fulltext.study @t Gmail

How CdS nanoparticles can influence TiO2 nanotube arrays in solar energy applications?

Paper ID Volume ID Publish Year Pages File Format Full-Text
45639 46418 2015 7 PDF Available
Title
How CdS nanoparticles can influence TiO2 nanotube arrays in solar energy applications?
Abstract

•CdS nanoparticles were deposited on pure TNA by S-CBD method with different cycles.•X-ray diffractometery was indicated that fabricated TNAs were in anatase phase.•The optimum cycle for CdS deposition showed the best photocurrent of 28 mA/cm2.•The best PEC performance was attributed to 20 CdS immersion cycles.•A mechanism for obtaining optimum loading of CdS has been suggested significantly.

In this study, titanium dioxide (TiO2) nanotube array (TNA) films are fabricated via anodization of titanium (Ti) sheet. After annealing, the films consisted of well ordered, vertically oriented TNAs of 125 ± 6 nm diameter, 38 ± 3 nm wall thickness, and 2.9 ± 0.3 μm in length. Cadmium sulfide (CdS) nanoparticles are deposited on the synthesized TNAs by sequential-chemical bath deposition (S-CBD) method with different immersion cycle (n) to produce heterogeneous TNA/CdS-n (n = 10, 20 and 30) nanostructures. UV–visible absorption spectra of the samples revealed that the absorption edge of CdS modified TNAs was shifted to a higher wavelength with respect to the pure TNAs indicating band gap reduction of the TNA/CdS-n. Photocurrent response of the samples was changed with n, and the maximum photocurrent density (at steady state) of 28 ± 1 mA/cm2 (or 70 ± 2 mA/W) was obtained for the TNA/CdS-20 photoanode which is about 30 times higher than one for the pure TNA under similar condition.

Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slide

Keywords
TNA; Cadmium sulfide; Redox reactions; Visible light
First Page Preview
How CdS nanoparticles can influence TiO2 nanotube arrays in solar energy applications?
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us
Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis B: Environmental - Volume 162, January 2015, Pages 210–216
Authors
, , , , ,
Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us