| Biography | |
|---|---|
 Prof. King-Chuen Lin National Taiwan University, China |
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| Title: Some Nonamaterials in Applications of Sensing and Catalysis | |
| Abstract: Palladium nanoparticles (Pd NPs) immobilized on a garlic skin-derived activated carbons (GACs) was synthesized. The morphology, structure, surface compositions, and textural properties of the GACs and Pd@GAC catalyst were examined by a variety of physicochemical characterization techniques which revealed a dispersion of Pd NPs with average particle size of ca. 21 nm on sheet-like graphitized GACs. The Pd@GAC catalyst, which can be facilely prepared with biowaste feedstocks, exhibited excellent catalytic performances for efficient reduction of Cr(VI) with extraordinary stability and recyclability over at least five repeated catalytic test cycles. On the other hand, we reported a simple and novel surfactant-free synthesis of flower-like strontium doped nickel oxide nanorods (SNO NRs) via co-precipitation method for electrochemical sensing of quercetin (QCT). The structure and morphology of as-synthesized flower-like SNO NRs were characterized. Then, CV, EIS, and DPV were used to examine its electrochemical properties. Under optimized condition, the electrochemical detection of QCT demonstrated a low detection potential of 0.3 V (vs. Ag/AgCl), and achieved a higher oxidation peak current compared to other modified electrodes in PB (pH 5.0). The voltammetric current response was found to linearly increase with increasing concentration range from 0.0168.53 µM, along with a low detection limit of 1.98 nM, and high sensitivity of 2.1055 µA mM cm2. The sensor also shows good selectivity and satisfactory recovery for real sample (apple and grape juice) analysis. Further, we present ultra-sensitive sensing of a prostate-specific antigen (PSA), which is used as a biomarker to detect prostate cancer, using a molybdenum series (MoO3, MoS2, and MoSe2) of two-dimensional nanosheets (2D NSs). The design of a 2D NS-based PSA aptamer sensor system was demonstrated based on a fluorescence turn-on mechanism in the presence of a target. The detection limit of PSA was achieved to be 13 pM for MoO3 NSs, whereas the MoS2 and MoSe2 systems exhibited a detection limit of 72 and 157 pM, respectively. The in vitro bioimaging measurements were also performed using confocal fluorescence microscopy. Herein, PSA detection was successfully demonstrated in human embryonic kidney 293T (HEK) live cells. Moreover, the MoO3, MoS2, and MoSe2 NSs exhibit excellent biocompatibility and low toxicity; thus, these 2D NSs can be used as a promising sensor platform to detect prostate cancer. | |
| Biography: King-Chuen Lin is a Distinguished Professor of the Department of Chemistry at National Taiwan University and a Distinguished Research Fellow of National Science Council, Taiwan. He received his B.S. degree in Chemistry from National Taiwan University, Taiwan, his PhD in Chemistry from Michigan State University, USA, and his postdoctoral career at Cornell University. His research interests are photodissociation and reaction dynamics in gas and condensed phases, atmospheric chemistry, materials designed for sensors and catalysts, and single molecule spectroscopy. He received Academic Award of Ministry of Education, Taiwan, in 2014, and Richard B. Bernstein Award in International Conference on Stereodynamics-2018. He now serves as an Associate Editor for J. Chin. Chem. Soc.(Taipei) and a member of Editorial Board for Scientific Reports (Nature publisher), Journal of Analytical and Bioanalytical Techniques (Gavin Publishers), and J. of Modern Chemical Sciences (Herald Scholarly Open Access). He has published more than 204 peer-reviewed papers and edited one book on reaction dynamics and chemical kinetics. | |
