Improving photocatalytic activity in NO removal by adding metallic bismuth to SrTiO3 nanoparticles

Guo, Yanhua; Zhou, Sihua; Sun, Xianke; Yuan, Huanli

doi:10.1016/j.ceramint.2020.02.062

Cited by 15 publications

(9 citation statements)

References 37 publications

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“…The Bi 2 S 3 exhibits broad-range absorption of visible light irradiation due to its narrow band gap. The STOB-5% heterojunction enhances UV and visible light absorption due to the LSPR effect . Bi incorporation into SrTiO 3 promotes the LSPR effect.…”

Section: Resultsmentioning

confidence: 99%

“…The STOB-5% heterojunction enhances UV and visible light absorption due to the LSPR effect. 31 Bi incorporation into SrTiO 3 promotes the LSPR effect. Moreover, the incorporation of Bi leads to the SrTiO 3 -Bi 2 S 3 heterojunction formation.…”

Section: Resultsmentioning

confidence: 99%

“…Introduction of Bi into SrTiO 3 enhances the light-harvesting property due to the localized surface plasmon resonance (LSPR) effect, which resulted in the effective removal of NO. In this way, the introduction of Bi 2 S 3 into SrTiO 3 is expected to enhance the UV–visible light-harvesting and charge-carrier separation properties through the LSPR effect . The Bi 3+ occupies the Sr 2+ state due to the fact that the ionic radius of Bi 3+ (0.117 nm) is smaller than that of Sr 2+ (0.144 nm) .…”

Section: Introductionmentioning

confidence: 99%

“…In this way, the introduction of Bi 2 S 3 into SrTiO 3 is expected to enhance the UV−visible lightharvesting and charge-carrier separation properties through the LSPR effect. 31 The Bi 3+ occupies the Sr 2+ state due to the fact that the ionic radius of Bi 3+ (0.117 nm) is smaller than that of Sr 2+ (0.144 nm). 32 This leads to the nucleation of Bi 2 S 3 into SrTiO 3 , which leads to the formation of the SrTiO 3 /Bi 2 S 3 heterojunction.…”

Section: Introductionmentioning

confidence: 99%

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Preparation of SrTiO₃/Bi₂S₃ Heterojunction for Efficient Photocatalytic Hydrogen Production

et al. 2021

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SrTiO3, Bi2S3, and SrTiO3/Bi2S3 heterojunction were prepared for efficient photocatalytic hydrogen production. SrTiO3/Bi2S3 heterojunction was prepared by different weight percentages of Bi2S3 (1, 3, 5, and 7%) with SrTiO3. SrTiO3 and Bi2S3 are exhibited in cubic and orthorhombic crystal structures, respectively. The morphologies of SrTiO3 and Bi2S3 have existed as nanocubic and bar-like structures, respectively. Transmission electron microscopy (TEM) and X-ray photoelectron spectroscopy (XPS) results further confirmed the formation of SrTiO3/Bi2S3 heterojunction. The photoluminescence (PL) and electrochemical impedance spectroscopy (EIS) results indicated that the SrTiO3/Bi2S3 heterojunction reduces the rate of photogenerated electron–hole pair recombination and electron-transfer resistance than pure SrTiO3 and Bi2S3. The formation of SrTiO3/Bi2S3 heterojunction effectively separates the photogenerated charge carriers, which enhances the photocatalytic hydrogen production under UV light. The SrTiO3/Bi2S3 heterojunction shows superior photocatalytic hydrogen production than bare SrTiO3 and Bi2S3 due to the synergistic effect. The photocatalytic hydrogen production of SrTiO3/Bi2S3 (5%) gives 7.7 mmol g–1 within 180 min under UV irradiation.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Preparation of SrTiO₃/Bi₂S₃ Heterojunction for Efficient Photocatalytic Hydrogen Production

et al. 2021

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“…The art of photocatalytic NO x abatement is not only confined to TiO 2 -based materials. Several perovskites have drawn significant attention as promising photocatalysts. ,− Ni-loaded KTaO 3 photocatalyst showed a high activity of 44% NO 3 – conversion to N 2 after 25 h using a 400 W high-pressure mercury lamp . Bimetallic-alloy-modified photocatalyst PdSn/NiO/NaTaO 3 :La showed 100% nitrate conversion, and the selectivities of NH 3 , N 2 , and NO 2 – were 72%, 12%, and 0%, respectively, with 2 h photocatalytic reaction .…”

Section: Photocatalytic Reduction Of Aqueous Nitratementioning

confidence: 99%

Photocatalytic Materials for Reduction of Nitroarenes and Nitrates

Roy

2020

J. Phys. Chem. C

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This Mini-Review Article is a critical compendium of recent advances in the photocatalytic reduction of the priority pollutants nitroarenes and aqueous nitrate over various semiconducting materials. The photocatalytic reduction of nitroarenes produces useful industrial intermediate compounds, whereas the photocatalytic reduction of aqueous nitrates leads to the formation of harmless N 2 or NH 3 as a potential alternative to the Haber−Bosch process. This Mini-Review Article looks at the physical chemistry aspects of the photocatalytic materials as well as their respective optical band structure, surface morphology, size, crystalline structure, and polymorphic phases. The photocatalysts are categorized into five major segments: (a) band-engineered semiconducting photocatalysts, (b) quantum dots, (c) anionic and transition-metal-doped photocatalysts for optimum mid-gap states, (d) organic dyes or plasmonic metal-supported photocatalysts, and (e) photocatalysts with heterojunctions. Pristine and doped band-engineered TiO 2 stands out as the most explored class of materials for photoreduction of nitroarenes and nitrates. Other semiconductor oxides, like perovskites, layered graphitic-C 3 N 4 , graphene derivatives, and chalcogenides, are also discussed in this Mini-Review Article. The mechanistic details of the photocatalytic reduction of nitroaromatics and aqueous nitrates in correlation with the materials' physical properties are critically explored, with an overall conclusion at the end.

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Layered double hydroxide nanosheets as efficient photocatalysts for NO removal: Band structure engineering and surface hydroxyl ions activation

Zhang

Dong

et al. 2020

Applied Catalysis B: Environmental

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Improving photocatalytic activity in NO removal by adding metallic bismuth to SrTiO3 nanoparticles

Cited by 15 publications

References 37 publications

Preparation of SrTiO₃/Bi₂S₃ Heterojunction for Efficient Photocatalytic Hydrogen Production

Preparation of SrTiO₃/Bi₂S₃ Heterojunction for Efficient Photocatalytic Hydrogen Production

Photocatalytic Materials for Reduction of Nitroarenes and Nitrates

Layered double hydroxide nanosheets as efficient photocatalysts for NO removal: Band structure engineering and surface hydroxyl ions activation

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Improving photocatalytic activity in NO removal by adding metallic bismuth to SrTiO3 nanoparticles

Cited by 15 publications

References 37 publications

Preparation of SrTiO3/Bi2S3 Heterojunction for Efficient Photocatalytic Hydrogen Production

Preparation of SrTiO3/Bi2S3 Heterojunction for Efficient Photocatalytic Hydrogen Production

Photocatalytic Materials for Reduction of Nitroarenes and Nitrates

Layered double hydroxide nanosheets as efficient photocatalysts for NO removal: Band structure engineering and surface hydroxyl ions activation

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Product

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Preparation of SrTiO₃/Bi₂S₃ Heterojunction for Efficient Photocatalytic Hydrogen Production

Preparation of SrTiO₃/Bi₂S₃ Heterojunction for Efficient Photocatalytic Hydrogen Production