Molybdenum sulfide cocatalyst activation upon photodeposition of cobalt for improved photocatalytic hydrogen production activity of ZnCdS

Lei, Yonggang; Zhang, Yingzhen; Li, Zengxing; Xu, Shen; Huang, Jianying; Ng, Kim Hoong; Lai, Yuekun

doi:10.1016/j.cej.2021.131478

Cited by 75 publications

(26 citation statements)

References 64 publications

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“…Therefore, noble metals, such as Pt [ 181 , 182 , 183 , 184 ] and Rh [ 104 , 185 ], for which the H 2 adsorption free energy (∆G H* ) is near 0, are often used as elements in HER cocatalysts. Recently, HER cocatalysts without precious metal elements (such as MoS 2 [ 186 , 187 , 188 , 189 ], NiS [ 41 , 190 , 191 , 192 , 193 , 194 , 195 ], CoMoS [ 196 , 197 , 198 , 199 ], Ni 2 P [ 200 , 201 , 202 , 203 , 204 ], and FeP [ 205 , 206 , 207 ]) have also been developed. Meanwhile, metal oxides (sulfides), such as CoO x [ 208 , 209 , 210 ], RuO 2 [ 211 , 212 , 213 ], IrO 2 [ 120 , 214 ], and PdS [ 215 , 216 ], are often used as OER cocatalysts, based on the volcano plot shown in Figure 16 B [ 217 ].…”

Section: Control Of Cocatalystsmentioning

confidence: 99%

Development and Functionalization of Visible-Light-Driven Water-Splitting Photocatalysts

et al. 2022

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With global warming and the depletion of fossil resources, our fossil fuel-dependent society is expected to shift to one that instead uses hydrogen (H2) as a clean and renewable energy. To realize this, the photocatalytic water-splitting reaction, which produces H2 from water and solar energy through photocatalysis, has attracted much attention. However, for practical use, the functionality of water-splitting photocatalysts must be further improved to efficiently absorb visible (Vis) light, which accounts for the majority of sunlight. Considering the mechanism of water-splitting photocatalysis, researchers in the various fields must be employed in this type of study to achieve this. However, for researchers in fields other than catalytic chemistry, ceramic (semiconductor) materials chemistry, and electrochemistry to participate in this field, new reviews that summarize previous reports on water-splitting photocatalysis seem to be needed. Therefore, in this review, we summarize recent studies on the development and functionalization of Vis-light-driven water-splitting photocatalysts. Through this summary, we aim to share current technology and future challenges with readers in the various fields and help expedite the practical application of Vis-light-driven water-splitting photocatalysts.

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Section: Control Of Cocatalystsmentioning

confidence: 99%

Development and Functionalization of Visible-Light-Driven Water-Splitting Photocatalysts

et al. 2022

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“…In addition, the yellow line marks the lattice fringes corresponding to the (111) crystal plane of Zn x Cd 1– x S, and the lattice spacing is measured as 0.32 nm. While CoV-LDH and Zn x Cd 1– x S are intimately contacted, the interfacial charge transport can be effectively enhanced, thereby alleviating the recombination of photogenerated carriers during a photocatalytic reaction Figure F is the energy-dispersive X-ray spectrum (EDX) of the composite catalyst CoV-LDH/Zn x Cd 1– x S 20%.…”

Section: Resultsmentioning

confidence: 99%

“…While CoV-LDH and Zn x Cd 1−x S are intimately contacted, the interfacial charge transport can be effectively enhanced, thereby alleviating the recombination of photogenerated carriers during a photocatalytic reaction. 33 Figure 3F is the energy-dispersive X-ray 20 In Figure 4C, Cd 3d has two significant peaks at 404.6 and 411.35 eV, which are attributed to the binding energies of Cd 3d 5/2 and Cd 2p 1/2 , respectively. 35 In Figure 4D, the S element can fit two peaks, and its binding energy corresponds to S 2p 3/2 (160.9 eV) and S 2p 1/2 (162.05 eV), respectively.…”

Section: Synthesis Of Cov-ldh/znmentioning

confidence: 99%

CoV-LDH and Zn_xCd_1–xS Solid-Solution Construct 0D/3D S-Scheme Heterojunction for Activated Solar Hydrogen Evolution

Guo

Chang

Wang

et al. 2022

ACS Appl. Energy Mater.

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The development of low-cost and high-activity catalysts is one of the most important aspects of photocatalytic water splitting. Here, three-dimensional (3D) CoV-LDH and zero-dimensional (0D) Zn x Cd1–x S solid solutions were effectively assembled to synthesize an efficient and stable S-scheme heterojunction photocatalyst. The hydrogen production of CoV-LDH/Zn x Cd1–x S under 5 W simulated sunlight reached 921.9 μmol (18.438 mmol h–1 g–1) in 5 h, which was 30.8 times and 223.5 times higher than those of pure Zn x Cd1–x S photocatalyst and pure CoV-LDH photocatalyst, respectively. This is because the introduction of CoV-LDH strengthens the absorption of light, and the 0D/3D interface contact can effectively promote the transfer of photogenerated charges between semiconductors and improve the surface shuttle performance to achieve efficient H2 production. The staggered band structure makes the electron flow between CoV-LDH and Zn x Cd1–x S follow a step scheme. The construction of the CoV-LDH/Zn x Cd1–x S S-scheme heterojunction retains a high redox potential and extends the life of the electron-generated carriers. This work may afford an approach for constructing high-efficiency S-scheme heterojunctions and modifying photocatalysts in future applications.

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“…The binding energy for the Mo3d5/2 peak was 228.96 eV. The Mo 5+ state may arise due to the formation of Mo-S-O clusters [52,53]. The appearance of such Mo states is also possible during the chain packing of -Mo-3S-Mo-atoms in the amorphous structure of MoS3 [54].…”

Section: The Composition and Structure Of Mosmentioning

confidence: 98%

Pulsed Laser Phosphorus Doping and Nanocomposite Catalysts Deposition in Forming a-MoSx/NP-Mo//n+p-Si Photocathodes for Efficient Solar Hydrogen Production

et al. 2022

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Pulsed laser deposition of nanostructured molybdenum sulfide films creates specific nonequilibrium growth conditions, which improve the electrocatalytic properties of the films in a hydrogen evolution reaction (HER). The enhanced catalytic performance of the amorphous a-MoSx (2 ≤ x ≤ 3) matrix is due to the synergistic effect of the Mo nanoparticles (Mo-NP) formed during the laser ablation of a MoS2 target. This work looks at the possibility of employing a-MoSx/NP-Mo films (4 and 20 nm thickness) to produce hydrogen by photo-stimulated HER using a p-Si cathode. A simple technique of pulsed laser p-Si doping with phosphorus was used to form an n+p-junction. Investigations of the energy band arrangement at the interface between a-MoSx/NP-Mo and n+-Si showed that the photo-HER on an a-MoSx/NP-Mo//n+p-Si photocathode with a 20 nm thick catalytic film proceeded according to a Z-scheme. The thickness of interfacial SiOy(P) nanolayer varied little in photo-HER without interfering with the effective electric current across the interface. The a-MoSx/NP-Mo//n+p-Si photocathode showed good long-term durability; its onset potential was 390 mV and photocurrent density was at 0 V was 28.7 mA/cm2. The a-MoSx/NP-Mo//n+p-Si photocathodes and their laser-based production technique offer a promising pathway toward sustainable solar hydrogen production.

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Molybdenum sulfide cocatalyst activation upon photodeposition of cobalt for improved photocatalytic hydrogen production activity of ZnCdS

Cited by 75 publications

References 64 publications

Development and Functionalization of Visible-Light-Driven Water-Splitting Photocatalysts

Development and Functionalization of Visible-Light-Driven Water-Splitting Photocatalysts

CoV-LDH and Zn_xCd_1–xS Solid-Solution Construct 0D/3D S-Scheme Heterojunction for Activated Solar Hydrogen Evolution

Pulsed Laser Phosphorus Doping and Nanocomposite Catalysts Deposition in Forming a-MoSx/NP-Mo//n+p-Si Photocathodes for Efficient Solar Hydrogen Production

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Molybdenum sulfide cocatalyst activation upon photodeposition of cobalt for improved photocatalytic hydrogen production activity of ZnCdS

Cited by 75 publications

References 64 publications

Development and Functionalization of Visible-Light-Driven Water-Splitting Photocatalysts

Development and Functionalization of Visible-Light-Driven Water-Splitting Photocatalysts

CoV-LDH and ZnxCd1–xS Solid-Solution Construct 0D/3D S-Scheme Heterojunction for Activated Solar Hydrogen Evolution

Pulsed Laser Phosphorus Doping and Nanocomposite Catalysts Deposition in Forming a-MoSx/NP-Mo//n+p-Si Photocathodes for Efficient Solar Hydrogen Production

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CoV-LDH and Zn_xCd_1–xS Solid-Solution Construct 0D/3D S-Scheme Heterojunction for Activated Solar Hydrogen Evolution