报告题目：Design of Nanomaterials for Photocatalysis and Oil-water Separation

报告 人：王鹏 博士

沙特阿拉伯阿卜杜拉国王科技大学

时 间：2013年8月15日（星期四）下午3:00

地 点：中山大学南校区地环大楼C608

主持 人：李适宇教授

欢迎广大师生参加!

Professor Peng Wang

Assistant Professor and Chair of Environmental Science and Engineering

Water Desalination and Reuse Center

Biological and Environmental Science and Engineering Division

King Abdullah University of Science and Technology, Thuwal 23955-6900, Saudi Arabia Email: peng.wang@kaust.edu.sa; webpage: http://faculty.kaust.edu.sa/sites/pengwang

Abstract

My presentation will consist of two portions: (1) student recruitment and (2) academic seminar. In the student recruitment part, I will first introduce KAUST, a new university in Saudi Arabia, and then spend some time talking about Environmental Science and Engineering program at KAUST, including the current faculty, research focuses, and student composition, etc. In the academic part, I will cover two separate topics: nanomaterials for water splitting and smart materials for oil-water separation. First, I will introduce two-step anodization method for the morphology control of the hierarchical top-layer/bottom-tube arrays TiO2 nanotube (TiO2 NTs) arrays and the use of the TiO2 NTs for highly efficient water purification and energy conversation. Secondly, I will talk about the block copolymer grafting strategy developed in my group for producing smart surfaces which are able to switch between superoleophilicity and superoleophobicity in aqueous media. The smart surfaces are obtained by grafting a block copolymer, comprising blocks of pH-responsive poly(2-vinylpyridine) and oleophilic/hydrophobic polydimethylsiloxane (i.e., P2VP-b-PDMS) on these materials. As a proof of concept, I will demonstrate that materials functionalized with our smart surfaces can be used for highly controllable oil/water separation processes and serves as highly regenerable sorbents for oil spill cleanup (the materials can capture and release oil on demand).

Biography

Professor Peng Wang received his BS and MS in Environmental Science from Nanjing University and Sun Yat-Sen University respectively and obtained his PhD in Environmental Science and Management from University of California at Santa Barbara (UCSB). He joined King Abdullah University of Science and Technology (KAUST) in 2009 and currently serves as the program chair of Environmental Science and Engineering (EnSE) at KAUST. He is the principal investigator of Environmental Nanotechnology Laboratory at KAUST and his current research focuses on (1) development of multifunctional porous nanomaterials for highly efficient and selective removal of water decontaminants; (2) interfacial materials with controllable surface wettability for oil/water separation, water collection, oil spill cleanup, and anti-fouling surfaces; (3) anodized nanostructure array based photoelectrocatalysis and photocatalysis for water purification and water splitting. More details of Professor Peng Wang research can be found at: http://faculty.kaust.edu.sa/sites/pengwang.