Anchoring Ni single atoms on sulfur-vacancy-enriched ZnIn2S4 nanosheets for boosting photocatalytic hydrogen evolution

Pan, Jingwen; Gong-xin, Zhang; Guan, Zhongjie; Zhao, Qianyu; Li, Guoqiang; Yang, Jianjun; Li, Qiuye; Zou, Zhigang

doi:10.1016/j.jechem.2020.10.030

Cited by 123 publications

(65 citation statements)

References 37 publications

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“…[1][2][3] Adhering to the path of sustainable development is today's main development concept, so solar energy and hydrogen energy are environmentally friendly energy sources that meet future development needs. [4][5][6] Since the life of the sun is much longer than that of the earth, solar energy is an inexhaustible energy source for us, so the photocatalytic technology to convert it into hydrogen energy has huge potential in the future. All the time, researchers have been trying to find a photocatalyst that can make the photocatalytic reaction faster, more efficient, and cheaper to produce hydrogen.…”

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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“…The two peaks of binding energy at 452.5 eV and 444.9 eV correspond to In 3d 3/2 and In 3d 5/2 , respectively (Figure 5e) [57]. The Zn 2p XPS spectrum shows the binding energies of Zn 2p 1/2 at 1044.7 eV and Zn 2p 3/2 at 1021.6 eV (Figure 5f) [58]. By comparison, it was found that the characteristic peak areas of the S 2p, In 3d and Zn 2p spectra of pCN-N/ZIS-Z were significantly reduced compared to ZIS and ZIS-Z.…”

Section: Photocatalyst Characterizationmentioning

confidence: 95%

Flower-Like Dual-Defective Z-Scheme Heterojunction g-C3N4/ZnIn2S4 High-Efficiency Photocatalytic Hydrogen Evolution and Degradation of Mixed Pollutants

Hou

Jin

et al. 2021

Nanomaterials

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Graphitic carbon nitride (g-C3N4) with a porous nano-structure, nitrogen vacancies, and oxygen-doping was prepared by the calcination method. Then, it was combined with ZnIn2S4 nanosheets containing zinc vacancies to construct a three-dimensional (3D) flower-like Z-scheme heterojunction (pCN-N/ZIS-Z), which was used for photocatalytic hydrogen evolution and the degradation of mixed pollutants. The constructed Z-scheme heterojunction improved the efficiency of photogenerated charges separation and migration, and the large surface area and porous characteristics provided more active sites. Doping and defect engineering can change the bandgap structure to improve the utilization of visible light, and can also capture photogenerated electrons to inhibit recombination, so as to promote the use of photogenerated electron-hole pairs in the photocatalytic redox process. Heterojunction and defect engineering synergized to form a continuous and efficient conductive operation framework, which achieves the hydrogen production of pCN-N/ZIS-Z (9189.8 µmol·h−1·g−1) at 58.9 times that of g-C3N4 (155.9 µmol·h−1·g−1), and the degradation rates of methyl orange and metronidazole in the mixed solution were 98.7% and 92.5%, respectively. Our research provides potential ideas for constructing a green and environmentally friendly Z-scheme heterojunction catalyst based on defect engineering to address the energy crisis and environmental restoration.

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“…Detect the photogenerated carrier dynamics conditions of the sample by transient fluorescence. [36] Figure 6b shows the instantaneous fluorescence spectrum. Fit the corresponding time-resolved photoluminescence (TRPL) by using a three-exponential decay model.…”

Section: Pl Analysismentioning

confidence: 99%

CdS Reinforced with CoS_X/NiCo‐LDH Core‐shell Co‐catalyst Demonstrate High Photocatalytic Hydrogen Evolution and Durability in Anhydrous Ethanol

Quan

Wang

et al. 2021

Chemistry A European J

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At present, inefficient charge separation of single photocatalyst impedes the development of photocatalytic hydrogen evolution. In this work, the CoS X /NiCo-LDH coreshell co-catalyst was cleverly designed, which exhibit high activity and high stability of hydrogen evolution in anhydrous ethanol system when coupled with CdS. Under visible light (λ � 420 nm) irradiation, the 3 %Co/NiCo/CdS composite photocatalyst exhibits a surprisingly high photocatalytic hydrogen evolution rate of 20.67 mmol g À 1 h À 1 , which is 59 times than that of the original CdS. Continuous light for 20 h still showed good cycle stability. In addition, the 3 %Co/NiCo/CdS composite catalyst also shows good hydrogen evolution performance under the Na 2 S/Na 2 SO 3 and lactic acid system. The fluorescence (PL), ultraviolet-visible diffuse reflectance (UV-vis) and photoelectrochemical tests show that the coupling of CdS and CoS X /NiCo-LDH not only accelerates the effective transfer of charges, but also greatly increases the absorption range of CdS to visible light. Therefore, the hydrogen evolution activity of the composite photocatalyst has been significantly improved. This work will provide new insights for the construction of new co-catalysts and the development of composite catalysts for hydrogen evolution in multiple systems.

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Anchoring Ni single atoms on sulfur-vacancy-enriched ZnIn2S4 nanosheets for boosting photocatalytic hydrogen evolution

Cited by 123 publications

References 37 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

Flower-Like Dual-Defective Z-Scheme Heterojunction g-C3N4/ZnIn2S4 High-Efficiency Photocatalytic Hydrogen Evolution and Degradation of Mixed Pollutants

CdS Reinforced with CoS_X/NiCo‐LDH Core‐shell Co‐catalyst Demonstrate High Photocatalytic Hydrogen Evolution and Durability in Anhydrous Ethanol

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Anchoring Ni single atoms on sulfur-vacancy-enriched ZnIn2S4 nanosheets for boosting photocatalytic hydrogen evolution

Cited by 123 publications

References 37 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

Flower-Like Dual-Defective Z-Scheme Heterojunction g-C3N4/ZnIn2S4 High-Efficiency Photocatalytic Hydrogen Evolution and Degradation of Mixed Pollutants

CdS Reinforced with CoSX/NiCo‐LDH Core‐shell Co‐catalyst Demonstrate High Photocatalytic Hydrogen Evolution and Durability in Anhydrous Ethanol

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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

CdS Reinforced with CoS_X/NiCo‐LDH Core‐shell Co‐catalyst Demonstrate High Photocatalytic Hydrogen Evolution and Durability in Anhydrous Ethanol