MoS<sub>2</sub>–Nanosheets-Based Catalysts for Photocatalytic CO<sub>2</sub> Reduction: A Review

Singh, Shreya; Modak, Arindam; Pant, Kamal Kishore; Sinhamahapatra, Apurba; Biswas, Pratim

doi:10.1021/acsanm.1c00990

Cited by 81 publications

(43 citation statements)

References 185 publications

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“…H 2 O 2 , a green and benign oxidant, is widely applied in many areas such as chemical synthesis, environmental remediation, and industrial production. − At present, hydrogen peroxide is synthesized by an industrial anthraquinone method; however, this method involves many sequential steps, thus consuming a vast amount of energy and resources. − Consequently, massive efforts have been devoted to development of eco-friendly routes toward green H 2 O 2 production such as the direct synthesis from H 2 and O 2 , electrochemical synthesis, and photocatalytic H 2 O 2 production. − Among them, photocatalytic H 2 O 2 production utilizing sunlight as the energy input is one of the most promising pathways. , Given that photocatalysis mainly relies on the use of photocatalytic materials, thus, exploiting effective photocatalysts is of vital importance to produce H 2 O 2 …”

Section: Introductionmentioning

confidence: 99%

BiVO₄ Microparticles Decorated with Cu@Au Core-Shell Nanostructures for Photocatalytic H₂O₂ Production

Wang

et al. 2021

ACS Appl. Nano Mater.

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The nanostructured Au cocatalyst modification of BiVO4 photocatalyst, as a prospective method, can significantly promote its photocatalytic H2O2 production performance. However, the contact between Au and BiVO4 causes a strong built-in field, which impedes the photogenerated-electron transfer and the accumulation of negative charge density for Au, which reduces its catalytic activity of two-electron O2 reduction, thus limiting the enhanced H2O2 production performance of the Au/BiVO4 photocatalyst. To solve the above problems, here, a Cu@Au core-shell nanostructured cocatalyst is designed to selectively modify on the electron-enriched (010) facet of a single-crystal BiVO4 microparticle by facile photodeposition and subsequently galvanic displacement. In this case, ohmic contact between the Cu nanoparticle and (010) facet of BiVO4 can effectively transfer the photogenerated electrons to the Au cocatalyst and simultaneously facilitate the catalytic activity improvement of two-electron O2 reduction for the Au cocatalyst due to its low negative charge accumulation. As a result, the optimized BiVO4 photocatalyst with Cu@Au core-shell nanostructured modification exhibits obviously improved photocatalytic performance of H2O2 formation (91.1 μmol L–1) compared with Au/BiVO4 (62.5 μmol L–1). The present strategy of a bimetal cocatalyst with a core-shell nanostructure opens up an insight to explore effective photocatalytic materials for the application of H2O2 production.

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Section: Introductionmentioning

confidence: 99%

BiVO₄ Microparticles Decorated with Cu@Au Core-Shell Nanostructures for Photocatalytic H₂O₂ Production

Wang

et al. 2021

ACS Appl. Nano Mater.

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“…Two types of semiconducting catalysts are typically used, namely, i) wide bandgap semiconductors (e.g., TiO 2 and ZnO) and ii) narrow bandgap semiconductors (e.g., Cu 2 O and MoS 2 ). [72][73][74][75][76][77] Wide bandgap semiconductors suffer from inefficient charge separation because their wide bandgaps limit charge formation under light from the visible region of the spectrum. Many efforts have been made to improve charge transfer during catalysis.…”

Section: Insights On Photocatalytic Co 2 Reductionmentioning

confidence: 99%

Single‐Atom Catalysts (SACs) for Photocatalytic CO₂ Reduction with H₂O: Activity, Product Selectivity, Stability, and Surface Chemistry

Hiragond

Powar

Lee

et al. 2022

Small

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electrochemical, [7][8][9] thermo-, [10,11] and biocatalysis. [12,13] Converting CO 2 using readily available sunlight and water is one of the most promising strategies due to the following advantages: i) it utilizes solar light, a renewable energy, to drive the reduction of CO 2 , ii) it can convert CO 2 into valuable carbonaceous products like CO, CH 4 , C 2 H 6 , and CH 3 OH, iii) it operates under atmospheric conditions, iv) it is a controllable process, and v) it is scalable for industrial application. [14,15] Thus, converting undesirable CO 2 into value-added chemicals using artificial photosynthesis is a plausible way to address the current environmental and energy issues associated with the burning of fossil fuels. [16] Given the significance of photocatalytic CO 2 conversion, researchers have extensively researched various catalysts, such as metal oxides, alloys, chalcogenides, carbon-based structures, organic polymers, inorganic complexes, and MXenes. [17][18][19][20][21][22][23][24][25][26] However, low productivity, poor product selectivity, poor long-term stability, sluggish mechanisms, and economic unviability limit the application of these conventional catalysts. Furthermore, the solar to fuel conversion efficiency of most reported catalysts is less than 1%, which is insufficient for large-scale applications. Accordingly, the need for high-performance and economically viable catalysts has prompted research organizations to design and synthesize a range of materials that can advance CO 2 reduction technology and its commercial viability.It has been recognized that the downsizing of nanoparticles (NPs) of a catalyst exposes more active sites, leading to the optimization of its electronic properties. [27] Recently, catalysts based on size-and shape-controlled, atomically dispersed metals have garnered the attention of the scientific community for various energy and environmental applications. [28,29] Single-atom (SA) catalysts (SACs) are obtained once the size and aggregation of metal particles are reduced to isolated metal atoms, which form low coordination states and enable the use of almost 100% of active metal sites; the electronic properties of metal SAs differ from those of corresponding bulk materials. [30,31] In nature, the magnesium porphyrin complex in chlorophyll has an SA-like structure necessary for photosynthesis; the iron porphyrin complex in cytochrome has a similar SA-like structure which plays a vital role in the molecular transfer of CO 2 . [32][33][34] In recent years, single-atom catalysts (SACs) have attracted the interest of researchers owing to their suitability for various catalytic applications. For instance, their optoelectronic features, site-specific activity, and costeffectiveness make SACs ideal for photocatalytic CO 2 reduction. The activity, product selectivity, and photostability of SACs depend on various factors such as the nature of the metal/support material, the interaction between the metal atoms and support, light-harvesting ability, charge separation behavior, ...

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“…6 Beyond CO2RR, TMDCs have shown broad catalytic activity towards other reactions, such as oxygen reduction, 7 hydrodesulfurization, 8,9 and hydrogen evolution (HER). 10,11 Among TMDCs, MoS2 has the most established track record as a CO2RR electrocatalyst, 12,13 thus serving a good model system to uncover fundamental underpinnings of function that may apply to TMDCs as a class of materials.…”

Section: Introductionmentioning

confidence: 99%

Active states during the reduction of CO2 by an MoS2 electrocatalyst

Kumar

Jamnuch

Majidi

et al. 2022

Preprint

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Transition-metal dichalcogenides (TMDCs) such as MoS2 are earth-abundant catalysts that are attractive for many chemical processes, including the carbon dioxide reduction reaction (CO2RR). While many studies have correlated synthetic preparation and architectures with macroscopic electrocatalytic performance, not much is known about the state of MoS2 under functional conditions, particularly its interactions with target molecules like CO2. Here, we combine operando Mo K- and S K-edge X-ray absorption spectroscopy (XAS) with first-principles simulations to track changes in the electronic structure of MoS2 nanosheets during CO2RR. Comparison of the simulated and measured XAS discerned the existence of Mo-CO2 binding in the active state. This state perturbs hybridized Mo 4d-S 3p states and is critically mediated by sulfur vacancies induced electrochemically. The study sheds new light into the underpinnings of the excellent performance of MoS2 in CO2RR. The electronic signatures we reveal could be a screening criterion toward further gains in activity and selectivity of TMDCs in general.

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MoS₂–Nanosheets-Based Catalysts for Photocatalytic CO₂ Reduction: A Review

Cited by 81 publications

References 185 publications

BiVO₄ Microparticles Decorated with Cu@Au Core-Shell Nanostructures for Photocatalytic H₂O₂ Production

BiVO₄ Microparticles Decorated with Cu@Au Core-Shell Nanostructures for Photocatalytic H₂O₂ Production

Single‐Atom Catalysts (SACs) for Photocatalytic CO₂ Reduction with H₂O: Activity, Product Selectivity, Stability, and Surface Chemistry

Active states during the reduction of CO2 by an MoS2 electrocatalyst

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MoS2–Nanosheets-Based Catalysts for Photocatalytic CO2 Reduction: A Review

Cited by 81 publications

References 185 publications

BiVO4 Microparticles Decorated with Cu@Au Core-Shell Nanostructures for Photocatalytic H2O2 Production

BiVO4 Microparticles Decorated with Cu@Au Core-Shell Nanostructures for Photocatalytic H2O2 Production

Single‐Atom Catalysts (SACs) for Photocatalytic CO2 Reduction with H2O: Activity, Product Selectivity, Stability, and Surface Chemistry

Active states during the reduction of CO2 by an MoS2 electrocatalyst

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MoS₂–Nanosheets-Based Catalysts for Photocatalytic CO₂ Reduction: A Review

BiVO₄ Microparticles Decorated with Cu@Au Core-Shell Nanostructures for Photocatalytic H₂O₂ Production

BiVO₄ Microparticles Decorated with Cu@Au Core-Shell Nanostructures for Photocatalytic H₂O₂ Production

Single‐Atom Catalysts (SACs) for Photocatalytic CO₂ Reduction with H₂O: Activity, Product Selectivity, Stability, and Surface Chemistry