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Hua Chun ZENG, Ph.D., Professor Department of Chemical and Biomolecular Engineering Faculty of Engineering, National University of Singapore, Singapore
IMRE Adjunct Appointment, A*Star, 2011 Special Academic Partner, KAUST, 2008 Professor, NUS, 2006 NGS Senior Faculty Member, NUS, 2003 Active Member (ANB), PNU, 2002 Associate Professor, NUS, 1999 JSPS Visiting Scientist, Kyoto, 1995 Senior Lecturer, NUS, 1995 Visiting Scientist, Asahi Glass, 1992 Lecturer, NUS, 1991 PDF (Phys. Chem.), Toronto, 1990 PhD (Phys. Chem.), British Columbia, 1989 BSc (Chem.), Xiamen, 1982 Office: E5-02-21 Tel: (65) 6516-2896; Fax: (65) 6779-1936 Email: chezhc@nus.edu.sg
ICMAT2011 Symposium B *Synthesis and Architecture of Nanomaterials* http://www.mrs.org.sg/icmat2011/s2.htm Singapore, June 26 - July 1, 2011 ResearcherID & Recent Publications 165. C.C. Yec and H.C. Zeng, "Synthetic Architecture of Multiple Core-Shell and Yolk-Shell Structures of (Cu₂O@)_nCu₂O (n = 1 to 4) with Centricity and Eccentricity", Chemistry of Materials, Vol. 24 (2012) pp. xxxx-xxxx. 164. H.C. Zeng, "Nanotechnology for Emerging Applications", Current Opinion in Chemical Engineering, Vol. 1 (2012) pp. xx-xx. 163. C.C. Li, J. Dou, L.W. Chen, J.Y. Lin and H.C. Zeng, "Antisolvent Precipitation for Synthesis of Monodisperse Mesoporous Niobium Oxide Spheres as Highly Effective Solid Acid Catalysts", ChemCatChem, Vol. 4 (2012) pp. xxx-xxx. 162. J. Dou and H.C. Zeng, "Preparation of Mo-embedded Mesoporous Carbon Microspheres for Friedel-Crafts Alkylation", Journal of Physical Chemistry C, Vol. 116 (2012) pp. 7767-7775. 161. S.L. Xiong, J.S. Chen, X.W. Lou and H.C. Zeng, "Mesoporous Co₃O₄ and CoO@C Topotactically Transformed from Chrysanthemum-like Co(CO₃)_0.5(OH)0.11H₂O and Their Lithium Storage Properties", Advanced Functional Materials, Vol. 22 (2012) pp. 861-871. 160. B.J. Xi, L.K. Verma, J. Li, C.S. Bhatia, A.J. Danner, H.S. Yang and H.C. Zeng, "TiO₂ Thin Films Prepared via Adsorptive Self-assembly for Self-cleaning Applications", ACS Applied Materials and Interfaces, Vol. 4 (2012) pp. 1093-1102. 159. X.Q. Li, Z.W. Feng, Y.Y. Xia and H.C. Zeng, "Protein-Assisted Synthesis of Double-Shelled CaCO₃ Microcapsules and Their Mineralization with Heavy Metal Ions", Chemistry, A European Journal, Vol. 18 (2012) pp. 1945-1952. 158. S.L. Xiong and H.C. Zeng, "Serial Ionic Exchange for Synthesis of Multishelled Copper Sulfide Hollow Spheres", Angewandte Chemie, International Edition, Vol. 51 (2012) pp. 945-952. 157. K.X. Yao and H.C. Zeng, "Simultaneous Chemical Modification and Structural Transformation of Stober Silica Spheres for Integration of Nanocatalysts", Chemistry of Materials, Vol. 24 (2012) pp. 140-148. 156. Y.X. Zhang and H.C. Zeng, "A direct method for ultrafine gold networks with nanometer scale ligaments", International Journal of Nanotechnology, Vol. 8 (2011) pp. 816-823. 155. D.P. Wang and H.C. Zeng, "Creation of Interior Space, Architecture of Shell Structure and Encapsulation of Functional Materials for Mesoporous SiO₂ Spheres", Chemistry of Materials, Vol. 23 (2011) pp. 4886-4899. 154. K.X. Yao, Xin Liu, H.C. Zeng and Yu Han, "Site-specific Growth of Au Particles on ZnO Nanopyramids under Ultraviolet Illumination", Nanoscale, Vol. 3 (2011) pp. 4195-2100. 153. H.C. Zeng, "Preparation and Integration of Nanostructured Titanium Dioxide", Current Opinion in Chemical Engineering, Vol. 1 (2011) pp. 11-17. (Freely accessed) 152. L.K. Verma, M. Sakhuja, J. Son, A.J. Danner, H. Yang, H.C. Zeng and C.S. Bhatia, "Self-cleaning and Antireflective Packaging Glass for Solar Modules", Renewable Energy, Vol. 36 (2011) pp. 2489-2493. 151. T.T. Chng, L. Polavarapu, Q.H. Xu, W. Ji and H.C. Zeng, "Rapid Synthesis of Highly Monodisperse Au_xAg_1-x Alloy Nanoparticles via a Half-Seeding Approach", Langmuir, Vol. 27 (2011) pp. 5633-5643. 150. H.C. Zeng, "Synthesis and Self-Assembly of Complex Hollow Materials", Journal of Materials Chemistry, Vol. 21 (2011) pp. 7511-7526 (Feature Article). 149. C.C. Li and H.C. Zeng, "Cobalt (hcp) Nanofibers with Pine-Tree-Leaf Hierarchical Superstructures", Journal of Materials Chemistry, Vol. 20 (2010) pp. 9187-9192. 148. M.L. Pang, J.Y. Hu and H.C. Zeng, "Synthesis, Morphological Control and Antibacterial Properties of Hollow/Solid Ag₂S/Ag Heterodimers", Journal of the American Chemical Society, Vol. 132 (2010) pp. 10771-10785. 147. K.X. Yao,X.M. Yin,T.H. Wang and H.C. Zeng, "Synthesis, Self-assembly, Disassembly, and Reassembly of Two Types of Cu₂O Nanocrystals Unifaceted with {001} or {110} Planes", Journal of the American Chemical Society, Vol. 132 (2010) pp. 6131-6144. 146. M.L. Pang and H.C. Zeng, "Highly Ordered Self-Assemblies of Submicron Cu₂O Spheres and Their Hollow Chalcogenide Derivatives", Langmuir, Vol. 26 (2010) pp. 5963-5970. 145. S.M. Zhang and H.C. Zeng, "Solution-Based Epitaxial Growth of Magnetically Responsive Cu@Ni Nanowires", Chemistry of Materials, Vol. 22 (2010) pp. 1282-1284. 144. Y.X. Zhang, B. Gao, G. Li Puma, A.K. Rayand H.C. Zeng "Self-Assembled Au/TiO₂/CNTs Ternary Nanocomposites for Photocatalytic Applications", Science of Advanced Materials, Vol. 2 (2010) pp. 503-513. 143. T.L. Wang, C.H. Yang, Y.T. Shieh, A.C. Yeh, L.W. Juan and H.C. Zeng, "Synthesis of New Nanocrystal-Polymer Nanocomposite as the Electron Acceptor in Polymer Bulk Heterojunction Solar Cells", European Polymer Journal, Vol. 46 (2010) pp. 634-642. 142. Y.X. Zhang and H.C. Zeng, "Gold(I)-Alkanethiolate Nanotubes", Advanced Materials, Vol. 21 (2009) pp. 4962-4965. (Highlight) 141. C.C. Li, X.M. Yin, T.H. Wang and H.C. Zeng, "Morphogenesis of Highly Uniform CoCO₃ Submicron Crystals and Their Conversion to Mesoporous Co₃O₄ for Gas-Sensing Applications", Chemistry of Materials, Vol. 21 (2009) pp. 4984-4992. 140. D.P. Wang and H.C. Zeng, "Multifunctional Roles of TiO₂ Nanoparticles for Architecture of Complex Core-Shells and Hollow Spheres of SiO₂-TiO₂-Polyaniline System", Chemistry of Materials, Vol. 21 (2009) pp. 4811-4823. 139. D.P. Wang and H.C. Zeng, "Nanocomposites of Anatase-Polyaniline Prepared via Self-Assembly", Journal of Physical Chemistry C, Vol. 113 (2009) pp. 8097-8106. 138. B. Liu and H.C. Zeng, "Direct Growth of Enclosed ZnO Nanotubes", Nano Research, Vol. 2 (2009) pp. 201-209. (Freely accessed) 137. S.M. Zhang and H.C. Zeng, "Self-Assembled Hollow Spheres of b-Ni(OH)₂ and Their Derived Nanomaterials", Chemistry of Materials, Vol. 21 (2009) pp. 871-883. 136. K.X. Yao and H.C. Zeng, "Architectural Processes and Physicochemical Properties of CoO/ZnO and Zn_1-xCo_xO/Co_1-yZn_yO Nanocomposites", Journal of Physical Chemistry C, Vol. 113 (2009) pp. 1373-1385. 135. K.X. Yao and H.C. Zeng, "Fabrication and Surface Properties of Composite Films of SAM/Pt/ZnO/SiO₂", Langmuir, Vol. 24 (2008) pp. 14234-14244. 134. B. Liu and H.C. Zeng, "Carbon Nanotubes Supported Mesoporous Mesocrystals of Anatase TiO₂", Chemistry of Materials, Vol. 20 (2008) pp. 2711-2718. 133. Y.X. Zhang and H.C. Zeng, "Mesoscale Spherical and Planar Organizations of Gold Nanoparticles", Functional Materials Letters, Vol. 1 (2008) pp. 43-53. (Freely accessed) 132. Y.X. Zhang and H.C. Zeng, "Surfactant Mediated Self-Assembly of Au Nanoparticles and Their Related Conversion to Complex Mesoporous Structures", Langmuir, Vol. 24 (2008) pp. 3740-3746. 131. J. Li and H.C. Zeng, "Hollowing Sn-Doped TiO₂ Nanospheres via Ostwald Ripening", Journal of the American Chemical Society, Vol. 129 (2007) pp. 15839-15847. 130. B. Liu and H.C. Zeng, "Hollow ZnO Microspheres with Complex Nanobuilding Units", Chemistry of Materials, Vol. 19 (2007) pp. 5824-5826. 129. K.X. Yao and H.C. Zeng, "ZnO/PVP Nanocomposite Spheres with Two Hemispheres", Journal of Physical Chemistry C, Vol. 111 (2007) pp. 13301-13308. 128. J. Li, S.B. Tang, L. Lu and H.C. Zeng, "Preparation of Nanocomposites of Metals, Metal Oxides and Carbon Nanotubes via Self-Assembly", Journal of the American Chemical Society, Vol. 129 (2007) pp. 9401-9409. 127. H.C. Zeng, "Oriented Attachment: A Versatile Approach for Construction of Nanomaterials", International Journal of Nanotechnology, Vol. 4 (2007) pp. 329-346 (Invited Article). 126. Y.X. Zhang and H.C. Zeng, "Gold Sponges Prepared via Hydrothermally Activated Self-Assembly of Au Nanoparticles", Journal of Physical Chemistry C, Vol. 111 (2007), pp. 6970-6975. 125. H.C. Zeng, "Ostwald Ripening: A Synthetic Approach for Hollow Nanomaterials", Current Nanoscience, Vol. 3 (2007) pp. 177-181 (Invited Review). (Freely accessed) 124. K.X. Yao, R. Sinclair, and H.C. Zeng, "Symmetric Linear Assembly of Hourglass-like ZnO Nanostructures", Journal of Physical Chemistry C, Vol. 111 (2007) pp. 2032-2039. 123. J. Li and H.C. Zeng, "Preparation of Monodisperse Au/TiO₂ Nanocatalysts via Self-Assembly", Chemistry of Materials, Vol. 18 (2006) pp. 4270-4277. 122. Y.X. Zhang and H.C. Zeng, "Template-Free Parallel One-Dimensional Assembly of Gold Nanoparticles", Journal of Physical Chemistry B, Vol. 110 (2006) pp. 16812-16815 (Letter). 121. K.X. Yao and H.C. Zeng, "Asymmetric ZnO Nanostructures with an Interior Cavity", Journal of Physical Chemistry B, Vol. 110 (2006) pp. 14736-14743. 120. J.J. Teo, Y. Chang, and H.C. Zeng, "Fabrications of Hollow Nanocubes of Cu₂O and Cu via Reductive Self-Assembly of CuO Nanocrystals", Langmuir, Vol. 22 (2006) pp. 7369-7377. 119. H.M. Chen, R.-S. Liu, H.L. Li and H.C. Zeng, "Generating Isotropic Superparamagnetic Interconnectivity for Two-dimensional Organization of Nanostructured Building Blocks", Angewandte Chemie, International Edition, Vol. 45 (2006) pp. 2713-2717. 118. Y. Wang, H.C. Zeng and J.Y. Lee, "Highly reversible lithium storage in porous SnO₂ nanotubes with coaxially grown carbon nanotube overlayers", Advanced Materials, Vol. 18 (2006) pp. 645-649. 117. H.C. Zeng, "Synthetic Architecture of Interior Space for Inorganic Nanostructures", Journal of Materials Chemistry, Vol. 16 (2006) pp. 649-662 (Feature Article; view this article). 116. B. Liu and H.C. Zeng, "Semiconductor Rings Fabricated by Self-Assembly of Nanocrystals", Journal of the American Chemical Society, Vol. 127 (2005) pp. 18262-18268. 115. K.W. Kho, Z.X. Shen, H.C. Zeng, K.C. Soo and M. Olivo, "Deposition Method for Preparing SERS-Active Gold Nanoparticle Substrates", Analytical Chemistry, Vol. 77 (2005) pp. 7462-7471. 114. J. Feng and H.C. Zeng, "Reduction and Reconstruction of Co₃O₄ Nanocubes upon Carbon Deposition", Journal of Physical Chemistry B, Vol. 109 (2005) pp. 17113-17119. 113. Y. Wang, J.Y. Lee, and H.C. Zeng, "Polycrystalline SnO₂ Nanotubes Prepared via Infiltration Casting of Nanocrystallites and Their Electrochemical Application", Chemistry of Materials, Vol. 17 (2005) pp. 3899-3903. 112. J. Li and H.C. Zeng, "Size-Tuning, Functionalization, and Reactivation of Au in TiO₂ Nanoreactors", Angewandte Chemie, International Edition, Vol. 44 (2005) pp. 4342-4345. 111. Y. Chang, M.L. Lye, and H.C. Zeng, "Large-Scale Synthesis of High-Quality Ultralong Copper Nanowires", Langmuir, Vol. 21 (2005) pp. 3746-3748 (Letter). 110. B. Liu and H.C. Zeng, 'Symmetric and Asymmetric Ostwald Ripening in Fabrication of Homogeneous Core-Shell Semiconductors", Small, Vol. 1 (2005) pp. 566-571. 109. Y. Chang, J.J. Teo, and H.C. Zeng, "Formation of Colloidal CuO Nanocrystallites and Their Spherical Aggregation and Reductive Transformation to Hollow Cu₂O Nanospheres", Langmuir, Vol. 21 (2005) pp. 1074-1079. 108. H.G. Yang and H.C. Zeng, "Synthetic Architectures of TiO₂/H₂Ti₅O₁₁×H₂O, ZnO/H₂Ti₅O₁₁×H₂O, ZnO/TiO₂/H₂Ti₅O₁₁×H₂O, and ZnO/TiO₂ Nanocomposites", Journal of the American Chemical Society, Vol. 127 (2005) pp. 270-278. 107. B. Liu and H.C. Zeng, "Fabrication of ZnO 'Dandelions' via a Modified Kirkendall Process", Journal of the American Chemical Society, Vol. 126 (2004) pp. 16744-16746. 106. H.G. Yang and H.C. Zeng, "Self-Construction of Hollow SnO₂ Octahedra Based on Two-Dimensional Aggregation of Nanocrystallites", Angewandte Chemie, International Edition, Vol. 43 (2004) pp. 5930-5933. 105. R. Xu and H.C. Zeng, "Self-Generation of Tiered Surfactant Superstructures for One-Pot Synthesis of Co₃O₄ Nanocubes and Their Close- and Non-Close-Packed Organizations", Langmuir, Vol. 20 (2004) pp. 9780-9790. 104. H.G. Yang and H.C. Zeng, "Creation of Intestine-like Interior Space for Metal Oxide Nanostructures with a Quasi Reverse Emulsion", Angewandte Chemie, International Edition, Vol. 43 (2004) pp. 5206-5209. 103. B. Liu and H.C. Zeng, "Mesoscale Organization of CuO Nanoribbons: Formation of ‘Dandelions’", Journal of the American Chemical Society, Vol. 126 (2004) pp. 8124-8125. Book Chapters 4. H.C. Zeng, "Synthetic Architecture of Inorganic Nanomaterials", in Nanocrystalline Materials: Their Synthesis-Structure-Property Relationships and Applications, Elsevier Science, 2006, Chapter 2, pp. 25-56. 3. H.C. Zeng, "Solid-State Synthesis of Carbon Nanotubes", in Encyclopaedia of Nanoscience and Nanotechnology, American Scientific Publishers, 2004, Vol. 10, pp. 57-66. 2. H.C. Zeng, "Nanostructured Catalytic Materials: Design and Synthesis", in The Dekker Encyclopedia of Nanoscience and Nanotechnology, Marcel Dekker, 2004, pp. 2539-2550. 1. H.C. Zeng, "Carbon Nanotube Based Nanocomposites", in Handbook of Organic-Inorganic Hybrid Materials and Nanocomposites, Volume 2: Nanocomposites, American Scientific Publishers, 2003, Chapter 4, pp. 151-180.		Hua Chun Zeng (曾华淳) ResearcherID Current Research Areas synthetic architecture of nanomaterials self-assembly for complex nanostructures Synthetic Architecture of Nanomaterials: In recent years, synthesis of zero-, one-, two- and three-dimensional (0D, 1D, 2D and 3D) materials has become a focal area in nanostructured materials research, owing to their many low dimensional characteristics different from the bulk properties. To constitute a complete toolbox for the "bottom-up" approach in nanotechnology, the ability of making functional materials into various artificial nanokits and nanoparts is essential. Nanostructured materials can be prepared with constrained or unconstrained synthetic methods, in which inorganic or organic templates (e.g., porous oxides, well-oriented crystal planes, organic ligands, solution inhomogeneity, and supramolecular arrays) have been utilized. In addition to the template-assisted methods, a number of template-free approaches (such as Ostwald ripening and Kirkendall effect for solid evacuation in forming hollow nanostructures) have also been developed. Our research is focused on development of novel synthesis methods for complex and composite nanobuilding blocks and their related self-assemblies. In analogy to total synthesis of organic compounds, complex inorganic nanostructures with aesthetic expression can be prepared in solution media via synthetic architecture, in which fabrication of building components and their organizations may take place simultaneously or consecutively. In particular, large-scale synthesis and organization of light-absorbing semiconducting nanostructures in a control manner have formed a main part of the research program. Applications of these nanomaterials are directed to chemical sensing, photocatalysis, energy storage, solar-cells, and medical diagnosis etc in many advanced technologies. *View example* Self-Assembly for Complex Nanostructures: One of the major technological challenges in nanoscience and nanotechnology is the self-assembly of tiny nano-building units (nanokits and nanoparts) into larger organized conformations and geometrical architectures for device applications. Nonetheless, most of morphological organizations of nanomaterials to-date are mainly focused on organic surfactant assisted self-assembly at low or moderate temperatures. To make organized nanomaterials usable in high-temperature environments (e.g., heterogeneous catalysis and laboratory-on-a-chip applications), large-scale organization of inorganic (such as metals and metal oxides) nanostructures in a control manner at elevated temperatures is highly desirable. We had recently adventured into this emerging field; our research is concentrated on the exploration of various novel organization schemes such as "oriented attachment", growth-cum-assembly processes, lattice-strain-induced organization, space-predefined assembly, tiered architectures at multiple length scales, and in-situ generation of surface capping for self-assembly under one-pot conditions, including design and integration of inorganic-organic nanohybrids. *View example* Nanolinks: *NanoToday* *Nanowerk* *NanoDesigners* Images from Our Research: