Polyaniline-modified 3D-flower-like molybdenum disulfide composite for efficient adsorption/photocatalytic reduction of Cr(VI)

详细信息    查看全文

• 作者：Yang Gao ; Changlun Chen ; ^{clchen@ipp.ac.cn" class="auth_mail" title="E-mail the corresponding author} ; Xiaoli Tan ; Huan Xu ; Kairuo Zhu
• 关键词：Polyaniline ; MoS2 ; Adsorption ; Photocatalytic reduction ; Cr(VI)
• 刊名：Journal of Colloid and Interface Science
• 出版年：2016
• 出版时间：15 August 2016
• 年：2016
• 卷：476
• 期：Complete
• 页码：62-70
• 全文大小：1255 K

文摘

Polyaniline (PANI) was modified onto 3D flower-like molybdenum disulfide (MoS₂) to prepare a novel organic–inorganic hybrid material, PANI@MoS₂. PANI@MoS₂ was characterized by scanning and transmission electron microscopy, Fourier transform infrared spectroscopy, X-ray diffraction and thermogravimetric analysis. The results indicate that PANI was modified onto MoS₂. PANI@MoS₂ was applied as an adsorbent to remove Cr(VI) from aqueous solutions, and the adsorption isotherms fit well to the Langmuir model; the maximum removal capacity of Cr(VI) by PANI@MoS₂ was 526.3 and 623.2 mg/g at pH 3.0 and 1.5, respectively. PANI@MoS₂ exhibited an enhanced removal capacity of Cr(VI) in comparison with bare MoS₂ and other adsorbents. The adsorption of Cr(VI) on PANI@MoS₂ might be attributed to the complexation between the amine and imine groups on the surface of PANI@MoS₂ with Cr(VI). This study implies that the hybrid material PANI@MoS₂ is a potential adsorbent for Cr(VI) removal from large volumes of aqueous solutions.