Index Catalog // ScholarsArchive@OSU

Continuous precipitation of ceria nanoparticles from a continuous flow micromixer

Creator:: Tseng, Chih Heng T., Paul, Brian K., Chang, Chih-Hung, and Engelhard, Mark H.
Abstract:: Cerium oxide nanoparticles were continuously precipitated from a solution of cerium(III) nitrate and ammonium hydroxide using a static microchannel T-mixer. Tmixer synthesis results were compared with synthesis results from batch precipitation. Findings show that the method of mixing is important in the ceria precipitation process. Uniform porous film structures and...
Resource Type:: Article
Full Text:: nanoparticles from a continuous flow micromixer Chih Heng T. Tseng & Brian K. Paul & Chih-Hung Chang & Mark H

Near-infrared absorption gas sensing with metal-organic framework on optical fibers

Creator:: Chong, Xinyuan, Kim, Ki-Joong, Li, Erwen, Zhang, Yujing, Ohodnicki, Paul R., Chang, Chih-Hung, and Wang, Alan X.
Abstract:: Despite significant advantages in terms of portability and cost, near-infrared (NIR) gas sensing still remains a great challenge due to its relatively weak overtone absorption from the fundamental vibrational bond absorption at the mid-IR frequency. In this paper, we demonstrated ultra-sensitive NIR gas sensing for carbon dioxide (CO₂) at 1.57...
Resource Type:: Article
Full Text:: National Science Foundation under grant No. 1449383. Xinyuan Chong and Yujing Zhang are sponsored by the

Visible-light-sensitive nanoscale Au-ZnO photocatalysts

Creator:: Kim, Ki-Joong, Kreider, Peter B., Chang, Chih-Hung, Park, Chul-Min, and Ahn, Ho-Geun
Abstract:: The role of gold nanoparticles supported on ZnO in photocatalytic activity for dye degradation was investigated. To do this, gold nanoparticles supported on ZnO (Au-ZnO) were prepared using a simple co-precipitation method. The prepared nanocatalyst was characterized by high resolution transmission electron microscopy, X-ray diffraction, temperature programmed reduction, X-ray photoelectron...
Resource Type:: Article
Full Text:: Nanotechnol 11(1):681 -685 Chen B, Zhang H, Du N, Li D, Ma X, Yang D (2009) Hybrid nanostructures of Au

Nanostructured ZnO as Biomimetic Anti-reflective Coatings on Textured Silicon Using a Continuous Solution Process

Creator:: Han, Seung-Yeol, Paul, Brian K., and Chang, Chih-hung
Abstract:: A novel table-top, microreactor-assisted nanomaterial deposition (MAND™) process, which combines the merits of microreaction technology with solution-phase nanomaterial synthesis and film deposition, was used to grow a nanostructured ZnO anti-reflective coating on a textured silicon substrate from aqueous solution. The subwavelength, anti-reflective nanostructures mimicked the structure and performance of the...
Resource Type:: Article
Full Text:: . Mater. Chem., 2010, 20, 8134- 8138. 12. J.-Q. Xi, M. F. Schubert, J. K. Kim, E. F. Schubert, M. Chen

XingZhenyuChemistryReducingCO2DenseNanoporous.pdf

Creator:: Xing, Zhenyu, Wang, Bao, Gao, Wenyang, Pan, Changqing, Halsted, Joshua K., Chong, Elliot S., Lu, Jun, Wang, Xingfeng, Luo, Wei, Chang, Chih-Hung, Wen, Youhai, Ma, Shengqian, Amine, Khalil, and Ji, Xiulei
Abstract:: Converting CO2 to valuable materials is attractive.Herein, we report using simple metallothermic reactions to reduce atmospheric CO2 to dense nanoporous graphene. By using a Zn/Mg mixture as a reductant, the resulted nanoporous graphene exhibits highly desirable properties: high specific surface area of 1900 m2/g, a great conductivity of 1050 S/m...
Full Text:: –1639. [31] F. Zhang, T.F. Zhang, X. Yang, L. Zhang, K. Leng, Y. Huang, Y.S. Chen, Energy Environ. Sci

Two-step continuous-flow synthesis of CuInSe₂ nanoparticles in a solar microreactor

Creator:: Kreider, Peter B., Kim, Ki-Joong, and Chang, Chih-Hung
Abstract:: A novel method of copper indium diselenide nanoparticle (CuInSe₂ NP) synthesis using a two-step, continuous flow, solar microreactor is reported here. This method allows for exceedingly fast heating and short reaction times using only radiative heat transfer from simulated, concentrated solar radiation. Chalcopyrite and sphalerite CuInSe₂ phases have both been...
Resource Type:: Article
Full Text:: , L. Zhang, Y. Shi and J. Chen, J. Cryst. Growth, 2007, 305, 99-103. 12. S. Shirakata, H. Kubo, C

HanKatherineChemBiolEnvironEngineeringNumericalModelingSub-Wavelength.pdf

Creator:: Han, Katherine and Chang, Chih-Hung
Abstract:: This paper reviews the current progress in mathematical modeling of anti-reflective subwavelength structures. Methods covered include effective medium theory (EMT), finite-difference time-domain (FDTD), transfer matrix method (TMM), the Fourier modal method (FMM)/rigorous coupled-wave analysis (RCWA) and the finite element method (FEM). Time-based solutions to Maxwell’s equations, such as FDTD, have...
Full Text:: data storage constraints. Nanomaterials 2014, 4 104 Chen et al. [7,8] produced two studies

Effects of Fluid Flow on the Growth and Assembly of ZnO Nanocrystals in a Continuous Flow Microreactor

Creator:: Choi, Chang-Ho, Su, Yu-Wei, and Chang, Chih-hung
Abstract:: Assembly of nanocrystals is considered one of the most promising approaches to design nano-, microstructures, and complex mesoscopic architectures. A variety of strategies to induce nanocrystal assembly have been reported, including directed assembly methods that apply external forces to fabricate assembled structures. In this study ZnO nanocrystals were synthesized in...
Resource Type:: Article
Full Text:: . Z. Zhang and J. F. Banfield, Nano Letters, 2003, 3, 373- 378. 13. J. S. Chen, T. Zhu, C. M. Li

KimKi-JoongChemBioEnvEngPlasmonics-Enhanced.pdf

Creator:: Kim, Ki-Joong, Chong, Xinyuan, Kreider, Peter B., Ma, Guoheng, Ohodnicki, Paul R., Baltrus, John P., Wang, Alan X., and Chang, Chih-Hung
Abstract:: Combined plasmonic nanocrystals and metal–organic framework thin-films are fabricated for sensing gases in the near-infrared range. This nanocomposite thin-film shows a highly sensitive response in near-infrared absorption, which is attributed to preconcentration of gas molecules in metal–organic framework pores causing close proximity to the electromagnetic fields at the plasmonic nanocrystal...
Full Text:: , Chem. Rev., 2012, 112, 1055. 4 (a) Z.-Z. Lu, R. Zhang, Y.-Z. Li, Z.-J. Guo and H.-G. Zheng, J. Am

Synthesis of colloidal PbSe nanoparticles using a microwave-assisted segmented flow reactor

Creator:: Hostetler, Eric B., Kim, Ki-Joong, Oleksak, Richard P., Fitzmorris, Robert C., Peterson, Daniel A., Padmavathi, Chandran, Chang, Chih-Hung, Paul, Brian K., Schut, David M., and Herman, Gregory S.
Abstract:: Colloidal lead selenide nanoparticles (PbSe NPs) were synthesized using a microwave-assisted continuous flow reactor. Rapid heating of precursors was performed in the microwave reaction zone to initiate nucleation and was followed by an oil bath growth zone. In this study we have evaluated the effect of the nucleation temperature on...
Resource Type:: Article
Full Text:: -501. [8] Zhu J-J, Wang H, Xu S, Chen H-Y. Sonochemical method for the preparation of monodisperse

ScholarsArchive@OSU

Continuous precipitation of ceria nanoparticles from a continuous flow micromixer

Near-infrared absorption gas sensing with metal-organic framework on optical fibers

Visible-light-sensitive nanoscale Au-ZnO photocatalysts

Nanostructured ZnO as Biomimetic Anti-reflective Coatings on Textured Silicon Using a Continuous Solution Process

XingZhenyuChemistryReducingCO2DenseNanoporous.pdf

Two-step continuous-flow synthesis of CuInSe₂ nanoparticles in a solar microreactor

HanKatherineChemBiolEnvironEngineeringNumericalModelingSub-Wavelength.pdf

Effects of Fluid Flow on the Growth and Assembly of ZnO Nanocrystals in a Continuous Flow Microreactor

KimKi-JoongChemBioEnvEngPlasmonics-Enhanced.pdf

Synthesis of colloidal PbSe nanoparticles using a microwave-assisted segmented flow reactor

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