Composition-dependent activity of Mn-doping NiS2 nanosheets for boosting photocatalytic H2 evolution

Xi, Zhu; Pan, Ziwei; Liu, Yuxin; Kang, Shichang; Wang, Liang; Lu, Wenqiang

doi:10.1016/j.jcis.2022.09.076

Cited by 18 publications

(3 citation statements)

References 56 publications

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“…The straight line in the low‐frequency range, shown in Figure 7c, means the Warburg behaviors. The more perpendicular the line is to the Y‐axis, the faster diffusion on the catalyst surface is [60] . The NiO(f)−CNT shows the lowest diffusion resistance compared with other materials maybe due to its large surface.…”

Section: Resultsmentioning

confidence: 99%

Co Ion‐, NiS2‐ and CNT‐Co‐Doped Nanoflower/Hollow Spherical NiO Nanocomposites for Efficient Electrocatalytic Oxidation of Methanol

Yu,

Zhang,

Long

et al. 2023

ChemistrySelect

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Nowadays, the development and utilization of clean energy are becoming increasingly urgent. Among them, methanol is a new, clean, and efficient energy source. Therefore, more and more studies are focusing on methanol anodic oxidation (MOR). In this work, nanoflower and hollow spherical NiO was synthesized by a simply hydrothermal method and then modified by Co ion, NiS2 and carbon nanotubes (CNTs). The optimal Co/NiO(f)/NiS2−CNT exhibits flower‐like morphology with a larger specific surface area, enlarged electrochemically active surface area and higher conductivity, which improve the electron transfer ability and electrocatalytic activity compared with pure NiO(f), NiO(f)/NiS2, NiO(f)/NiS2−CNT and hollow spherical Co/NiO(hs)/NiS2−CNT. The current density is ultrahigh of 203.46 mA ⋅ cm−2 at 0.8 V, which is 36 times higher than pure NiO(f) and almost 2 times higher than Co/NiO(hs)/NiS2−CNT. Therefore, this work offers a highly efficient and stable NiO based catalyst for methanol oxidation reaction.

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Section: Resultsmentioning

confidence: 99%

Co Ion‐, NiS2‐ and CNT‐Co‐Doped Nanoflower/Hollow Spherical NiO Nanocomposites for Efficient Electrocatalytic Oxidation of Methanol

Yu,

Zhang,

Long

et al. 2023

ChemistrySelect

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“…In n-type semiconductors, the conduction band potential (E CB ) is generally 0.1-0.2 V more negative than the at band potential. 45,46 Utilizing the formula E NHE = E CB + 0.241 V, the specic E CB positions for GDY and CoAl 2 O 4 were −0.64 V and −1.24 V versus the normal hydrogen electrode (NHE). Consequently, it can be inferred that the valence band potentials (E VB ) for GDY and CoAl 2 O 4 were 1.15 V and 0.45 V versus NHE, as determined using the formula: 47 Finally, the detailed band structures for GDY and CoAl 2 O 4 are illustrated in Fig.…”

Section: Optical Properties and Electronic Structuresmentioning

confidence: 99%

Engineering of a hierarchical S-scheme 2D/3D heterojunction with graphdiyne (g-C_nH_2n−2) coated 3D porous CoAl₂O₄ nanoflowers for highly efficient photocatalytic H₂ evolution

Hao,

Deng,

Fan

et al. 2024

J. Mater. Chem. A

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“…Regrettably, most of them suffer from low visible-light absorption capacity, leading to poor photocatalytic H 2 production performance. Among all kinds of semiconductors, transition metal sulfides are considered quite promising photocatalysts because of their brilliant visible-light absorption. − As a representative of transition metal sulfides, CdS has been widely used in photocatalytic hydrogen evolution reaction (HER) because of its desired band gap (∼2.4 eV) and appropriate band edge position. , Particularly, one-dimensional (1D) CdS nanowires (NWs) have aroused great concern due to their inherent optical, electronic, and structural superiorities …”

Section: Introductionmentioning

confidence: 99%

Cu₂MoS₄/CdS Nanosheet-Modified Nanowire Nanocomposites for Significantly Improved Visible Light-Driven Photocatalytic H₂ Evolution Activity

Zhao,

Wang,

et al. 2023

Energy Fuels

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The development of photocatalysts with high charge separation efficiency and visible-light-harvesting capacity is still a great challenge. In this work, we report a simple hydrothermal treatment to decorate the CdS nanowires (NWs) with co-catalyst Cu 2 MoS 4 nanosheets (NSs) for photocatalytic H 2 evolution reaction (HER). Especially when the molar ratio of Cu 2 MoS 4 to CdS is 3%, the Cu 2 MoS 4 /CdS shows excellent visible light-driven H 2 evolution activity (1967.83 μmol g −1 h −1 ), which is 18.8 times higher than that of pure CdS. Structural characterizations demonstrate a well-designed structure of the Cu 2 MoS 4 /CdS, in which Cu 2 MoS 4 NSs are tightly attached onto the CdS NWs to form a heterojunction. The optical property reveals that the 3%-Cu 2 MoS 4 /CdS nanocomposite displayed distinguished visible-light absorption capacity. Combined with the data analysis of the photoluminescence spectra, photocurrents, and electrochemical impedance spectra, it can be proved that there is effective separation of photogenerated electron−hole pairs in 3%-Cu 2 MoS 4 /CdS nanocomposite. All these factors synergistically boost the photocatalytic H 2 evolution performance of the Cu 2 MoS 4 /CdS, providing a new concept for the rational design of highly efficient visible-light-driven sulfide photocatalysts.

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Composition-dependent activity of Mn-doping NiS2 nanosheets for boosting photocatalytic H2 evolution

Cited by 18 publications

References 56 publications

Co Ion‐, NiS2‐ and CNT‐Co‐Doped Nanoflower/Hollow Spherical NiO Nanocomposites for Efficient Electrocatalytic Oxidation of Methanol

Co Ion‐, NiS2‐ and CNT‐Co‐Doped Nanoflower/Hollow Spherical NiO Nanocomposites for Efficient Electrocatalytic Oxidation of Methanol

Engineering of a hierarchical S-scheme 2D/3D heterojunction with graphdiyne (g-C_nH_2n−2) coated 3D porous CoAl₂O₄ nanoflowers for highly efficient photocatalytic H₂ evolution

Cu₂MoS₄/CdS Nanosheet-Modified Nanowire Nanocomposites for Significantly Improved Visible Light-Driven Photocatalytic H₂ Evolution Activity

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Composition-dependent activity of Mn-doping NiS2 nanosheets for boosting photocatalytic H2 evolution

Cited by 18 publications

References 56 publications

Co Ion‐, NiS2‐ and CNT‐Co‐Doped Nanoflower/Hollow Spherical NiO Nanocomposites for Efficient Electrocatalytic Oxidation of Methanol

Co Ion‐, NiS2‐ and CNT‐Co‐Doped Nanoflower/Hollow Spherical NiO Nanocomposites for Efficient Electrocatalytic Oxidation of Methanol

Engineering of a hierarchical S-scheme 2D/3D heterojunction with graphdiyne (g-CnH2n−2) coated 3D porous CoAl2O4 nanoflowers for highly efficient photocatalytic H2 evolution

Cu2MoS4/CdS Nanosheet-Modified Nanowire Nanocomposites for Significantly Improved Visible Light-Driven Photocatalytic H2 Evolution Activity

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Product

Resources

About

Engineering of a hierarchical S-scheme 2D/3D heterojunction with graphdiyne (g-C_nH_2n−2) coated 3D porous CoAl₂O₄ nanoflowers for highly efficient photocatalytic H₂ evolution

Cu₂MoS₄/CdS Nanosheet-Modified Nanowire Nanocomposites for Significantly Improved Visible Light-Driven Photocatalytic H₂ Evolution Activity