Su-Il In
Daegu Gyeongbuk Institute of Science and Technology
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Featured researches published by Su-Il In.
RSC Advances | 2014
Minju Kim; Abdul Razzaq; Young Kwang Kim; Soonhyun Kim; Su-Il In
Photocatalytic water splitting is a significant and promising technology to generate hydrogen, an alternative and clean future fuel. The present work describes the preparation and application of a TiO2 based photocatalyst with an effective architecture focused on the key issues of photocatalyst reusability and photocatalytically stable activity. TiO2 nanoparticles were embedded onto carbon nanofibers (CNF) acting as a support. The electrospinning method was adopted for fabrication of TiO2 embedded carbon nanofibers (TiO2/CNF). The photocatalytic activity of the TiO2/CNF under simulated light was improved by Pt co-catalyst photodeposition. The morphological and structural properties of TiO2/CNF and Pt photodeposited TiO2/CNF (Pt–TiO2/CNF) were investigated by field emission scanning electron microscopy (FESEM), high resolution transmission electron microscopy (HRTEM) and powder X-ray diffraction (XRD) techniques. The surface characteristics of these materials were investigated by X-ray photoelectron spectroscopy (XPS), photocurrent and photoluminescence (PL) measurements were also used to elaborate the effect of Pt photodeposition. The reusability and photocatalytic stability of Pt–TiO2/CNF was tested by the generation of approximately the same amounts of photocatalytic hydrogen with the same sample under the same conditions of illumination. The highest production rate of photocatalytic hydrogen generation achieved under simulated light was 3.5 μmol (after 3 hours of illumination with 0.02 g of photocatalyst). These tests show that Pt–TiO2/CNF is a reusable photocatalyt with a promising stable photocatalytic performance for solar energy conversion applications.
RSC Advances | 2016
Kidon Kim; Abdul Razzaq; Saurav Sorcar; Yiseul Park; Craig A. Grimes; Su-Il In
A major concern facing global society is the ongoing excessive release of CO2 into the atmosphere where it acts as a heat-trapping greenhouse gas. One approach to helping control atmospheric CO2 concentrations is to use solar energy to convert CO2 into useful products, namely hydrocarbons, by use of specifically designed photocatalytic materials. While numerous photocatalysts have been investigated for use in CO2 reduction, the field remains in its infancy with, overall, relatively poor photoconversion efficiencies and product selectivity. This study reports the synthesis and design of a mesoporous noble metal free p-type Cu2ZnSnS4 (CZTS)/n-type TiO2 heterojunction photocatalyst for broad spectrum light absorption, enhanced charge separation and transfer that, in turn, enhances photocatalytic CO2 conversion. A maximum methane production rate of 118.75 ppm g−1 h−1 is observed, which represents a methane evolution rate approximately 12 times greater than that of pure TiO2. The key factors contributing to the enhanced photocatalytic performance seen in the mesoporous CZTS–TiO2 samples include improved light absorption, high surface area, and effective charge separation.
Rapid Communication in Photoscience | 2013
Hye Rim Kim; Abdul Razzaq; Hyo Jung Heo; Su-Il In
【Photoreduction of
International Journal of Nanomedicine | 2015
Jung-Hee Kim; Hyerim Kim; Boram Lee; Eun-Sook Choi; Su-Il In; Eunjoo Kim
CO_2
Scientific Reports | 2017
Bo Ram Lee; Hye Rim Kim; Eun Sook Choi; Jung-Hoon Cho; Nam-Jun Kim; Jung Hee Kim; Kyeong Min Lee; Abdul Razzaq; Han Saem Choi; Yun Ju Hwang; Craig A. Grimes; Bong-Hyo Lee; Eun Joo Kim; Su-Il In
into hydrocarbon fuels on the surface of photocatalyst is one of the breakthroughs in the field of photocatalysis. At present various approaches have been investigated with the aim of increasing the
Journal of Acupuncture and Meridian Studies | 2018
Saurav Sorcar; Craig A. Grimes; Su-Il In
CO_2
Energy and Environmental Science | 2018
Saurav Sorcar; Jamie Thompson; Yunju Hwang; Young Ho Park; Tetsuro Majima; Craig A. Grimes; James R. Durrant; Su-Il In
conversion efficiency. The reactor for photoconversion of
Energy & Fuels | 2011
Dongdong Qin; Chun-Lan Tao; Su-Il In; Zheng-Yin Yang; Thomas E. Mallouk; Ningzhong Bao; Craig A. Grimes
CO_2
Applied Catalysis B-environmental | 2015
Minju Kim; Young Kwang Kim; Sang Kyoo Lim; Soonhyun Kim; Su-Il In
plays a vital role in experimental setup. In this work an attempt was made to testify a newly designed the photoreactor for conversion of
Carbon | 2016
Abdul Razzaq; Craig A. Grimes; Su-Il In
CO_2