气候变化领域集成服务门户(CCPortal): Facile Formation of Anatase/Rutile TiO2 Nanocomposites with Enhanced Photocatalytic Activity

CCPortal

DOI	10.3390/molecules24162996
	Facile Formation of Anatase/Rutile TiO2 Nanocomposites with Enhanced Photocatalytic Activity
	He, Jing; Du, Yi-en; Bai, Yang; An, Jing; Cai, Xuemei; Chen, Yongqiang; Wang, Pengfei; Yang, Xiaojing; Feng, Qi
发表日期	2019
EISSN	1420-3049
卷号	24 期号:16
英文摘要	Anatase/rutile mixed-phase TiO2 nanoparticles were synthesized through a simple sol-gel route with further calcination using inexpensive titanium tetrachloride as a titanium source, which effectively reduces the production cost. The structural and optical properties of the prepared materials were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), and UV-vis adsorption. The specific surface area was also analyzed by Brunauer-Emmett-Teller (BET) method. The anatase/rutile mixed-phase TiO2 nanocomposites containing of rod-like, cuboid, and some irregularly shaped anatase nanoparticles (exposed {101} facets) with sizes ranging from tens to more than 100 nanometers, and rod-like rutile nanoparticles (exposed {110} facets) with sizes ranging from tens to more than 100 nanometers. The photocatalytic activities of the obtained anatase/rutile mixed-phase TiO2 nanoparticles were investigated and compared by evaluating the degradation of hazardous dye methylene blue (MB) under ultraviolet light illumination. Compared to the commercial Degussa P25-TiO2, the mixed-phase TiO2 nanocomposites show better photocatalytic activity, which can be attributed to the optimal anatase to rutile ratio and the specific exposed crystal surface on the surface. The anatase/rutile TiO2 nanocomposites obtained at pH 1.0 (pH1.0-TiO2) show the best photocatalytic activity, which can be attributed to the optimal heterojunction structure, the smaller average particle size, and the presence of a specific exposed crystal surface. The enhanced photocatalytic activity makes the prepared anatase/rutile TiO2 photocatalysts a potential candidate in the removal of the organic dyes from colored wastewater.
关键词	anatase rutile nanocomposites {101} facets {110} facets photocatalytic activity
学科领域	Biochemistry & Molecular Biology; Chemistry
语种	英语
WOS研究方向	Biochemistry & Molecular Biology ; Chemistry, Multidisciplinary
来源期刊	MOLECULES
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/112073
作者单位	Jinzhong Univ, Sch Chem & Chem Engn, Jinzhong 030619, Peoples R China
推荐引用方式 GB/T 7714	He, Jing,Du, Yi-en,Bai, Yang,et al. Facile Formation of Anatase/Rutile TiO2 Nanocomposites with Enhanced Photocatalytic Activity[J]. 中国科学院西北生态环境资源研究院,2019,24(16).
APA	He, Jing.,Du, Yi-en.,Bai, Yang.,An, Jing.,Cai, Xuemei.,...&Feng, Qi.(2019).Facile Formation of Anatase/Rutile TiO2 Nanocomposites with Enhanced Photocatalytic Activity.MOLECULES,24(16).
MLA	He, Jing,et al."Facile Formation of Anatase/Rutile TiO2 Nanocomposites with Enhanced Photocatalytic Activity".MOLECULES 24.16(2019).