/Ag<sub>3</sub>PO<sub>4</sub>复合光催化剂的制备、表征及光催化性能

引用本文: 余长林, 魏龙福, 李家德, 何洪波, 方稳, 周晚琴. /Ag₃PO₄复合光催化剂的制备、表征及光催化性能[J]. 物理化学学报, 2015, 31(10): 1932-1938. doi: 10.3866/PKU.WHXB201509064 shu

Citation: YU Chang-Lin, WEI Long-Fu, LI Jia-De, HE Hong-Bo, FANG Wen, ZHOU Wan-Qin. Preparation and Characterization of /Ag₃PO₄ Composite Photocatalyst and Its Visible Light Photocatalytic Performance[J]. Acta Physico-Chimica Sinica, 2015, 31(10): 1932-1938. doi: 10.3866/PKU.WHXB201509064 shu

/Ag₃PO₄复合光催化剂的制备、表征及光催化性能

基金项目:
国家自然科学基金资助项目(21067004, 21263005, 21567008) (21067004, 21263005, 21567008)

江西省自然科学基金青年科学基金计划(20133BAB21003) (20133BAB21003)

江西省教育厅高等学校科技落地计划项目(KJLD14046) (KJLD14046)

江西省青年科学家培养项目(20122BCB23015) (20122BCB23015)

江西省远航工程项目资助

摘要:

以石墨粉为原料, 采用Hummers氧化法合成氧化石墨烯( ). 然后在超声作用下, 将不同含量的Ag₃PO₄沉积在上, 制备了一系列4% (w, 质量分数) /Ag₃PO₄、8% /Ag₃PO₄、16% /Ag₃PO₄和32% /Ag₃PO₄复合光催化剂. 对所制备的光催化剂运用N₂物理吸附、X射线粉末衍射(XRD)、扫描电子显微镜(SEM)、透射电子显微镜(TEM)、拉曼光谱、傅里叶变换红外(FT-IR)光谱、紫外-可见漫反射吸收光谱(UV-Vis DRS)等手段进行了表征, 并在可见光下考察了含量对Ag₃PO₄光催化降解甲基橙(MO)的性能. 结果表明, 能够和Ag₃PO₄实现均匀复合. 复合提高了催化剂的比表面积, 改善了催化剂的吸附性能. 复合16% 使Ag₃PO₄光催化活性提高最显著, 120 min内对MO的降解率达到83%, 是纯Ag₃PO₄光催化活性的7.5倍. 能提高催化剂的比表面积, 促进光生电子-空穴(e^-/h⁺)的分离, 产生更多活性自由基, 从而提高Ag₃PO₄光催化的活性和稳定性.

关键词:

English

Preparation and Characterization of /Ag₃PO₄ Composite Photocatalyst and Its Visible Light Photocatalytic Performance

1.
1 School of Metallurgy and Chemical Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, Jiangxi Province, P. R. China;
2 State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, Fuzhou 350002, P. R. China
Received Date: 25 June 2015
Available Online: 10 October 2015
Fund Project:
国家自然科学基金资助项目(21067004, 21263005, 21567008)

江西省自然科学基金青年科学基金计划(20133BAB21003)

江西省教育厅高等学校科技落地计划项目(KJLD14046)

江西省青年科学家培养项目(20122BCB23015)

江西省远航工程项目资助

Abstract:

Graphene oxide ( ) was fabricated from graphite powder by Hummers oxidation method and then, under ultrasonic irradiation, a series of /Ag₃PO₄ composite photocatalysts (4% (w, mass fraction) /Ag₃PO₄, 8% /Ag₃PO₄, 16% /Ag₃PO₄, 32% /Ag₃PO₄) were synthesized by a facile liquid deposition process. The products were characterized by N₂-physical adsorption, powder X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), Raman spectra, Fourier transform infrared (FT-IR) spectroscopg, and UV-Vis diffuse reflectance spectroscopy (UV-Vis DRS). The effect of content on the photocatalytic activity of Ag₃PO₄ was evaluated by photocatalytic degradation of methyl orange (MO) under visible light irradiation. The results show that can be easily dispersed into Ag₃PO₄, producing a well-connected /Ag₃PO₄ composite. Coupling of largely enhanced the surface area of the catalyst and the adsorption of MO. At the optimal content (16%), the degradation rate of MO over /Ag₃PO₄ was 83% after 120 min of light irradiation, exhibiting 7.5 times higher activity than that of pure Ag₃PO₄. The increase in photocatalytic activity and stability can be mainly attributed to the coupling of , which increased the surface area and suppressed the recombination rate of electron-hole (e^-/h⁺) pairs and generated greater numbers of active free radicals.

Key words:

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沈阳化工大学材料科学与工程学院沈阳 110142

/Ag₃PO₄复合光催化剂的制备、表征及光催化性能

English

Preparation and Characterization of /Ag₃PO₄ Composite Photocatalyst and Its Visible Light Photocatalytic Performance

CCS Chemistry：嵌段共聚物自组装成 “三明治”二维有机材料，实现纳米级压力传感功能

CCS Chemistry：颜徐州、鲍哲南：你的皮肤可能是一片SPMs

CCS Chemistry：工作高效不疲劳，只须让催化剂动起来

CCS Chemistry：静电组装导向聚合- 聚电解质纳米凝胶量化制备新策略

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Preparation and Characterization of /Ag3PO4 Composite Photocatalyst and Its Visible Light Photocatalytic Performance

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CCS Chemistry：颜徐州、鲍哲南： 你的皮肤可能是一片SPMs

CCS Chemistry：工作高效不疲劳，只须让催化剂动起来

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