Noble-metal-free CuS/CdS photocatalyst for efficient visible-light-driven photocatalytic H2 production from water

Zhang, Fan; Zhuang, Huaqiang; Zhang, Wenming; Yin, Jun; Cao, Fu-Hu; Pan, Yun‐Xiang

doi:10.1016/j.cattod.2018.03.060

Cited by 88 publications

(47 citation statements)

References 52 publications

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“…There was no observable indication of W 5 + ,w hich gives a characteristic 4f 7/2 peak at approximately 34.5 eV. [31] Thisi mplies that there is no detectable amount of trapped Li ions.…”

Section: Deterioration Of the Cds Coatingmentioning

confidence: 87%

“…The doubleti nt he Cd 3d spectrum in Figure 6e at 405.7 and 412.6 eV can be attributed to 3d 5/2 and 3d 3/2 ,r espectively. [31] In contrastt ot he trend in W4fs pectra, the pristinee lectrode exhibits stronger peaks than the cycled electrode. This change again is in agreement with our observation of CdS photocorrosion.…”

Section: Deterioration Of the Cds Coatingmentioning

confidence: 93%

“…[31] The peak at 169.1 eV corresponds to the existence of SO 4 2À , [32] which is attributedt othe oxidationo fSi nC dS as result of the proposed degradation/photocorrosion. [31] The peak at 169.1 eV corresponds to the existence of SO 4 2À , [32] which is attributedt othe oxidationo fSi nC dS as result of the proposed degradation/photocorrosion.…”

Section: Deterioration Of the Cds Coatingmentioning

confidence: 95%

“…[29] To further investigate the mechanismo fC dS degradation/ photocorrosion upon cycling, XPS was applied to the pristine and cycled (after 10 cycles) photoelectrodes (Figure 6e). [31] Thisi mplies that there is no detectable amount of trapped Li ions. After ten cycles, the overall intensity of Ws ignals increasesb ecause of the decrease in CdS coating thickness due to photocorrosion.…”

Section: Deterioration Of the Cds Coatingmentioning

confidence: 98%

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Lithium Photo‐intercalation of CdS‐Sensitized WO₃ Anode for Energy Storage and Photoelectrochromic Applications

et al. 2019

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Integration of solar‐energy harvesting and storage functions has attracted significant research attention, as it holds promise for ultimate development of light‐chargeable devices. In this context, a functional nanocomposite anode that not only permits electrochemical energy storage through Li‐ion photo‐intercalation, but also exhibits potential for photoelectrochromic applications, was investigated. The nanocomposite is made of the Li‐ion intercalation compound WO3, thinly coated with TiO2 and sensitized by the photoactive semiconductor CdS. During light exposure, the photoelectrons from CdS are transported to the WO3/electrolyte interface, where Li‐ion intercalation takes place. Photoelectron transport is facilitated by the interfacial TiO2 layer. The WO3 was shown to be functional in multiple photocharge–discharge cycles, but the CdS suffers from degradation and photocorrosion. Hence, the selection of compatible semiconductors and protective coating strategies should be pursued to overcome these issues.

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“…There was no observable indication of W 5 + ,w hich gives a characteristic 4f 7/2 peak at approximately 34.5 eV. [31] Thisi mplies that there is no detectable amount of trapped Li ions.…”

Section: Deterioration Of the Cds Coatingmentioning

confidence: 87%

Section: Deterioration Of the Cds Coatingmentioning

confidence: 93%

Section: Deterioration Of the Cds Coatingmentioning

confidence: 95%

Section: Deterioration Of the Cds Coatingmentioning

confidence: 98%

See 2 more Smart Citations

Lithium Photo‐intercalation of CdS‐Sensitized WO₃ Anode for Energy Storage and Photoelectrochromic Applications

et al. 2019

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“…Hydrogen has received extensive attention as a new energy source and solar energy is considered to be one of the best ways to produce hydrogen by splitting water under the action of a catalyst. [1][2][3][4][5][6] Over past few years, CdS, as an important semiconductor material, has been widely used in photocatalytic reactions. [7,8] However, CdS is proved to suffer photocorrosion under light, and its catalytic activity would be reduced.…”

Section: Introductionmentioning

confidence: 99%

MoP₄ Nanoparticles as a Novel and Efficient Cocatalyst for Enhanced Photocatalytic Hydrogen Evolution

Liu

Jiang

et al. 2019

ChemCatChem

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In this work, MoP 4 nanoparticles were in situ loaded onto CdS nanorods (CdS NRs) via vapor-solid phase synthesis and the composite of MoP 4 /CdS proved to be active for photocatalytic hydrogen evolution under visible-light irradiation, in which MoP 4 nanoparticles can work as a novel and efficient cocatalyst. MoP 4 /CdS can achieve a much higher hydrogen evolution rate of 494.5 μmol h À 1 than that of the pristine CdS NRs (22.6 times), and even higher than of the noble metal Pt (2.0 %) loaded on CdS NRs, indicating that MoP 4 nanoparticles can replace noble metals as a potential cocatalyst with ultra-high catalytic activity.Based on the structural and photoelectrical characterization results, the catalytic mechanism of MoP 4 /CdS was proposed. The enhanced photocatalytic activity of MoP 4 /CdS is attributed to the promoted charge separation, low hydrogen evolution over-potential, a long average lifetime for photogenerated carriers and enhanced abilities to inhibit electron-hole pair recombination. In the field, this work provides guidance for the design and preparation of novel and efficient cocatalyst of phosphide.

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Nitrogen‐Doped Carbon‐Coated CuO‐In₂O₃ p–n Heterojunction for Remarkable Photocatalytic Hydrogen Evolution

Sun

Zhuang

Yuan

et al. 2019

Advanced Energy Materials

182

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CuO as a catalyst has shown promising application prospects in photocatalytic splitting of water into hydrogen (H2). However, the instability of CuO in amine aqueous solution limits the applications of CuO‐based photocatalysts in the photocatalytic H2 evolution. In this work, a novel dodecahedral nitrogen (N)‐doped carbon (C) coated CuO‐In2O3 p–n heterojunction (DNCPH) is designed and synthesized by directly pyrolyzing benzimidazole‐modified dodecahedral Cu/In‐based metal‐organic frameworks, showing long‐term stability in triethanolamine (TEOA) aqueous solution and excellent photocatalytic H2 production efficiency. The improved stability of DNCPH in TEOA solution is ascribed to the alleviation of electron deficiency in CuO by forming the p–n heterojunction and the protection with coated N‐doped C layer. Based on detailed theoretical calculations and experimental studies, it is found that the improved separation efficiency of photogenerated electron/hole pairs and the mediated adsorption behavior (|∆GH*|→0) by coupling N‐doped C layer with CuO‐In2O3 p–n heterojunction lead to the excellent photocatalytic H2 production efficiency of DNCPH. This work provides a feasible strategy for effectively applying CuO‐based photocatalysts in photocatalytic H2 production.

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Noble-metal-free CuS/CdS photocatalyst for efficient visible-light-driven photocatalytic H2 production from water

Cited by 88 publications

References 52 publications

Lithium Photo‐intercalation of CdS‐Sensitized WO₃ Anode for Energy Storage and Photoelectrochromic Applications

Lithium Photo‐intercalation of CdS‐Sensitized WO₃ Anode for Energy Storage and Photoelectrochromic Applications

MoP₄ Nanoparticles as a Novel and Efficient Cocatalyst for Enhanced Photocatalytic Hydrogen Evolution

Nitrogen‐Doped Carbon‐Coated CuO‐In₂O₃ p–n Heterojunction for Remarkable Photocatalytic Hydrogen Evolution

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Noble-metal-free CuS/CdS photocatalyst for efficient visible-light-driven photocatalytic H2 production from water

Cited by 88 publications

References 52 publications

Lithium Photo‐intercalation of CdS‐Sensitized WO3 Anode for Energy Storage and Photoelectrochromic Applications

Lithium Photo‐intercalation of CdS‐Sensitized WO3 Anode for Energy Storage and Photoelectrochromic Applications

MoP4 Nanoparticles as a Novel and Efficient Cocatalyst for Enhanced Photocatalytic Hydrogen Evolution

Nitrogen‐Doped Carbon‐Coated CuO‐In2O3 p–n Heterojunction for Remarkable Photocatalytic Hydrogen Evolution

Contact Info

Product

Resources

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Lithium Photo‐intercalation of CdS‐Sensitized WO₃ Anode for Energy Storage and Photoelectrochromic Applications

Lithium Photo‐intercalation of CdS‐Sensitized WO₃ Anode for Energy Storage and Photoelectrochromic Applications

MoP₄ Nanoparticles as a Novel and Efficient Cocatalyst for Enhanced Photocatalytic Hydrogen Evolution

Nitrogen‐Doped Carbon‐Coated CuO‐In₂O₃ p–n Heterojunction for Remarkable Photocatalytic Hydrogen Evolution