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趙然
華東師大物理與材料科學學院副教授
華東師範大學理工學院物理學系納米中心副教授
辦公地點:中北校區物理樓140室
通訊地址:上海普陀區中山北路1663號華東師範大學物理樓140房間
目錄
在華東師範大學物理與材料科學學院擔任“現代水處理技術”、“物理學前沿進展”等課程的教學工作。在各類SCI期刊上發表論文11篇,其中包括《Water Research》,《Energy & Environmental Science》等環境技術類一流期刊,有2篇論文入選Web of Science高被引論文,4篇文章被引用100次以上,總被引用超過800次。主要的研究領域集中在以下兩個方向:
一、電容器去離子
電容器去離子是一種新型的海水淡化,鹹水脫鹽和污染物分離的技術。它利用成對的多孔導電電極通過離子雙電層原理對於水體中的離子和極性分子進行有效吸附。研究領域有以下幾個方面:
(1)新型電極材料的研究,包括氮摻雜海綿體氧化石墨烯、金屬有機物框架、介孔活性炭。
(2)新型離子交換膜的研究,包括陰陽離子交換膜,特殊離子選擇性交換膜。
(3)器件結構的研究,包括線式(wire),卷式(spiral wound),傳統平板式,流體電極式,滲透式等各種電容去離子器件
(4)基於離子雙電層模型和唐南模型的平衡態和基於能斯特普朗克原理的動態化工模型的研究。
二、電容混合法產能
電容混合法產能技術是基於通過混合不同離子濃度的水溶液,從化學勢能差中獲得能量的新型發電方式,可以直接產生直流電,無次生污染與溫室氣體排放,研究主要集中在以下3個方面:
(1)電容雙電層膨脹法產能(CDLE)的實驗研究。CDLE的方法非常直接,電極首先在海水中充直流電。達到飽和后,在斷路狀態,用淡水取代海水。由於雙電層外部本體溶液的濃度的降低,雙電層的膨脹效應展現,電極的電壓會增加,使系統能量增大。通過放電,可以獲得較高的電能。
(2)電容唐南電勢法的研究。原理與CDLE類似,但是通過對電極表面進行離子交換樹脂塗覆,可以省去外接電源,直接通過離子交換膜兩側形成的唐南電勢驅動電池,對系統供電,並在海水和淡水沖洗過程中皆可以產生能量。
(3)中和法產能。此方法目前尚在理論驗證階段,使用離子遷移速率的差值和離子交換膜的濃度差進行產能發電。
社會兼職:
國際電化學學會(International Society of ELectrochemistry)會員
學術成果:
Publications
Zhao, R., Biesheuvel, P.M., Miedema, H., Bruning, H. and van der Wal, A. (2010) Charge Efficiency: A Functional Tool to Probe the Double-Layer Structure Inside of Porous Electrodes and Application in the Modeling of Capacitive Deionization. The Journal of Physical Chemistry Letters, 1, 205.
Zhao, R., van Soestbergen, M., Rijnaarts, H.H.M., van der Wal, A., Bazant, M.Z. and Biesheuvel, P.M. (2012) Time-dependent ion selectivity in capacitive charging of porous electrodes. Journal of Colloid and Interface Science, 384, 38.
Zhao, R., Biesheuvel, P.M. and Van der Wal, A. (2012) Energy Consumption and Constant Current Operation in Membrane Capacitive Deionization. Energy & Environmental Science, 5, 9520.
Zhao, R., O. Satpradit, M., Rijnaarts, H.H.M., van der Wal, A., and Biesheuvel, P.M. (2013) Optimization of salt adsorption rate in membrane capacitive deionization. Water Research, 47, 1941.
Zhao, R., Porada, S., Biesheuvel, P.M. and Van der Wal, A. (2013) Energy consumption in membrane capacitive deionization for different water recoveries and flow rates, and comparison with reverse osmosis, 330, 35.
S. Porada, S., Zhao, R., van der Wal, A., Presser, V., Biesheuvel, P.M. (2013) Review on the Science and Technology of Water Desalination by Capacitive Deionization. Progress in Material Science, 58, 1388.
Brogioli, D., Zhao, R. and Biesheuvel, P.M. (2011) A prototype cell for extracting energy from a water salinity difference by means of double layer expansion in nanoporous carbon electrodes. Energy & Environmental Science, 4, 772.
Biesheuvel, P.M., Zhao, R., Porada, S. and van der Wal, A. (2011) Theory of membrane capacitive deionization including the effect of the electrode pore space. Journal of Colloid and Interface Science, 360, 239.
Dykstra, J.E., Zhao, R.,Biesheuvel, P.M., vander Wal, A. (2015) Resistance identification and rational process designin Capacitive Deionization.Water Research
Conferences:
13th NYM international conference 2011, Twente University in Enschede, the Netherlands
Oral presentation: How to improve the performance of capacitive deionization by using ion-exchange membranes
International Congress on Membranes and Membrane Processes, Amsterdam, the Netherlands, 2011
Poster presentation: Membrane Capacitive Deionization
The 10th International Symposium on Electrokinetic Phenomena, Tsukuba, Japan, 2012
Oral presentation: Time-dependent ion selectivity in capacitive charging of porous electrodes by capacitive deionization
3rd International Symposium on Enhanced Electrochemical Capacitors, Taormina, Italy, 2013
Poster presentation: Energy consumption in membrane capacitive deionization and the comparison with reverse osmosis
Chairman of wetsus Congress 2013, New Water Sources Session, Leeuwarden, The Netherlands, 2013