Enriched surface oxygen vacancies of BiOCl boosting efficient charge separation, whole visible-light absorption, and photo to thermal conversion

Zhong, Yi; Wu, Chenglin; Feng, Yanmei; Chen, Daimei; Wang, Yuxin; Hao, Qiang; Ding, Hao

doi:10.1016/j.apsusc.2022.152656

Cited by 39 publications

(19 citation statements)

References 41 publications

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“…Two new peaks appeared at 197 and 268 eV in BiOCl and Bi 2 O 3 /BiOCl spectra could correspond to the Cl 2p and Cl 2s. It confirmed the successful introduction of Cl − [ 37 ]. For the high-resolution Bi 4f spectra in Figure 1 d, all samples displayed two spin-orbit doublet peaks of Bi 4f 7/2 (159.2 eV) and Bi 4f 5/2 (164.5 eV).…”

Section: Resultssupporting

confidence: 55%

“…A peak located at ~850 cm −1 was attributed to the stretching vibration of Bi–O–Bi bond, and a sharp peak at ~520 cm −1 was assigned to the stretching vibration of Bi–O bond [ 36 ]. With regard to the BiOCl, the Bi–O–Bi peak disappeared and a new peak appeared at ~1380 cm −1 (stretching vibration of Bi–Cl bond) [ 37 ]. The Bi 2 O 3 /BiOCl simultaneously contained the Bi–O–Bi and Bi–Cl peaks, which indicated the successful preparation of such composite material.…”

Section: Resultsmentioning

confidence: 99%

“…Such a distinctive nanosheet array structure of Bi 2 O 3 /BiOCl can devote a large surface area and provide more active sites for photocatalytic reactions [ 26 , 33 ]. The mapping images ( Figure 2 g) detected the uniform distribution of Bi, Cl and O elements on Bi 2 O 3 /BiOCl [ 37 , 44 ].…”

Section: Resultsmentioning

confidence: 99%

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Heterostructured α-Bi2O3/BiOCl Nanosheet for Photocatalytic Applications

Teng

Jin

et al. 2022

Nanomaterials

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Photocatalytic degradation of organic pollutants in wastewater is recognized as a promising technology. However, photocatalyst Bi2O3 responds to visible light and suffers from low quantum yield. In this study, the α-Bi2O3 was synthetized and used for removing Cl− in acidic solutions to transform BiOCl. A heterostructured α-Bi2O3/BiOCl nanosheet can be fabricated by coupling Bi2O3 (narrow band gap) with layered BiOCl (rapid photoelectron transmission). During the degradation of Rhodamine B (RhB), the Bi2O3/BiOCl composite material presented excellent photocatalytic activity. Under visible light irradiation for 60 min, the Bi2O3/BiOCl photocatalyst delivered a superior removal rate of 99.9%, which was much higher than pristine Bi2O3 (36.0%) and BiOCl (74.4%). Radical quenching experiments and electron spin resonance spectra further confirmed the dominant effect of electron holes h+ and superoxide radical anions ·O2− for the photodegradation process. This work develops a green strategy to synthesize a high-performance photocatalyst for organic dye degradation.

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Section: Resultssupporting

confidence: 55%

Section: Resultsmentioning

confidence: 99%

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Heterostructured α-Bi2O3/BiOCl Nanosheet for Photocatalytic Applications

Teng

Jin

et al. 2022

Nanomaterials

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Section: Applications Of Biox In Biomedicinementioning

confidence: 99%

“…104 In a similar approach, Zhong et al introduced oxygen vacancies on the surface of BiOCl nanosheets, which expanded visible light absorption, induced the obvious photothermal effect, and considerably aided effective carrier separation. 179 Furthermore, using defect engineering, Ma et al also achieved efficient photothermal conversion and maximized the utilization of light energy for antimicrobial applications. They designed BiOI nanosheets with oxygen defects and then decorated them with Bi to form composite BiOI-DE, which was applied as an antimicrobial agent.…”

Section: Reviewmentioning

confidence: 99%

Recent developments in bismuth oxyhalide-based functional nanomaterials for biomedical applications

Chen

Miao

et al. 2022

Biomater. Sci.

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Integrated Functionality of Photothermal Hydrogels and Membranes in Solar Water, Chemical, Mechanical, and Electrical Domains

Ong,

Lu,

Zhang

et al. 2024

Adv Materials Technologies

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Solar energy can be harnessed and converted into heat via the photothermal effect, which can then be utilized to drive many other reactions to produce important resources, such as water, fuel, electricity, and even mechanical actuation in a clean and sustainable manner. Hydrogels and membranes coupled with photothermal materials are particularly suitable for this purpose because they possess advantageous properties, such as porosity and adaptability. These properties allow for the introduction of diverse additives and functionalities, ensuring that photothermal systems can be customized for specific tasks, thereby enhancing their overall performance, functionality and versatility. This review aims to provide an overview of recent developments and the significance of employing photothermal hydrogels and membranes in multiple fields ranging from clean water, fuel production, electricity generation to mechanical actuation, followed by a discussion on key considerations in materials design and engineering. Finally, the review addresses the challenges and future directions of photothermal applications.

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Enriched surface oxygen vacancies of BiOCl boosting efficient charge separation, whole visible-light absorption, and photo to thermal conversion

Cited by 39 publications

References 41 publications

Heterostructured α-Bi2O3/BiOCl Nanosheet for Photocatalytic Applications

Heterostructured α-Bi2O3/BiOCl Nanosheet for Photocatalytic Applications

Recent developments in bismuth oxyhalide-based functional nanomaterials for biomedical applications

Integrated Functionality of Photothermal Hydrogels and Membranes in Solar Water, Chemical, Mechanical, and Electrical Domains

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