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Hsiao, CL, Chen JT, Hsu HC, Liao YC, Tseng PH, Chen YT, Feng ZC, Tu LW, Chou MC, Chen LC, Chen KH.  2010.  Heteroepitaxy of m-plane (1010) InN on (100)-LiAlO2 substrates and its strong anisotropic optical behaviors. ,J. Appl. Phys.. 107:073502.
Wu, JJ, Liu SC, Wu CT, Chen* KH, Chen LC.  2002.  Heterostructures of ZnO-Zn coaxial nanocables and ZnO nanotubes. Appl. Phys. Lett.. 81:1312-1314.
Dhara, S, Datta A, Wu CT, Lan ZH, Chen* KH, Wang YL, Hsu CW, Shen CH, Chen LC, Chen CC.  2004.  Hexagonal-to-cubic phase transformation in GaN nanowires by Ga+ implantation. Appl. Phys. Lett.. 84:5473-5475.
Lin, YG, Chen YC, Miller JT, Chen LC, Chen KH, Hsu YK.  2014.  Hierarchically porous Ca-containing MnO2 nanorod bundles with superior photoelectrochemical activity. ChemCatChem . 6:1684.
Tarntair, FG, Chen LC, Wei SL, Hong WK, Chen KH, Cheng HC.  2000.  High current density field emission from arrays of carbon nanotubes and diamond-clad Si tips. J. Vac. Sci. Tech. B 18:1207-1211.
Yang, FH, Yang* YJ, Hwang JH, Chen KH, Li TH, Hwa LG, Chen LC.  2002.  High growth rate deposition of oriented InN films. Thin Solid Films. 405:194-197.
Han, HC, Chong CW, Wang SB, Heh D, Tseng CA, Huang YF, Chattopadhyay S, Chen KH, Lin CF, Lee JH, Chen LC.  2013.  High K nanophase zinc oxide on biomimetic silicon nanotip array as super-capacitors. Nano Letters. 13:1422-1428.
Wang, CH, Shih HC, Tsai YT, Du HY, Chen LC, Chen* KH.  2006.  High methanol oxidation activity of electrocatalysts supported by directly grown nitrogen containing carbon nanotubes on carbon cloth. Electrochimica Acta. 52:1612-1617.
Du, HY, Wang CH, Hsu HC, Chang ST, Yen SC, Chen LC, Viswanathan B, Chen* KH.  2011.  High performance of catalysts supported by directly grown PTFE-free micro-porous CNT layer in a proton exchange membrane fuel cell. J. Mater. Chem.. 21:2512-2516.
Wang, CH, Du H-Y, Tsai YT, Chen CP, Huang CJ, Chen LC, Chen* KH, Shih HC.  2007.  High performance of low electrocatalysts loading on CNT directly grown on carbon for DMFC. J. Power Sources. 171:55-62.
Du, HY, Wang CH, Yang CS, Hsu HC, Chang ST, Huang HC, Lai SW, Chen JC, Yu LT, Chen LC, Chen KH.  2014.  A high performance polybenzimidazole-CNT hybrid electrode for high-temperature proton exchange membrane fuel cells. J. of Mater. Chem. . 2:7015-7019.
Lin, CH, Chen RS, Chen TT, Chen HY, Chen* YF, Chen KH, Chen LC.  2008.  High photocurrent gain in SnO2 nanowires. Appl. Phys. Lett.. 93:112115.
T.R. Lu, Kuo* CT, Yang JR, Chen LC, Chen KH, Chen TM.  1999.  High purity nano-crystalline carbon nitride films prepared at ambient temperature by ion beam sputtering. Surface and Coatings Technology . 115:116-122.
Hsu, Y-K, Chen Y-C, Lin Y-G, Chen L-C, Chen K-H.  2012.  High-cell-voltage supercapacitor of carbon nanotube/carbon cloth operating in neutral aqueous solution. Journal of Materials Chemistry. 22:3383-3387.
Thang, NQ, Sabbah A, Chen L-C, Chen K-H, Thi CM, Viet PV.  2021.  High-efficient photocatalytic degradation of commercial drugs for pharmaceutical wastewater treatment prospects: A case study of Ag/g-C3N4/ZnO nanocomposite materials, 2021. Chemosphere. 282:130971. AbstractWebsite

Pharmaceutical drugs' removal from wastewater by photocatalytic oxidation process is considered as an attractive approach and environmentally friendly solution. This report aims to appraise the practical application potential of Ag/g-C3N4/ZnO nanorods toward the wastewater treatment of the pharmaceutical industry. The catalysts are synthesized by straightforward and environmentally-friendly strategies. Specifically, g-C3N4/ZnO nanorods heterostructure is constructed by a simple self-assembly method, and then Ag nanoparticles are decorated on g-C3N4/ZnO nanorods by a photoreduction route. The results show that three commercial drugs (paracetamol, amoxicillin, and cefalexin) with high concentration (40 mg L−1) are significantly degraded in the existence of a small dosage of Ag/g-C3N4/ZnO nanorods (0.08 g L−1). The Ag/g-C3N4/ZnO nanorods photocatalyst exhibits degradation performance of paracetamol higher 3.8, 1.8, 1.3 times than pristine g-C3N4, ZnO nanorods, and g-C3N4/ZnO nanorods. Furthermore, Ag/g-C3N4/ZnO nanorods have an excellent reusability and a chemical stability that achieved paracetamol degradation efficiency of 78% and remained chemical structure of the photocatalyst after five cycles. In addition, the photocatalytic mechanism explanation and comparison of photocatalytic drugs’ degradation ability have also been discussed in this study.

Chen, RS, Yang TH, Chen HY, Chen* LC, Chen* KH, Yang YJ, Su CH, Lin CR.  2009.  High-gain photoconductivity in semiconducting InN nanowires. Appl. Phys. Lett.. 95:162112.
Hsiao, CL, Liu TW, Wu CT, Hsu HC, Chen* LC, Hsiao WY, Yang CC, Gällström A, Holtz P, Hsu GM, Chen* KH.  2008.  High-phase-purity zinc-blende InN on r-plane sapphire substrate with controlled nitridation pretreatment. Appl. Phys. Lett.. 92:111914.
Chen, KH, Lai YL, Chen LC, Wu JY, Kao FJ.  1995.  High-temperature Raman Study in CVD Diamond. Thin Solid Films. 270:143.
Pathak, A, Chiou GR, Gade NR, Usman M, Mendiratta S, Luo T-T, Tseng TW, Chen J-W, Chen F-R, Chen K-H, Chen L-C, Lu K-L.  2017.  High-κ Samarium-Based Metal–Organic Framework for Gate Dielectric Applications. ACS Appl. Mater. Interfaces. 9(26):21872–21878.
Sabhapathy, P, Liao C-C, Chen W-F, Chou T-chin, Shown I, Sabbah A, Lin Y-G, Lee J-F, Tsai M-K, Chen K-H, Chen L-C.  2019.  Highly efficient nitrogen and carbon coordinated N–Co–C electrocatalysts on reduced graphene oxide derived from vitamin-B12 for the hydrogen evolution reaction, 2019. Journal of Materials Chemistry A. 7(12):7179-7185.: The Royal Society of Chemistry AbstractWebsite

Exploring electrocatalysts composed of earth-abundant elements for a highly efficient hydrogen evolution reaction (HER) is scientifically and technologically important for electrocatalytic water splitting. In this work, we report HER properties of acid treated pyrolyzed vitamin B12 supported on reduced graphene oxide (B12/G800A) that shows an extraordinarily enhanced catalytic activity with low overpotential (115 mV vs. RHE at 10 mA cm−2), which is better than that of most traditional nonprecious metal catalysts in acidic media. Stability tests through long-term potential cycles and at a constant current density confirm the exceptional durability of the catalyst. Notably, the B12/G800A catalyst exhibits extremely high turnover frequencies per cobalt site in acid, for example, 0.85 and 11.46 s−1 at overpotentials of 100 and 200 mV, respectively, which are higher than those reported for other scalable non-precious metal HER catalysts. Moreover, it has been conjectured that the covalency of Co–C and Co–N bonds affects HER activities by comparing the extended X-ray absorption fine structure (EXAFS) spectra of the B12/G800A. High-temperature treatment can modify the Co-corrin structure of B12 to form Co–C bonds along with Co–N, which broadens the band of cobalt, essentially lowering the d-band center from its Fermi level. The lower d-band center leads to a moderate hydrogen binding energy, which is favorable for hydrogen adsorption and desorption.

Chen, YC, Hsu YK, Lin YG, Lin YK, Horng YY, Chen LC, Chen KH.  2011.  Highly flexible supercapacitors with manganese oxide nanosheet/carbon cloth electrode. Electrochem. Acta. 56:7124-7130.
Chang, H-C, Chen T-H, Sankar R, Yang Y-J, Chen L-C, Chen K-H.  2020.  Highly improved thermoelectric performance of BiCuTeO achieved by decreasing the oxygen content, 2020. 15:100248. AbstractWebsite

BiCuTeO is a promising thermoelectric material owing to its intrinsically low thermal conductivity and high carrier concentration. This study investigated the influence of stoichiometric oxygen deficiencies on the thermoelectric performance of BiCuTeO. Bulk BiCuTeO1−x (0.16 ≥ x) samples were prepared by a conventional solid state reaction and pelleted by hot pressing. Synchrotron X-ray diffraction, electron probe X-ray microanalysis, scanning electron microscopy, and transmission electron microscopy characterized the samples. A maximum value of 1.06 was achieved for the dimensionless figure of merit ZT at 673 K for BiCuTeO0.88, which is approximately 49% better than the current maximal ZT value for BiCuTeO. The power factor was noticeably improved owing to increases in the electrical conductivity and Seebeck coefficient. Moreover, the optimal oxygen deficiency could introduce nanoparticles, resulting in reduced thermal conductivity. The findings will be important for the future development of metal oxide thermoelectric materials for use in practical thermoelectric devices.

Nataraj, SK, Wang CH, Huang HC, Du HY, Wang SF, Chen YC, Chen LC, Chen KH.  2012.  Highly proton-selective biopolymer layer-coated ion-exchange membrane for direct methanol fuel cells. ChemSusChem.. 5:392-395.
Bhusari, DM, Chen KH, Yang TR, Lin ST, Wang TY, Chen LC.  1998.  Highly transparent nano-crystalline diamond films grown by microwave CVD. Solid State Comm.. 107:301-305.
Chen*, KH, Bhusari DM, Yang JR, Lin ST, Wang TY, Chen LC.  1998.  Highly transparent nano-crystalline diamond films via substrate pretreatment and methane fraction optimization. Thin Solid Films. 332:34-39.