Next Article in Journal
Study of Reactive Melt Processing Behavior of Externally Plasticized Cellulose Acetate in Presence of Isocyanate
Previous Article in Journal
Experimental Study on the Electrochemical Anti-Corrosion Properties of Steel Structures Applying the Arc Thermal Metal Spraying Method
Open AccessCommunication

Surface Characteristics and Catalytic Activity of Copper Deposited Porous Silicon Powder

Nanoscience Research Laboratory, School of Chemical Sciences, Universiti Sains Malaysia, Penang 11800, Malaysia
*
Author to whom correspondence should be addressed.
These authors contributed equally to this work.
Materials 2014, 7(12), 7737-7751; https://doi.org/10.3390/ma7127737
Received: 29 August 2014 / Revised: 7 November 2014 / Accepted: 13 November 2014 / Published: 4 December 2014
(This article belongs to the Section Porous Materials)
Porous structured silicon or porous silicon (PS) powder was prepared by chemical etching of silicon powder in an etchant solution of HF: HNO3: H2O (1:3:5 v/v). An immersion time of 4 min was sufficient for depositing Cu metal from an aqueous solution of CuSO4 in the presence of HF. Scanning electron microscopy (SEM) analysis revealed that the Cu particles aggregated upon an increase in metal content from 3.3 wt% to 9.8 wt%. H2-temperature programmed reduction (H2-TPR) profiles reveal that re-oxidation of the Cu particles occurs after deposition. Furthermore, the profiles denote the existence of various sizes of Cu metal on the PS. The Cu-PS powders show excellent catalytic reduction on the p-nitrophenol regardless of the Cu loadings. View Full-Text
Keywords: porous silicon powder; Cu particles; surface properties; p-nitrophenol porous silicon powder; Cu particles; surface properties; p-nitrophenol
Show Figures

Figure 1

MDPI and ACS Style

Halim, M.Y.A.; Tan, W.L.; Bakar, N.H.H.A.; Bakar, M.A. Surface Characteristics and Catalytic Activity of Copper Deposited Porous Silicon Powder. Materials 2014, 7, 7737-7751.

Show more citation formats Show less citations formats

Article Access Map by Country/Region

1
Only visits after 24 November 2015 are recorded.
Back to TopTop