Ultrasonic-assisted in-situ fabrication of BiOBr modified Bi2O2CO3 microstructure with enhanced photocatalytic performance

Liu, Cheng; Hu, Xumin; Líu, Hao

doi:10.1016/j.ultsonch.2018.02.023

Cited by 35 publications

(7 citation statements)

References 31 publications

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“…17,33 With excessive urea precursor added, a new tetragonal phase of Bi 2 O 2 CO 3 (JCPDS no. 41-1488) was indexed in 1.2N-BiOBr, [34][35][36] implying the as-prepared 1.2N-BiOBr is a two-phase hybrid, including N-doped BiOBr and Bi 2 O 2 CO 3 . This indicates that excess urea as a carbonate source can form Bi 2 O 2 CO 3 with Bi salts.…”

Section: Resultsmentioning

confidence: 99%

Nitrogen-doped BiOBr nanosheets with preferentially exposed (102) facets enhanced visible-light photoreactivity

Yang

et al. 2023

New J. Chem.

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Section: Resultsmentioning

confidence: 99%

Nitrogen-doped BiOBr nanosheets with preferentially exposed (102) facets enhanced visible-light photoreactivity

Yang

et al. 2023

New J. Chem.

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“…Ultrasonic processing has been used to process the mixtures of reaction for a suitable time. For example, Cheng et al [101] used this method for synthesizing of BiOBr/Bi2O2CO3 binary composite. Firstly, Bi2O2CO3 was synthesized by dissolving 1.4553 g of Bi (NO3)3•5H2O in 60 mL of diluted HNO3.…”

Section: Ultra-sonication Methodsmentioning

confidence: 99%

A Review of BiOBr-Based Photocatalysts for Wastewater Treatment

Mahdi,

Ebrahim

2024

IJHT

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Semiconductor based photo-catalysts which was an efficient process to treat water and wastewater. There are various techniques can be used for enhancement of photo-catalytic properties such as element rich strategy, defect control and facet engineering. Many methods were used for manufacturing of BiOBr, including ion-exchange method, solvothermal method, wet-chemical method, ultra-sonication method, co-precipitation method and hydrothermal method. Various operational parameters have such as initial pH of solution, catalyst dosage and inorganic ions have been employed to show their roles on the photo-degradation efficiency of pollutants. Elemental doping and coupled semiconductors are the widely using methods for enhancing BiOBr performance. It was concluded that the binary and ternary composites have the ability to enhancement the photo-catalytic activity and increased the degradation efficiency more than 50% compared with pure BiOBr. According to suitable band structure, bismuth bromide oxide is a promising candidate to treat wastewater efficiently by photo-catalytic technique.

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“…There have been many methods to solve the problem of organic dye contamination in environment, such as adsorption [ 2 , 3 ], membrane separation [ 4 , 5 ], biological decomposition [ 6 ], chemical oxidation [ 7 ], electrocatalysis [ 8 ] and photocatalysis [ 9 , 10 ] decomposition. Among them, the use of solar photocatalysis for the degradation of organic pollutants is considered one of the most promising and efficient strategies [ 11 , 12 ].…”

Section: Introductionmentioning

confidence: 99%

Hydrothermal Synthesis of MoS2/SnS2 Photocatalysts with Heterogeneous Structures Enhances Photocatalytic Activity

Pan

Liu

et al. 2023

Materials

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The use of solar photocatalysts to degrade organic pollutants is not only the most promising and efficient strategy to solve pollution problems today but also helps to alleviate the energy crisis. In this work, MoS2/SnS2 heterogeneous structure catalysts were prepared by a facile hydrothermal method, and the microstructures and morphologies of these catalysts were investigated using XRD, SEM, TEM, BET, XPS and EIS. Eventually, the optimal synthesis conditions of the catalysts were obtained as 180 °C for 14 h, with the molar ratio of molybdenum to tin atoms being 2:1 and the acidity and alkalinity of the solution adjusted by hydrochloric acid. TEM images of the composite catalysts synthesized under these conditions clearly show that the lamellar SnS2 grows on the surface of MoS2 at a smaller size; high-resolution TEM images show lattice stripe distances of 0.68 nm and 0.30 nm for the (002) plane of MoS2 and the (100) plane of SnS2, respectively. Thus, in terms of microstructure, it is confirmed that the MoS2 and SnS2 in the composite catalyst form a tight heterogeneous structure. The degradation efficiency of the best composite catalyst for methylene blue (MB) was 83.0%, which was 8.3 times higher than that of pure MoS2 and 16.6 times higher than that of pure SnS2. After four cycles, the degradation efficiency of the catalyst was 74.7%, indicating a relatively stable catalytic performance. The increase in activity could be attributed to the improved visible light absorption, the increase in active sites introduced at the exposed edges of MoS2 nanoparticles and the construction of heterojunctions opening up photogenerated carrier transfer pathways and effective charge separation and transfer. This unique heterostructure photocatalyst not only has excellent photocatalytic performance but also has good cycling stability, which provides a simple, convenient and low-cost method for the photocatalytic degradation of organic pollutants.

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Ultrasonic-assisted in-situ fabrication of BiOBr modified Bi2O2CO3 microstructure with enhanced photocatalytic performance

Cited by 35 publications

References 31 publications

Nitrogen-doped BiOBr nanosheets with preferentially exposed (102) facets enhanced visible-light photoreactivity

Nitrogen-doped BiOBr nanosheets with preferentially exposed (102) facets enhanced visible-light photoreactivity

A Review of BiOBr-Based Photocatalysts for Wastewater Treatment

Hydrothermal Synthesis of MoS2/SnS2 Photocatalysts with Heterogeneous Structures Enhances Photocatalytic Activity

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