Pei-Sung Hung

National Yang Ming Chiao Tung University

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Pu‐Wei Wu

National Yang Ming Chiao Tung University

Wei-An Chung

National Yang Ming Chiao Tung University

Chen-Hong Liao

National Yang Ming Chiao Tung University

Guang-Ren Wang

National Yang Ming Chiao Tung University

Wei-Qing Guo

National Yang Ming Chiao Tung University

Yu-Szu Chou

National Yang Ming Chiao Tung University

Shih-Cheng Chou

National Yang Ming Chiao Tung University

Chuan-Jyun Wang

National Yang Ming Chiao Tung University

Shou-Yi Chang

National Tsing Hua University

Chieh-Jui Wu

National Yang Ming Chiao Tung University

Cooperative Institutions

National Yang Ming Chiao Tung University

National Synchrotron Radiation Research Center

National Hsinchu University of Education

National Tsing Hua University

National Taiwan University

National Cheng Kung University

Industrial Technology Research Institute

University of California, Los Angeles

National Taipei University of Technology

National Taiwan Normal University

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Templated fabrication of three-dimensional ordered macroporous Cu2O/Ni structure for glucose sensing

Journal of the Taiwan Institute of Chemical Engineers (2021)

Wei-An Chung Chieh-Jui Wu Pei-Sung Hung Shih-Cheng Chou Wei-Qing Guo

Linear range

10.1016/j.jtice.2021.01.027

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Citations (10)

Formation of Free-Standing Inverse Opals with Gradient Pores

Nanomaterials (2020)

Pei-Sung Hung Chen-Hong Liao Bo-Han Huang Wei-An Chung Shou-Yi Chang

We demonstrate the fabrication of free-standing inverse opals with gradient pores via a combination of electrophoresis and electroplating techniques. Our processing scheme starts with the preparation of multilayer colloidal crystals by conducting sequential electrophoresis with polystyrene (PS) microspheres in different sizes (300, 600, and 1000 nm). The critical factors affecting the stacking of individual colloidal crystals are discussed and relevant electrophoresis parameters are identified so the larger PS microspheres are assembled successively atop of smaller ones in an orderly manner. In total, we construct multilayer colloidal crystals with vertical stacking of microspheres in 300/600, 300/1000, and 300/600/1000 nm sequences. The inverse opals with gradient pores are produced by galvanostatic plating of Ni, followed by the selective removal of colloidal template. Images from scanning electron microscopy exhibit ideal multilayer close-packed structures with well-defined boundaries among different layers. Results from porometer analysis reveal the size of bottlenecks consistent with those of interconnected pore channels from inverse opals of smallest PS microspheres. Mechanical properties determined by nanoindentation tests indicate significant improvements for multilayer inverse opals as compared to those of conventional single-layer inverse opals.

Colloidal crystal

Polystyrene

10.3390/nano10101923

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Citations (45)

Mechanical properties of three-dimensional ordered macroporous Ni foam

Materials Letters (2017)

Chen-Hong Liao Pei-Sung Hung Yu Cheng Shou-Yi Chang Pu‐Wei Wu

Indentation

10.1016/j.matlet.2017.12.087

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Citations (9)

Fabrication of TiO2-coated nanostructured Ni foams for improved mechanical properties

Ceramics International (2019)

Pei-Sung Hung Yu-Szu Chou Guang-Ren Wang Wei-An Chung Pu‐Wei Wu

10.1016/j.ceramint.2019.10.126

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Green Synthesis of Ni@PEDOT and Ni@PEDOT/Au (Core@Shell) Inverse Opals for Simultaneous Detection of Ascorbic Acid, Dopamine, and Uric Acid

Nanomaterials (2020)

Pei-Sung Hung Guang-Ren Wang Wei-An Chung Tze-Ting Chiang Pu‐Wei Wu

We demonstrate a water-based synthetic route to fabricate composite inverse opals for simultaneous detection of ascorbic acid (AA), dopamine (DA), and uric acid (UA). Our process involves the conformal deposition of poly(3,4-ethylenedioxythiophene) (PEDOT) and PEDOT/Au on the skeletons of Ni inverse opals via cyclic voltammetric scans (CV) to initiate the electropolymerization of 3,4-ethylenedioxythiophene (EDOT) monomers. The resulting samples, Ni@PEDOT, and Ni@PEDOT/Au inverse opals, exhibit a three-dimensional ordered macroporous platform with a large surface area and interconnected pore channels, desirable attributes for facile mass transfer and strong reaction for analytes. Structural characterization and material/chemical analysis including scanning electron microscope, X-ray photoelectron spectroscopy, and Raman spectroscopy are carried out. The sensing performances of Ni@PEDOT and Ni@PEDOT/Au inverse opals are explored by conducting CV scans with various concentrations of AA, DA, and UA. By leveraging the structural advantages of inverse opals and the selection of PEDOT/Au composite, the Ni@PEDOT/Au inverse opals reveal improved sensing performances over those of conventional PEDOT-based nanostructured sensors.

Poly(N-isopropylacrylamide)

10.3390/nano10091722

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Citations (20)

Composite NiCoO₂/NiCo₂O₄ inverse opals for the oxygen evolution reaction in an alkaline electrolyte

Catalysis Science & Technology (2020)

Pei-Sung Hung Wei-An Chung Shih-Cheng Chou Kuang-Chih Tso Chung‐Kai Chang

The inverse opals exhibit a 3D ordered macroporous framework, which provides an excessive surface area and facile mass transport. A conformal NiCoO_x functional coating further renders these materials with increased reactivity in OER catalysis.

Reactivity

Oxygen evolution

10.1039/d0cy01218a

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Fabrication of composite Cu2O/Au inverse opals for enhanced detection of hydrogen peroxide: Synergy effect from structure and sensing mechanism

Journal of Alloys and Compounds (2021)

Wei-An Chung Pei-Sung Hung Chieh-Jui Wu Wei-Qing Guo Pu‐Wei Wu

10.1016/j.jallcom.2021.161243

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Citations (10)

Combination of microspheres and sol-gel electrophoresis for the formation of large-area ordered macroporous SiO 2