3D layered nano-flower MoSx anchored with CoP nanoparticles form double proton adsorption site for enhanced photocatalytic hydrogen evolution under visible light driven

Yan, Xian; Wang, Guorong; Zhang, Yupeng; Guo, Qi; Jin, Zhiliang

doi:10.1016/j.ijhydene.2019.11.227

Cited by 49 publications

(16 citation statements)

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“…Then, EY 1* formed triplet excited state (EY 3* ) under the intersystem transition and took away the electrons in TEOA to reduce and quench EY 3* , generating free radicals (EY − ) and TEOA + with reducing ability and oxidation state [46,47] . Next, part of the electrons on the free radicals (EY − ) were transferred to the active site of MoS 2 −P, and the remaining electrons were transferred to the conduction band of NiTiO 3 and then transferred to the conduction band of MoS 2 −P through the energy level difference between NiTiO 3 and MoS 2 −P [48,49] . Eventually, the electrons gather on the active surface of MoS 2 −P to form a high electron density area, increase the adsorption of H + and combine with electrons to form H 2 .…”

Section: Resultsmentioning

confidence: 99%

Phosphated 2D MoS₂ nanosheets and 3D NiTiO₃ nanorods for efficient photocatalytic hydrogen evolution

Wang

Gong

et al. 2020

ChemCatChem

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An efficient and stable NiTiO3/MoS2−P photocatalyst was prepared with means of hydrothermal and calcination. After optimization, the maximum hydrogen production of the composite sample reached 337.82 μmol in 5 h. After phosphating NiTiO3 nanorods and MoS2, the original structure of 3D nanorods and 2D nanosheets was maintained, which forms a tight interface between the two materials. In addition, the heterojunction established in the NiTiO3/MoS2−P composite material resulted in good separation of electrons and holes, thereby improving the photocatalytic efficiency under light conditions. Efficient charge transfer efficiency was also confirmed in photoelectrochemical experiments. Furthermore, photoluminescence spectroscopy experiments have confirmed that the formation of heterojunction between the two semiconductors increases the carrier lifetime of the composite catalyst and has efficient separation efficiency. SEM, TEM, BET, UV‐vis DRS and other series of characterization methods were used to characterize the prepared materials.

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Section: Resultsmentioning

confidence: 99%

Phosphated 2D MoS₂ nanosheets and 3D NiTiO₃ nanorods for efficient photocatalytic hydrogen evolution

Wang

Gong

et al. 2020

ChemCatChem

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“…It is worth noting that in photocatalytic reactions, most TMPs, acting as co‐catalysts, provide a considerable number of active sites and accept photoinduced electrons from semiconductor materials. However, some TMPs can also serve as host catalysts, such as Cu 3 P, [19,138–140] CoP, [22] and Ni 2 P, [23,141] which can combine with a variety of catalysts to form a type‐II or Z‐scheme heterojunction. In Cu 3 P/g‐C 3 N 4 composite photocatalysis, when the weight percentage reached 10, Cu 3 P nanoparticles served as host catalyst and combined with g‐C 3 N 4 to form a p–n junction, while the low‐content Cu 3 P (1.5 wt%) played the role of co‐catalyst to undertake the task of electron transport and providing active sites [142] .…”

Section: Application Of Tmps In Photocatalytic H2 Evolutionmentioning

confidence: 99%

“…Furthermore, the metal‐P bond formed between TMPs and other semiconductors can be used as electron channel to accelerate charge transfer, which is conducive to boost photocatalytic activity. For instance, the band between P atom and Co atom provided a channel for electron transfer, which could reduce the recombination rate and facilitate the photocatalytic efficiency of MoS x /CoP hybrids [22] …”

Section: Application Of Tmps In Photocatalytic H2 Evolutionmentioning

confidence: 99%

“…For instance, the band between P atom and Co atom provided a channel for electron transfer, which could reduce the recombination rate and facilitate the photocatalytic efficiency of MoS x /CoP hybrids. [22] Undoubtedly, suitable CB and VB positions and bandgap width are basis conditions for Cu 3 P to serve as an efficient photocatalyst, and the CB and VB of Cu 3 P are À 0.60 and 0.72 eV, respectively. [138] Easy access and cheap prices are also responsible for the widespread attention of Cu 3 P since it was first reported as a catalyst for photocatalytic H 2 production in 2015.…”

Section: Tmps As Host Photocatalystsmentioning

confidence: 99%

“…At the same time, the activity of TMPdecorated photocatalyst and the roles of TMPs are systematically researched. Remarkably, some TMPs, like Cu 3 P, [18,21] CoP, [22] and Ni 2 P, [23] can also act as primary catalysts to provide abundant photo-induced electrons for proton reduction. Several existing shortcomings and future development direction of TMPs are proposed at the end of this Review.…”

Section: Introductionmentioning

confidence: 99%

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Recent Progress of Transition Metal Phosphides for Photocatalytic Hydrogen Evolution

et al. 2020

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Photocatalytic hydrogen evolution can effectively alleviate the troublesome global energy crisis by converting solar energy into the chemical energy of hydrogen. In order to realize efficient hydrogen generation, a variety of semiconductor materials have been extensively investigated, including TiO2, CdS, g‐C3N4, metal‐organic frameworks (MOFs), and others. In recent years, to achieve higher photocatalytic performance and reach the level of large‐scale industrial applications, photocatalysts decorated with transition metal phosphides (TMPs) have shone brightly because of their low cost, stable physical and chemical properties, and substitution for precious metals of TMPs. This Review highlights the preparation methods and properties associated with photocatalysis of TMPs. Moreover, the H2 generation efficiency of photocatalysts loaded with TMPs and the roles of TMPs in catalytic systems are also studied systematically. Apart from being co‐catalysts, several TMPs can also serve as host catalysts to boost the activity of photocatalytic composites. Finally, the development prospects and challenges of TMPs are put forward, which is valuable for future researchers to expand the application of TMPs in photocatalytic directions and to develop more active photocatalytic systems.

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NiAl‐LDH In‐Situ Derived Ni₂P and ZnCdS Nanoparticles Ingeniously Constructed S‐Scheme Heterojunction for Photocatalytic Hydrogen Evolution

Zhang

et al. 2022

ChemCatChem

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Surface modification of photocatalytic materials is a good choice for improving semiconductor activity. Simple surface modification strategy and abundant active site construction are the key factors to improve photocatalytic activity. Take NiAl-LDH as the matrix, perform partial phosphating, and use the spatial confinement effect to generate highly dispersed Ni 2 P. Ni 2 P does not exist independently but on the 3D NiAl-LDH's surface. The introduction of NiAl-LDH-P can improve the utilization of Zn 0.5 Cd 0.5 S on solar energy and speed up the transfer rate of photogenerated carriers. Ni 2 P makes the active sites of phosphide more abundant, and the unique electron distribution of phosphide is conducive to photon capture, thus accelerating the hydrogen precipitation rate in the composite photocatalyst. Partial phosphating retains the 3D framework of hydrotalcite. The well-dispersed 0D to 3D S-scheme heterojunction hybrid material is composed of three-dimensional nano-flowers and tiny nano-particles alternately formed by countless nano-sheets. The multi-dimensional structured composite photocatalyst has abundant active sites, large specific surface area, and strong proton adsorption capacity, thus exhibiting more excellent photocatalytic hydrogen evolution performance. The maximum hydrogen production of the composite photocatalyst under 5 W LED simulated visible light for 5 h can reach 1982.43 μmol (39.64 mmol g À 1 h À 1 ) and the apparent quantum efficiency reached 6.22 % at 475 nm. The construction of the Zn 0.5 Cd 0.5 S/NiAl-LDH-P S-scheme heterojunction changes the hydrogen evolution site from Zn 0.5 Cd 0.5 S to Ni 2 P, so that the conduction band position of the composite photocatalyst becomes higher, the reduction ability is enhanced, and the hydrogen evolution The site changed from Zn 0.5 Cd 0.5 S to Ni 2 P, which is more conducive to the generation of hydrogen, thereby improving the activity and stability of hydrogen production. The space design of 0D and 3D provides new thinking for the design of the closely contacted S-scheme heterojunction photocatalytic. The application of surface modification strategies and the construction of abundant active sites point out the direction for further improving the composite photocatalytic activity.

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3D layered nano-flower MoSx anchored with CoP nanoparticles form double proton adsorption site for enhanced photocatalytic hydrogen evolution under visible light driven

Cited by 49 publications

References 55 publications

Phosphated 2D MoS₂ nanosheets and 3D NiTiO₃ nanorods for efficient photocatalytic hydrogen evolution

Phosphated 2D MoS₂ nanosheets and 3D NiTiO₃ nanorods for efficient photocatalytic hydrogen evolution

Recent Progress of Transition Metal Phosphides for Photocatalytic Hydrogen Evolution

NiAl‐LDH In‐Situ Derived Ni₂P and ZnCdS Nanoparticles Ingeniously Constructed S‐Scheme Heterojunction for Photocatalytic Hydrogen Evolution

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3D layered nano-flower MoSx anchored with CoP nanoparticles form double proton adsorption site for enhanced photocatalytic hydrogen evolution under visible light driven

Cited by 49 publications

References 55 publications

Phosphated 2D MoS2 nanosheets and 3D NiTiO3 nanorods for efficient photocatalytic hydrogen evolution

Phosphated 2D MoS2 nanosheets and 3D NiTiO3 nanorods for efficient photocatalytic hydrogen evolution

Recent Progress of Transition Metal Phosphides for Photocatalytic Hydrogen Evolution

NiAl‐LDH In‐Situ Derived Ni2P and ZnCdS Nanoparticles Ingeniously Constructed S‐Scheme Heterojunction for Photocatalytic Hydrogen Evolution

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Phosphated 2D MoS₂ nanosheets and 3D NiTiO₃ nanorods for efficient photocatalytic hydrogen evolution

Phosphated 2D MoS₂ nanosheets and 3D NiTiO₃ nanorods for efficient photocatalytic hydrogen evolution

NiAl‐LDH In‐Situ Derived Ni₂P and ZnCdS Nanoparticles Ingeniously Constructed S‐Scheme Heterojunction for Photocatalytic Hydrogen Evolution