Xi Liu – in situ TEM studies
Dr Yanbin Shen received a Young Scientist NSF Grant for her project with the title ”Direct Conversion of Methane by Ultrasonic Cavitation and Piezo-photo catalyst.” As energy shortage and environmental pollution gets worse with the world’s population growth, utilizing the carbon-based energy with high efficiency becomes more and more important. Direct conversion of the relatively abundant CH4 will contribute a lot to the sustainable development of energy but is challenging due to the highly stable C-H bond. This proposal is aiming to systematically study the mechanism of piezo-electrical material and then build an efficient catalyst system for the activation of the C-H bond at low temperature by coupling of piezoelectric, photo, and ultrasonic cavitation. The C-H bond is expected to be activated by the high energy released during the collapsing of ultrasonic cavitation bubbles at ambient temperature. To gain better fundamental understanding of the reaction mechanisms, we will focus on studying the 1) correlation between the applied strain and the crystal/electron structure of the piezoelectric material; 2) impact of the strain-induced electric potential to the charge separation, the driving force of catalytic reaction, and the type of as formed radical; 3) effect of ultrasonic frequency/amplitude to the type and concentration of as formed radicals, and to the catalytic reaction selectivity; 4) effect of morphology/size of the catalytic material, co-catalyst to the charge separation and the catalytic efficiency.
Various colleagues will hopefully contribute to this project, including Dr. Jose Gracia for the DFT calculation, Dr. Ren Su for the catalytic performance evaluation, Dr. Gilbere Mannie for the electronic band structure analysis, Dr. Yunzhe Jiao for the methane activation reaction analysis, and a PhD student Shuyuan Wang for the material synthesis.
Dr Xin Yu was awarded a Young Scientist Grant of NSFC for the project ‘Surface science study of effect of promoters promotion on structure and property of iron based catalysts’. In this three years project, Fe-based catalysts will be studied systematically using a surface science approach. The work includes 1. Study the structure and property change of Fe-based catalysts during and after reaction in syngas (CO and H2). 2. Study the promotion effect of the promoters on Fe-based catalysts. By comparing the change of Fe-based catalysts with and without promotion during reaction conditions, the information about the effect of promoters on the Fe-based catalysts can be obtained.
Last year Dr Ren Su also received an NSFC Young Scientist Grant for his photocatalysis studies.
Only Chinese Nationals qualify for this type of funding.
Published on August 25, 2016