TY - JOUR
T1 - In 2 O 3 /Bi 2 Sn 2 O 7 heterostructured nanoparticles with enhanced photocatalytic activity
AU - Xing, Yonglei
AU - Que, Wenxiu
AU - Yin, Xingtian
AU - He, Zuoli
AU - Liu, Xiaobin
AU - Yang, Yawei
AU - Shao, Jinyou
AU - Kong, Ling Bing
N1 - Publisher Copyright:
© 2016 Elsevier B.V.
PY - 2016/11/30
Y1 - 2016/11/30
N2 - In 2 O 3 /Bi 2 Sn 2 O 7 composite photocatalysts with various contents of cubic In 2 O 3 nanoparticles were fabricated by using impregnation method. A thriving modification of Bi 2 Sn 2 O 7 by an introduction of In 2 O 3 was confirmed by using X-ray diffraction, UV–vis diffuse reflectance spectrometry, transmission electron microscopy, high-resolution transmission electron microscopy and X-ray photoelectron spectroscopy. The samples composed of hybrids of In 2 O 3 and Bi 2 Sn 2 O 7 exhibited a much higher photocatalytic activity for the degradation of Rhodamine B under visible light, as compared with pure In 2 O 3 and Bi 2 Sn 2 O 7 nanoparticles. Optimized composition of the composite photocatalysts was 0.1In 2 O 3 /Bi 2 Sn 2 O 7 , which shows a rate constant higher than those of pure In 2 O 3 and Bi 2 Sn 2 O 7 by 4.06 and 3.21 times, respectively. Based on Mott-Schottky analysis and active species detection, the photoexcited electrons in the conduction band of In 2 O 3 and the holes in the valence band of Bi 2 Sn 2 O 7 participated in reduction and oxidation reactions, respectively. Hence, [Formula presented], [Formula presented] 2 − and h + were the main active species involved in the photocatalytic reaction of the In 2 O 3 /Bi 2 Sn 2 O 7 composite photocatalysts. The effective separation process of the photogenerated electron-hole pairs was testified by photocurrent test.
AB - In 2 O 3 /Bi 2 Sn 2 O 7 composite photocatalysts with various contents of cubic In 2 O 3 nanoparticles were fabricated by using impregnation method. A thriving modification of Bi 2 Sn 2 O 7 by an introduction of In 2 O 3 was confirmed by using X-ray diffraction, UV–vis diffuse reflectance spectrometry, transmission electron microscopy, high-resolution transmission electron microscopy and X-ray photoelectron spectroscopy. The samples composed of hybrids of In 2 O 3 and Bi 2 Sn 2 O 7 exhibited a much higher photocatalytic activity for the degradation of Rhodamine B under visible light, as compared with pure In 2 O 3 and Bi 2 Sn 2 O 7 nanoparticles. Optimized composition of the composite photocatalysts was 0.1In 2 O 3 /Bi 2 Sn 2 O 7 , which shows a rate constant higher than those of pure In 2 O 3 and Bi 2 Sn 2 O 7 by 4.06 and 3.21 times, respectively. Based on Mott-Schottky analysis and active species detection, the photoexcited electrons in the conduction band of In 2 O 3 and the holes in the valence band of Bi 2 Sn 2 O 7 participated in reduction and oxidation reactions, respectively. Hence, [Formula presented], [Formula presented] 2 − and h + were the main active species involved in the photocatalytic reaction of the In 2 O 3 /Bi 2 Sn 2 O 7 composite photocatalysts. The effective separation process of the photogenerated electron-hole pairs was testified by photocurrent test.
KW - Active species
KW - In O /Bi Sn O composite
KW - Photocatalytic activity
KW - Photocatalytic mechanism
KW - Rhodamine B
UR - https://www.scopus.com/pages/publications/84975882689
U2 - 10.1016/j.apsusc.2016.06.057
DO - 10.1016/j.apsusc.2016.06.057
M3 - 文章
AN - SCOPUS:84975882689
SN - 0169-4332
VL - 387
SP - 36
EP - 44
JO - Applied Surface Science
JF - Applied Surface Science
ER -