyst
Liu, M., Chen, Y., Su, J., Shi, J., Wang, X., & Guo, L. (2016) · Nature Energy · doi:10.1038/nenergy.2016.151 · Cited by 401
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Metadata
- Authors
- Liu, M., Wang, L., (Max) Lu, G., Yao, X., & Guo, L.
- Venue
- Energy & Environmental Science
- Publisher
- Royal Society of Chemistry (RSC)
- Published
- 2011
- Volume
- 4
- Issue
- 4
- Pages
- 1372
- ISSN
- 1754-5692 (ISSN-L)
- 1754-5706
- OpenAlex
- W2151703332
- Cited by
- 389
- References
- 3
- FWCI
- 8.14
- Type
- journal article
- Language
- en
- Open access
- closed
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