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- 저자 : Ruiyong Zhang (검색결과 1 건)
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Kunpeng Liu,Nan Wang,Jianhua Li,Fanglin Du,Baorong Hou,Ruiyong Zhang 한국공업화학회 2023 Journal of Industrial and Engineering Chemistry Vol.128 No.-
Electrochemical two-electron water oxidation reaction (2e WOR) to produce H2O2 has been widely concerned. However, four-electron competition reaction causes the large overpotential and low productionrates of 2e WOR, which restrict its’ development and application. Herein, we prepared N-TiO2 derivedfrom NH2-MIL-125 by the hydrothermal combined with calcination method. We found that N-TiO2 asphotoanode exhibited the well properties of photoelectrocatalysis water oxidation, which gave an overpotentialof 630 mV at 1 mA cm2. The overpotentials of N-TiO2 was approximately 130 mV (at1 mA cm2) lower than NH2-MIL-125, and even lower than the previous reported TiO2, which may attributeto the increased oxygen vacancy with the calcination process and N doping. In addition, we investigatedthe degradation performance of the prepared catalysts to degrade methylene blue byphotoelctrocatalysis on-site the preparation of H2O2. It was shown that N-TiO2 performed high degradationefficiency (91%) and excellent stability. The possible mechanism was speculated due to theincreased oxygen vacancy and N doping. This work provides a new idea for photoelectrocatalysis wateroxidation materials and points out a new way for on-site H2O2 production for direct use
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