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Qin, Chaochao,Zhai, Hongsheng,Zhang, Xianzhou,Liu, Yufang Korean Chemical Society 2014 Bulletin of the Korean Chemical Society Vol.35 No.11
We theoretically investigated the coherent control of Autler-Townes splitting in photoelectron spectroscopy of K2 molecule within an ultrafast laser pulse by solving the time-dependent Schrodinger equation using a quantum wave packet method. It was theoretically shown that we can manipulate the splitting of photoelectron spectroscopy by altering the laser intensity. Furthermore, it was found that the percentages of each peak in photoelectron spectroscopy can be controlled by changing the envelope of the laser pulse.
Chaochao Qin,Hongsheng Zhai,Xianzhou Zhang,Yufang Liu 대한화학회 2014 Bulletin of the Korean Chemical Society Vol.35 No.11
We theoretically investigated the coherent control of Autler-Townes splitting in photoelectron spectroscopy of K2 molecule within an ultrafast laser pulse by solving the time-dependent Schrodinger equation using a quantum wave packet method. It was theoretically shown that we can manipulate the splitting of photoelectron spectroscopy by altering the laser intensity. Furthermore, it was found that the percentages of each peak in photoelectron spectroscopy can be controlled by changing the envelope of the laser pulse.
Removal of gaseous toluene by nonthermal plasma coupled with wet scrubber containing Fe2+
Chaochao Jiang,Caihong Qin,Mengke Guo,Jiayu Huang,Dongjie Yan,Xiaoqing Dang 한국공업화학회 2022 Journal of Industrial and Engineering Chemistry Vol.113 No.-
A non-thermal plasma with a wet scrubber (NTP + WS) was used to degrade gaseous toluene. Comparedwith the NTP + WS/H2O system, the toluene and by-product ozone removal efficiencies were increased by10% and 85% in the NTP + WS/Fe2+ system, respectively. For 60 ppm toluene degradation, the maximummineralization rate (MR) of toluene (61%) was obtained, at the optimum Fe2+ concentration of 50 mg/L. During catalytic oxidation, the removal efficiency of toluene was limited by its solubility in WS systems. In addition, decreased Fe2+ concentration and accumulation of organics led to the system deactivation. The EPR and quenching experiments verified the presence and contribution of hydroxyl radicals (4.6%)and superoxide radicals (3.8%) to the removal efficiency of toluene. Based on the radicals and intermediatesdetected in the gas and liquid phases, a degradation mechanism for toluene in the NTP + WS/Fe2+system was proposed.
Caihong Qin,Rongrong Liu,Chaochao Jiang,Mengke Guo,Rui Yu,Jiayu Huang,Wenwen Bai,Xiaoqing Dang 한국공업화학회 2023 Journal of Industrial and Engineering Chemistry Vol.122 No.-
Non-thermal plasma coupling Fe2+ containing liquid-phase catalysis (NTP-LC/ Fe2+) can effectively reusethe byproduct ozone (O3) of NTP in LC/ Fe2+ for volatile organic compounds (VOCs) degradation. However,the low recycling rate of Fe2+/Fe3+ resulted in poor catalytic effect of the coupling system. In this study,the chelator protocatechuic acid (PCA) was added to LC/Fe2+ to enhance the removal of representativeVOC acetone. The results showed that adding PCA increased the acetone removal efficiency to 91% andkept O3 100% removed within 180 min. The mechanism of PCA-enhanced acetone degradation was thatPCA accelerated the Fe3+/Fe2+ cycle by generating PCA-Fe3+ chelates, which prevented the Fe3+ from precipitationand promoted the production of OH and O2 - for acetone oxidation.