Details

Autor(en) / Beteiligte

• Zhou, Bo
• Li, Yun
• Bai, Jinwu
• Li, Xuemin
• Li, Fengxiang
• Liu, Lu

Titel

Controlled synthesis of rh-In2O3 nanostructures with different morphologies for efficient photocatalytic degradation of oxytetracycline

Ist Teil von

• Applied surface science, 2019-01, Vol.464, p.115-124

Ort / Verlag

Elsevier B.V

Erscheinungsjahr

2019

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• [Display omitted] •Two different rh-In2O3 nanostructures were prepared by controlling reactive condition.•The both rh-In2O3 samples are mesoporous materials with narrower band gaps.•The two prepared rh-In2O3 nanostructures are used to degrade OTC for the first time.•The both obtained rh-In2O3 show better photocatalytic activities than a commercial In2O3. Two rhombohedral corundum-type In2O3 (rh-In2O3) nanostructures were successfully prepared through solvothermal synthesis of InOOH precursors combined with post-annealing treatment. One is a unique and monodisperse urchin-like rh-In2O3 with three dimensional structures; another is a small size rod-like rh-In2O3 with two dimensional nanostructures. The morphological difference of the two InOOH precursors was mainly controlled by sodium dodecyl sulfonate (SDS) which acted as a soft template during the synthesis. The measurements of X-ray photoelectron spectroscopy, nitrogen adsorption and optical absorption indicated that the both obtained rh-In2O3 nanostructures are mesoporous materials which may possess oxygen vacancies and narrower band gaps. The photocatalytic activities of as-prepared urchin-like and rod-like rh-In2O3 were investigated by degrading oxytetracycline (OTC) under ultraviolet light irradiation. Compared with a commercial In2O3, the two above rh-In2O3 nanostructures exhibited an absolute superiority on photo-degrading OTC. Furthermore, the probable photocatalytic reaction mechanism was discussed and proposed according to radical trapping experiment and the detection of degradation intermediates.