文献类型：期刊文献

英文题名：N/O co-doped porous carbon derived from polyester waste for electrochemical production of H2O2

作者：Luo, Mingsheng[1];Wang, Chupeng[1];Song, Shiqi[1];Tang, Maochong[1];Wang, Xiao Xia[2];Wu, Min[3]

机构：[1]East China Univ Sci & Technol, Sch Mat Sci & Engn, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Sch Mech & Power Engn, Shanghai 200237, Peoples R China;[3]Tibetan Plateau Sci Res Ctr Lhasa, Lhasa 850000, Peoples R China

年份：2025

卷号：6

期号：9

起止页码：2845

外文期刊名：MATERIALS ADVANCES

收录：EI(收录号：20251318121389);WOS:【ESCI(收录号:WOS:001450497100001)】；

基金：This research was funded by Xizang Autonomous Region Science and Technology Plan: XZ202402ZY0014, XZ202401ZY0067.

语种：英文

外文关键词：Bioremediation - Catalytic cracking - Electrolytic reduction - Oxygen reduction reaction - Plastic recycling

摘要：Electrochemical synthesis of hydrogen peroxide (H2O2) has been considered as an ideal alternative to traditional anthraquinone techniques due to its convenient operation and environmental friendliness. However, the development of catalysts with high activity, selectivity, and stability is still an important challenge. In this study, waste polyethylene terephthalate (PET) was converted into a high-value carbon-based catalyst for the electrochemical production of H2O2. Nitrogen-oxygen co-doped porous carbon (NOPC) was obtained by pyrolysis of PET with addition of melamine as a nitrogen source and magnesium oxide (MgO) as a templating agent. The cross-linking reaction during the pyrolysis process tightly bound nitrogen (N) and oxygen (O) active sites via amide group formation. These groups were uniformly distributed within the carbon matrix, accompanied by numerous defects, thereby enhancing both activity and selectivity. The optimized PET-derived NOPC catalysts exhibited a H2O2 selectivity of approximately 85% with an electron transfer number close to 2.3, and demonstrated long-term stability for over 10 hours in acidic solution. The electrocatalytic H2O2 yield in a custom-built cell reached 261.23 mmol gcatalyst-1 h-1 with faradaic efficiency above 80%. This work presents an efficient synthesis method for 2-electron oxygen reduction reaction (2e- ORR) electrocatalysts and provides a sustainable strategy for recycling waste plastics into valuable carbon materials.