Junhong Chen

Summary

Affiliation: University of Wisconsin-Milwaukee
Country: USA

Publications

  1. pmc Direct growth of vertically-oriented graphene for field-effect transistor biosensor
    Shun Mao
    Department of Mechanical Engineering, University of Wisconsin Milwaukee, 3200 North Cramer Street, Milwaukee, WI 53211, USA
    Sci Rep 3:1696. 2013
  2. doi request reprint Rational design of carbon network cross-linked Si-SiC hollow nanosphere as anode of lithium-ion batteries
    Zhenhai Wen
    Department of Mechanical Engineering, University of Wisconsin Milwaukee, Milwaukee, Wisconsin 53211, USA
    Nanoscale 6:342-51. 2014
  3. pmc Growth of carbon nanowalls at atmospheric pressure for one-step gas sensor fabrication
    Kehan Yu
    Department of Mechanical Engineering, University of Wisconsin Milwaukee, Milwaukee, WI 53211, USA
    Nanoscale Res Lett 6:202. 2011
  4. doi request reprint A general approach to one-pot fabrication of crumpled graphene-based nanohybrids for energy applications
    Shun Mao
    Department of Mechanical Engineering, University of Wisconsin Milwaukee, 3200 North Cramer Street, Milwaukee, Wisconsin 53211, USA
    ACS Nano 6:7505-13. 2012
  5. ncbi request reprint Fast and selective room-temperature ammonia sensors using silver nanocrystal-functionalized carbon nanotubes
    Shumao Cui
    Department of Mechanical Engineering, University of Wisconsin Milwaukee, Milwaukee, Wisconsin 53211, USA
    ACS Appl Mater Interfaces 4:4898-904. 2012
  6. doi request reprint Ag nanocrystal as a promoter for carbon nanotube-based room-temperature gas sensors
    Shumao Cui
    Department of Mechanical Engineering, University of Wisconsin Milwaukee, 3200 N Cramer Street, Milwaukee, WI 53211, USA
    Nanoscale 4:5887-94. 2012
  7. doi request reprint Ultrasonic-assisted self-assembly of monolayer graphene oxide for rapid detection of Escherichia coli bacteria
    Jingbo Chang
    Department of Mechanical Engineering, University of Wisconsin Milwaukee, 3200 North Cramer Street, Milwaukee, WI 53211, USA
    Nanoscale 5:3620-6. 2013
  8. doi request reprint Nitrogen-enriched core-shell structured Fe/Fe(3)C-C nanorods as advanced electrocatalysts for oxygen reduction reaction
    Zhenhai Wen
    Department of Mechanical Engineering, University of Wisconsin Milwaukee, 53211, USA
    Adv Mater 24:1399-404. 2012
  9. doi request reprint Highly sensitive room temperature carbon monoxide detection using SnO2 nanoparticle-decorated semiconducting single-walled carbon nanotubes
    Yang Zhang
    Department of Mechanical Engineering, University of Wisconsin, Milwaukee, 3200 North Cramer Street, Milwaukee, WI 53211, USA
    Nanotechnology 24:025503. 2013
  10. doi request reprint Controllable synthesis of silver nanoparticle-decorated reduced graphene oxide hybrids for ammonia detection
    Shumao Cui
    Department of Mechanical Engineering, University of Wisconsin Milwaukee, 3200 N Cramer Street, Milwaukee, WI 53211, USA
    Analyst 138:2877-82. 2013

Collaborators

Detail Information

Publications43

  1. pmc Direct growth of vertically-oriented graphene for field-effect transistor biosensor
    Shun Mao
    Department of Mechanical Engineering, University of Wisconsin Milwaukee, 3200 North Cramer Street, Milwaukee, WI 53211, USA
    Sci Rep 3:1696. 2013
    ..The PECVD growth of VG presents a one-step and reliable approach to prepare graphene-based electronic biosensors...
  2. doi request reprint Rational design of carbon network cross-linked Si-SiC hollow nanosphere as anode of lithium-ion batteries
    Zhenhai Wen
    Department of Mechanical Engineering, University of Wisconsin Milwaukee, Milwaukee, Wisconsin 53211, USA
    Nanoscale 6:342-51. 2014
    ....
  3. pmc Growth of carbon nanowalls at atmospheric pressure for one-step gas sensor fabrication
    Kehan Yu
    Department of Mechanical Engineering, University of Wisconsin Milwaukee, Milwaukee, WI 53211, USA
    Nanoscale Res Lett 6:202. 2011
    ..PACS: Graphene (81.05.ue), Chemical vapor deposition (81.15.Gh), Gas sensors (07.07.Df), Atmospheric pressure (92.60.hv)...
  4. doi request reprint A general approach to one-pot fabrication of crumpled graphene-based nanohybrids for energy applications
    Shun Mao
    Department of Mechanical Engineering, University of Wisconsin Milwaukee, 3200 North Cramer Street, Milwaukee, Wisconsin 53211, USA
    ACS Nano 6:7505-13. 2012
    ..This study provides a new and facile route to fabricating high-performance hybrid CG-nanocrystal electrodes for various energy systems...
  5. ncbi request reprint Fast and selective room-temperature ammonia sensors using silver nanocrystal-functionalized carbon nanotubes
    Shumao Cui
    Department of Mechanical Engineering, University of Wisconsin Milwaukee, Milwaukee, Wisconsin 53211, USA
    ACS Appl Mater Interfaces 4:4898-904. 2012
    ..Ammonia molecules are adsorbed at Ag hollow sites on the AgO surface with H pointing toward Ag. A net charge transfer from NH(3) to the Ag NC-MWCNTs hybrid leads to the conductance change in the hybrid...
  6. doi request reprint Ag nanocrystal as a promoter for carbon nanotube-based room-temperature gas sensors
    Shumao Cui
    Department of Mechanical Engineering, University of Wisconsin Milwaukee, 3200 N Cramer Street, Milwaukee, WI 53211, USA
    Nanoscale 4:5887-94. 2012
    ..The significant response to NH(3) is predicted to arise because NH(3) is attracted to hollow sites on the oxidized Ag surface with the H atoms pointing towards Ag atoms and electron donation from H to the hybrid sensor...
  7. doi request reprint Ultrasonic-assisted self-assembly of monolayer graphene oxide for rapid detection of Escherichia coli bacteria
    Jingbo Chang
    Department of Mechanical Engineering, University of Wisconsin Milwaukee, 3200 North Cramer Street, Milwaukee, WI 53211, USA
    Nanoscale 5:3620-6. 2013
    ..coli cells with a concentration as low as 10 colony-forming units (cfu) per mL. The biosensing platform reported here is promising for large-scale, sensitive, selective, low-cost, and real-time detection of E. coli bacteria...
  8. doi request reprint Nitrogen-enriched core-shell structured Fe/Fe(3)C-C nanorods as advanced electrocatalysts for oxygen reduction reaction
    Zhenhai Wen
    Department of Mechanical Engineering, University of Wisconsin Milwaukee, 53211, USA
    Adv Mater 24:1399-404. 2012
    ..e., three times higher at R(ex) of 1 Ω) than the Pt/C in microbial fuel cells. Furthermore, the N-Fe/Fe(3)C@C features an ultralow cost and excellent long-term stability suitable for mass production...
  9. doi request reprint Highly sensitive room temperature carbon monoxide detection using SnO2 nanoparticle-decorated semiconducting single-walled carbon nanotubes
    Yang Zhang
    Department of Mechanical Engineering, University of Wisconsin, Milwaukee, 3200 North Cramer Street, Milwaukee, WI 53211, USA
    Nanotechnology 24:025503. 2013
    ..The new model not only resulted in a nice fit to our data, but also allowed us to estimate the contact resistance between an individual SWNT and the gold electrodes...
  10. doi request reprint Controllable synthesis of silver nanoparticle-decorated reduced graphene oxide hybrids for ammonia detection
    Shumao Cui
    Department of Mechanical Engineering, University of Wisconsin Milwaukee, 3200 N Cramer Street, Milwaukee, WI 53211, USA
    Analyst 138:2877-82. 2013
    ..We found that the loading density of NPs greatly affects the sensing performance of RGO/Ag hybrids and a proper NP loading leads to maximum sensitivity...
  11. doi request reprint Ultrafast hydrogen sensing through hybrids of semiconducting single-walled carbon nanotubes and tin oxide nanocrystals
    Shun Mao
    Department of Mechanical Engineering, University of Wisconsin Milwaukee, 3200 N Cramer Street, Milwaukee, WI 53211, USA
    Nanoscale 4:1275-9. 2012
    ..The hybrid SnO(2) NC-SWCNT platform shows a response time of 2-3 seconds to 1% H(2) under room temperature and can fully recover within a few minutes in air...
  12. ncbi request reprint Single-walled carbon nanotube field-effect transistors with graphene oxide passivation for fast, sensitive, and selective protein detection
    Jingbo Chang
    Department of Mechanical Engineering, University of Wisconsin Milwaukee, 3200 North Cramer Street, Milwaukee, WI 53211, USA
    Biosens Bioelectron 42:186-92. 2013
    ..The passivation with GO layers can effectively lead to enhanced sensitivity of biosensor devices through increasing the on/off ratio of FET sensors...
  13. ncbi request reprint Nitrogen-enriched core-shell structured fe/fe(3) C-C nanorods as advanced electrocatalysts for oxygen reduction reaction (adv. Mater. 11/2012)
    Zhenhai Wen
    Department of Mechanical Engineering, University of Wisconsin Milwaukee, 3200 North Cramer Street, Milwaukee, 53211, USA Max Planck Institut für Polymerforschung, Ackermannweg 10, 55128 Mainz, Germany
    Adv Mater 24:1398. 2012
    ..Notably, the N-Fe/Fe(3) C@C features an ultra-low cost and excellent long-term stability, as discussed by X. L. Feng, Z. He, J. H. Chen and co-workers on page 1399...
  14. doi request reprint A new reducing agent to prepare single-layer, high-quality reduced graphene oxide for device applications
    Shun Mao
    Department of Mechanical Engineering, University of Wisconsin Milwaukee, 3200 N Cramer Street, Milwaukee, WI 53211, USA
    Nanoscale 3:2849-53. 2011
    ..Field-effect transistor gas sensors were fabricated using as-produced RGO sheets and the resulting sensor exhibited a fast response and a high sensitivity to low-concentration target gases at room temperature...
  15. doi request reprint Multilayered Si nanoparticle/reduced graphene oxide hybrid as a high-performance lithium-ion battery anode
    Jingbo Chang
    Department of Mechanical Engineering, University of Wisconsin Milwaukee, 3200 North Cramer Street, Milwaukee, Wisconsin, 53211, USA
    Adv Mater 26:758-64. 2014
    ..05 C (120 mA g(-1) ) and 87% capacity retention (up to 630 mAh g(-1) ) at 10 C after 152 cycles. ..
  16. doi request reprint Lithium-ion batteries: multilayered si nanoparticle/reduced graphene oxide hybrid as a high-performance lithium-ion battery anode (adv. Mater. 5/2014)
    Jingbo Chang
    Department of Mechanical Engineering, University of Wisconsin Milwaukee, 3200 North Cramer Street, Milwaukee, Wisconsin, 53211, USA
    Adv Mater 26:665. 2014
    ..J. Chen and co-workers report on page 758 a multilayered Si/reduced graphene oxide anode that offers superior reversible specific capacity, rate capability, and cycling performance. ..
  17. doi request reprint Semiconducting graphene: converting graphene from semimetal to semiconductor
    Ganhua Lu
    Department of Mechanical Engineering, University of Wisconsin Milwaukee, Milwaukee, Wisconsin 53211, USA
    Nanoscale 5:1353-68. 2013
    ..Despite the relatively short history of research in semiconducting graphene, the progress has been remarkable and many significant developments are highly anticipated...
  18. doi request reprint Crumpled nitrogen-doped graphene nanosheets with ultrahigh pore volume for high-performance supercapacitor
    Zhenhai Wen
    Department of Mechanical Engineering, University of Wisconsin Milwaukee, 3200 North Cramer Street, Milwaukee, Wisconsin 53211, USA Max Planck Institut für Polymerforschung, Ackermannweg 10, 55128 Mainz, Germany
    Adv Mater 24:5610-6. 2012
    ..The unique electrochemical properties of C-NGNSs make them a promising electrode for supercapacitors with high capacity, excellent rate capability, and long-term stability...
  19. doi request reprint Metal nitride/graphene nanohybrids: general synthesis and multifunctional titanium nitride/graphene electrocatalyst
    Zhenhai Wen
    Department of Mechanical Engineering, University of Wisconsin Milwaukee, 53211, USA
    Adv Mater 23:5445-50. 2011
    ..e., as a low-cost counter electrode for I(3)(-) reduction in dye-sensitized solar cells and for nicotinamide adenine dinucleotide (NADH) oxidation in dehydrogenase enzyme-based biosensors...
  20. ncbi request reprint Constructing 2D porous graphitic C3 N4 nanosheets/nitrogen-doped graphene/layered MoS2 ternary nanojunction with enhanced photoelectrochemical activity
    Yang Hou
    Department of Mechanical Engineering, University of Wisconsin Milwaukee, 3200 North Cramer Street, Milwaukee, Wisconsin, 53211, USA
    Adv Mater 25:6291-7. 2013
    ..The 2D ternary nanojunction exhibits significantly enhanced photoelectrochemical and photocatalytic activities due to the large contact area, efficient light absorption, and rapid charge separation and transport. ..
  21. ncbi request reprint Controllable synthesis of hollow si anode for long-cycle-life lithium-ion batteries
    Xingkang Huang
    Department of Mechanical Engineering, University of Wisconsin Milwaukee, 3200 N Cramer Street, Milwaukee, WI, 53211, USA
    Adv Mater 26:4326-32. 2014
    ..Such hollow Si materials as anodes of lithium-ion batteries show excellent cyclic performance, which is promising for practical applications. ..
  22. doi request reprint Toward practical gas sensing with highly reduced graphene oxide: a new signal processing method to circumvent run-to-run and device-to-device variations
    Ganhua Lu
    Department of Mechanical Engineering, University of Wisconsin Milwaukee, 3200 North Cramer Street, Milwaukee, Wisconsin 53211, USA
    ACS Nano 5:1154-64. 2011
    ..We suggest that the work reported here (including the sensor signal processing method and the inherent simplicity of device fabrication) is a significant step toward the real-world application of graphene-based chemical sensors...
  23. ncbi request reprint Hg(II) ion detection using thermally reduced graphene oxide decorated with functionalized gold nanoparticles
    Kehung Chen
    Department of Mechanical Engineering, University of Wisconsin Milwaukee, 3200 North Cramer Street, Milwaukee, Wisconsin 53211, USA
    Anal Chem 84:4057-62. 2012
    ..Our work suggests that rGO/TGA-AuNP hybrid structures are promising for low-cost, portable, real-time, heavy metal ion detectors...
  24. doi request reprint Evidence of nanocrystalline semiconducting graphene monoxide during thermal reduction of graphene oxide in vacuum
    Eric C Mattson
    Department of Physics and Laboratory for Surface Studies, University of Wisconsin Milwaukee, Milwaukee, Wisconsin 53211, United States
    ACS Nano 5:9710-7. 2011
    ..GMO has a quasi-hexagonal unit cell, an unusually high 1:1 O:C ratio, and a calculated direct band gap of ∼0.9 eV...
  25. ncbi request reprint Selective deposition of CdSe nanoparticles on reduced graphene oxide to understand photoinduced charge transfer in hybrid nanostructures
    Kehan Yu
    Department of Mechanical Engineering, University of Wisconsin Milwaukee, 3200 North Cramer Street, Milwaukee, Wisconsin 53211, United States
    ACS Appl Mater Interfaces 3:2703-9. 2011
    ..The selective deposition of CdSe NPs on R-GO and the understanding of the subsequent photoinduced charge transfer can potentially lead to high-performance optoelectronic devices...
  26. doi request reprint Nickel oxide hollow microsphere for non-enzyme glucose detection
    Suqin Ci
    Department of Mechanical Engineering, University of Wisconsin Milwaukee, Milwaukee, WI 53211, United States
    Biosens Bioelectron 54:251-7. 2014
    ..67 μM-6.87 mM, short response time (3 s), a lower detection limit of 0.53 μM (S/N=3), high sensitivity (~2.39 mA mM(-1) cm(-2)) as well as good stability and repeatability...
  27. doi request reprint Improved cyclic performance of Si anodes for lithium-ion batteries by forming intermetallic interphases between Si nanoparticles and metal microparticles
    Xingkang Huang
    Department of Mechanical Engineering, University of Wisconsin Milwaukee, 3200 North Cramer Street, Milwaukee, Wisconsin 53211, United States
    ACS Appl Mater Interfaces 5:11965-70. 2013
    ..7% of its capacity. Therefore, the concept of employing intermetallic interphases between Si nanoparticles and metal particles provides a new avenue to improve the cyclic performance of Si-based anodes. ..
  28. ncbi request reprint Controllable photoelectron transfer in CdSe nanocrystal-carbon nanotube hybrid structures
    Kehan Yu
    Department of Mechanical Engineering, University of Wisconsin Milwaukee, 3200 North Cramer Street, Milwaukee, Wisconsin 53211, USA
    Nanoscale 4:742-6. 2012
    ..The direction of the electron transfer could be controlled with the NC coverage on CNTs and the gate voltage...
  29. ncbi request reprint Note: Continuous synthesis of uniform vertical graphene on cylindrical surfaces
    Zheng Bo
    Department of Mechanical Engineering, University of Wisconsin Milwaukee, Milwaukee, Wisconsin 53211, USA
    Rev Sci Instrum 82:086116. 2011
    ..Potential applications of the resulting uniform-VG-coated metallic wire could include field emitters, field-ionization-based neutral atom detectors, and indoor corona discharges...
  30. ncbi request reprint Free standing TiO2 nanotube array electrodes with an ultra-thin Al2O3 barrier layer and TiCl4 surface modification for highly efficient dye sensitized solar cells
    Xianfeng Gao
    Department of Mechanical Engineering, University of Wisconsin Milwaukee, 3200 North Cramer Street, Milwaukee, WI 53211, USA
    Nanoscale 5:10438-46. 2013
    ..A high conversion efficiency of 8.62% is obtained, which is about 1.8 times that of the device without surface modifications. ..
  31. ncbi request reprint Synthesizing nitrogen-doped activated carbon and probing its active sites for oxygen reduction reaction in microbial fuel cells
    Bo Zhang
    Department of Civil Engineering and Mechanics and Department of Mechanical Engineering, University of Wisconsin Milwaukee, Milwaukee, Wisconsin 53211, United States
    ACS Appl Mater Interfaces 6:7464-70. 2014
    ....
  32. ncbi request reprint Enhanced photovoltaic performance of perovskite CH₃NH₃PbI₃ solar cells with freestanding TiO₂ nanotube array films
    Xianfeng Gao
    Department of Mechanical Engineering, University of Wisconsin Milwaukee, Wisconsin 53211, USA
    Chem Commun (Camb) 50:6368-71. 2014
    ..This study suggests a promising way of improving the conversion efficiency of perovskite solar cells through novel electrodes. ..
  33. ncbi request reprint Hierarchical Nanohybrids with Porous CNT-Networks Decorated Crumpled Graphene Balls for Supercapacitors
    By Shun Mao
    Department of Mechanical Engineering, University of Wisconsin Milwaukee, 3200 North Cramer Street, Milwaukee, Wisconsin 53211, United States
    ACS Appl Mater Interfaces 6:9881-9. 2014
    ..The performance established on the p-CNTn/CGBs far exceeded the bare CGB and reduced graphene oxide (RGO) counterparts in terms of specific capacitance and rate capabilities. ..
  34. doi request reprint Fabrication and characterization of microwave immunosensors based on organic semiconductors with nanogold-labeled antibody
    Feng Li
    Department of Electrical Engineering and Computer Science, University of Wisconsin Milwaukee, WI 53201 0784, USA
    Conf Proc IEEE Eng Med Biol Soc 2008:2381-4. 2008
    ..Equivalent circuit models are derived from microwave measurements over the frequency range 0.3 MHz to 8.5 GHz...
  35. doi request reprint Nanoscale discharge electrode for minimizing ozone emission from indoor corona devices
    Zheng Bo
    Department of Mechanical Engineering, University of Wisconsin Milwaukee, Milwaukee, Wisconsin 53211, USA
    Environ Sci Technol 44:6337-42. 2010
    ..Contrary to the conventional wisdom, negative CNT discharges should be used to enhance the current density owing to the efficient field emission of electrons from the CNT surface...
  36. ncbi request reprint Modulating Gas Sensing Properties of CuO Nanowires through Creation of Discrete Nanosized p-n Junctions on Their Surfaces
    Mark Mashock
    Department of Mechanical Engineering, University of Wisconsin Milwaukee, Milwaukee, Wisconsin 53211, United States
    ACS Appl Mater Interfaces 4:4192-9. 2012
    ..g., by adjusting the coverage of SnO(2) NCs on CuO NWs and doping of SnO(2) NCs)...
  37. ncbi request reprint Facile one-pot, one-step synthesis of a carbon nanoarchitecture for an advanced multifunctonal electrocatalyst
    Zhenhai Wen
    Department of Mechanical Engineering, University of Wisconsin Milwaukee, 3200 North Cramer Street, Milwaukee, WI 53211 USA
    Angew Chem Int Ed Engl 53:6496-500. 2014
    ..The high-yield synthetic process features high efficiency, low-cost, straightforward operation, and simple equipment. ..
  38. doi request reprint Sulfur-infiltrated porous carbon microspheres with controllable multi-modal pore size distribution for high energy lithium-sulfur batteries
    Cunyu Zhao
    Mechanical Engineering Department, University of Wisconsin Milwaukee, Milwaukee, Wisconsin 53211, USA
    Nanoscale 6:882-8. 2014
    ..An initial discharge capacity at 1278 mA h g(-1) and capacity retention at 70.7% (904 mA h g(-1)) after 100 cycles at a high rate (1 C) were achieved. The material fabrication process is relatively simple and easily scalable. ..
  39. ncbi request reprint Ultrafast room temperature NH3 sensing with positively gated reduced graphene oxide field-effect transistors
    Ganhua Lu
    Department of Mechanical Engineering, University of Wisconsin Milwaukee, Milwaukee, Wisconsin 53211, USA
    Chem Commun (Camb) 47:7761-3. 2011
    ..Our findings have important implications for fast, repeatable, room temperature gas detection using graphene/R-GO...
  40. ncbi request reprint Graphene-based sensors for detection of heavy metals in water: a review
    Jingbo Chang
    Department of Mechanical Engineering, University of Wisconsin Milwaukee, 3200 North Cramer Street, Milwaukee, WI, 53211, USA
    Anal Bioanal Chem 406:3957-75. 2014
    ..Finally, challenges facing G/GO-based water sensor development and outlook for future research are discussed. ..
  41. ncbi request reprint Ordered assembly of sorted single-walled carbon nanotubes by drying an aqueous droplet on a meshed substrate
    Ganhua Lu
    Department of Mechanical Engineering, University of Wisconsin Milwaukee, Milwaukee, WI 53211, USA
    J Nanosci Nanotechnol 12:6968-76. 2012
    ..The evaporation-driven assembly of sorted SWCNTs has the potential to produce ordered SWCNT structures that are attractive for the fabrication of electronic devices comprising mostly semiconducting or metallic tubes...
  42. ncbi request reprint Coating carbon nanotubes with colloidal nanocrystals by combining an electrospray technique with directed assembly using an electrostatic field
    Shun Mao
    Department of Mechanical Engineering, University of Wisconsin Milwaukee, Milwaukee, WI 53211, USA
    Nanotechnology 19:455610. 2008
    ..The technique can be used to assemble various compositions of nanomaterials onto different substrates and provides a versatile route for producing novel hybrid nanostructures...
  43. ncbi request reprint Synthesis, assembly, and characterization of Si nanocrystals and Si nanocrystal-carbon nanotube hybrid structures
    Ming Liu
    Department of Mechanical Engineering, University of Wisconsin Milwaukee, Milwaukee, WI 53211, USA
    Nanotechnology 19:265705. 2008
    ..Quantum size effects have been observed for as-produced silicon nanocrystals. The resulting silicon nanocrystals and hybrid nanostructures are promising for optoelectronic applications...