Precursor- and waste-free synthesis of spark-ablated nanoparticles with enhanced photocatalytic activity and stability towards airborne organic pollutant degradation

Photocatalyst synthesis typically involves multiple steps, expensive precursors, and solvents. In contrast, spark ablation offers a simple process of electrical discharges in a gap between two electrodes made from a desirable material. This enables a precursor- and waste-free generation of pure meta...

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Published inEnvironmental science. Nano Vol. 11; no. 3; pp. 123 - 143
Main Authors Drdova, Sarka, Gao, Min, Sambalova, Olga, Pauer, Robin, Zhou, Zhouping, Dimitriadou, Sofia, Schmidt-Ott, Andreas, Wang, Jing
Format Journal Article
LanguageEnglish
Published England Royal Society of Chemistry 14.03.2024
The Royal Society of Chemistry
Subjects
Ablation
Air pollution
Catalytic activity
Chemistry
Electric discharges
Filters
Gels
Manganese dioxide
Manganese oxides
Metal oxides
Metals
Nanoparticles
Photocatalysis
Precursors
Sol-gel processes
Stability
Synthesis
Titanium dioxide
Zinc oxide
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Summary:Photocatalyst synthesis typically involves multiple steps, expensive precursors, and solvents. In contrast, spark ablation offers a simple process of electrical discharges in a gap between two electrodes made from a desirable material. This enables a precursor- and waste-free generation of pure metal oxide nanoparticles or mixtures of various compositions. This study presents a two-step method for the production of photocatalytic filters with deposited airborne MnO x , TiO 2 , and ZnO nanoparticles using spark ablation and calcination processes. The resulting MnO x and TiO 2 filters demonstrated almost twice the activity with outstanding performance stability, as compared to sol-gel MnO 2 and commercial TiO 2 . The introduced method is not only simple, precursor- and waste-free, and leads to superior performance for the case studied, but it also has future potential due to its versatility. It can easily produce mixed and doped materials with further improved properties, making it an interesting avenue for future research. Environmentally friendly and waste-free production of photocatalytic filters involving spark ablation and calcination processes for enhanced and durable photocatalytic performance.
Bibliography:https://doi.org/10.1039/d3en00348e
Electronic supplementary information (ESI) available. See DOI
ObjectType-Article-1
SourceType-Scholarly Journals-1
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content type line 23
ISSN:2051-8153
2051-8161
DOI:10.1039/d3en00348e