Skip to main content

Study on the Photocatalytic Activity of pn Junction Photocatalyst Cu2O/TiO2

Buy Article:

$113.00 plus tax (Refund Policy)

Abstract:

pn junction photocatalyst Cu2O/TiO2 was prepared by ball milling through doping Cu2O into TiO2 and using H2O solution as disperser. The pn junction photocatalyst Cu2O/TiO2 was characterized by UV-Vis diffuse reflection spectrum, Scanning electron microscopy (SEM), X-ray powder diffraction (XRD) and X-ray photoelectron spectroscopy (XPS). The photocatalytic activity of the photocatalyst was evaluated by photocatalytic reduction of Cr2O2−7 and photocatalytic oxidation of methyl orange (MO), respectively. The results showed that, for the photocatalytic reduction of Cr2O2−7, the optimum percentage of doped-Cu2O is 1.0% (weight percentage). The photoreduction activity of the pn junction Cu2O/TiO2 is much higher than that of TiO2 on the photocatalytic reduction of Cr2O2−7. However, the photooxidation activity of the pn junction photocatalyst Cu2O/TiO2 is much lower than that of TiO2 on the photocatalytic oxidation of methyl orange (MO). Namely, the pn junction photocatalyst Cu2O/TiO2 has higher photocatalytic reduction activity, but lower photocatalytic oxidation activity. Cu2O and TiO2 were coupled highly, forming the pn junction Cu2O/TiO2 photocatalyst. The photocatalytic activity of the pn junction Cu2O/TiO2 was discussed by the pn junction principle. Effect of ball milling time on the photocatalytic activity of pn junction photocatalyst Cu2O/TiO2 was also investigated.

Keywords: ACTIVITY; BALL MILLING; CHARACTERIZATION; CU2O/TIO2; P-N JUNCTION; PHOTOCATALYST

Document Type: Research Article

DOI: http://dx.doi.org/10.1166/jnn.2009.M67

Publication date: July 1, 2009

More about this publication?
  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
  • Editorial Board
  • Information for Authors
  • Subscribe to this Title
  • Terms & Conditions
  • Ingenta Connect is not responsible for the content or availability of external websites
asp/jnn/2009/00000009/00000007/art00067
dcterms_title,dcterms_description,pub_keyword
6
5
20
40
5

Access Key

Free Content
Free content
New Content
New content
Open Access Content
Open access content
Subscribed Content
Subscribed content
Free Trial Content
Free trial content
Cookie Policy
X
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more