In situ construction of protonated g-C3N4/Ti3C2 MXene Schottky heterojunctions for efficient photocatalytic hydrogen production

Xu, Haiying; Xiao, Rong; Huang, Jingran; Jiang, Yan; Zhao, Chengxiao; Yang, Xiaofei

doi:10.1016/s1872-2067(20)63559-8

Cited by 176 publications

(86 citation statements)

References 61 publications

(48 reference statements)

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“…9a-c, to confirm the band structures of the samples. All of the samples are typical n-type semiconductors, as evidenced by their positive slopes [34]. The flat-band potentials of bulk Bi 2 WO 6 , Bi 2 WO 6 s, and C-Bi 2 WO 6 s were − 1.08, − 1.30, and − 1.11 V (vs. Ag/AgCl, pH = 7), Fig.…”

Section: Mott-schottky Curves and Band Structurementioning

confidence: 79%

Ultra-Thin Carbon-Doped Bi2WO6 Nanosheets for Enhanced Photocatalytic CO2 Reduction

Zhang

et al. 2021

Trans. Tianjin Univ.

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The photocatalytic reduction of CO2 is a promising strategy to generate chemical fuels. However, this reaction usually suffers from low photoactivity because of insufficient light absorption and rapid charge recombination. Defect engineering has become an effective approach to improve the photocatalytic activity. Herein, ultra-thin (~ 4.1 nm) carbon-doped Bi2WO6 nanosheets were prepared via hydrothermal treatment followed by calcination. The ultra-thin nanosheet structure of the catalyst not only provides more active sites but also shortens the diffusion distance of charge carriers, thereby suppressing charge recombination. Moreover, carbon doping could successfully extend the light absorption range of the catalyst and remarkably promote charge separation, thus inhibiting recombination. As a result, the as-prepared Bi2WO6 photocatalyst with ultra-thin nanosheet structure and carbon doping exhibits enhanced photocatalytic CO2 reduction performance, which is twice that of pristine ultra-thin Bi2WO6 nanosheet. This study highlights the importance of defect engineering in photocatalytic energy conversion and provides new insights for fabricating efficient photocatalysts.

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Section: Mott-schottky Curves and Band Structurementioning

confidence: 79%

Ultra-Thin Carbon-Doped Bi2WO6 Nanosheets for Enhanced Photocatalytic CO2 Reduction

Zhang

et al. 2021

Trans. Tianjin Univ.

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“…The surface charge of g-C 3 N 4 is modified to be positive by adjusting the pH of the mixed suspension to create electrostatic attraction. [71] For example, Fu et al dispersed as-prepared g-C 3 N 4 and WO 3 nanosheets in 20 vol% lactic acid solution. [72] The pH of the mixed suspension was measured to be 4.…”

Section: Electrostatic Self-assemblymentioning

confidence: 99%

g‐C₃N₄‐Based 2D/2D Composite Heterojunction Photocatalyst

et al. 2021

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“…Besides, a significantly increased absorption in the range of 550-800 nm for the NiO/CdS composites with the increasing NiO content could be assigned to the strong absorption of the NiO nanosheets. The bandgap energies of CdS and NiO were measured based on the transformed Kubelka-Munk function (Carbone et al, 2017;Chen et al, 2019;Xu et al, 2021). According to the Tauc plots (Figure 4B), the bandgap of the CdS nanorods and NiO nanosheets were calculated to be 2.37 and 3.17 eV, respectively (Kandi et al, 2020).…”

Section: Synthesis and Characterizationmentioning

confidence: 99%

NiO Nanosheets Coupled With CdS Nanorods as 2D/1D Heterojunction for Improved Photocatalytic Hydrogen Evolution

et al. 2021

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Designing low-cost, environment friendly, and highly active photocatalysts for water splitting is a promising path toward relieving energy issues. Herein, one-dimensional (1D) cadmium sulfide (CdS) nanorods are uniformly anchored onto two-dimensional (2D) NiO nanosheets to achieve enhanced photocatalytic hydrogen evolution. The optimized 2D/1D NiO/CdS photocatalyst exhibits a remarkable boosted hydrogen generation rate of 1,300 μmol h−1 g−1 under visible light, which is more than eight times higher than that of CdS nanorods. Moreover, the resultant 5% NiO/CdS composite displays excellent stability over four cycles for photocatalytic hydrogen production. The significantly enhanced photocatalytic activity of the 2D/1D NiO/CdS heterojunction can be attributed to the efficient separation of photogenerated charge carriers driven from the formation of p-n NiO/CdS heterojunction. This study paves a new way to develop 2D p-type NiO nanosheets-decorated n-type semiconductor photocatalysts for photocatalytic applications.

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In situ construction of protonated g-C3N4/Ti3C2 MXene Schottky heterojunctions for efficient photocatalytic hydrogen production

Cited by 176 publications

References 61 publications

Ultra-Thin Carbon-Doped Bi2WO6 Nanosheets for Enhanced Photocatalytic CO2 Reduction

Ultra-Thin Carbon-Doped Bi2WO6 Nanosheets for Enhanced Photocatalytic CO2 Reduction

g‐C₃N₄‐Based 2D/2D Composite Heterojunction Photocatalyst

NiO Nanosheets Coupled With CdS Nanorods as 2D/1D Heterojunction for Improved Photocatalytic Hydrogen Evolution

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In situ construction of protonated g-C3N4/Ti3C2 MXene Schottky heterojunctions for efficient photocatalytic hydrogen production

Cited by 176 publications

References 61 publications

Ultra-Thin Carbon-Doped Bi2WO6 Nanosheets for Enhanced Photocatalytic CO2 Reduction

Ultra-Thin Carbon-Doped Bi2WO6 Nanosheets for Enhanced Photocatalytic CO2 Reduction

g‐C3N4‐Based 2D/2D Composite Heterojunction Photocatalyst

NiO Nanosheets Coupled With CdS Nanorods as 2D/1D Heterojunction for Improved Photocatalytic Hydrogen Evolution

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g‐C₃N₄‐Based 2D/2D Composite Heterojunction Photocatalyst