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| 1 | Ag/TiO_2/freeze-dried graphene nanocomposite as a high performance photocatalyst under visible light irradiation显示文摘Ag/TiO_2/freeze-dried graphene nanocomposites have been prepared via a facile one-step solvothermal method for the photocatalytic degradation of Rh B under visible light irradiation. During the solvothermal process, reduction of graphene oxide and loading of Ag/TiO_2 nanoparticles on graphene sheets were achieved. Investigation of chemical state of products showed that covering of Ag/TiO_2 surface with higher weight ratio of graphene resulting in that Ag metals in Ag/TiO_2 were oxidized to Ag2 O in nanocomposite structure after solvothermal process. Degree of photocatalytic activity enhancement strongly depends on the coverage of Ag/TiO_2 surface by porous graphene. The sample of 1 wt% porous graphene hybridized Ag/TiO_2 showed the highest photocatalytic activity, which is related to high migration efficiency of photoinduced of electrons and reduction of electron–hole recombination rate due to high electrical conductivity of graphene. Expanding of absorption to visible light region was ascribed to surface plasmon resonance effect of Ag metals and presence of graphene. Investigation of photocatalytic performance of formic acid as a dye-less organic pollutant showed that dye sensitization effect of Rh B molecules during evaluation of photocatalytic performance was negligible. | Ziaeddin Jafari Nader Mokhtarian Ghader Hosseinzadeh Mousa Farhadian Asghar Faghihi Farideh Shojaie | 2016 | Journal of Energy Chemistry2016，25，3： | 4 |
| 2 | 水热法制备纳米三氧化钨及其催化性能显示文摘以钨酸铵为钨源,硫酸为调节剂,硫酸铵为辅助剂,采用水热法获得三氧化钨粉末,然后经高温煅烧后得到晶体三氧化钨.通过热重分析(TGA)、X射线粉末衍射(XRD)、扫描电镜(SEM)和X射线光电子能谱(XPS)等手段对其组成和尺寸进行表征.结果表明,所得为斜方晶系纳米三氧化钨,在催化H_2O_2氧化环己酮合成己二酸的反应中表现出较高的催化活性,可使己二酸产率达75.3%. | 李红 边孟孟 | 2016 | 西安工程大学学报2016，30，1： | 2 |
| 3 | Improved photocatalytic activity of TiO_2 produced by an alcohothermal approach through in-situ decomposition of NH_4HCO_3显示文摘High crystallinity of TiO_2 was prepared by a modified alcohothermal method, in which titanium isopropoxide was used as the titania precursor, absolute ethanol as the reaction medium, and NH_4HCO_3 as the raw materials for release of water, ammonia and carbon dioxides via in-situ decomposition. The X-ray powder diffraction(XRD) and transmission electron microscope(TEM) measurements showed that water and ammonia from the in-situ decomposition of NH_4HCO_3 played an important role in conducting the size, shape, crystallinity and microstructure of TiO_2. The photoluminescence spectroscopy and photocurrent measurements indicated that enhanced crystallinity could hinder the recombination and promote the separation of electron-hole pairs in TiO_2, which contribute to the improvement of photocatalytic activity.Methyl orange photodegradation under UV light confirmed that high crystallinity of TiO_2 did present a high photocatalytic activity due to the effective separation of photoinduced charges. | Changyuan Hu Chengjiang Lian Shizheng Zheng Xiaoyu Li Tiewen Lu Quanhong Hu Shuwang Duo Rongbin Zhang Yingying Sun Fei Chen | 2016 | Journal of Energy Chemistry2016，25，3： | 0 |
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