Green synthesis of nickel species in situ modified hollow microsphere TiO2 with enhanced photocatalytic activity

被引:20
|
作者
Wang, Qi [1 ]
Qin, Zenan [1 ]
Chen, Jie [1 ]
Ren, Baosheng [1 ]
Chen, Qifeng [1 ]
Guo, Yanchuan [2 ]
Cao, Xiaofeng [2 ]
机构
[1] Univ Jinan, Adv Bldg Mat Engn Res Ctr, Minist Educ, Shandong Prov Key Lab Preparat & Measurement Bldg, 336 Nanxinzhuang West Rd, Jinan 250022, Shandong, Peoples R China
[2] Chinese Acad Sci, TIPC, Key Lab Photochem Convers & Optoelect Mat, 29 Zhongguancun East Rd, Beijing 100190, Peoples R China
基金
中国国家自然科学基金;
关键词
Green synthesis; Hollow microsphere TiO2; Nickel species modification; High crystallinity; Photocatalytic activitya; EXPOSED; 001; FACETS; CO-DOPED TIO2; TEMPLATE-FREE; FABRICATION; NANOSHEETS; SPHERES; NIO; DEGRADATION; NANOSPHERES; POLLUTANTS;
D O I
10.1016/j.apsusc.2015.12.033
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
A green template-free solvothermal approach was developed to synthesize hollow microsphere TiO2-modified in situ with nickel species (Ni2+/Ni3+). Oxalic acid played a pivotal role in the formation of hollow architecture, acting as chelating agent, structure-directing reagent, and acidity-modulation reagent, while isopropyl alcohol ensured the formation of spherical structure. The microstructure and composition of the products were characterized with various techniques, and the results showed that the products exhibited not only highly crystallized anatase phase, large specific surface areas, and the mesoporous shell and hollow architecture, but also the coexistence of Ni2+/Ni3+. The unique structure and composition of the photocatalysts resulted in improved UV and visible photocatalytic activity for degradation of Rhodamine-B and 2,4-dichlorophenol. (C) 2015 Elsevier B.V. All rights reserved.
引用
收藏
页码:1 / 8
页数:8
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