王玉萍教授課題組在SCIENCE OF THE TOTAL ENVIRONMENT發(fā)表研究論文
NaOH-induced formation of 3D flower-sphere BiOBr/Bi4O5Br2 with proper-oxygen vacancies via in-situ self-template phase transformation method for antibiotic photodegradation
Li, PJ (Li, Panjie)[ 1 ] ; Cao, W (Cao, Wang)[ 1 ] ; Zhu, Y (Zhu, Yu)[ 1 ] ; Teng, QY (Teng, Qiuyi)[ 1 ] ; Peng, L (Peng, Lu)[ 1 ] ; Jiang, CY (Jiang, Caiyun)[ 2 ] ; Feng, CS (Feng, Changsheng)[ 1 ] ; Wang, YP (Wang, Yuping)[ 1,3 ]*（王玉萍）
[ 1 ] Nanjing Normal Univ, Sch Chem & Mat Sci, Jiangsu Prov Key Lab Mat Cycling & Pollut Control, Nanjing 210046, Peoples R China
[ 2 ] Jiangsu Inst Commerce, Dept Engn & Technol, Nanjing 211168, Peoples R China
[ 3 ] Nanjing Univ Sci & Technol, Jiangsu Key Lab Chem Pollut Control & Resources R, Nanjing 210094, Peoples R China
SCIENCE OF THE TOTAL ENVIRONMENT，202005,715,136809
In this study, a novel 3D flower-sphere BiOBr/Bi4O5Br2 with proper-oxygen vacancies (OV) was successfully synthesized by using 3D BiOBr as a self-sacrificed template, NaOH as a structure-driving reagent and midwifery agent of OV. The synthesis mechanism was systematically studied. It revealed that Bi4O5Br2 lamina generated via in-situ phase transfer tightly interspersed in the interior and surface of 3D BiOBr hierarchical structures; calcination temperature, stirring time and -OH concentration can optimize the composition and structure of materials. Also, the calcination conditions (temperatures and air or N-2 atmosphere) can regulate the OV's concentration. Ultimately, 3D hierarchical architectures, the optimal heterojunction composition and OV with proper concentrations three positive factors synergistically promoted the photoelectric activity of BiOBr/Bi4O5Br2-OV, making it exhibit ultrahigh photocatalytic activity for antibiotic photodegradation (tetracycline, TC; ciprofloxacin, CIP). We believe the synthesis methods and design idea mentioned in this paper have high instructive significance to prepare high-performance materials.
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https://www.sciencedirect.com/science/article/pii/S0048969720303193?via%3Dihub
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