Combustion synthesis of Bi/BiOCl composites with enhanced electron–hole separation and excellent visible light photocatalytic properties

Gao, Meichao; Zhang, Dafeng; Pu, Xipeng; Ding, Keying; Li, Hong; Zhang, Tongtong; Ma, Huiyan

doi:10.1016/j.seppur.2015.06.002

Cited by 50 publications

(13 citation statements)

References 51 publications

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“…All three curves show the significant decrease in the TOC value during 30 minutes of the adsorption‐desorption equilibrium process, which can be due to the adsorption after the addition of photocatalyst. Moreover, for all three molecules, the degradation rates based on TOC are lower than that of C/C 0 based on absorption, and this means that organic contaminates were degraded to colorless and nontoxic intermediates and CO 2 and H 2 O . For the MB and MO, a final increase of TOC can be observed, which can be attributed to the desorption of molecules from the surface of photocatalyst.…”

Section: Resultsmentioning

confidence: 89%

Facial synthesis of a novel Ag₄V₂O₇/g‐C₃N₄ heterostructure with highly efficient photoactivity

et al. 2019

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A novel Ag 4 V 2 O 7 /g-C 3 N 4 heterostructure was synthesized by a facial etching method in ammonia solution using Ag 2 VO 2 PO 4 /g-C 3 N 4 as a self-sacrifice precursor. With the concentration of ammonia solution increasing from 0.05 to 0.2 M, phase transformation took place, described as: exhibited dramatically improved activity for the degradation of methylene blue (MB), methyl orange (MO) and imidacloprid under visible light irradiation. When etched with 0.15 M ammonia solution, an Ag 4 V 2 O 7 /g-C 3 N 4 heterostructure was obtained that exhibited the highest photoactivity. This photocatalyst was nearly 9.1, 3.0, and 24.3 times more efficient than pristine Ag 2 VO 2 PO 4 /g-C 3 N 4 for degradation of MB, MO and imidacloprid, respectively.The excellent photocatalytic performance can be ascribed to the as-obtained welldefined Ag 4 V 2 O 7 /g-C 3 N 4 heterojunction, which improves the separation and transfer efficiency and prolongs the lifetime of photoinduced charges. In addition, the stability and dominant radicals were investigated.

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Section: Resultsmentioning

confidence: 89%

Facial synthesis of a novel Ag₄V₂O₇/g‐C₃N₄ heterostructure with highly efficient photoactivity

et al. 2019

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“…Compared with BiOBr, new peak at 27.2° (indicated by asterisk) appeared in the XRD patterns of Bi/BiOBr/C and Bi/BiOBr:Yb,Er/C, and can be indexed to the metallic Bi (JCPDS No. 85‐1329), which suggests that partial Bi 3+ ions were reduced to metallic Bi . No other peaks of the crystalline phases about Er and Yb or others impurity phases were found.…”

Section: Resultsmentioning

confidence: 93%

“…To investigate the active species during the photocatalytic reaction under visible and NIR irradiation, a series of trapping experiments were carried out in the presence of Bi/BiOBr:Yb,Er/C, using IPA, BZQ, and AO as ·OH, ·O 2 − , and h + quenchers, respectively . As shown in Figure A, in the presence of 1 mmol L −1 BZQ as a ·O 2 − scavenger, the photodegradation performance of IM over Bi/BiOBr:Yb,Er/C was obviously decreased under visible light irradiation.…”

Section: Resultsmentioning

confidence: 99%

One‐pot combustion synthesis and efficient broad spectrum photoactivity of Bi/BiOBr:Yb,Er/C photocatalyst

Liang

Zhang

et al. 2018

J Am Ceram Soc

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A highly efficient broad spectrum responsive Bi/BiOBr:Yb,Er/C ternary composite was synthesized by a simple one-pot combustion method using nitrates and citric acid as raw materials. Experimental results show that Er 3+ /Yb 3+ were successfully doped into BiOBr lattice, and metallic Bi nanoparticles and carbon species were formed simultaneously. Compared with pure BiOBr and Bi/BiOBr/C, as-synthesized Bi/BiOBr:Yb,Er/C ternary photocatalyst is highly responsive in the UV-visible-NIR range, and possesses the best photodegradation performance for Rhodamine B, phenol, and imidacloprid under visible, NIR, or solar light irradiation, which can be attributed to the synergetic effects of surface plasma resonance of metallic Bi, up-conversion transition of Er 3+ and heterojunctions (Bi/BiOBr, Bi/C, and BiOBr/C). Moreover, a plausible mechanism was given, the main active species, and photostability of samples were studied. The solar light photoactivity and influences of pH value and anions (Cl À , SO 4 2À , CO 3 2À , HCO 3 À , and NO 3 À )were also investigated. This study highlights the advantages of synergetic effects of SPR, up-conversion and heterojunctions, which provides a useful guide toward the rational design of broad spectrum (UV-visible-near infrared) photocatalysts.

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“…Bi-based oxides are an important class of functional materials that are widely used in many fields [64]. For example, they are used as electronic ceramic materials (zinc oxide varistors, ceramic capacitors, ferrite magnetic materials), electrolyte materials, high-temperature superconducting materials, and materials for photoelectric conversion.…”

Section: Bi2o3-based Photocatalystmentioning

confidence: 99%

Recent Advances and Applications of Semiconductor Photocatalytic Technology

et al. 2019

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Along with the development of industry and the improvement of people’s living standards, peoples’ demand on resources has greatly increased, causing energy crises and environmental pollution. In recent years, photocatalytic technology has shown great potential as a low-cost, environmentally-friendly, and sustainable technology, and it has become a hot research topic. However, current photocatalytic technology cannot meet industrial requirements. The biggest challenge in the industrialization of photocatalyst technology is the development of an ideal photocatalyst, which should possess four features, including a high photocatalytic efficiency, a large specific surface area, a full utilization of sunlight, and recyclability. In this review, starting from the photocatalytic reaction mechanism and the preparation of the photocatalyst, we review the classification of current photocatalysts and the methods for improving photocatalytic performance; we also further discuss the potential industrial usage of photocatalytic technology. This review also aims to provide basic and comprehensive information on the industrialization of photocatalysis technology.

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Combustion synthesis of Bi/BiOCl composites with enhanced electron–hole separation and excellent visible light photocatalytic properties

Cited by 50 publications

References 51 publications

Facial synthesis of a novel Ag₄V₂O₇/g‐C₃N₄ heterostructure with highly efficient photoactivity

Facial synthesis of a novel Ag₄V₂O₇/g‐C₃N₄ heterostructure with highly efficient photoactivity

One‐pot combustion synthesis and efficient broad spectrum photoactivity of Bi/BiOBr:Yb,Er/C photocatalyst

Recent Advances and Applications of Semiconductor Photocatalytic Technology

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Combustion synthesis of Bi/BiOCl composites with enhanced electron–hole separation and excellent visible light photocatalytic properties

Cited by 50 publications

References 51 publications

Facial synthesis of a novel Ag4V2O7/g‐C3N4 heterostructure with highly efficient photoactivity

Facial synthesis of a novel Ag4V2O7/g‐C3N4 heterostructure with highly efficient photoactivity

One‐pot combustion synthesis and efficient broad spectrum photoactivity of Bi/BiOBr:Yb,Er/C photocatalyst

Recent Advances and Applications of Semiconductor Photocatalytic Technology

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Facial synthesis of a novel Ag₄V₂O₇/g‐C₃N₄ heterostructure with highly efficient photoactivity

Facial synthesis of a novel Ag₄V₂O₇/g‐C₃N₄ heterostructure with highly efficient photoactivity