نتایج جستجو برای: photocatalytic activities

تعداد نتایج: 392203  

Journal: :Physical chemistry chemical physics : PCCP 2014
Di Li Xiaojuan Bai Jing Xu Xinguo Ma Yongfa Zhu

CdWO4 nanorod photocatalysts were synthesized by a hydrothermal method. CdWO4 nanorod photocatalysts showed highly efficient photocatalytic activity for the degradation of methylene blue under ultraviolet light irradiation. On the basis of the experiment results, the difference in photocatalytic activities of the samples was mainly attributed to surface area, surface hydroxyl groups and defects...

Journal: :Chemical communications 2010
Yi Zeng Xi Wang Hao Wang Yang Dong Ying Ma Jiannian Yao

We report a simple hard template strategy to prepare multi-shelled titania hollow spheres, which showed enhanced photocatalytic activities in comparison with sphere-in-sphere structures and nanoparticles.

2017
Wei Li Guojing Wang Chienhua Chen Jiecui Liao Zhengcao Li

In this research, ZnO nanowires doped with Mn2+ and Co2+ ions were synthesized through a facile and inexpensive hydrothermal approach, in which Mn2+ and Co2+ ions successfully substituted Zn2+ in the ZnO crystal lattice without changing the morphology and crystalline structure of ZnO. The atomic percentages of Mn and Co were 6.29% and 1.68%, respectively, in the doped ZnO nanowires. The photoca...

Journal: :Chemical science 2015
Shuai Yuan Tian-Fu Liu Dawei Feng Jian Tian Kecheng Wang Junsheng Qin Qiang Zhang Ying-Pin Chen Mathieu Bosch Lanfang Zou Simon J Teat Scott J Dalgarno Hong-Cai Zhou

We successfully assembled the photocatalytic titanium-oxo cluster and photosensitizing porphyrinic linker into a metal-organic framework (MOF), namely PCN-22. A preformed titanium-oxo carboxylate cluster is adopted as the starting material to judiciously control the MOF growth process to afford single crystals. This synthetic method is useful to obtain highly crystalline titanium MOFs, which ha...

In order to improve photocatalytic activities of the pure anatase TiO2 under UV and visible light irradiations, a novel and efficient N-doped TiO2 photocatalyst was prepared by sol-gel method. N-doped titania is prepared using the various nitrogen sources such as: triethylamine, N,N,N’,N’-tetramethylethane-1,2-diamine, ethyldiamine, 1,2-phenylenediamine, propanolamine, and...

2016
Xing Zhang Chu-Ya Wang Li-Wei Wang Gui-Xiang Huang Wei-Kang Wang Han-Qing Yu

A series of BiOBrxI(1-x) solid solutions were explored as novel visible light-sensitive photocatalysts. These BiOBrxI(1-x) solid-solution photocatalysts grew into two-dimensional nanoplates with exposed (001) facets and possessed continuously modulated band gaps from 2.87 to 1.89 eV by decreasing the Br/I ratio. The photocatalytic activities of these samples were measured, and the samples exhib...

2015
Ma Emma Borges Dulce María García Tania Hernández Juan Carlos Ruiz-Morales Pedro Esparza

Water pollution from emerging contaminants (ECs) or emerging pollutants is an important environmental problem. Heterogeneous photocatalytic treatment, as advanced oxidation treatment of wastewater effluents, has been proposed to solve this problem. In this paper, a heterogeneous photocatalytic process was studied for emergent contaminants removal using paracetamol as a model contaminant molecul...

Journal: :Philosophical transactions. Series A, Mathematical, physical, and engineering sciences 2013
Tianyi Zhao Yong Zhao Lei Jiang

Photocatalysis has emerged as a promising technique owing to its valuable applications in environmental purification. With the demand of building effective photocatalyst materials, semiconductor investigation experienced a developing process from simple chemical modification to complicated morphology design. In this review, the general relationship between morphology structures and photocatalyt...

2017
Yue Meng Wei Luo Shengjie Xia Zheming Ni Xiaoguang Duan

Salen–metal complexes (SalenM) were successfully intercalated into ZnCr layered double hydroxides (LDHs) through coprecipitation method, then a series of novel organic–inorganic hybrid materials were obtained. The structure and properties of the materials were thoroughly characterized by inductively-coupled plasma atomic emission spectrometry (ICP-AES), powder X-ray diffraction (XRD), Fourier t...

بدیعیان باغ‌سیاهی, فاطمه , موسوی, ملیحه , یگانه, محبوبه ,

Extension of the optical response with the high efficiency in visible region of the solar light spectrum is one of the research goals of the photocatalysts based on TiO2. In this work, Cr doped TiO2 was synthesized by sol-gel method at different annealing temperature of 400, 600 and 800 oC in order to increase the optical absorption of TiO2. Upon increasing the annealing temperature, the anatas...

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