Visible light driven photocatalytic reduction of CO2 on Au-Pt/Cu2O/ReS2 with high efficiency and controllable selectivity

Huang, Qiang; Yang, Jiayu; Qi, Fei; Zhang, Wenxia; Zhang, Nan; Liang, Zhiyu; Liu, Jiaxin; Tian, Changqing; Tang, Xiaosheng; Wu, Daofu; Huo, Benjun

doi:10.1016/j.cej.2022.135299

Cited by 26 publications

(19 citation statements)

References 61 publications

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“…The mass spectra of products of 13 CO 2 photoreduction were recorded by a differentially pumped quadrupole mass spectrometer (Hiden HPR20). The apparent quantum yield (AQY) was achieved by referring to our previous work …”

Section: Methodsmentioning

confidence: 99%

“…As the adsorption process plays an import role in the photocatalytic performance, 45 the quasi sphere with conspicuous sags and crests of the Cs 2 TeX 6 microcrystals as observed in Figures 1 and S1−S4 could supply abundant active sites for the gas adsorption and subsequent photocatalytic reaction to guarantee high photocatalytic activity of the Cs 2 TeX 6 microcrystals. In addition, as the generated intermediates and CO and CH 4 molecules could occupy some of the photocatalytic active sites, 46 the product yield rates were decreased with time during the first 3 h of irradiation as shown in Figure 4c,d.…”

Section: Chemical Composition Of Cs 2 Tex 6 Microcrystalsmentioning

confidence: 96%

“…The apparent quantum yield (AQY) was achieved by referring to our previous work. 46 2.5. Stability Test.…”

Section: Photocatalyst Characterizationmentioning

confidence: 99%

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Lead-Free Cs₂TeX₆ (X = Cl, Br, and I) Perovskite Microcrystals with High Stability for Efficient Photocatalytic CO₂ Reduction

et al. 2022

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In response to calling for a sustainable and carbon-neutral economy, the conversion of CO2 to useful chemicals using the solar energy is a potential tactic to relieve the global energy dilemma and environmental issues, which has been a hot topic so far. Recently, the lead halide perovskites as novel photocatalysts have attracted researchers’ interests. However, they generally encounter poor stability and lead toxicity, restricting their large-scale practical applications. Here, the lead-free Cs2TeX6 (X = Cl, Cl0.5Br0.5, Br, Br0.5I0.5, and I) perovskite microcrystals with strong stability were prepared and used to realize the CO2 photocatalytic reduction efficiently. The prepared Cs2TeBr6 microcrystals delivered stronger photocatalytic ability than many previously reported photocatalysts, with the CO and CH4 yields of 308.63 and 60.42 μmolg–1, respectively, under 3 h of illumination. The presented strategy in our work provides new ideas of designing and preparing efficient and practical CO2 reduction photocatalysts based on nonleaded and high-stability halide perovskites.

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Section: Methodsmentioning

confidence: 99%

Section: Chemical Composition Of Cs 2 Tex 6 Microcrystalsmentioning

confidence: 96%

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Lead-Free Cs₂TeX₆ (X = Cl, Br, and I) Perovskite Microcrystals with High Stability for Efficient Photocatalytic CO₂ Reduction

et al. 2022

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“…The redox potential −0.72 V (vs NHE) was negative compared with E(CO 2 /CO) = −0.53 V (vs NHE) and E(CO 2 /CH 4 ) = −0.24 V (vs NHE). [38,39] Therefore, the Ni 7 Co 3 -GR catalyst has suitable CO 2 reduction potentials. In addition, we performed XPS valence band analysis (Figure 6d) and determined that the valence band position of Ni 7 Co 3 -GR was ≈1.63 eV.…”

Section: Photocatalytic Co 2 Reduction Performancementioning

confidence: 99%

Ni–Co Bimetallic Hydroxide Nanosheet Arrays Anchored on Graphene for Adsorption‐Induced Enhanced Photocatalytic CO₂ Reduction

Wang

Chen

et al. 2022

Advanced Materials

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Photocatalytic CO2 reduction can be implemented to use CO2, a greenhouse gas, as a resource in an energy‐saving and environmentally friendly way, in which suitable catalytic materials are required to achieve high‐efficiency catalysis. Insufficient accessible active sites on the catalyst surface and inhibited electron transfer severely limit the photocatalytic performance. Therefore, porous aerogels are constructed from composites comprising different ratios of Ni–Co bimetallic hydroxide (NixCoy) grown on reduced graphene oxide (GR) into a hierarchical nanosheet‐array structure using a facile in situ growth method. Detailed characterization shows that this structure exposes numerous active sites for enhanced adsorption‐induced photocatalytic CO2 reduction. Moreover, under the synergistic effect of Ni–Co bimetallic hydroxide, the CO2 adsorption capacity as well as charge‐carrier separation and transfer are excellent. As a result, the Ni7Co3–GR catalyst exhibits highly improved catalytic performance when compared with recently reported values, with a high CO release rate of 941.5 µmol h−1 g−1 and a selectivity of 96.3% during the photocatalytic reduction of CO2. This work demonstrates a new strategy for designing nanocomposites with abundant active sites structures.

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“…Up to now, many p-type semiconductor photocathodes have been studied for CO 2 reduction, such as p-Si, , ZnTe, p-GaP, InP, CuFe 2 O 4 , CuO, and Cu 2 O. , Among them, Cu 2 O is one of the most promising photocathode candidates for PEC CO 2 reduction reaction (CO 2 RR) with high carrier mobility, narrow band gap (2–2.2 eV) for harvesting visible light, and suitable band alignment for the CO 2 RR. , However, the bare Cu 2 O photocathode is susceptible to severe photocorrosion caused by accumulation of photogenerated electrons or holes, and the wide product distribution resulting in poor overall selectivity of Cu 2 O . Aiming at the problem of photogenerated charge recombination and accumulation in Cu 2 O photocathode, various strategies have been proposed to effectively improve its charge separation efficiency, such as nanostructuralization, forming defects, constructing Schottky junctions, building heterojunctions, and so on. − Among the above strategies, loading metal-based cocatalysts on the semiconductor surface to form a Schottky junction is an effective strategy to promote charge separation. When the metal is in contact with the semiconductor, the energy band bending occurs at the interface between the metal and the semiconductor, and the photogenerated electrons flow from the conduction band (CB) of the semiconductor into the metal .…”

Section: Introductionmentioning

confidence: 99%

Core–Shell In/Cu₂O Nanowires Schottky Junction for Enhanced Photoelectrochemical CO₂Reduction under Visible Light

Wang

Zhang

Liu

et al. 2022

Ind. Eng. Chem. Res.

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Photoelectrochemical (PEC) CO2 reduction into chemical fuels is a promising strategy to alleviate the energy and environmental crisis. However, it remains a challenge to design efficient photocathodes for PEC CO2 reduction. Here, we constructed Cu2O-indium (In) core–shell nanowires Schottky junction assisted by physical vapor deposition to boost PEC CO2 reduction. The research of charge transport kinetics shows that the construction of Schottky junction effectively promotes the transfer and separation of photogenerated electrons. In addition, the introduction of In improves the catalytic activity of the Cu2O, and the CO yield reaches 75.94 μmol cm–2 h–1 at −0.7 V vs RHE. The In/Cu2O photocathode exhibits consistent Faradaic efficiency for CO (82%) over 12 h. In situ Fourier transformed infrared spectroscopy spectra results indicate that the introduction of In promotes the absorption and accumulation of COOH* intermediate, thereby promoting the release of CO. The study proposes a feasible strategy for designing and fabricating PEC CO2 reduction photocathodes with high catalytic activity to treat atmospheric CO2.

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Visible light driven photocatalytic reduction of CO2 on Au-Pt/Cu2O/ReS2 with high efficiency and controllable selectivity

Cited by 26 publications

References 61 publications

Lead-Free Cs₂TeX₆ (X = Cl, Br, and I) Perovskite Microcrystals with High Stability for Efficient Photocatalytic CO₂ Reduction

Lead-Free Cs₂TeX₆ (X = Cl, Br, and I) Perovskite Microcrystals with High Stability for Efficient Photocatalytic CO₂ Reduction

Ni–Co Bimetallic Hydroxide Nanosheet Arrays Anchored on Graphene for Adsorption‐Induced Enhanced Photocatalytic CO₂ Reduction

Core–Shell In/Cu₂O Nanowires Schottky Junction for Enhanced Photoelectrochemical CO₂Reduction under Visible Light

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Visible light driven photocatalytic reduction of CO2 on Au-Pt/Cu2O/ReS2 with high efficiency and controllable selectivity

Cited by 26 publications

References 61 publications

Lead-Free Cs2TeX6 (X = Cl, Br, and I) Perovskite Microcrystals with High Stability for Efficient Photocatalytic CO2 Reduction

Lead-Free Cs2TeX6 (X = Cl, Br, and I) Perovskite Microcrystals with High Stability for Efficient Photocatalytic CO2 Reduction

Ni–Co Bimetallic Hydroxide Nanosheet Arrays Anchored on Graphene for Adsorption‐Induced Enhanced Photocatalytic CO2 Reduction

Core–Shell In/Cu2O Nanowires Schottky Junction for Enhanced Photoelectrochemical CO2Reduction under Visible Light

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Product

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Lead-Free Cs₂TeX₆ (X = Cl, Br, and I) Perovskite Microcrystals with High Stability for Efficient Photocatalytic CO₂ Reduction

Lead-Free Cs₂TeX₆ (X = Cl, Br, and I) Perovskite Microcrystals with High Stability for Efficient Photocatalytic CO₂ Reduction

Ni–Co Bimetallic Hydroxide Nanosheet Arrays Anchored on Graphene for Adsorption‐Induced Enhanced Photocatalytic CO₂ Reduction

Core–Shell In/Cu₂O Nanowires Schottky Junction for Enhanced Photoelectrochemical CO₂Reduction under Visible Light