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| 1 | Microscopic structures of ionic liquids 1-ethyl-3-methylimidazolium tetrafluoroborate in water probed by the relative chemical shift显示文摘The relative chemical shifts (△δ) △δwere put forward to investigate the microscopic structure of 1-ethyl-3-methyl-imidazolium tetrafluoroborate (EmimBF4) during the dilution process with water.The concentration-dependent △δ(C2)H-(C4)H,△δ(C2)H-(C5)H and △δ(C4)H-(C5)H were analyzed.The results reveal that the variations of the microscopic structures of three aromatic protons are inconsistent.The strength of the H-bond between water and three aromatic protons follows the order:(C2)H···O > (C4)H···O > (C5)H···O.The concentration-dependent △δ(C6)H-(C7)H and △δ(C6)H-(C8)H indicate the formation of the H-bonds of (Calkyl)H···O is impossible,and more water is located around (C6)H than around (C7)H or (C8)H.The concentration-dependent △δ(C2)H-(C4)H and △δ(C2)H-(C5)H both increase rapidly when xwater > 0.9 or so,suggesting the ionic pairs of EmimBF4 are dissociated rapidly.The turning points of concentration-dependent △δ(C2)H-(C4)H and △δ(C2)H-(C5)H indicate that some physical properties of the EmimBF4/water mixtures also change at the corresponding concentration point.The microscopic structures of EmimBF4 in water could be clearly detected by the relative chemical shifts. | XU YingJie GAO Yan ZHANG LiQun YAO Jia WANG CongMin LI HaoRan | 2010 | Science China Chemistry2010，53，7： | 8 |
| 2 | Pitting corrosion behavior of 316L stainless steel in the media of sulphate reducing and iron-oxidizing bacteria显示文摘 | Xu Congmin Zhang Yaoheng Cheng Guangxu | 2008 | Materials Characterization2008，59，3： | 1 |
| 3 | Synergistic effect of polyoxometalate solution and TiO_2 under UV irradiation to catalyze formic acid degradation and their application in the fuel cell and hydrogen evolution显示文摘The synergistic effect of H_3PMo_(12)O_(40) or H_3PW_(12)O_(40) polyoxometalate solution(POM) and TiO_2 to catalyze formic acid oxidation was investigated. Under UV irradiation, hole and electron were photogenerated by TiO_2. Formic acid was oxided by the photogenerated hole and photogenerated electron was transferred to reduce polyoxometalate. With this design, formic acid can be converted into electricity in the fuel cell and hydrogen can be generated in the electrolysis cell without noble metal catalyst. Unlike other noble metal catalysts applied in the fuel cells and electrolysis cell, POM and TiO_2 are stable and low cost. The maximum output power density of liquid formic acid fuel cell after 12 h UV irradiation is 5.21 mW/cm^2 for phosphmolybdic acid and 22.81 m W/cm^2 for phosphotungstic acid respectively. The applied potential for the hydrogen evolution is as low as 0.8 V for phosphmolybdic acid and 0.6 V for phosphotungstic acid. | Congmin Liu Zhe Zhang Wei Liu Xu Du Shi Liu Yong Cui | 2017 | Green Energy & Environment2017，2，4： | 1 |
| 4 | Localized corrosion behav- ior of 316L stainless steel in the presence of sulfate-reducing and iron-oxidizing bacteria显示文摘 | Congmin Xu Yaoheng Zhang Guangxu Cheng | 2007 | Materials Science and Engineering2007，，： | 1 |
| 5 | Pitting corrosion behavior of 316L stainless steel in the media of sulphate-reducing and iron-oxidizing bacteria 显示文摘 | Congmin Xu Yaoheng Zhanga Guangxu Cheng | 2007 | Materials Characterization2007，59，： | 1 |
| 6 | Pitting corrosion behavior of 316L stainless steel in the media of sulphate-reducing and iron-oxidizing bacteria显示文摘 | Congmin Xu Yaoheng Zhang Guangxu Cheng Wensheng Zhu | 2007 | Materials Characterization2007，，3： | 1 |
| 7 | Study of cadmium(Cd)-induced oxidative stress in Eisenia fetida based on mathematical modelling显示文摘As a sensitive biological indicator,earthworms are widely used to monitor various pollutants of soil and provide an early warning for soil pollution.However,because many indices are involved in the exposure-induced oxidative stress response,practical applications of these indices are quite inconvenient.Therefore,it is appropriate to investigate the key monitoring index for use in early warning and pollution monitoring.Using Eisenia fetida as an experimental model in an indoor simulation experiment,the mathematical modelling of the effect on oxidative stress in earthworms under cadmium(Cd)stress was studied.The test lasted 40 d,with the removal of one earthworm every 10 d.The Cd2+concentration gradient was set as 0,1,10,20,100,200,400,and 800 mg kg^(-1) dry weight.The earthworms were divided into two sections from the clitellum for the determination of total protein(TP)and peroxidase(POD),superoxide dismutase(SOD),glutathione-S-transferase(GST),glutathione peroxidase(GPX),catalase(CAT),malondialdehyde(MDA),and acetylcholinesterase(AChE)activities.Results showed that POD was the key index of oxidative stress in head tissues after 10 d of exposure,TP was the key index at 20 d,and POD became the key index again at 30 and 40 d.By contrast,in tail tissues,MDA and SOD were the key indices at an exposure time of 10 d,GPX at 20 d,CAT and TP at 30 d,and POD and MDA at 40 d.These results contribute to establishing a scientific method for ecotoxicological diagnosis and revealing the mechanism of soil Cd toxicity. | Yucui NING Haoran ZHOU Enze WANG Congmin JIN Ying YU Xu CAO Dongxing ZHOU | 2021 | Pedosphere2021，31，3： | 0 |
| 8 | Flow fuel cell powered by combustible agricultural waste显示文摘Combustible agricultural waste is a potential source of energy because of its high organic content and heating value.As China’s economy develops,energy demand increases while environmental protection becomes more stringent.These competing demands make it urgent to find environmentally acceptable ways to extract energy from agricultural wastes.In this study,a liquid catalyst flow fuel cell(FFC)directly powered by combustible agricultural waste is investigated.This type of flow fuel cell can directly convert combustible agricultural waste at atmospheric pressure to electricity at 80-150℃and it is environmentally friendly.Polyoxometalates act as catalysts and charge carriers to drive the FFC.Wheat straw and wine residues were used to represent the main components of combustible agricultural waste.Experiment results indicated that the power density reached as high as 111 mW/cm^(2),hundreds of times higher than the output of a microbial cell. | Congmin Liu Zhe Zhang Wei Liu Dong Xu Hua Guo Guangli He Xianming Li Yulin Deng | 2018 | Clean Energy2018，2，1： | 0 |
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