Increased photocorrosion resistance of ZnO foams via transition metal doping

Warren, Zachary; Wenk, Jannis; Mattia, Davide

doi:10.1039/d2ra06730g

Cited by 7 publications

(4 citation statements)

References 81 publications

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“…Carbamazepine (CBZ) was selected as a model micropollutant for photocatalytic activity (PCA) studies, due to being the top most detected pharmaceutical micropollutant worldwide. 44 Furthermore carbamazepine was used as the target compound to allow for comparison with the literature, 27,45 and because its degradation pathways using hydroxyl radicals generated by photocatalysis are well known and widely reported in the literature. 46,47 The recirculating reactors were operated at a flow rate of 250 mL min −1 .…”

Section: Methodsmentioning

confidence: 99%

“…The photocatalytic activity of the 3D printed TiO 2 foams was assessed by investigating the degradation of carbamazepine in a recirculating batch reactor design validated in previous works. 27,45 In the absence of light, the removal of carbamazepine via adsorption of pollutant onto the catalyst is low as is the photolysis, conducted in the absence of catalyst, with both showing removal values of ∼5%. Application of both catalyst and irradiation lead to an increase in removal to 39% for carbamazepine.…”

Section: Characterisation Of Printed Objectsmentioning

confidence: 99%

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Mixed-phase titania foams via 3D-printing for pharmaceutical degradation

Warren,

Guaraldo,

Barisic

et al. 2024

J. Mater. Chem. A

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Section: Methodsmentioning

confidence: 99%

Section: Characterisation Of Printed Objectsmentioning

confidence: 99%

Mixed-phase titania foams via 3D-printing for pharmaceutical degradation

Warren,

Guaraldo,

Barisic

et al. 2024

J. Mater. Chem. A

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“…Further research is warranted to maintain the photocatalytic efficiency of ZnO while simultaneously enhancing its stability in water. 88 5.11. Strategies for Photocatalyst Regeneration.…”

Section: Effect Of Phmentioning

confidence: 99%

“…Nonetheless, the decrease in photocatalytic activity was attributed to alterations in the material’s energy level positions. Further research is warranted to maintain the photocatalytic efficiency of ZnO while simultaneously enhancing its stability in water …”

Section: Parameters Affecting the Photocatalytic Dye Degradationmentioning

confidence: 99%

Photocatalytic Dye Degradation from Textile Wastewater: A Review

Khan,

Noor,

Iqbal

et al. 2024

ACS Omega

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The elimination of dyes discharged from industrial wastewater into water bodies is crucial due to its detrimental effects on aquatic organisms and potential carcinogenic impact on human health. Various methods are employed for dye removal, but they often fall short in completely degrading the dyes and generating large amounts of suspended solids. Hence, there is a critical need for an efficient process that can achieve complete dye degradation with minimal waste emission. Among traditional water treatment approaches, photocatalysis stands out as a promising method for degrading diverse toxic and organic pollutants present in wastewater. In this review, the heterogeneous photocatalysis process is well explained for dye removal. This comprehensive review not only provides insightful illumination on the classification of dyes but also thoroughly explains various dye removal methods and the underlying mechanisms of photocatalysis. Furthermore, factors which effect the activity of the photocatalysis process are also explained in detail. Likewise, we categorized the heterogeneous photocatalyst in three generations and observed their activity for dye removal. This review also addresses the challenges and effectiveness of this promising field. Its primary aim is to offer a comprehensive overview of the photocatalytic degradation of pollution and to explore its potential for further future applications.

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Emerging ZnO Semiconductors for Photocatalytic CO₂ Reduction to Methanol

Kshirsagar,

Shelake,

Biswas

et al. 2024

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Carbon recycling is poised to emerge as a prominent trend for mitigating severe climate change and meeting the rising demand for energy. Converting carbon dioxide (CO2) into green energy and valuable feedstocks through photocatalytic CO2 reduction (PCCR) offers a promising solution to global warming and energy needs. Among all semiconductors, zinc oxide (ZnO) has garnered considerable interest due to its ecofriendly nature, biocompatibility, abundance, exceptional semiconducting and optical properties, cost‐effectiveness, easy synthesis, and durability. This review thoroughly discusses recent advances in mechanistic insights, fundamental principles, experimental parameters, and modulation of ZnO catalysts for direct PCCR to C1 products (methanol). Various ZnO modification techniques are explored, including atomic size regulation, synthesis strategies, morphology manipulation, doping with cocatalysts, defect engineering, incorporation of plasmonic metals, and single atom modulation to boost its photocatalytic performance. Additionally, the review highlights the importance of photoreactor design, reactor types, geometries, operating modes, and phases. Future research endeavors should prioritize the development of cost‐effective catalyst immobilization methods for solid‐liquid separation and catalyst recycling, while emphasizing the use of abundant and non‐toxic materials to ensure environmental sustainability and economic viability. Finally, the review outlines key challenges and proposes novel directions for further enhancing ZnO‐based photocatalytic CO2 conversion processes.

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Increased photocorrosion resistance of ZnO foams via transition metal doping

Abstract: Practical use of ZnO is hindered by its low resistance to photocorrosion in water, which leads to metal leaching and loss of performance over time. Here we demonstrate how metal doping can significantly increase ZnO's resistance to photocorrosion.

Cited by 7 publications

References 81 publications

Mixed-phase titania foams via 3D-printing for pharmaceutical degradation

Mixed-phase titania foams via 3D-printing for pharmaceutical degradation

Photocatalytic Dye Degradation from Textile Wastewater: A Review

Emerging ZnO Semiconductors for Photocatalytic CO₂ Reduction to Methanol

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Increased photocorrosion resistance of ZnO foams via transition metal doping

Abstract: Practical use of ZnO is hindered by its low resistance to photocorrosion in water, which leads to metal leaching and loss of performance over time. Here we demonstrate how metal doping can significantly increase ZnO's resistance to photocorrosion.

Cited by 7 publications

References 81 publications

Mixed-phase titania foams via 3D-printing for pharmaceutical degradation

Mixed-phase titania foams via 3D-printing for pharmaceutical degradation

Photocatalytic Dye Degradation from Textile Wastewater: A Review

Emerging ZnO Semiconductors for Photocatalytic CO2 Reduction to Methanol

Contact Info

Product

Resources

About

Emerging ZnO Semiconductors for Photocatalytic CO₂ Reduction to Methanol