Synthesis of MoS2/SrZrO3 heterostructures and their photocatalytic H2 evolution under UV irradiation

Tian, Qingwen; Zhang, Li; Liu, Jiahui; Li, Naixu; Ma, Quanhong; Zhou, Jiancheng; Sun, Yueming

doi:10.1039/c4ra11135d

Cited by 44 publications

(26 citation statements)

References 41 publications

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“…Recently, Tian et al. synthesized a novel heterojunction of a MoS 2 /SrZrO 3 photocatalyst (via a simple hydrothermal process) and applied it for photocatalytic H 2 evolution under UV light irradiation. The rate of H 2 evolution for pure SrZrO 3 photocatalyst (with Na 2 S/Na 2 SO 3 as a sacrificial agent) was 9.75 mmol h −1 g −1 whereas the rate was increased 2.7 times to reach 26.55 mmol h −1 g −1 by introducing 0.05 wt.…”

Section: Mos2‐based Composites As Photocatalysts For the Splitting Ofmentioning

confidence: 99%

MoS₂ as a co‐catalyst for photocatalytic hydrogen production from water

Han

2016

Energy Science & Engineering

228

129

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Solar-to-hydrogen conversion based on photocatalytic water splitting is a promising pathway for sustainable hydrogen production. The photocatalytic process requires highly active, inexpensive, and earth-abundant materials as photocatalysts. As a presentative layer-structured transition metal dichalcogenides, molybdenum disulfide (MoS 2 ) is attracting intensive attention due to its unique electro and photo properties. In this article, we comprehensively review the recent research efforts of exploring MoS 2 as a co-catalyst for photocatalytic hydrogen production from water, with emphasis on its combination with CdS, CdSe, graphene, carbon nitride, TiO 2 , and others. It is shown that MoS 2 -semiconductor composites are promising photocatalysts for hydrogen evolution from water under visible light irradiation. 286

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Section: Mos2‐based Composites As Photocatalysts For the Splitting Ofmentioning

confidence: 99%

MoS₂ as a co‐catalyst for photocatalytic hydrogen production from water

Han

2016

Energy Science & Engineering

228

129

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“…Among them, SrZrO 3 is an n-type perovskite semiconductor with a wide band gap, and it has been used as photocatalyst, proton-conductor material, high voltage and high reliability capacitor [24,25]. Recently, Tian et al [26] synthesized SrZrO 3 with a small amount of MoS 2 loaded on the surface of SrZrO 3 and applied the material as the photocatalyst for H 2 evolution. The result indicated that SrZrO 3 exhibited great potential in photocatalytic field.…”

mentioning

confidence: 99%

Photoreduction of carbon dioxide using strontium zirconate nanoparticles

et al. 2015

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tocatalytic reduction of CO 2 into methanol, formic acid, methane and formaldehyde using semiconductor catalysts such as TiO 2 , ZnO, CdS, GaP and WO 3 . After that a variety of catalysts including metal oxides [11−13], sulfides [14,15] and titanium-based materials [16−21] have been investigated for the efficient conversion of CO 2 into either gas or liquid products. Recently, the peroveskite type materials ABO 3 (such as SrTiO 3 , BiVO 4 , SrZrO 3 , etc.) have been drawn much attention for photocatalysis, due to their nontoxicity and stability [22,23]. Among them, SrZrO 3 is an n-type perovskite semiconductor with a wide band gap, and it has been used as photocatalyst, proton-conductor material, high voltage and high reliability capacitor [24,25]. Recently, Tian et al. [26] synthesized SrZrO 3 with a small amount of MoS 2 loaded on the surface of SrZrO 3 and applied the material as the photocatalyst for H 2 evolution. The result indicated that SrZrO 3 exhibited great potential in photocatalytic field. Because of its excellent stability and optical property, SrZrO 3 can also be suitable for CO 2 reduction under UV light irradiation, whereas there are scarcely ever studies on it.In this paper, we synthesized SrZrO 3 by a sonochemical method and reported the performance of photocatalytic conversion of dissolved CO 2 in water under a 300 W Xenon lamp. The possible mechanism of the photoreduction of CO 2 by SrZrO 3 was also proposed. EXPERIMENTAL ChemicalsThe chemicals used for the synthesis of SrZrO 3 are Sr(NO 3 ) 2 (99.5%), ZrOCl 2 •8H 2 O (>99%), cetyltrimethyl ammonium bromide (99%), KOH (analytical grade >82%), Pb(NO 3 ) 2 (>99%) and thioacetamide (C 2 H 5 NS>99%). All the chemicals were purchased from Sinopharm Chemicals and were used as received without further treatment.The utilization of CO2 and solar energy have drawn much attention due to global warming and fuel crisis. Of particular interest in our research, we prepared strontium zirconate (SrZrO3) nanoparticles as the photocatalyst to convert CO2 into value-added products. SrZrO3 nanoparticles were successfully synthesized via a sonochemical method and applied to the photoreduction of CO2. The samples were characterized by X-ray diffraction, Raman spectroscopy, scanning electron microscopy, Brunauere Emmette Teller measurement, X-ray photoelectron spectroscopy and UV-vis absorption spectroscopy. Ethanol, methane and carbon monoxide were the major products with the yield respectively as follows, 41 μmol g -1 , 2.57 μmol g -1 and 1.6 μmol g -1 after 4 h of reaction. The reason for the multiple photoreduction products is briefly discussed. Our work indicates that the as-prepared SrZrO3 nanoparticles can be used as a promising photocatalyst in turning CO2 into value-added chemicals.

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“…The Ru 0 /Ru 4+ ratio of 62.2:37.8 by XPS curve fitting was observed, demonstrating that some RuO 2 species still exist on the catalyst after H 2 reduction. Notably, the peak of C 1s at 284.7 eV should be a result of C–C carbon from the residue of polyvinylpyrrolidone. , …”

Section: Resultsmentioning

confidence: 99%

Magnetically Recoverable Bifunctional Catalysts for the Conversion of Cellulose to 1,2-Propylene Glycol

Xin

Yin

et al. 2020

ACS Sustainable Chem. Eng.

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The use of cellulose instead of oil to produce 1,2-propylene glycol (1,2-PG) is of great significance for building a sustainable world. Herein, we synthesize Fe3O4@SiO2/Ru-WO x core–shell magnetically recoverable catalysts containing both Lewis acid and metal active sites using well-shaped Fe3O4@SiO2 core–shell magnetic nanospheres as the substrate. We investigated the catalytic performances of the bimetallic catalysts with various metals as well as different metal contents and WO x loadings for the conversion of cellulose to 1,2-PG. The results showed that Fe3O4@SiO2/10%Ru-20%WO x was more favorable for 1,2-PG production, with a 1,2-PG selectivity of 32.4% and a cellulose conversion of 96.8%. Our characterization and activity tests suggested that WO x on the Fe3O4@SiO2 nanospheres produced abundant Lewis acid sites to effectively promote glucose isomerization to fructose before glucose undergoes the retro-aldol condensation reaction. Moreover, the Ru further hydrogenated the C3 intermediate to 1,2-PG. It was notable that the catalyst can be separated through a simple magnetic separation after the end of the reaction, and it still maintained high catalytic activity after 5 uses.

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Synthesis of MoS₂/SrZrO₃ heterostructures and their photocatalytic H₂ evolution under UV irradiation

Abstract: A novel heterojunction of a MoS2/SrZrO3 photocatalyst was successfully synthesized via a simple hydrothermal process and applied to photocatalytic H2 evolution under UV light irradiation.

Cited by 44 publications

References 41 publications

MoS₂ as a co‐catalyst for photocatalytic hydrogen production from water

MoS₂ as a co‐catalyst for photocatalytic hydrogen production from water

Photoreduction of carbon dioxide using strontium zirconate nanoparticles

Magnetically Recoverable Bifunctional Catalysts for the Conversion of Cellulose to 1,2-Propylene Glycol

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Synthesis of MoS2/SrZrO3 heterostructures and their photocatalytic H2 evolution under UV irradiation

Abstract: A novel heterojunction of a MoS2/SrZrO3 photocatalyst was successfully synthesized via a simple hydrothermal process and applied to photocatalytic H2 evolution under UV light irradiation.

Cited by 44 publications

References 41 publications

MoS2 as a co‐catalyst for photocatalytic hydrogen production from water

MoS2 as a co‐catalyst for photocatalytic hydrogen production from water

Photoreduction of carbon dioxide using strontium zirconate nanoparticles

Magnetically Recoverable Bifunctional Catalysts for the Conversion of Cellulose to 1,2-Propylene Glycol

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Synthesis of MoS₂/SrZrO₃ heterostructures and their photocatalytic H₂ evolution under UV irradiation

MoS₂ as a co‐catalyst for photocatalytic hydrogen production from water

MoS₂ as a co‐catalyst for photocatalytic hydrogen production from water