Synthesis of novel magnetically separable Fe3O4/Bi12O17Cl2 photocatalyst with boosted visible-light photocatalytic activity

Fang, Kexin; Shi, Lei; Yao, Lizhu; Cui, Liang

doi:10.1016/j.materresbull.2020.110888

Cited by 54 publications

(7 citation statements)

References 36 publications

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“…For analyzing the active species during photocatalytic process, hydroxyl radicals ( • OH), superoxide radicals (O2 •− ), photogenerated electrons (e − ), and holes (h + ) were investigated by adding isopropanol (IPA), 1,4-benzoquinone (BQ), tert-butanol (TBA), and ethylenediaminetetraacetic acid disodium salt (EDTA), respectively [37,38]. The method was similar to the photocatalytic degradation test previously described except that 1.0 mmol of scavenger was added.…”

Section: Analysis Of Photocatalytic Mechanismmentioning

confidence: 99%

“…•− ), and photogenerated electrons (e − ). To analyze the mechanism of the synthesized RGO/BiOCl/TiO 2 nanocomposites for catalytic degradation of organic dyes, IPA, TBA, BQ, and EDTA were used as scavengers for • OH, e − , O 2 •− , and h + , respectively [37,38]. As displayed in Figure 10b, when IPA or TBA is added in the degradation system, the degradation efficiency will be slightly reduced, which is 96.1% and 95.6%, respectively.…”

Section: Photocatalytic Mechanismmentioning

confidence: 99%

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Novel Ternary Heterogeneous Reduction Graphene Oxide (RGO)/BiOCl/TiO2 Nanocomposites for Enhanced Adsorption and Visible-Light Induced Photocatalytic Activity toward Organic Contaminants

et al. 2020

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Herein, we describe a simple and cost-effective design for the fabrication of a novel ternary RGO/BiOCl/TiO2 nanocomposites through a simple hydrothermal process. The prepared nanocomposites were characterized by Fourier transform infrared spectroscopy (FT-IR), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), X-ray diffraction (XRD), UV–vis diffuse reflectance spectroscopy (UV–vis DRS) and N2 adsorption–desorption analysis. Organic contaminants—such as methylene blue (MB), methyl orange (MO), rhodamine B (RhB) and amido black-10B (AB-10B)—were employed as the target pollutants to evaluate the adsorption capacity and photocatalytic activity of RGO/BiOCl/TiO2 nanocomposites. From experimental data, it was also found that the amount of TiO2 impressed the photocatalytic performance, and the nanocomposites with 10% of TiO2 showed the best photocatalytic activity. The improved photocatalytic performance may be mainly due to the narrow band gap, and the charge separation and migration of RGO. Moreover, good recyclability was obtained from RGO/BiOCl/TiO2 nanocomposites, and scavenger tests indicated that photogenerated holes were the main active species in the reaction system. Therefore, the prepared RGO/BiOCl/TiO2 nanocomposites have broad applications foreground in pollutants purification.

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Section: Analysis Of Photocatalytic Mechanismmentioning

confidence: 99%

Section: Photocatalytic Mechanismmentioning

confidence: 99%

Novel Ternary Heterogeneous Reduction Graphene Oxide (RGO)/BiOCl/TiO2 Nanocomposites for Enhanced Adsorption and Visible-Light Induced Photocatalytic Activity toward Organic Contaminants

et al. 2020

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“…This endeavour led to the synthesis and application of bismuth-rich complex oxyhalides (Bi x O y X z ) photocatalyst material [ 1 ]. Bi 12 O 17 Cl 2 is a notable member of this complex oxyhalide family [ 2 ], possessing excellent, adjustable bandgap energy [ 3 ], and visible light or infrared activity [ 4 ], a benign/non-toxic nature [ 5 ]. However, the quick recombination of photogenerated charge carriers (e − and h + ) as they are produced limits the capacity of the material to oxidize target substrates [ 6 ].…”

Section: Introductionmentioning

confidence: 99%

Self-assembled micro and nano rod-shaped porphyrin@Bi12O17Cl2 composite as an efficient photocatalyst for degradation of organic contaminants

Ogbeifun,

Tichapondwa,

Chirwa

2023

Discover Nano

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Bi12O17Cl2 is a potential photocatalyst in practical applications due to its excellent photostability, visible light activity, and competitive bandgap energy. However, the fast recombination of photogenerated charge carriers makes it impractical for pollution mitigation. Recently, aggregated porphyrins have emerged as photosensitizers in light-dependent applications such as photocatalysis. Although Bi12O17Cl2 and porphyrin can function as separate photocatalysts, their photocatalytic properties in terms of visible light adsorption, charge separation and transport, can be improved when they are combined to form heterostructure. In this study, rod-shaped aggregated 5,10,15, 20-Tetrakis (4-carboxyphenyl) porphyrin was synthesized by CTAB-assisted, self-assembly strategy and Bi12O17Cl2 by a facile microwave method. The porphyrin and Bi12O17Cl2 were combined to generate a series of x%Porphyrin@Bi12O17Cl2 having 0.02% wt., 0.1% wt., 0.4% wt., 1% wt. and 10% wt. as compositions of porphyrin. The materials’ photocatalytic degradation efficiency was tested on Rhodamine B dye as a representative pollutant. The best and worst performances were reported for 1%Porphyrin@Bi12O17Cl2 and 10%Porphyrin@Bi12O17Cl2, respectively, which are 3.1 and 0.5 times increases in efficiency compared to pure Bi12O17Cl2. From the radical trapping experiment, electrons and superoxide were the dominant reactive species in the degradation process. The enhanced photocatalytic capability of the materials was attributed to the photosensitizing property of porphyrin and the heterojunction formation, which promotes the separation of photogenerated charge carriers. A plausible step-scheme (S-scheme) was proposed for the photocatalytic degradation mechanism. The S-scheme provided the high redox potential of the photogenerated charge carriers. The findings herein offer a new option for improving the photocatalytic performance of Bi12O17Cl2 for environmental applications through the photosensitization strategy. Graphical abstract

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“…The photocatalysis technique has undergone ultra-rapid development during the past several decades, exhibiting unique merits including stable redox ability, excellent renewability, and a green and sustainable nature, and has been widely applied in many fields such as photo-synthesis, pollutant treatment, and other chemical or energy-related processes. 19–21 Recently, photocatalysis has attracted much interest for using solar energy to convert chemical energy, such as in H 2 production, 22 degradation of various kinds of pollution, 23 H 2 O 2 generation, and CO 2 reduction.…”

Section: Introductionmentioning

confidence: 99%

Magnetic Lu₂Cu₂O₅-based ceramic nanostructured materials fabricated by a simple and green approach for an effective photocatalytic degradation of organic contamination

et al. 2021

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Synthesis of novel magnetically separable Fe3O4/Bi12O17Cl2 photocatalyst with boosted visible-light photocatalytic activity

Cited by 54 publications

References 36 publications

Novel Ternary Heterogeneous Reduction Graphene Oxide (RGO)/BiOCl/TiO2 Nanocomposites for Enhanced Adsorption and Visible-Light Induced Photocatalytic Activity toward Organic Contaminants

Novel Ternary Heterogeneous Reduction Graphene Oxide (RGO)/BiOCl/TiO2 Nanocomposites for Enhanced Adsorption and Visible-Light Induced Photocatalytic Activity toward Organic Contaminants

Self-assembled micro and nano rod-shaped porphyrin@Bi12O17Cl2 composite as an efficient photocatalyst for degradation of organic contaminants

Magnetic Lu₂Cu₂O₅-based ceramic nanostructured materials fabricated by a simple and green approach for an effective photocatalytic degradation of organic contamination

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Synthesis of novel magnetically separable Fe3O4/Bi12O17Cl2 photocatalyst with boosted visible-light photocatalytic activity

Cited by 54 publications

References 36 publications

Novel Ternary Heterogeneous Reduction Graphene Oxide (RGO)/BiOCl/TiO2 Nanocomposites for Enhanced Adsorption and Visible-Light Induced Photocatalytic Activity toward Organic Contaminants

Novel Ternary Heterogeneous Reduction Graphene Oxide (RGO)/BiOCl/TiO2 Nanocomposites for Enhanced Adsorption and Visible-Light Induced Photocatalytic Activity toward Organic Contaminants

Self-assembled micro and nano rod-shaped porphyrin@Bi12O17Cl2 composite as an efficient photocatalyst for degradation of organic contaminants

Magnetic Lu2Cu2O5-based ceramic nanostructured materials fabricated by a simple and green approach for an effective photocatalytic degradation of organic contamination

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Magnetic Lu₂Cu₂O₅-based ceramic nanostructured materials fabricated by a simple and green approach for an effective photocatalytic degradation of organic contamination