A one-pot strategy for coupling chalcogenide nanocrystals with 1D oxides for solar-driven processes. Issue 48 (30th September 2015)

• Record Type: Journal Article
• Authors: Pathak, Pawan; Gupta, Satyajit; Resende, Aline C. S.; Subramanian, Vaidyanathan (Ravi)
• Is Part Of: Journal of materials chemistry. Volume 3:Issue 48(2015)
• Page Start: 24297
• Page End: 24302
• Publication Date: 2015-09-30
• Subjects: Materials -- Research -- Periodicals; Chemistry, Analytic -- Periodicals; Environmental sciences -- Research -- Periodicals; 543.0284
• DOI: 10.1039/c5ta07192e
• Languages: English
• ISSNs: 2050-7488

Abstract

Abstract : Deposition of 0D CdS on 1D TiO2 nanotubes. Abstract : This work presents a simple approach to the synthesis of CdS coatings on TiO2 nanotubes (T_NTs) and to form a heterostructured composite. A non-pressure based, single precursor one-pot approach performed at a temperature of 160 °C is used to assemble CdS on the TiO2 surface. Surface characterization using microscopy, X-ray diffraction, and elemental analysis indicates the formation of dense hexagonal 〈002〉 CdS nanocrystals along the nanotube walls and inter-tubular spacing. Optical measurements indicate that the CdS absorbs in the visible region and demonstrates a red shift with increased loading: up to 12 nm red shift is noted when the precursor concentration is increased from 0.1–3 mM. The 0D CdS/1D T_NT was also tested as an anode in a photoelectrochemical cell. The electrode produced the highest reported photocurrent of 9.3 mA cm −2 under UV-visible illumination when compared with similar systems. The method may be used in assembling efficient photoanodes for multifunctional solar-driven processes.