ZnO/Cu2O/g-C3N4 heterojunctions with enhanced photocatalytic activity for removal of hazardous antibiotics

Zhu, Yunlong; Xu, Wentao; Xu, Zhi‐Kang; Yuan, Junsheng; Zhang, Guoliang

doi:10.1016/j.heliyon.2022.e12644

Cited by 11 publications

(3 citation statements)

References 82 publications

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“…Maximum tetracycline hydrochloride was photo degraded by ZnO/g-CN nanocomposite around 100%, while bare g-CN and ZnO nanoparticles degraded around 88%, and 65% within 45 min under sunlight. Correspondingly, Zhu et al, fabricated ZnO/Cu 2 O 4 /g-CN heterojunction by a facile one-pot synthesis process for the photodegradation of chlortetracycline, tetracycline, ciprofloxacin, and oxytetracycline within 120 min (Zhu, Y. et al, 2022). Fabricated ZnO/ Cu 2 O 4 /g-CN showed photodegradation efficiency around 99.5%, 98.79%, 95.35%, and 73.53% respectively within 120 min under visible light irradiation.…”

Section: Pollutant Degradationmentioning

confidence: 99%

Recent updates on g-C3N4/ZnO-based binary and ternary heterojunction photocatalysts toward environmental remediation and energy conversion

Rana,

Dhull,

Sudhaik

et al. 2023

Nanofab

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Background: The utilization of photocatalytic materials has garnered significant consideration due to their distinctive properties and diverse applications in environmental remediation and energy conversion. In photocatalysis, several wide and narrow band gap photocatalysts have been discovered. Amongst several photocatalysts, g-C3N4 photocatalyst is becoming the interest of the research community due to its unique properties. But as a single photocatalyst, it is inherited with certain confines for instance higher photocarrier recombination rate, lower quantum yield, low specific surface area, etc. However, the heterojunction formation of g-C3N4 with other wide band gap photocatalysts (ZnO) has improved its photocatalytic properties by overcoming its limitations. Methods: The synergistic interaction amid g-C3N4 and ZnO photocatalysts enhanced optoelectrical properties superior mechanical strength and improved photocatalytic activity. The nanocomposite exhibits excellent stability, high surface area, efficient separation, and migration of photocarriers, which are advantageous for applications in photocatalytic energy conversion and environmental remediation. The g-C3N4-ZnO nanocomposite represents a material comprising g-C3N4 and ZnO photocatalysts which exhibit a broad absorption range, efficient electron-hole separation, and strong redox potential. The combination of these two distinct materials imparts enhanced properties to the resulting nanocomposite, making it suitable for various applications. Henceforth, current review, we have discussed the photocatalytic properties of g-C3N4 and ZnO photocatalysts and modification strategies to improve their photocatalytic properties. Significant Findings: This article offers an inclusive overview of the g-C3N4-ZnO-based nanocomposite, highlighting its photocatalytic properties and potential applications in several pollutant degradation and energy conversion including hydrogen production and CO2 reduction.

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Section: Pollutant Degradationmentioning

confidence: 99%

Recent updates on g-C3N4/ZnO-based binary and ternary heterojunction photocatalysts toward environmental remediation and energy conversion

Rana,

Dhull,

Sudhaik

et al. 2023

Nanofab

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“…[1][2][3][4][5][6] Antibiotic abuse and dye effluent pollution have led to a number of serious environmental problems. [7][8][9][10] As commonly used broad-spectrum antibiotics, TC and LEF are difficult to metabolize in living organisms and are very stable in the natural environment, while conventional antibiotic wastewater treatment techniques are ineffective. [11][12][13][14][15][16] Meanwhile, RhB and MB are important constituents of industrial dye wastewater.…”

Section: Introductionmentioning

confidence: 99%

Constructing a novel super-crosslinked triazine COF through molecular expansion for enhanced photocatalytic performance under visible light

Shao,

You,

Wan

et al. 2024

Environ. Sci.: Nano

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“…Cu 2 O possesses p-type behavior, and it is considered as an exceptional material because of its rich composition, facile manufacturing, and appropriate band gap width (2.0 eV). , However, its broad applicability is restricted by the vital photocorrosion and speedy recombination of photogenerated carriers. , Coupling to create a Cu 2 O/g-C 3 N 4 heterojunction can evidently increase the photocatalytic capacity, which can broaden the spectrum of responses of g-C 3 N 4 to visible light, speed up the dynamic process of photogenerated carriers, and increase solar light utilization rate. − Meanwhile, g-C 3 N 4 -wrapped Cu 2 O could hinder Cu 2 O photocorrosion from forming in the Cu 2 O/g-C 3 N 4 heterojunction. Therefore, much more research on Cu 2 O/g-C 3 N 4 heterojunction applied in photocatalytic hydrogen production, photocatalytic degradation, and photocatalytic CO 2 reduction has received immense attention.…”

Section: Introductionmentioning

confidence: 99%

Facet-Engineered Cu₂O Microparticles on Graphitic Carbon Nitride Nanosheets as Z-Scheme Heterojunction Photocatalysts for Degradation of Tetracycline

Zhang,

Li,

Bai

et al. 2024

ACS Appl. Nano Mater.

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Optimizing the photocatalytic efficiency of semiconductor materials is capable of being achievable by the effective tuning of the interfacial transport efficiency of photogenerated carriers utilizing crystal facet engineering. This study adopted a liquid deposition routine tackle to generate cubic, truncated octahedral, and octahedral Cu 2 O crystals with various exposed facets. Afterward, a Cu 2 O/g-C 3 N 4 heterojunction was constructed exploiting defective g-C 3 N 4 as a carrier. By controlling the exposed facet, the work function difference between Cu 2 O and g-C 3 N 4 was adjusted, resulting in an enhanced built-in electric field and greater photogenerated carrier transit via the Cu 2 O/g-C 3 N 4 heterojunction interface. The OCN heterojunction, which is composed of g-C 3 N 4 and octahedral Cu 2 O with a {111} facet, revealed the highest photocatalytic degradation effectiveness of tetracycline (90.8%), which exceeded the values of pure octahedral Cu 2 O and g-C 3 N 4 by 1.26 and 1.75 times, respectively, as determined by photocatalytic activity experiments. Z-scheme heterojunction among g-C 3 N 4 and octahedral Cu 2 O has been verified through UPS, XPS, EIS, and transient photocurrent response analysis, along the direction of the built-in electric field recognized between them. In contrast, OCN displayed the highest photocatalytic activity due to its Z-scheme heterojunction, which evidently promoted the separation efficiency of photogenerated carriers. This research proposes an innovative approach for regulating the exposed facet of semiconductors and augmenting the inherent electric field strength of heterojunctions, culminating in the efficient photocatalytic degradation of tetracycline.

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ZnO/Cu2O/g-C3N4 heterojunctions with enhanced photocatalytic activity for removal of hazardous antibiotics

Cited by 11 publications

References 82 publications

Recent updates on g-C3N4/ZnO-based binary and ternary heterojunction photocatalysts toward environmental remediation and energy conversion

Recent updates on g-C3N4/ZnO-based binary and ternary heterojunction photocatalysts toward environmental remediation and energy conversion

Constructing a novel super-crosslinked triazine COF through molecular expansion for enhanced photocatalytic performance under visible light

Facet-Engineered Cu₂O Microparticles on Graphitic Carbon Nitride Nanosheets as Z-Scheme Heterojunction Photocatalysts for Degradation of Tetracycline

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ZnO/Cu2O/g-C3N4 heterojunctions with enhanced photocatalytic activity for removal of hazardous antibiotics

Cited by 11 publications

References 82 publications

Recent updates on g-C3N4/ZnO-based binary and ternary heterojunction photocatalysts toward environmental remediation and energy conversion

Recent updates on g-C3N4/ZnO-based binary and ternary heterojunction photocatalysts toward environmental remediation and energy conversion

Constructing a novel super-crosslinked triazine COF through molecular expansion for enhanced photocatalytic performance under visible light

Facet-Engineered Cu2O Microparticles on Graphitic Carbon Nitride Nanosheets as Z-Scheme Heterojunction Photocatalysts for Degradation of Tetracycline

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Facet-Engineered Cu₂O Microparticles on Graphitic Carbon Nitride Nanosheets as Z-Scheme Heterojunction Photocatalysts for Degradation of Tetracycline