title: Fabrication of anion exchanger resin/nano-CdS composite photocatalyst for visible light RhB degradation.
abstract: A novel nanocomposite photocatalyst, D201-CdS beads (0.70-0.80 mm in diameter), was fabricated for visible light (λ > 420 nm) photodegradation of Rhodamine B (RhB). Sphalerite CdS nanoparticles (5-15 nm) were distributed within the outer layer of D201 for favorable visible light permeation. Ultraviolet-visible spectral changes of RhB solution indicated that efficient RhB photodegradation was achieved by D201-CdS under visible light irradiation. More attractively, negligible photocorrosion of the hybrid catalyst D201-CdS was demonstrated by the constant photodegradation efficiency and negligible CdS leaching during five-cycle batch runs. Besides the higher stability, D201-CdS is superior to CdS in terms of separation. The used nanocomposite can be readily separated from solutions by a simple filtration while a high speed centrifugation is needed for the separation of CdS. The above results suggested that the resultant D201-CdS nanocomposite catalyst is promising for practical application in environmental remediation.
authors: State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, People's Republic of China.
authors: Yingmei
authors: Y
authors: Xie
authors: Lu
authors: L
authors: Lv
authors: Shujuan
authors: S
authors: Zhang
authors: Bingcai
authors: B
authors: Pan
authors: Xiaoshu
authors: X
authors: Wang
authors: Qun
authors: Q
authors: Chen
authors: Weiming
authors: W
authors: Zhang
authors: Quanxing
authors: Q
authors: Zhang
mesh_terms: D000837:Anion Exchange Resins; D019187:Cadmium Compounds; D002384:Catalysis; D003343:Corrosion; D052918:Environmental Restoration and Remediation / Q000379:methods; D005456:Fluorescent Dyes / Q000528:radiation effects*; D008027:Light; D046529:Microscopy, Electron, Transmission; D053761:Nanocomposites / Q000737:chemistry* / Q000648:ultrastructure; D036103:Nanotechnology; D010316:Particle Size; D055668:Photochemical Processes; D012235:Rhodamines / Q000528:radiation effects*; D013053:Spectrophotometry; D013440:Sulfides; D014961:X-Ray Diffraction
chemical_list: D000837:Anion Exchange Resins; D019187:Cadmium Compounds; D005456:Fluorescent Dyes; D012235:Rhodamines; D013440:Sulfides; C034939:cadmium sulfide; C029773:rhodamine B