C@CdS/埃洛石纳米管复合光催化剂一步热解法的制备及光降解性能

doi:10.3866/PKU.WHXB201311211

Abstract

Abstract:

A novel photocatalyst, C@CdS/halloysite nanotubes (HNTs), was synthesized using a facile and effective pyrolytic method. The as-prepared photocatalyst was characterized using scanning electron microscopy, transmission electron microscopy, X-ray diffraction, specific surface area measurements, and X-ray energy dispersive, ultraviolet-visible diffuse reflectance, Fourier-transform infrared, specific surface area, and Raman spectroscopies. The photocatalytic activity of the sample was evaluated by the degradation of tetracycline (TC) under visible-light irradiation. The influence of different pyrolysis temperatures on the photocatalytic degradation of TC was investigated. The optimal pyrolysis temperature was found to be 400 ℃. The photodegradation rate reached 86% in 60 min under visible-light irradiation. In addition, benefiting from the common effects of carbon, CdS, and HNTs, the photocatalyst exhibited good chemical stability. After being laid aside for one year, the photocatalytic efficiency was unaffected and the photocatalyst retained its high catalytic activity after three catalytic cycles. Based on our experimental results, the preparation mechanism and degradation of the intermediate product of TC are discussed.

Key words: Cadmium sulfide, Carbon, Halloysite nanotube, Photocatalytic degradation, Tetracycline, Reusability

Click here to download Supporting Info material in PDF type

XING Wei-Nan, NI Liang, YAN Xue-Sheng, LIU Xin-Lin, LUO Ying-Ying, LU Zi-Yang, YAN Yong-Sheng, HUO Peng-Wei. Preparation of C@CdS/Halloysite Nanotube Composite Photocatalyst Using One-Step Pyrolytic Method and Its Photodegradation Properties[J]. Acta Phys. -Chim. Sin. 2014, 30(1), 141-149. doi: 10.3866/PKU.WHXB201311211

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Preparation of C@CdS/Halloysite Nanotube Composite Photocatalyst Using One-Step Pyrolytic Method and Its Photodegradation Properties

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