Effect of phosphating on NiAl-LDH layered double hydroxide form S-scheme heterojunction for photocatalytic hydrogen evolution

Li, Dujuan; Ma, Xiuli; Su, Peng; Yang, Shengjiang; Jiang, Zhibo; Li, Youji; Jin, Zhiliang

doi:10.1016/j.mcat.2021.111990

Cited by 43 publications

(45 citation statements)

References 44 publications

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“…The structure of LDH is layered, and M 2 + and M 3 + are distributed in the hydrogen and oxygen layer in a highly ordered manner. [26,27] In order to improve the defects of Zn 0.5 Cd 0.5 S, we combined Zn0.5Cd0.5S and Ni 2 P in NiAl-LDH through catalyst deposition to construct an S-scheme heterojunction, which makes the conduction band position higher, and the hydrogen evolution ability is strengthened. The hydrogen production efficiency of the catalyst is improved.…”

Section: Introductionmentioning

confidence: 99%

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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Section: Introductionmentioning

confidence: 99%

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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“…Using clean energy to replace traditional fossil fuel is an effective solution to the energy problem. [1][2][3][4] Photocatalytic H 2 evolution reaction can not only use the inexhaustible solar energy, but also produce clean hydrogen energy. [5][6][7][8] TiO 2 , [9,10] ZnCdS, [11,12] MnCdS [13] and g-C 3 N 4 [14] photocatalysts have been reported.…”

Section: Introductionmentioning

confidence: 99%

Mo−N Bonds Effect Between MoS_x Coupling With CoN For Efficient Photocatalytic Hydrogen Production

Liu

Zhang

et al. 2022

ChemCatChem

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The facet‐engineered surface and interface design has attracted much attention in the preparation of efficient photocatalysts. Polyvinylpyrrolidone (PVP) is used as the morphological modifier to prepare 3D MoSx in this work. Benefit by its suitable conduction band position and good conductivity, CoN accepts photo‐induced electrons from MoSx as an excellent electron acceptor in the form of active sites. With the addition of CoN, hydrogen evolution performance of MoSx has been greatly improved by building the Mo−N bond since the form of Mo−N bond successfully shorten electron transport routes. The reason for the improved hydrogen precipitation efficiency is demonstrated by PL, XPS, and electrochemical characterization. The H2 production activity of MoSx@CoN with the best mass ratio of MoSx to CoN is up to 7617.5 μmol/g/h, and the hydrogen production stability of MoSx@CoN is also considerable. These findings provide new insights for the preparation of highly efficient photocatalytic hydrogen evolution materials.

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“…50 The band gap (E g ) of CuI and CPO were estimated by formula 1. 51,52 As shown in Figure 6c,d, the E g values of CPO and CuI are 2.11 and 2.93 eV, respectively. According to the previous literature, the band gap value of GD is 1.09 eV.…”

Section: Resultsmentioning

confidence: 93%

“…The semiconductor material absorbs more photons to generate more photogenerated electron–hole pairs, thereby effectively improving its photocatalytic performance . The band gap ( E g ) of CuI and CPO were estimated by formula . , As shown in Figure c,d, the E g values of CPO and CuI are 2.11 and 2.93 eV, respectively. According to the previous literature, the band gap value of GD is 1.09 eV …”

Section: Resultsmentioning

confidence: 99%

Hierarchical Co₃(PO₄)₂/CuI/g-C_nH_2n–2 S-Scheme Heterojunction for Efficient Photocatalytic Hydrogen Evolution

Liu

Jin

2021

Inorg. Chem.

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Graphdiyne (GD), a new type of carbon allotrope formed by sp and sp 2 hybrid carbon atoms, has attracted wide attention due to its high π-conjugation degree, special band structure, and uniformly distributed pores. In traditional synthesis methods, hexaethylbenzene was coupled on the substrate catalytic material (copper foil or foamed copper) to generate graphdiyne. In this work, CuI was used as the substrate catalytic material, and the CuI-GD composite was synthesized by cross-coupling in the pyridine solution of hexaethylbenzene. For the first time, Co 3 (PO 4 ) 2 was modified by the CuI-GD composite material to prepare a Co 3 (PO 4 ) 2 /CuI-GD S-scheme heterojunction catalyst, which avoided the complicated process of removing the substrate catalytic material. Under the action of the internal electric field, electrons are induced to move quickly and directionally, and the powerful photogenerated electrons in the conduction band (CB) of GD and the holes in the valence band (VB) of CuI are retained to participate in the photocatalytic reaction. These advantages were combined with the high-energy acetylene bond in GD, which accelerated the catalytic reaction of the Co 3 (PO 4 ) 2 /CuI-GD heterostructure. Electrochemical and fluorescence analysis showed that Co 3 (PO 4 ) 2 / CuI-GD has faster electron and hole separation efficiency, lower hydrogen evolution overpotential, and higher carrier utilization. Therefore, Co 3 (PO 4 ) 2 /CuI-GD exhibited good hydrogen evolution activity. This work shows that GD has broad prospects in designing high-performance photocatalyst systems.

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Effect of phosphating on NiAl-LDH layered double hydroxide form S-scheme heterojunction for photocatalytic hydrogen evolution

Cited by 43 publications

References 44 publications

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

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

Mo−N Bonds Effect Between MoS_x Coupling With CoN For Efficient Photocatalytic Hydrogen Production

Hierarchical Co₃(PO₄)₂/CuI/g-C_nH_2n–2 S-Scheme Heterojunction for Efficient Photocatalytic Hydrogen Evolution

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Effect of phosphating on NiAl-LDH layered double hydroxide form S-scheme heterojunction for photocatalytic hydrogen evolution

Cited by 43 publications

References 44 publications

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

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

Mo−N Bonds Effect Between MoSx Coupling With CoN For Efficient Photocatalytic Hydrogen Production

Hierarchical Co3(PO4)2/CuI/g-CnH2n–2 S-Scheme Heterojunction for Efficient Photocatalytic Hydrogen Evolution

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

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

Mo−N Bonds Effect Between MoS_x Coupling With CoN For Efficient Photocatalytic Hydrogen Production

Hierarchical Co₃(PO₄)₂/CuI/g-C_nH_2n–2 S-Scheme Heterojunction for Efficient Photocatalytic Hydrogen Evolution