La2Sn2O7 enhanced photocatalytic CO2 reduction with H2O by deposition of Au co-catalyst

Chen, Shuang; Pan, Bao; Zeng, Longquan; Luo, Shijian; Wang, Xuxu

doi:10.1039/c7ra00765e

Cited by 82 publications

(28 citation statements)

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“…Modication of band structure in a photocatalyst is fundamentally related to interruption or reduction in the recombination opportunities through the photocatalytic progression. [34][35][36][37][38][39][40] Fig. 3 shows the PL spectra of pure and co-doped BFO samples.…”

Section: Results Analysis and Discussionmentioning

confidence: 99%

Rationally designed La and Se co-doped bismuth ferrites with controlled bandgap for visible light photocatalysis

et al. 2019

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Section: Results Analysis and Discussionmentioning

confidence: 99%

Rationally designed La and Se co-doped bismuth ferrites with controlled bandgap for visible light photocatalysis

et al. 2019

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“…They contained two strong photoelectron peaks, and their analogous shake-up peaks were positioned a few electron volts higher in binding energies. The photoelectron peaks conforming to La-3d 3/2 and La-3d 3/2 were observed at around 853.70 and 836.90 eV, with a spin-orbit splitting of 16.80 eV and shake-up lines situated at 840.2 and 857.3 eV, respectively [56]. The Fe oxidation states are shown in Figure 4b.…”

Section: Resultsmentioning

confidence: 99%

Effect of Graphene Oxide Nano-Sheets on Structural, Morphological and Photocatalytic Activity of BiFeO3-Based Nanostructures

Irfan

Liang

et al. 2019

Nanomaterials

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Photocatalysts are widely used for the elimination of organic contaminants from waste-water and H2 evaluation by water-splitting. Herein, the nanohybrids of lanthanum (La) and selenium (Se) co-doped bismuth ferrites with graphene oxide were synthesized. A structural analysis from X-ray diffraction confirmed the transition of phases from rhombohedral to the distorted orthorhombic. Scanning electron microscopy (SEM) revealed that the graphene nano-sheets homogenously covered La–Se co-doped bismuth ferrites nanoparticles, particularly the (Bi0.92La0.08Fe0.50Se0.50O3–graphene oxide) LBFSe50-G sample. Moreover, the band-gap nanohybrids of La–Se co-doped bismuth ferrites were estimated from diffuse reflectance spectra (DRS), which showed a variation from 1.84 to 2.09 eV, because the lowering of the band-gap can enhance photocatalytic degradation efficiency. Additionally, the photo-degradation efficiencies increased after the incorporation of graphene nano-sheets onto the La–Se co-doped bismuth ferrite. The maximum degradation efficiency of the LBFSe50-G sample was up to 80%, which may have been due to reduced band-gap and availability of enhanced surface area for incoming photons at the surface of the photocatalyst. Furthermore, photoluminescence spectra confirmed that the graphene oxide provided more electron-capturing sites, which decreased the recombination time of the photo-generated charge carriers. Thus, we can propose that the use of nanohybrids of La–Se co-doped bismuth ferrite with graphene oxide nano-sheets is a promising approach for both water-treatment and water-splitting, with better efficiencies of BiFeO3.

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“…For example, TiO 2 has been considered as one of the most popular semiconductors applied to photocatalysis with prestigious advantages, including easy availability, low toxicity, outstanding chemical stability, and unique optical and electronic properties, and a recently published review on TiO 2 ‐based photocatalysts for CO 2 reduction is available 54 . Nevertheless, because of inefficient solar energy utilization substantiated by the wide bandgap, researchers have employed various methods to improve the activity of such photocatalysts, including metal or non‐metal doping, 40,41,55‐61 alloying, 42,51‐53 facet engineering, 62‐65 nanostructure tailoring, 13,40,46,66,67 surface defect engineering, 43,68,69 and p‐n heterojunction or Z‐scheme system constructing 44,45,47‐50,70‐74 . In general, these methods all aim at either improving the separation efficiency of photogenerated electron/hole pairs, namely prolonging the lifespan of electrons for CO 2 reduction, or creating more catalytically active sites.…”

Section: Introductionmentioning

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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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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La₂Sn₂O₇ enhanced photocatalytic CO₂ reduction with H₂O by deposition of Au co-catalyst

Abstract: La2Sn2O7 (LSO) micro/nanospheres, synthesized by a hydrothermal method, exhibited photocatalytic performance for CO2 reduction.

Cited by 82 publications

References 45 publications

Rationally designed La and Se co-doped bismuth ferrites with controlled bandgap for visible light photocatalysis

Rationally designed La and Se co-doped bismuth ferrites with controlled bandgap for visible light photocatalysis

Effect of Graphene Oxide Nano-Sheets on Structural, Morphological and Photocatalytic Activity of BiFeO3-Based Nanostructures

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

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La2Sn2O7 enhanced photocatalytic CO2 reduction with H2O by deposition of Au co-catalyst

Abstract: La2Sn2O7 (LSO) micro/nanospheres, synthesized by a hydrothermal method, exhibited photocatalytic performance for CO2 reduction.

Cited by 82 publications

References 45 publications

Rationally designed La and Se co-doped bismuth ferrites with controlled bandgap for visible light photocatalysis

Rationally designed La and Se co-doped bismuth ferrites with controlled bandgap for visible light photocatalysis

Effect of Graphene Oxide Nano-Sheets on Structural, Morphological and Photocatalytic Activity of BiFeO3-Based Nanostructures

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

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La₂Sn₂O₇ enhanced photocatalytic CO₂ reduction with H₂O by deposition of Au co-catalyst

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