文献类型：期刊文献

英文题名：Soft template assisted hydrothermal synthesis of phosphorus doped porous carbon spheres with tunable microstructure as electrochemical nanozyme sensor for distinguishable detection of two flavonoids coupled with derivative voltammetry

作者：Yi, Yufu[1] Wu, Shiyu[1] Luo, Hai[1] He, Lu[1] Yang, Yuling[1] Xue, Ting[2] Xu, Junming[3] Wen, Yangping[2] Wang, Peng[1]

第一作者：Yi, Yufu

通信作者：Wang, P[1];Wen, YP[2]

机构：[1]Jiangxi Agr Univ, Coll Forestry, East China Woody Fragrance & Flavor Engn Res Ctr, Nanchang 330045, Jiangxi, Peoples R China;[2]Jiangxi Agr Univ, Inst Funct Mat & Agr Appl Chem, Key Lab Chem Utilizat Plant Resources Nanchang, Nanchang 330045, Jiangxi, Peoples R China;[3]Chinese Acad Forestry, Inst Chem Ind Forest Prod, Key Lab Biomass Energy & Mat, Natl Engn Lab Biomass Chem Utilizat, Nanjing 210042, Peoples R China

年份：2021

卷号：897

外文期刊名：JOURNAL OF ELECTROANALYTICAL CHEMISTRY

收录：;EI(收录号：20213210730889);Scopus(收录号：2-s2.0-85111868201);WOS:【SCI-EXPANDED(收录号:WOS:000701843700016)】；

基金：The work is supported by National Natural Science Foundation of China (31860191, 51962007, 51662014) , Youth Key Project of Natu-ral Science Foundation of Jiangxi Province (20192ACBL21016, 20192ACBL21015) , Natural Science Foundation of Nanchang City (2018CXTD014).

语种：英文

外文关键词：Hierarchically porous carbon; Phosphorus doping; Sensor; Luteolin; Baicalin

摘要：A variety of phosphorus doped porous carbon spheres (P-PCSs) with tunable microstructure are facilely prepared by hydrothermal method using xylan as a carbon source, phosphoric acid as an activator and dopant, surfactants as soft templates. Surfactants are beneficial to the development of pore structure and the decrease of particle size. In particular, the introduction of polyvinylpyrrolidone (PVP) facilitates the formation of hierarchically porous structure and nanoscale dimension. The activation of phosphoric acid can improve the graphitization degree, enrich the surface oxygen-containing groups, realize phosphorus doping, and increase the specific surface area. The prepared PVP-P-PCS as a highly conducting electrocatalyst with well dispersed nano-sized spherical morphology of 50-150 nm, large specific surface area of 1558.14 m2/g and hierarchical porosity with coexisted micropores, mesopores and macropores, displays enhanced current responses of about 55-fold enhancement for luteolin and 52-fold enhancement for baicalin compared with bare GCE, intrinsic oxidase-like (nanozyme) characteristics, excellent electrocatalytic ability for luteolin with a low limit of detection (LOD) of 0.77 nM in linear ranges of 0.05-1 mu M, and baicalin with a LOD of 3.3 nM in linear range of 0.05-1 mu M. First-order derivative voltammetry is selected for realizing distinguishable determination of two flavonoids, which demonstrates satisfactory results in the practical application.