Effects of silver content and morphology on the catalytic activity of silver-grafted titanium oxide nanostructure |
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Authors: | Muzafar A. Kanjwal Nasser A. M. Barakat Faheem A. Sheikh Woo-il Baek Myung Seob Khil Hak Yong Kim |
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Affiliation: | (1) Department of Bionano System Engineering, Chonbuk National University, Jeonju, 561-756, Republic of Korea;(2) Chemical Engineering Department, Faculty of Engineering, El-Minia University, El-Minia, Egypt;(3) Center for Healthcare Technology Development, Chonbuk National University, Jeonju, 561-756, Republic of Korea;(4) Department of Polymer Nano Science and Technology, Chonbuk National University, Jeonju, 561-756, Republic of Korea;(5) College of Veterinary Medicine, Chonbuk National University, Jeonju, 561-756, Republic of Korea;(6) Department of Environmental Engineering and Biotechnology, Energy and Environment Fusion Technology Center, Myongji University, Yongin, Kyonggi-do, 449-728, Republic of Korea;(7) Department of Textile Engineering, Chonbuk National University, Jeonju, 561-756, Republic of Korea |
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Abstract: | As titanium oxide is a well-known photocatalyst, we investigated the effects of silver content and nanostructural morphology on the photocatalytic degradation of two dyes, methylene blue and rhodamine B. Two nano-formulations were utilized, including nanofibers and nanoparticles. Silver-grafted titanium oxide nanofibers were synthesized using the electrospinning of silver nitrate/titanium isopropoxide/poly(vinyl acetate) sol-gel. The nanoparticulate form was obtained by calcination of a ground powder prepared from the same electrospun sol-gel. The results affirmed the advantage of the silver-grafted titanium oxide nanostructures over the silver-free ones. Increasing the silver content in the nanofibers led to increases in their surface area, which is an important parameter in heterogeneous catalytic chemical reactions. Therefore, the results strongly suggest the use of silver-grafted titanium oxide in a nanofibrous form. These results further support utilizing Agloaded titanium oxide nanofibers as a photocatalyst. |
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