Rational design of Z-scheme PtS-ZnIn2S4/WO3-MnO2 for overall photo-catalytic water splitting under visible light

Ding, Yao; Wei, Dingqiong; He, Rong; Yuan, Rusheng; Xie, Tengfeng; Li, Zhaohui

doi:10.1016/j.apcatb.2019.117948

Cited by 84 publications

(37 citation statements)

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“…In addition, various styles of self-assembled photocatalyst nanostructures were synthesized, such as one-dimensional nanotubes 23 , two-dimensional layered structure 24,25 , three-dimensional network structure 26 , three-dimensional flower-like structure 27 and etc.MnO 2 has some advantages including low cost, high stability and environmental friendliness. Besieds, its narrow band gap can increase the utilization of visible light, which is very promising as a photocatalyst [28][29][30][31][32] . The layered structure of δ-MnO 2 is formed by the MnO 6 octahedral layer with shared edges, and there are some cations and H 2 O molecules between the layers to maintain the charge balance 33 .…”

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confidence: 99%

“…MnO 2 has some advantages including low cost, high stability and environmental friendliness. Besieds, its narrow band gap can increase the utilization of visible light, which is very promising as a photocatalyst [28][29][30][31][32] . The layered structure of δ-MnO 2 is formed by the MnO 6 octahedral layer with shared edges, and there are some cations and H 2 O molecules between the layers to maintain the charge balance 33 .…”

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confidence: 99%

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Fabrication of hollow flower-like magnetic Fe3O4/C/MnO2/C3N4 composite with enhanced photocatalytic activity

Yang

Chen

et al. 2021

Sci Rep

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The serious problems of environmental pollution and energy shortage have pushed the green economy photocatalysis technology to the forefront of research. Therefore, the development of an efficient and environmentally friendly photocatalyst has become a hotpot. In this work, magnetic Fe3O4/C/MnO2/C3N4 composite as photocatalyst was synthesized by combining in situ coating with low-temperature reassembling of CN precursors. Morphology and structure characterization showed that the composite photocatalyst has a hollow core–shell flower-like structure. In the composite, the magnetic Fe3O4 core was convenient for magnetic separation and recovery. The introduction of conductive C layer could avoid recombining photo-generated electrons and holes effectively. Ultra-thin g-C3N4 layer could fully contact with coupled semiconductor. A Z-type heterojunction between g-C3N4 and flower-like MnO2 was constructed to improve photocatalytic performance. Under the simulated visible light, 15 wt% photocatalyst exhibited 94.11% degradation efficiency in 140 min for degrading methyl orange and good recyclability in the cycle experiment.

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confidence: 99%

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confidence: 99%

Fabrication of hollow flower-like magnetic Fe3O4/C/MnO2/C3N4 composite with enhanced photocatalytic activity

Yang

Chen

et al. 2021

Sci Rep

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“…[ 163 ] The hierarchical flower‐like spheres vertically assembled by nanoplates were the common microstructures of hexagonal ZIS, which were attributed to its orderly anisotropic growth process. [ 164 ] Moreover, its various attractive characteristics such as low‐toxicity, tunable bandgap ( E g = 2.2–2.6 eV) with visible light response, and benign photostability have been rendering ZIS‐based materials appealing for photocatalytic applications such as H 2 production, [ 165,166 ] degradation of pollutants [ 167 ] and CO 2 conversion. [ 168 ]…”

Section: Ternary Metal Sulfide Photocatalystsmentioning

confidence: 99%

Nanostructured Metal Sulfides: Classification, Modification Strategy, and Solar‐Driven CO₂ Reduction Application

Wang

Lin

Tian

et al. 2020

Adv Funct Materials

271

170

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Solar‐driven conversion of CO2 into high value‐added fuels is expected to be an environmental‐friendly and sustainable approach for relieving the greenhouse gas effect and countering energy crisis. Metal sulfide semiconductors with wide photoresponsive range and favorable band structures are suitable photocatalysts for CO2 photoreduction. This review summarizes the recent progress on metal sulfide semiconductors for photocatalytic CO2 reduction. First, the fundamentals, mechanisms and some principles, like product selectivity, of photocatalytic CO2 reduction are introduced. Then, according to the elemental composition, the metal sulfide photocatalysts applied for CO2 reduction are classified into binary (CdS, ZnS, MoS2, SnS2, Bi2S3, In2S3,Cu2S, NiS/NiS2, and CoS2), ternary (ZnIn2S4, CdIn2S4, CuInS2, Cu3SnS4, and CuGaS2), and quaternary (Cu2ZnSnS4) systems, in which their crystal structures, photochemical characteristics, and photocatalytic CO2 reduction applications are systematically demonstrated. Especially, the diverse modification strategies for improving the activity and product selectivity of photocatalytic CO2 reduction on these metal sulfides are summarized. Finally, the current challenges and future directions for the development of metal sulfide photocatalysts for CO2 reduction are proposed. This review is expected to serve as a powerful reference for exploiting high‐efficiency metal sulfide photocatalysts for CO2 conversion and furthering related mechanism understanding.

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“…[9][10][11][12][13]. In addition, MnO 2 can also be available for environmental technology such as dye degradation [14,15], wastewater treatment [16,17], photocatalytic degradation of organic pollutants [18][19][20][21][22][23], and photo-electrochemical hydrogen production [24,25].…”

Section: Introductionmentioning

confidence: 99%

Upcycling of Wastewater via Effective Photocatalytic Hydrogen Production Using MnO2 Nanoparticles—Decorated Activated Carbon Nanoflakes

et al. 2020

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In the present work, we demonstrated the upcycling technique of effective wastewater treatment via photocatalytic hydrogen production by using the nanocomposites of manganese oxide-decorated activated carbon (MnO2-AC). The nanocomposites were sonochemically synthesized in pure water by utilizing MnO2 nanoparticles and AC nanoflakes that had been prepared through green routes using the extracts of Brassica oleracea and Azadirachta indica, respectively. MnO2-AC nanocomposites were confirmed to exist in the form of nanopebbles with a high specific surface area of ~109 m2/g. When using the MnO2-AC nanocomposites as a photocatalyst for the wastewater treatment, they exhibited highly efficient hydrogen production activity. Namely, the high hydrogen production rate (395 mL/h) was achieved when splitting the synthetic sulphide effluent (S2− = 0.2 M) via the photocatalytic reaction by using MnO2-AC. The results stand for the excellent energy-conversion capability of the MnO2-AC nanocomposites, particularly, for photocatalytic splitting of hydrogen from sulphide wastewater.

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Rational design of Z-scheme PtS-ZnIn2S4/WO3-MnO2 for overall photo-catalytic water splitting under visible light

Cited by 84 publications

References 50 publications

Fabrication of hollow flower-like magnetic Fe3O4/C/MnO2/C3N4 composite with enhanced photocatalytic activity

Fabrication of hollow flower-like magnetic Fe3O4/C/MnO2/C3N4 composite with enhanced photocatalytic activity

Nanostructured Metal Sulfides: Classification, Modification Strategy, and Solar‐Driven CO₂ Reduction Application

Upcycling of Wastewater via Effective Photocatalytic Hydrogen Production Using MnO2 Nanoparticles—Decorated Activated Carbon Nanoflakes

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Rational design of Z-scheme PtS-ZnIn2S4/WO3-MnO2 for overall photo-catalytic water splitting under visible light

Cited by 84 publications

References 50 publications

Fabrication of hollow flower-like magnetic Fe3O4/C/MnO2/C3N4 composite with enhanced photocatalytic activity

Fabrication of hollow flower-like magnetic Fe3O4/C/MnO2/C3N4 composite with enhanced photocatalytic activity

Nanostructured Metal Sulfides: Classification, Modification Strategy, and Solar‐Driven CO2 Reduction Application

Upcycling of Wastewater via Effective Photocatalytic Hydrogen Production Using MnO2 Nanoparticles—Decorated Activated Carbon Nanoflakes

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Product

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Nanostructured Metal Sulfides: Classification, Modification Strategy, and Solar‐Driven CO₂ Reduction Application