Biomass Assisted Synthesis of 3D Hierarchical Structure BiOX(X Cl, Br)-(CMC) with Enhanced Photocatalytic Activity

Liu, Min Yi; Zheng, Yi; Song, Xu Chun

doi:10.1166/jnn.2019.16826

Cited by 10 publications

(4 citation statements)

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“…It has gained plenty of successes for its outstanding advantages of low agglomeration, better product purity, higher dispersion and low cost in energy [65]. Different kinds of BCPs can be attained by the hydrothermal/solvothermal technique [36,[45][46][47][48][49][50][51][52][53].…”

Section: Hydrothermal/solvothermal Methodsmentioning

confidence: 99%

“…The synthesis route for BCPs has great influence on photocatalytic performance. Various efficient methods and approaches have been reported for the synthesis of BCPs (summarized in Table 1), including sol-gel [28][29][30][31][32]43,44], hydrothermal/solvothermal [36,38,39,[45][46][47][48][49][50][51][52][53], ultrasound [40,41,54,55], calcination [34,[56][57][58] and in situ methods [35,59], etc.…”

Section: Synthesismentioning

confidence: 99%

“…The participation of biochar in the synthesis process can change the structure, morphology and light absorption efficiency of the composites, leading to an enhanced performance. The functional groups existed in the biochar may also play pivotal roles in the reaction and further promote the photocatalytic ability [52]. Contaminants in wastewater can be removed based on different mechanisms, which involve: adsorption ability, narrowing the band gap, facilitating the electron transport, suppression of electron/hole charges recombination, π-π stacking interactions, electrostatic interaction, reducing the photocorrosion of TiO 2 , etc.…”

Section: Mechanismmentioning

confidence: 99%

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Recent Progress in Biochar-Based Photocatalysts for Wastewater Treatment: Synthesis, Mechanisms, and Applications

Cui

Zhang

et al. 2020

Applied Sciences

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Biochar (BC) is a carbon-rich material produced from pyrolysis of biomass. In addition to its low toxicity, environmental compatibility, and low cost, BC has the desired advantages of well-developed mesoporous structure and abundant surface functional groups. In recent years, BC-based photocatalysts (BCPs) have played a significant role in many environmental fields. In this paper, we highlight the current progress and several exciting results of BCPs by focusing on their synthesis, characterization, mechanisms, and applications in wastewater treatment. Details on various preparation methods include sol–gel, hydrothermal/solvothermal, ultrasound, calcination, and in situ methods are summarized and discussed. The underlying mechanisms and the applications of BCPs for different semiconductors are reviewed. Furthermore, some future trends and potentials are outlined.

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Section: Hydrothermal/solvothermal Methodsmentioning

confidence: 99%

Section: Synthesismentioning

confidence: 99%

Section: Mechanismmentioning

confidence: 99%

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Recent Progress in Biochar-Based Photocatalysts for Wastewater Treatment: Synthesis, Mechanisms, and Applications

Cui

Zhang

et al. 2020

Applied Sciences

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“…Chen et al produced flower-like BiOCl x Br 1−x compounds and studied their capability for photocatalytic oxidation of NO under visible light [ 21 ]. These 3D hierarchical structures have the virtues of: (1) large surface area, which provides plenty of active sites for photocatalytic reactions; (2) unique porous structure, which facilitates the diffusion and transportation of reactants and products; (3) anti-agglomeration effect, which prohibits the aggregation of nanoparticles under various conditions; (4) large light absorption efficiency, which is benefited from the multiple light reflections inside the complex structure [ 23 , 24 , 25 ].…”

Section: Introductionmentioning

confidence: 99%

Preparation of Porous Ellipsoidal Bismuth Oxyhalide Microspheres and Their Photocatalytic Performances

Luo

Zhang

et al. 2022

Materials

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Well-dispersed and uniform porous ellipsoidal-shaped bismuth oxyhalides (nominal composition: 80%BiOCl/20%BiOI) microspheres were obtained by a facile solvothermal method, in which process the use of polyvinylpyrrolidone (PVP) as template agent was found to be crucial. At 150 °C, elliptical porous particles with a particle size of 0.79 μm were formed. Instead of forming solid solutions, the study of X-ray diffraction (XRD) and high-resolution transmission electron microscopy (HRTEM) shows that the prepared 80%BiOCl/20%BiOI microspheres are composite of BiOCl and BiOI in nature and the obtained crystallite size is about 5.6 nm. The optical bandgap of 80%BiOCl/20%BiOI was measured to be 2.93 eV, which is between the bandgap values of BiOCl and BiOI. The 80%BiOCl/20%BiOI microspheres were able to decompose various organic dyes (rhodamine B-RhB, methyl orange-MO, methylene blue-MB, methyl violet-MV) under an illuminated condition with the degradation rate in the order of RhB > MB > MV > MO, and 98% of RhB can be degraded in 90 min. Radical scavenger tests showed that photogenerated holes are the main active species for the photocatalytic decomposition of all of the tested organic dyes. Our results show that the obtained porous ellipsoidal-shaped 80%BiOCl/20%BiOI microspheres are promising for the degradation of various organic pollutants under the illumination of visible light.

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Biochar-Based Nanocomposites for the Removal of Organic Environmental Contaminants

Kumar

Dabodiya

Duraisamy

2023

Advances in Science, Technology &Amp; Innovation

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Biomass Assisted Synthesis of 3D Hierarchical Structure BiOX(X Cl, Br)-(CMC) with Enhanced Photocatalytic Activity

Cited by 10 publications

References 0 publications

Recent Progress in Biochar-Based Photocatalysts for Wastewater Treatment: Synthesis, Mechanisms, and Applications

Recent Progress in Biochar-Based Photocatalysts for Wastewater Treatment: Synthesis, Mechanisms, and Applications

Preparation of Porous Ellipsoidal Bismuth Oxyhalide Microspheres and Their Photocatalytic Performances

Biochar-Based Nanocomposites for the Removal of Organic Environmental Contaminants

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