Defective crystal plane-oriented induced lattice polarization for the photocatalytic enhancement of ZnO

Bai, Xiaojuan; Sun, Boxuan; Wang, Xuyu; Zhang, Tianshuo; Hao, Qiang; Ni, Bing‐Jie; Zong, Ruilong; Zhang, Ziyang; Zhang, Xiaoran; Li, Haiyan

doi:10.1039/c9ce01966a

Cited by 18 publications

(5 citation statements)

References 48 publications

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“…In practice, the effect of the (101) facet in enhancing the performance has been reported. 29,30 XPS spectra of the ZnO nano-bullets were deconvoluted to reveal the chemical bonding information. The high-resolution scan of the Zn 2p spectrum (Fig.…”

Section: Resultsmentioning

confidence: 99%

Facile synthesis of ZnO nanobullets by solution plasma without chemical additives

et al. 2021

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Section: Resultsmentioning

confidence: 99%

Facile synthesis of ZnO nanobullets by solution plasma without chemical additives

et al. 2021

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“…Conduction band electrons are also responsible for producing some of the reactive oxygen species needed for photodegradation. In addition to that, some other free radicals such as oxides, hydroxyl, and other non-harmful degradation products are released [111]. The valance electrons are excited to the conduction band by the crossing energy bandgap due to the incidental photon energy (hυ), and further oxidation and reduction reactions took place to obtain the CO 2 and H 2 O as a non-harmful degradation output.…”

Section: Photocatalytic Mechanism and Applicationsmentioning

confidence: 99%

Review of Recent Developments in the Fabrication of ZnO/CdS Heterostructure Photocatalysts for Degradation of Organic Pollutants and Hydrogen Production

Nadikatla¹,

Chintada²,

Gurugubelli³

et al. 2023

Molecules

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Researchers have recently paid a lot of attention to semiconductor photocatalysts, especially ZnO-based heterostructures. Due to its availability, robustness, and biocompatibility, ZnO is a widely researched material in the fields of photocatalysis and energy storage. It is also environmentally beneficial. However, the wide bandgap energy and quick recombination of the photoinduced electron–hole pairs of ZnO limit its practical utility. To address these issues, many techniques have been used, such as the doping of metal ions and the creation of binary or ternary composites. Recent studies showed that ZnO/CdS heterostructures outperformed bare ZnO and CdS nanostructures in terms of photocatalytic performance when exposed to visible light. This review largely concentrated on the ZnO/CdS heterostructure production process and its possible applications including the degradation of organic pollutants and hydrogen evaluation. The importance of synthesis techniques such as bandgap engineering and controlled morphology was highlighted. In addition, the prospective uses of ZnO/CdS heterostructures in the realm of photocatalysis and the conceivable photodegradation mechanism were examined. Lastly, ZnO/CdS heterostructures’ challenges and prospects for the future have been discussed.

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“…The mixture then heated at 400 °C in nitrogen atmoshere for 70 min with heating rate of 5 °C min À 1 . In another study, ZnO nanosheets with oxygen vacancies for degrdeation of different dyes (rhodamine blue, methyl orange, and AO7) were fabricated by annealing ZnO in 3 % hydrogen at 300 °C for 1 h. [62] Li et al [63] found that the optimum hydrogen annealing temperature to fabricate ZnO with oxygen vacancies during the temperature-programmed reduction process was 380 °C. They also found that the ZnO (101) plane created more oxygen vacancies compare with (100) plane.…”

Section: Strategies To Create Oxygen Vacanciesmentioning

confidence: 99%

“…In another study, ZnO nanosheets with oxygen vacancies for degrdeation of different dyes (rhodamine blue, methyl orange, and AO7) were fabricated by annealing ZnO in 3 % hydrogen at 300 °C for 1 h [62] . Li et al [63] . found that the optimum hydrogen annealing temperature to fabricate ZnO with oxygen vacancies during the temperature‐programmed reduction process was 380 °C.…”

Section: Self‐doping Approachmentioning

confidence: 99%

Strategies to Enhance ZnO Photocatalyst's Performance for Water Treatment: A Comprehensive Review

Hezam

Drmosh

Ponnamma

et al. 2022

The Chemical Record

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Despite the photocatalytic organic pollutant degradation using ZnO started in 1910–1911, many challenges are still ahead, and several critical issues have to be addressed. Large band gap, and short life‐time of photogenerated electrons and holes are critical issues negatively affect the photocatalytic activity of ZnO. Various approaches have been introduced to overcome these issues including intrinsic doping, extrinsic doping, and heterostructure. This review introduces unique and deep insights into tuning of the photocatalytic activity of ZnO. It starts by description of how to tune the photocatalytic activity of pristine ZnO through tuning its morphology, surface area, exposed face, and intrinsic defects. Afterward, the review explains how the Z‐scheme approach succeed to address the redox weakened issue of heterojunction approach. In general, this review provides a clear image that helps the researcher to tune the photocatalytic activity of pristine ZnO and its heterostructure.

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Defective crystal plane-oriented induced lattice polarization for the photocatalytic enhancement of ZnO

Abstract: The mechanism of the photocatalytic reaction of defective ZnO systems was determined.

Cited by 18 publications

References 48 publications

Facile synthesis of ZnO nanobullets by solution plasma without chemical additives

Facile synthesis of ZnO nanobullets by solution plasma without chemical additives

Review of Recent Developments in the Fabrication of ZnO/CdS Heterostructure Photocatalysts for Degradation of Organic Pollutants and Hydrogen Production

Strategies to Enhance ZnO Photocatalyst's Performance for Water Treatment: A Comprehensive Review

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