Enhanced electrochemical hydrogen peroxide productionfrom surface state modified mesoporous tin oxide catalysts
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https://doi.org/10.1002/er.7792 |
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Títol
Enhanced electrochemical hydrogen peroxide productionfrom surface state modified mesoporous tin oxide catalystsAutoria
Data de publicació
2022-05-15Editor
WileyISSN
0363-907X; 1099-114XCita bibliogràfica
BinSaeedan NM,Arunachalam P, Al-Mayouf AM, et al. Enhancedelectrochemical hydrogen peroxide productionfrom surface state modified mesoporous tin oxidecatalysts.Int J Energy Res. 2022;46(7):9150-9165.doi:10.1002/er.7792Tipus de document
info:eu-repo/semantics/articleVersió
info:eu-repo/semantics/publishedVersionParaules clau / Matèries
Resum
Electrochemical hydrogen peroxide (H2O2) production via the two-electronoxygen reduction reaction (ORR) has received much consideration as a substi-tute to the well-known industrial anthraquinone method. The present ... [+]
Electrochemical hydrogen peroxide (H2O2) production via the two-electronoxygen reduction reaction (ORR) has received much consideration as a substi-tute to the well-known industrial anthraquinone method. The present chal-lenge in this area is developing appropriate cost-efficient materials withexcellent electrocatalytic properties, durability, and product selectivity. Thisstudy examined electrocatalytic performance and selectivity toward H2O2pro-duction of mesoporous SnO2(meso-SnO2) electrodes prepared using a tunablehydrothermal process. After evaluating the effects of different NaCl concentra-tions and annealing conditions in the hydrothermal method, an electrode wasdeveloped with a significantly improved H2O2production rate than the pris-tine material. Vacuum annealing led to materials with more surface defects.Meso-SnO2annealed under vacuum exhibits distinctive electrochemical prop-erties of two well-separated 2e O2reduction peaks to produce H2O2as themain product compared tomeso-SnO2annealed in air. Most importantly, theintroduction of surface oxygen vacancies into themeso-SnO2crystal structurewas determined to be a prominent approach to enhance its ORR performancein producing H2O2, showing great selectivity of above 85% at an onset potentialof 0.6 VRHE. The vacancy-richmeso-SnO2reveals enhanced electrocatalyticperformance with ORR peak potential to be 0.6 VRHE,and the number of elec-tron transfer numbers is 2.5, but greater durability in alkaline solutions. Thus,this work presents an innovative route for designing, synthesizing, and mecha-nistic examining enhanced SnO2-based catalytic materials for H2O2production. [-]
Publicat a
Int J Energy Res.2022;46:9150–9165Dades relacionades
All data generated or analyzed during this study areincluded in this published article (and its supplementaryinformation files)Entitat finançadora
KingSaud University
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© 2022 John Wiley & Sons Ltd.
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