Ultrathin ZIS nanosheets encapsulated in metal–organic-framework-derived CNCo-Fe<sub>3</sub>O<sub>4</sub> as an efficient functional photocatalyst for hydrogen evolution

Luo, Huihua; Yu, Lianqing; Xue, Kehui; Hong, Zhu; Zhang, Yaping

doi:10.1039/d2ta06818d

Cited by 19 publications

(4 citation statements)

References 48 publications

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“…The other peaks that appear at 72.6 and 73.4 eV can be attributed to oxidized bromine . The peaks at 531.9 and 533.4 eV in Figure g can be attributed to lattice oxygen (O L ) and adsorbed oxygen (O abs ), respectively . In the Zn 2p XPS spectrum of the MCS@ZIF-8-MB heterojunction catalyst (Figure h), the two peaks at 1021.3 and 1044.6 eV are attributed to Zn 2p 3/2 and Zn 2p 1/2 , respectively .…”

Section: Resultsmentioning

confidence: 97%

“…34 The peaks at 531.9 and 533.4 eV in Figure 3g can be attributed to lattice oxygen (O L ) and adsorbed oxygen (O abs ), respectively. 35 In the Zn 2p XPS spectrum of the MCS@ZIF-8-MB heterojunction catalyst (Figure 3h), the two peaks at 1021.3 and 1044.6 eV are attributed to Zn 2p 3/2 and Zn 2p 1/2 , respectively. 26 Because of the coincidence of N and Cd XPS spectra, making qualitative judgments is difficult.…”

Section: Microstructure and Chemical Compositionmentioning

confidence: 99%

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Highly Water-Stable and Efficient Hydrogen-Producing Heterostructure Synthesized from Mn_0.5Cd_0.5S and a Zeolitic Imidazolate Framework ZIF-8 via Ligand and Cation Exchange

Ding

Hong

Zhou

et al. 2023

ACS Appl. Mater. Interfaces

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Developing highly water-stable zeolitic imidazolate frameworks (ZIFs) for visible-light-driven photocatalytic hydrolysis is important and challenging. Herein, the Type II heterojunction catalyst Mn0.5Cd0.5S@ZIF-8 and its derivatives (including MCS@ZIF-8-Mn, MCS@ZIF-8-Br, and MCS@ZIF-8-MB) were successfully constructed using a facile strategy. Through dual postsynthetic ligand and cation exchange (PSE) treatments of Mn(Ac)2·4H2O and 4-bromo-1H-imidazole for ZIF-8, the hydrogen production efficiency of the MCS@ZIF-8-MB heterojunction catalyst can reach 5.450 mmol·g–1·h–1 and remain at 97.11% after 9 h of the stability test. Construction of heterojunctions can effectively improve the hydrogen production performance of Mn0.5Cd0.5S while maintaining excellent water stability. X-ray photoelectron spectroscopy results show that upon successful construction of the MCS@ZIF-8-MB heterojunction an interface forms between the surface of MCS and ZIF-8-MB, effectively weakening the photocorrosion of MCS. Density functional theory calculations also indicate that the induction of Mn can increase the electronic states of p and d orbitals near the Fermi level of ZIF-8, suggesting that Mn(II) attracts more electrons than Zn(II). This provides more powerful theoretical evidence for the electron cloud shift from the electron donor S2– to Mn2+.

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Section: Resultsmentioning

confidence: 97%

Section: Microstructure and Chemical Compositionmentioning

confidence: 99%

Highly Water-Stable and Efficient Hydrogen-Producing Heterostructure Synthesized from Mn_0.5Cd_0.5S and a Zeolitic Imidazolate Framework ZIF-8 via Ligand and Cation Exchange

Ding

Hong

Zhou

et al. 2023

ACS Appl. Mater. Interfaces

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“…These peaks correspond to the Zn 2+ species . Additionally, In 3d high-resolution XPS also exhibits two symmetrical peaks (Figure c), where chemical BE peaks near 452.78 and 445.23 eV are attributed to In 3+ species in the ZIS/ZnS . The XPS peaks of S 2p, Zn 2p, and In 3d on ZIS/ZnS exhibit shifts compared to those on ZIS and ZnS.…”

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confidence: 93%

Designing Surface-Defect Engineering to Enhance the Solar-Driven Conversion of CO₂ to C₂ Products over Zn₃In₂S₆/ZnS

Liu,

Fan,

et al. 2023

J. Phys. Chem. Lett.

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The manipulation of electronic structure and prevention of photogenerated carriers from being quenched in bulk defects during the photocatalytic CO2 reduction reaction (CRR) have been effectively demonstrated through surface vacancy and defect engineering. In this work, the electronic structure on the surface of Zn3In2S6/ZnS (ZIS/ZnS) is significantly modified by the introduction and control of the surface S vacancies (SV) through Ar-plasma treatment. EPR and XPS analyses confirmed that SV was exclusively present on the ZIS/ZnS surface. The resulting ZIS/ZnS heterojunction photocatalysts demonstrate an impressive 46.6% selectivity toward C2 products even in the absence of cocatalysts. The mechanism of photocatalytic CRR is further elucidated through in situ analysis. Theoretical calculations demonstrate that the presence of In and Zn atoms adjacent to SV significantly enhances the adsorption of CO2 and facilitates C–C coupling.

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“…For example, the faster-photogenerated electron and hole complexation rates reduce the efficiency of photocatalysis, which in turn limits the practical applications of photocatalysis. [4,5] For this reason, numerous modification strategies including metal or nonmetal doping, [6,7] loading cocatalysts, [8] and construction of heterostructures [9,10] have been explored to improve photocatalytic efficiency, but there is still a huge potential for the development of lowering the carrier complexation rate in photocatalysis. Therefore, it is necessary to develop new methods to improve photocatalytic performance.SrTiO 3 is a perovskite oxide, which has a suitable band structure, high stability, superb electronic and optical performance, low toxicity, and inexpensive.…”

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Oxygen Vacancies‐Induced Dendritic SrTiO₃/CdS p–n Heterostructures Photocatalyst for Ultrahigh Hydrogen Evolution

Yu,

Li,

Duan

et al. 2023

Solar RRL

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Generally, hydrogen is regarded as one of the cleanest green energy sources, which can replace fossil fuels in the future due to its efficient energy release and zero-emission characteristics. [1] Photocatalytic water splitting is a promising method of hydrogen energy production. [2] As one of the most important solar technologies, semiconductor photocatalytic hydrogen production has attracted the attention of many researchers because of its environmental friendliness, stability, and economy. [3] Photosynthesis of natural plants can convert solar energy into other biological energy. The large specific surface area of the branches facilitates adequate photosynthesis, while it also requires the outside world to provide the necessary raw materials, such as dewdrops that can provide water for plants. However, there are still many challenges in the actual photocatalytic process. For example, the faster-photogenerated electron and hole complexation rates reduce the efficiency of photocatalysis, which in turn limits the practical applications of photocatalysis. [4,5] For this reason, numerous modification strategies including metal or nonmetal doping, [6,7] loading cocatalysts, [8] and construction of heterostructures [9,10] have been explored to improve photocatalytic efficiency, but there is still a huge potential for the development of lowering the carrier complexation rate in photocatalysis. Therefore, it is necessary to develop new methods to improve photocatalytic performance.SrTiO 3 is a perovskite oxide, which has a suitable band structure, high stability, superb electronic and optical performance, low toxicity, and inexpensive. [11,12] However, the broadband gap (%3.2 eV) of SrTiO 3 allows to make it merely absorb UV light, and the fast recombination of photo-generated charges carriers leads to a low usage rate of solar energy. [13] Oxygen vacancies can avoid the rapid recombination of photogenerated carriers and provide trapping sites at the same time. [14] Noticeably, oxygen vacancies can not only build a surface energy state but also expand the light absorbance to lower energy wavelengths. [15] Zhou [16] et al. found that hydrogen-treated SrTiO 3 can produce H 2 under UV light in absence of cocatalyst, due to the formation of appropriate oxygen vacancies by synergistic interaction of hydroxylation. Tan [17] et al. prepared surface oxygen vacancies on SrTiO 3 by the reaction with NaBH 4 . However, the practical application of SrTiO 3 has been greatly limited due to the low amount of hydrogen production. As a result of, it is of great meaning to explore a simple method to improve the photocatalytic hydrogen performance of SrTiO 3 .As a member of the metal sulfide family, CdS has a suitable bandgap (E g = 2.3 eV) with strong visible light absorption. [18][19][20] The inherent defects of CdS limit its practical application, such as easy photocorrosion and the high recombination rate

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Ultrathin ZIS nanosheets encapsulated in metal–organic-framework-derived CNCo-Fe₃O₄ as an efficient functional photocatalyst for hydrogen evolution

Abstract: Photocatalytic water into value-added energy is a promising strategy to resolve the environmental pollution and energy crisis. Herein, we proposed a facile method to design a p-n heterostructure photocatalyst for...

Cited by 19 publications

References 48 publications

Highly Water-Stable and Efficient Hydrogen-Producing Heterostructure Synthesized from Mn_0.5Cd_0.5S and a Zeolitic Imidazolate Framework ZIF-8 via Ligand and Cation Exchange

Highly Water-Stable and Efficient Hydrogen-Producing Heterostructure Synthesized from Mn_0.5Cd_0.5S and a Zeolitic Imidazolate Framework ZIF-8 via Ligand and Cation Exchange

Designing Surface-Defect Engineering to Enhance the Solar-Driven Conversion of CO₂ to C₂ Products over Zn₃In₂S₆/ZnS

Oxygen Vacancies‐Induced Dendritic SrTiO₃/CdS p–n Heterostructures Photocatalyst for Ultrahigh Hydrogen Evolution

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Ultrathin ZIS nanosheets encapsulated in metal–organic-framework-derived CNCo-Fe3O4 as an efficient functional photocatalyst for hydrogen evolution

Abstract: Photocatalytic water into value-added energy is a promising strategy to resolve the environmental pollution and energy crisis. Herein, we proposed a facile method to design a p-n heterostructure photocatalyst for...

Cited by 19 publications

References 48 publications

Highly Water-Stable and Efficient Hydrogen-Producing Heterostructure Synthesized from Mn0.5Cd0.5S and a Zeolitic Imidazolate Framework ZIF-8 via Ligand and Cation Exchange

Highly Water-Stable and Efficient Hydrogen-Producing Heterostructure Synthesized from Mn0.5Cd0.5S and a Zeolitic Imidazolate Framework ZIF-8 via Ligand and Cation Exchange

Designing Surface-Defect Engineering to Enhance the Solar-Driven Conversion of CO2 to C2 Products over Zn3In2S6/ZnS

Oxygen Vacancies‐Induced Dendritic SrTiO3/CdS p–n Heterostructures Photocatalyst for Ultrahigh Hydrogen Evolution

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Ultrathin ZIS nanosheets encapsulated in metal–organic-framework-derived CNCo-Fe₃O₄ as an efficient functional photocatalyst for hydrogen evolution

Highly Water-Stable and Efficient Hydrogen-Producing Heterostructure Synthesized from Mn_0.5Cd_0.5S and a Zeolitic Imidazolate Framework ZIF-8 via Ligand and Cation Exchange

Highly Water-Stable and Efficient Hydrogen-Producing Heterostructure Synthesized from Mn_0.5Cd_0.5S and a Zeolitic Imidazolate Framework ZIF-8 via Ligand and Cation Exchange

Designing Surface-Defect Engineering to Enhance the Solar-Driven Conversion of CO₂ to C₂ Products over Zn₃In₂S₆/ZnS

Oxygen Vacancies‐Induced Dendritic SrTiO₃/CdS p–n Heterostructures Photocatalyst for Ultrahigh Hydrogen Evolution