Ag-Incorporated Cr-Doped BaTiO3 Aerogel toward Enhanced Photocatalytic Degradation of Methyl Orange

被引:2
作者
Wu, Jun [1 ,2 ]
Shao, Gaofeng [3 ]
Wu, Xiaodong [1 ,2 ]
Cui, Sheng [1 ,2 ]
Shen, Xiaodong [1 ,2 ]
机构
[1] Nanjing Tech Univ, Coll Mat Sci & Engn, Nanjing 211816, Peoples R China
[2] Nanjing Tech Univ, Jiangsu Collaborat Innovat Ctr Adv Inorgan Funct C, Nanjing 211816, Peoples R China
[3] Nanjing Univ Informat Sci & Technol, Sch Chem & Mat Sci, Nanjing 210044, Peoples R China
基金
中国国家自然科学基金;
关键词
BaTiO3; aerogel; Cr-doped; Ag nanoparticles; photocatalytic degradation; methyl orange removal; ONE-STEP SYNTHESIS; NANOPARTICLES; PERFORMANCE; FABRICATION; COMPOSITE; SRTIO3;
D O I
10.3390/nano14100848
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
A novel Cr-doped BaTiO3 aerogel was successfully synthesized using a co-gelation technique that involves two metallic alkoxides and a supercritical drying method. This freshly prepared aerogel has a high specific surface area of over 100 m(2)/g and exhibits improved responsiveness to the simulated sunlight spectrum. Methyl orange (MO) was chosen as the simulated pollutant, and the results reveal that the Cr-doped BaTiO3 aerogel, when modified with the noble metal silver (Ag), achieves a pollutant removal rate approximately 3.2 times higher than that of the commercially available P25, reaching up to 92% within 60 min. The excellent photocatalytic performance of the Ag-modified Cr-doped BaTiO3 aerogel can be primarily attributed to its extensive specific surface area and three-dimensional porous architecture. Furthermore, the incorporation of Ag nanoparticles effectively suppresses the recombination of photo-generated electrons and holes. Stability and reusability tests have confirmed the reliability of the Ag-modified Cr-doped BaTiO3 aerogel. Therefore, this material emerges as a highly promising candidate for the treatment of textile wastewater.
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页数:16
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