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Research
Interests:
1. Controlled synthesis,
characterization and physical properties of one-dimensional (1D)
semiconductor nanostructures (including nano-heterostructures);
2.
Electronic structures and optical properties of nanostructures via X-ray
absorption fine structure (XAFS) and X-ray excited optical luminescence
(XEOL), and focusing on the spectromicroscopy studies of nanostructures by
scanning transmission X-ray microscopy (STXM).
3. Biomineralization - studying the effect of biomolecules
and biosubstrates on the mineralization of hydroxyapatite (HAP) and calcium
carbonate.
Synchrotron Facilities Used For
My Research:
1. Variable Line Spacing Plane Grating Monochromator
(VLS-PGM), Canadian
Light Source, The University of Saskatchewan, Canada.
2. High Resolution Spherical Grating Monochromator (SGM),
Canadian Light Source, The
University of Saskatchewan, Canada.
3. Soft X-ray Microcharacterization Beamline (SXRMB),
Canadian Light Source, The
University of Saskatchewan, Canada.
4. Soft X-ray Spectromicroscopy (SM), Canadian Light Source, The
University of Saskatchewan, Canada.
5. Pacific North Consortium X-ray Science Division (PNC/XSD),
Advanced Photon Source, Argonne, IL USA.
6. Beamline 8.0.1 Soft X-ray
fluorescence (SXF), Advanced Light Source, Berkeley, USA.
Skills:
Synthesis of nanomaterials:
vapor-phase and liquid-phase methods such as thermal evaporation, chemical
vapor deposition, sol-gel, anodic alumina oxide (AAO) template, molten
salt, and hydrothermal methods.
Operation of equipments: Scanning Electron
Microscopy (SEM), Transmission Electron Microscopy (TEM), X-ray Diffraction
(XRD), Dynamic Light Scattering (DLS), Field Emission (FE)
system, and Fourier Transform Infrared
spectroscopy (FT-IR).
Publications:
1. Jian Wang,‡ Zhiqiang Wang,‡ Hyunjin Cho, Myung Jong
Kim, Tsun-Kong Sham, Xuhui Sun, “Layer
Speciation and electronic structure investigation of freestanding hexagonal
boron nitride nanosheets”, Nanoscale 7, 1718 (2015). doi:10.1039/C4NR04445B
2.
Mehrnaz Salarian,
William Z. Xu, Zhiqiang Wang, Tsun-Kong Sham, Paul A.
Charpentier. “Hydroxapatite-TiO2-based Nanocomposites
Synthesized in Supercritical CO2 for Bone Tissue Engineering:
Physical and Mechanical Properties”, ACS
Applied Materials & Interfaces 6, 16918 (2014). doi:10.1021/am5044888
3. Zhiqiang Wang, Jian Wang, Tsun-Kong Sham, Shaoguang Yang, “Origin of the luminescence
from ZnO/CdS core/shell nanowire arrays” Nanoscale 6, 9783(2014). doi:10.1039/C4NR02231A
4. Zhiqiang Wang, Xiaoxuan Guo and Tsun-Kong Sham, “2D XANES-XEOL mapping:
observation of enhanced band gap emission from ZnO nanowire arrays” Nanoscale 6, 6531(2014). doi:10.1039/C4NR01049C
5. Mohammad Norouzi
Banis, Shuhui Sun, Xiangbo Meng, Yong Zhang, Zhiqiang Wang, Ruying Li, Mei Cai, Tsun-Kong Sham, Xueliang
Sun, “TiSi2Ox coated N-doped carbon nanotubes as Pt
catalyst support for the oxygen reduction reaction in PEMFCs” Journal of Physical Chemistry C. 117, 15457(2013).
doi:10.1021/jp3118874
6. Zhiqiang Wang, Chunlei Li, Lijia Liu, Tsun-Kong Sham, “Electronic structures and
optical properties of α-Al2O3 nanowires” Journal
of Physics: Conference Series 430, 012065(2013). doi:10.1088/1742-6596/430/1/012065/
7. Zhiqiang Wang, Chunlei Li, Lijia Liu, Tsun-Kong Sham, “Probing defect emissions
in bulk, micro- and nano-sized α-Al2O3 via X-ray
excited optical luminescence” Journal of Chemical Physics 138,
084706(2013). http://dx.doi.org/10.1063/1.4793473
8. Zhiqiang Wang, Ruiping Ge, Jiangfeng Gong, Shulin Gu, Shaoguang Yang, “Synthesis,
Characterization and Optical Properties of ZnS Nanobelt/ZnO Nanoparticle
Heterostructures” Materials
Letters 82, 29(2012). doi:
10.1016/j.matlet.2012.05.054
9. Jiangfeng Gong,
Zhaoming Dou, Zhiqiang Wang, Bo
Zhang, Weihua Zhu, Kaixiao Zhang, Mingyi Liu, Hao Zhu, Jianfeng Zhou. “ZnO
nanorod arrays with tunable size and field emission properties on an ITO
substrate achieved by an electrodeposition method” Chinese
Physics B 21, 68101(2012). doi:
10.1088/1674-1056/21/6/068101/
10. Zhiqiang Wang, Jian Wang, Tsun-Kong Sham, Shaoguang Yang, “Tracking the Interface
of an Individual ZnS/ZnO Nano-Heterostructure” Journal of Physical Chemistry C. 116, 10375(2012).
doi:
10.1021/jp301289x
11. Zhiqiang Wang, Zhao Liu, Jiangfeng Gong, Sheng Wang, Shaoguang Yang, “Structure and Optical Properties of Individual Hierarchical ZnS
Nanobelt/ZnO Nanorod Heterostructures” CrystEngComm, 13, 6774(2011). doi:
10.1039/C1CE05660C
12. Changyong Lan, Jiangfeng Gong, Zhiqiang Wang, Shaoguang Yang,
“Synthesis of K6Ta10.8O nanowires by molten salt
technique” Materials Science and Engineering B
176, 679(2011). doi: 10.1016/j.mseb.2011.02.004
13.
Zhiqiang Wang, Jiangfeng Gong, Yun Su, Yuwen Jiang, Shaoguang Yang, “Sixfold-Symmetrical Hierarchical ZnO Nanostructure
Arrays: Synthesis, Characterization, and Field Emission Property” Crystal Growth and Design 10,
2455(2010) doi:10.1021/cg9015367
14. Zhiqiang Wang, Guobin Ma, Xiangyang Liu, “Will Fluoride Toughen
or Weaken Our Teeth? - Understandings Based on Nucleation, Morphology and
Structural Assembly” Journal of Physical Chemistry B 113,
16393(2009) doi:
10.1021/jp905846p
15. Jiangfeng Gong, Hongbo Huang, Zhiqiang Wang, Xiaoning Zhao, Shaoguang Yang, Zhongzhen Yu, “A
Third Kind Growth Method of Tetrapod: Rod-based Single Crystal ZnO Tetrapod
Nanostructure” Materials Chemistry and Physics 112,
749(2008) doi: 10.1016/j.matchemphys.2008.07.056
16. Zhiqiang Wang, Xuedong Liu, Jiangfeng Gong, Hongbo Huang, Shulin
Gu, Shaoguang Yang. “Epitaxial Growth of ZnO Nanowires on ZnS Nanobelts by
Metal Organic Chemical Vapor Deposition” Crystal
Growth and Design 8, 3911(2008) doi:10.1021/cg800588q
17. Zhiqiang Wang, Jiangfeng Gong, Junhong Duan, Hongbo Huang, Shaoguang Yang,
Xiaoning Zhao, Rong Zhang, Youwei Du. “Direct Synthesis and
Characterization of CdS Nanobelts” Applied Physics Letters 89,
033102(2006). (Selected for the July 31, 2006 issue
of Virtual Journal of Nanoscale
Science & Technology) doi:10.1063/1.2222237
Presentations:
1.
Direct Synthesis and Characterization of CdS Nanobelts: poster
presentation at the 1st Annual Conference of Jiangsu Young Scientists,
Nanjing, China (2006).
2.
Electronic Structure and Optical Properties of α-Al2O3
Nanostructures: oral presentation at the 15th international conference on
X-ray absorption fine structure, Beijing, China (July, 2012).
3.
2D XANES-XEOL Mapping: Observation of Enhanced Band Gap Emission in
ZnO Nanowire Arrays: oral presentation at the Surface Canada 2013 – Energy,
Materials, Environment conference, London, Canada (May, 2013).
4.
Origin of the Luminescence from ZnO/CdS Nanowire Arrays via X-ray
Excited Optical Luminescence: oral presentation at the 38th
International Conference on Vacuum Ultraviolet and X-ray Physics, Hefei,
China (July, 2013).
5.
Nanoscale Chemical Analysis by Scanning Transmission X-ray
Microscopy, oral presentation at the 17th Canadian Light Source
Annual User Meeting, Saskatoon, Canada (May, 2014).
Workshops:
1. Canadian Light Source XANES & RXD Calculations using FDMNES
Code Training Workshop: a workshop focuses on the theoretical simulation of XANES &
RXD spectra using the ab initio theory. Polarization effect, dichroism, and
implications for material properties are also explored. (May, 2011)
Teaching Experience:
Teaching Assistant for College
Physics Experiment in a class of 16 students. (Feb.-Jun. 2006)
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