Enhanced photodegradation of tetracycline in wastewater and conversion of CO2 by solar light assisted ZnO/g-C3N4

Phạm, Thi Huong; Tran, Man Hieu; Hiền, Chu Thị Thu; Myung, Yusik; Jung, Sung Hoon; Mapari, M.G.; Kim, Tae‐Young

doi:10.1016/j.envres.2022.114825

Cited by 27 publications

(9 citation statements)

References 11 publications

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“…In another report, ZnO hollow spheres wrapped by GCN sheets promoted the CH 4 production in preference to CH 3 OH and CO, which was stable up to three cycles . The efficiency toward CO formation declined to ∼71% for the fifth recycling tests, suggesting the good stability of GCN/ZnO …”

Section: Photocatalytic Mechanisms Of Gcn/znomentioning

confidence: 91%

“…118 The efficiency toward CO formation declined to ∼71% for the fifth recycling tests, suggesting the good stability of GCN/ZnO. 153 As the sheet thickness of GCN also alters the CO 2 /H 2 O adsorption behavior, care must be taken to balance them as a lower amount of H 2 O adsorption favors CO production, which can deactivate the composite surface. Also, it would be prominent if CO 2 was in situ generated for the photocatalytic measurements as the commercial CO 2(g) is likely to be contaminated with CH 4(g) .…”

Section: Photocatalytic Hydrogen Evolution Reactionmentioning

confidence: 99%

“…The hydrothermal treatment and annealing steps are amended to improve the adhesion between the crystallized ZnO and GCN. ,− The particle sizes of ZnO were reported to be ∼44.2 and ∼6.2 nm in the pure form and in the composite structure, respectively, which suggests that GCN has an inhibition effect on the particle growth dynamics of ZnO . The GCN nanofilms were coated on the surface of porous ZnO-NSs via thermal decomposition of bulk GCN .…”

Section: Preparation Of the Compositementioning

confidence: 99%

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Review and Perspective on Rational Design and Interface Engineering of g-C₃N₄/ZnO: From Type-II to Step-Scheme Heterojunctions for Photocatalytic Applications

Kumar¹,

Kavitha²,

Manjunatha³

2023

Energy Fuels

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Heterostructuring the g-C 3 N 4 (GCN) with wide gap oxide photocatalysts is of prominent interest as they can harvest photons spanning the UV−visible region. In this regard, GCN/ZnO have garnered remarkable attention due to their admirable structure, optical, dimensional anisotropy, and electronic properties. The 2D sheet-like structure of GCN can serve as a suitable substrate for the growth of distinct ZnO nanostructures under the multitude of reaction conditions. This review focuses on the progress in the rational design and interface engineering of GCN/ZnO to from Type-II and Z/S-scheme heterojunctions, followed by their relevant photocatalytic applications toward H 2 evolution, CO 2 reduction, pollutant degradation, and bacteria inactivation. The mechanism underlying the crystallization of GCN and ZnO together with their intimate contact in the composite are emphasized under the light of diverse preparation methods. The modification of GCN/ZnO with cocatalysts such as metals, alloy, semiconductors, and carbon materials to form ternary systems to highlight their advancements. The gap analysis and future prospectus of this intricate heterostructure concerning the challenges in synthetic approaches and the charge carrier dynamics are discussed. This review envisages the development of efficient GCN/ZnO-based heterostructures for multiscale applications.

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Section: Photocatalytic Mechanisms Of Gcn/znomentioning

confidence: 91%

Section: Photocatalytic Hydrogen Evolution Reactionmentioning

confidence: 99%

Section: Preparation Of the Compositementioning

confidence: 99%

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Review and Perspective on Rational Design and Interface Engineering of g-C₃N₄/ZnO: From Type-II to Step-Scheme Heterojunctions for Photocatalytic Applications

Kumar¹,

Kavitha²,

Manjunatha³

2023

Energy Fuels

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“…26 Notably, in the XRD patterns of both the CN/ ZnO heterojunction and NCN/ZnO heterojunction, only diffraction peaks corresponding to ZnO were observed, with no apparent diffraction peaks attributable to typical graphitic carbon nitride. This suggests that CN and NCN exist in an amorphous state within the heterojunction, 27 or they are deposited in the structure of the heterojunction in small amounts, resulting in the inability to clearly observe the diffraction peaks.…”

Section: ■ Experimental Sectionmentioning

confidence: 99%

Low-Temperature Synthesis of Cyano-Rich Modified Surface-Alkalinized Heterojunctions with Directional Charge Transfer for Photocatalytic In Situ Generation and Consumption of Peroxides

Zhu,

Zhao,

Duan

et al. 2024

ACS Appl. Mater. Interfaces

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The synthesis of low-temperature poly(heptazine imide) (PHI) presents a significant challenge. In this context, we have developed a novel lowtemperature synthesis strategy for PHI in this work. This strategy involves the introduction of Na + ions, which etch and disrupt the conjugated structure of carbon nitride (CN) during assisted thermal condensation. This disruption leads to the partial decomposition of the heptazine ring structure, resulting in the formation of C�N functionalities on the CN surface, which are enriched with hydroxyl groups and undergo cyano modification. The formation of heterojunctions between CN and ZnO, which facilitate charge transfer along an immobilization pathway, accelerated charge transfer processes and improved reactant adsorption as well as electron utilization efficiency. The resulting catalyst was employed for the room temperature, atmospheric pressure, and solvent-free photocatalytic selective oxidation of cumene (CM), achieving a cumene conversion rate of 28.7% and a remarkable selectivity of 92.0% toward the desired product, cumene hydroperoxide (CHP). Furthermore, this CHP induced oxidative reactions, as demonstrated by the successful oxidation of benzylamine to imine and the oxidation of sulfide to sulfoxide, both yielding high product yields. Additionally, the utilization of a continuous-flow device significantly reduces the reaction time required for these oxidation processes. This work not only introduces an innovative approach to environmentally friendly, sustainable, clean, and efficient PHI synthesis but also underscores the promising potential and advantages of carbon nitride-based photocatalysts in the realm of sustainable and green organic transformations.

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“…Abanades et al developed an experimental reactor for capturing CO 2 using Ca-adsorbent. 13 Lim et al evaluated the municipal solid waste incineration ash-derived sorbents for CO 2 capturing with a high potential to develop low-cost technology for decarbonization. 10 Quang and his co-workers discussed the potential of renewable energy sources in reducing CO 2 capture costs and presented strategies for achieving net-zero emission.…”

mentioning

confidence: 99%

Enhanced solar‐light driven CO₂ conversion using Pt‐doped graphitic carbon nitride photocatalyst

Pham,

Nguyen,

Chu

et al. 2023

Greenhouse Gases

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The increasing levels of carbon dioxide (CO2) in our atmosphere demand innovative and efficient methods for its reduction. In this context, we present an advanced solar‐driven photocatalyst, Pt‐doped graphitic carbon nitride (Pt/g‐C3N4), specifically engineered for enhanced photoreduction of CO2. Our findings highlight the dual advantage of Pt/g‐C3N4: enhanced visible light absorption and electron‐hole pair dynamics, ensuring efficient carrier separation. Notably, the CO and CH4 yields, when employing Pt/g‐C3N4, surpassed those with the pristine g‐C3N4 catalyst by factors of 3.1 and 4.3, respectively. Moreover, the Pt/g‐C3N4 catalyst exhibited consistent high‐efficiency of CO2 conversion over successive cycles, emphasizing the catalyst's robustness. This work underscores the potential of Pt/g‐C3N4 as a viable tool against escalating CO2 levels, paving the way for a green and sustainable conversion of this predominant greenhouse gas into beneficial chemicals. © 2023 Society of Chemical Industry and John Wiley & Sons, Ltd.

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Enhanced photodegradation of tetracycline in wastewater and conversion of CO2 by solar light assisted ZnO/g-C3N4

Cited by 27 publications

References 11 publications

Review and Perspective on Rational Design and Interface Engineering of g-C₃N₄/ZnO: From Type-II to Step-Scheme Heterojunctions for Photocatalytic Applications

Review and Perspective on Rational Design and Interface Engineering of g-C₃N₄/ZnO: From Type-II to Step-Scheme Heterojunctions for Photocatalytic Applications

Low-Temperature Synthesis of Cyano-Rich Modified Surface-Alkalinized Heterojunctions with Directional Charge Transfer for Photocatalytic In Situ Generation and Consumption of Peroxides

Enhanced solar‐light driven CO₂ conversion using Pt‐doped graphitic carbon nitride photocatalyst

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Enhanced photodegradation of tetracycline in wastewater and conversion of CO2 by solar light assisted ZnO/g-C3N4

Cited by 27 publications

References 11 publications

Review and Perspective on Rational Design and Interface Engineering of g-C3N4/ZnO: From Type-II to Step-Scheme Heterojunctions for Photocatalytic Applications

Review and Perspective on Rational Design and Interface Engineering of g-C3N4/ZnO: From Type-II to Step-Scheme Heterojunctions for Photocatalytic Applications

Low-Temperature Synthesis of Cyano-Rich Modified Surface-Alkalinized Heterojunctions with Directional Charge Transfer for Photocatalytic In Situ Generation and Consumption of Peroxides

Enhanced solar‐light driven CO2 conversion using Pt‐doped graphitic carbon nitride photocatalyst

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Review and Perspective on Rational Design and Interface Engineering of g-C₃N₄/ZnO: From Type-II to Step-Scheme Heterojunctions for Photocatalytic Applications

Review and Perspective on Rational Design and Interface Engineering of g-C₃N₄/ZnO: From Type-II to Step-Scheme Heterojunctions for Photocatalytic Applications

Enhanced solar‐light driven CO₂ conversion using Pt‐doped graphitic carbon nitride photocatalyst