Heterostructural design of I-deficient BiOI for photocatalytic decoloration and catalytic CO<sub>2</sub> conversion

Hu, Chechia; Huang, Huixin; Lin, Yi‐Feng; Tung, Kuo‐Lun; Chen, Tzu-Hsin; Lo, Lin

doi:10.1039/c9cy00663j

Cited by 21 publications

(12 citation statements)

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“…To be brief, all characterization results confirm that oxygen vacancy engineering is an effective approach to improve the performance of catalysts for artificial photosynthesis. A similar work was reported by Hu and his coauthors, 97 where I‐deficient BiOI catalyst to enhance the photocatalytic activity was designed and synthesized by a microwave‐assisted hydrothermal strategy. The I − defects were recognized as electron traps in the reaction of photocatalytic CO 2 reduction, which played a pivotal role in the performance of BiOI catalyst.…”

Section: Design and Synthesis Of Efficient Photocatalystsmentioning

confidence: 73%

“…Moreover, surface defect engineering can effectively improve the separation efficiency of photogenerated electron/hole pairs and meanwhile adjust the electronic structure broadening the light absorption range. A great deal of precious works dedicated to engineering surface defect are available here for easy reference 28,31,43,97‐101 . For example, Xia et al 101 unraveled how the surface defects of catalyst work when applied in photocatalytic CO 2 reduction.…”

Section: Design and Synthesis Of Efficient Photocatalystsmentioning

confidence: 99%

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Engineering approach toward catalyst design for solar photocatalytic CO ₂ reduction: A critical review

Zhang

et al. 2021

Int J Energy Res

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Summary Solar‐driven converting CO2 to value‐added chemicals can not only address the ever‐growing energy crisis, but also simultaneously mitigate CO2 emission. Although much progress has been made in the last decade, it still remains great challenge to achieve the efficient reduction of CO2 with desirable productivity and high product selectivity because CO2 is a thermodynamically stable and inert molecule with large bond energy. Design and synthesis of efficient catalyst play a pivotal role in promoting the activity and selectivity of photocatalytic CO2 reduction. Apart from the active sites engineering, manipulation of the charge separation and light harvesting efficiency or prolonging the lifetime of photogenerated carriers also greatly matters. Consequently, this review summarizes recent advances in photocatalyst design for CO2 conversion from two major aspects, namely active sites engineering and carriers lifespan prolonging. Firstly, we sort out the fundamental principles and merits of artificial photosynthesis in order to provide readers with a current snapshot of this rapidly developed field. Subsequently, various catalyst engineering strategies, including doping, alloying, Z‐scheme structure construction, are discussed in detail. Finally, some challenging issues as well as insights into the future development of artificial photosynthesis are presented.

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Section: Design and Synthesis Of Efficient Photocatalystsmentioning

confidence: 73%

Section: Design and Synthesis Of Efficient Photocatalystsmentioning

confidence: 99%

Engineering approach toward catalyst design for solar photocatalytic CO ₂ reduction: A critical review

Zhang

et al. 2021

Int J Energy Res

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“…Fabricating oxygen vacancy on the surface could induce a defect level under the origin CB level, which obtains a strong ability to not capture photo‐generated electrons [63] . Thus, the photo‐excited electrons transfer preferentially in oxygen vacancies rather than recombine with photogenerated holes, which could restrain the recombination of electron‐hole pairs [13,14c,39,53–54,64] . What’ more, oxygen vacancies induced defect states can extend the light absorption range [62] .…”

Section: Strategies For Optimizing Co2 Photoreduction Activitymentioning

confidence: 99%

“…Despite from the oxygen vacancies, varieties of metallic and nonmetallic vacancies can also be fabricated to optimize the physicochemical properties and photocatalytic performance of bismuth‐based materials, such as V Bi , V V , V I and so on [64,67] . For example, by fabricating Bi vacancies on the surface of the BiOBr ultrathin nanosheets ( V Bi ‐BiOBr UNs), the CO generation rate was improved up to 20.1 μmol g −1 h −1 in pure water [67] .…”

Section: Strategies For Optimizing Co2 Photoreduction Activitymentioning

confidence: 99%

Review on Bismuth‐Based Photocatalyst for CO₂ Conversion

Liu

Xiao

et al. 2021

ChemNanoMat

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Over the past few decades, rising global concentrations of carbon dioxide (CO2) produced from excessive consumption of fossil fuels have become the main cause of the greenhouse effect around the world. Converting CO2 into solar fuel through photocatalysis is an effective solution to mitigate the greenhouse effect and energy crisis simultaneously. Increasingly attention has been paid on bismuth‐based photocatalytic CO2 reduction owing to the unique electronic structure of bismuth‐based photocatalysts. In recent years, researchers have made many breakthroughs in the bismuth‐based photocatalytic reduction of carbon dioxide. In this review, we summarize the structure of common bismuth‐based photocatalysts and focus on the recent progress of rational approach for optimizing catalysts loading, including morphology design, component regulation, facet engineering, doping, and defects engineering on the single bismuth‐based photocatalytic system, cocatalyst loading, heterojunction construction, localized surface plasmon resonance, and polarization. Finally, perspectives and opportunities are presented for future trends of CO2 photocatalytic conversion.

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“…Bismuth oxyiodide (BiOI), as a p‐type semiconductor has a narrow band gap (∼1.8 eV), which is helpful in widely utilizing visible light . In addition, BiOI with layered structure can form an internal electric field, which is beneficial to improve the separation of photogenerated charge pairs and form an ultra‐thin two‐dimensional (2D) structure exposed more reaction active sites . Zinc tungstate (ZnWO 4 ) is a typical n‐type semiconductor material with high chemical stability, non‐toxicity and fantastic redox ability .…”

Section: Introductionmentioning

confidence: 99%

Constructing 1D/2D BiOI/ZnWO₄p‐n heterojunction photocatalyst with enhanced photocatalytic removal of NO

Gong

Zhu

Bello

et al. 2020

J of Chemical Tech & Biotech

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BACKGROUND: Photocatalysis technology based on green renewable solar energy has broad prospects in environmental protection and new energy utilization. The energy of the light can be utilized to convert the pollutants in the environment into non-toxic substances even available products. Due to its low cost and environmental protection, photocatalysis technology has been further developed in the fields of water splitting, sewage treatment and nitrogen oxides (NO x ) removal.RESULTS: In this study, zinc tungstate (ZnWO 4 ) nanorods loaded on bismuth oxyiodide (BiOI) nanosheets with exposed {001} facet forming a 1D/2D BiOI/ZnWO 4 p-n heterojunction photocatalysts were synthesized and their photocatalytic activities for nitric oxide (NO) removal were investigated. The 20% BOI/ZWO composite exhibited the most excellent photocatalytic NO removal performance, which were 32.32% and 48.24% under visible light and simulated sunlight irradiation, respectively. CONCLUSION: A novel 1D/2D BiOI/ZnWO 4 p-n heterojunction was successfully synthesized by a two-step procedure. Compared to the pure ZnWO 4 and BiOI, the 20% BOI/ZWO composite has a significant increase in photocatalytic activity which is attributed to the enhanced visible light absorption and the improved separation of charge carriers. Trapping experiments and electron spin resonance results indicate that the hole (h + ), super oxygen radical (·O 2 − ) and hydroxyl radical (·OH) play minor roles, while the electron (e − ) has a major contribution to the NO removal process. Therefore, the BiOI/ZnWO 4 p-n heterojunction is a promising material for NO removal.

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Heterostructural design of I-deficient BiOI for photocatalytic decoloration and catalytic CO₂ conversion

Abstract: I− vacancies in BiOI play a major role in governing the photocatalysis and catalysis.

Cited by 21 publications

References 91 publications

Engineering approach toward catalyst design for solar photocatalytic CO ₂ reduction: A critical review

Engineering approach toward catalyst design for solar photocatalytic CO ₂ reduction: A critical review

Review on Bismuth‐Based Photocatalyst for CO₂ Conversion

Constructing 1D/2D BiOI/ZnWO₄p‐n heterojunction photocatalyst with enhanced photocatalytic removal of NO

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Heterostructural design of I-deficient BiOI for photocatalytic decoloration and catalytic CO2 conversion

Abstract: I− vacancies in BiOI play a major role in governing the photocatalysis and catalysis.

Cited by 21 publications

References 91 publications

Engineering approach toward catalyst design for solar photocatalytic CO 2 reduction: A critical review

Engineering approach toward catalyst design for solar photocatalytic CO 2 reduction: A critical review

Review on Bismuth‐Based Photocatalyst for CO2 Conversion

Constructing 1D/2D BiOI/ZnWO4p‐n heterojunction photocatalyst with enhanced photocatalytic removal of NO

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Heterostructural design of I-deficient BiOI for photocatalytic decoloration and catalytic CO₂ conversion

Engineering approach toward catalyst design for solar photocatalytic CO ₂ reduction: A critical review

Engineering approach toward catalyst design for solar photocatalytic CO ₂ reduction: A critical review

Review on Bismuth‐Based Photocatalyst for CO₂ Conversion

Constructing 1D/2D BiOI/ZnWO₄p‐n heterojunction photocatalyst with enhanced photocatalytic removal of NO