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| 1 | Adsorption behavior of benzenesulfonic acid by novel weakly basic anion exchange resins显示文摘Two novel weakly basic anion exchange resins(SZ-1 and SZ-2) were prepared via the reaction of macroporous chloromethylated polystyrene-divinylbenzene(Cl-PS-DVB) beads with dicyclohexylamine and piperidine, respectively. The physicochemical structures of the resulting resins were characterized using Fourier Transform Infrared Spectroscopy and pore size distribution analysis. The adsorption behavior of SZ-1 and SZ-2 for benzenesulfonic acid(BA) was evaluated, and the common commercial weakly basic anion exchanger D301 was also employed for comparison purpose. Adsorption isotherms and influence of solution p H, temperature and coexisting competitive inorganic salts(Na2SO4and Na Cl) on adsorption behavior were investigated and the optimum desorption agent was obtained.Adsorption isotherms of BA were found to be well represented by the Langmuir model.Thermodynamic parameters involving ΔH, ΔG and ΔS were also calculated and the results indicate that adsorption is an exothermic and spontaneous process. Enhanced selectivity of BA sorption over sulfate on the two novel resins was observed by comparison with the commercial anion exchanger D301. The fact that the tested resins loaded with BA can be efficiently regenerated by Na Cl solution indicates the reversible sorption process. From a mechanistic viewpoint, this observation clearly suggests that electrostatic interaction is the predominant adsorption mechanism. Furthermore, results of column tests show that SZ-1possesses a better adsorption property than D301, which reinforces the feasibility of SZ-1for potential industrial application. | Yue Sun Peng Zuo Junfen Luo Rajendra Prasad Singh | 2017 | Journal of Environmental Sciences2017，29，4： | 3 |
| 2 | The effects of carbonization time on the properties and structure of PAN-based activated carbon hollow fiber显示文摘 | JUNFEN SUN GUANGXIANG WU QINGRUI WANG | 2005 | Journal of Materials Science2005，40，3： | 1 |
| 3 | Effect of activation time on the structure and properties of PAN-based activated carbon hollow fiber显示文摘 | Junfen Sun Xiaqin Wang | 2006 | J Appl Polym Sci2006，99，5： | 1 |
| 4 | Effect of activation temperature on the structure and properties of PAN-based Activated carbon hollow fiber显示文摘 | Junfen Sun Qingrui Wang | 2006 | J Appl Polym Sci2006，100，5： | 1 |
| 5 | Adsorption properties of polyacrylonitrile-based activated carbon hollow fiber显示文摘 | Sun Junfen Wu Guangxiang Wang Qingrui | 2004 | Journal of Applied Polymer Science2004，93，2： | 1 |
| 6 | Poly(vinylidene fluoride)/polyethersulfone blend membranes: Effects of solvent sort, polyethersulfone and polyvinylpyrrolidone concentration on their properties and morphology 显示文摘 | Lishun Wu Junfen Sun Qingrui Wang | 2006 | Journal of Membrane Science2006，285，： | 1 |
| 7 | Poly(vinyli-dene fluoride)/Polyethersulfone blend memebranes:effects of solvent sort,polyethersulfone and polyvi-nylpyrrolidone concentration on their properties andmorphology显示文摘 | Wu Lishun Sun Junfen Wang Qingrui | 2006 | J Membr Sci2006，285，： | 1 |
| 8 | 显示文摘 | Wu Lishun Sun Junfen Wang Qingrui | 2006 | Journal of Mem- brane Science2006，285，12： | 1 |
| 9 | Novel function of biguanides in inhibition of phospholipase D1 expression via a translational mechanism in cancer cells显示文摘Phospholipase D(PLD)and its product phosphatidic acid(PA)function as pleiotropic factors in the regulation of cancer progression,which includes the promotion of cell growth,survival,cell migration,and angiogenesis.1 Chemical inhibition of the enzymatic activity of PLD1 and PLD2,or genetic down-regulation of their expression both induce tumor suppression,1 while the compounds for PLD expression inhibition are barely reported.Here,we astonishingly found that the anti-hyperglycemic agents biguanides decreased PLD1 protein expression in cancer cells and further investigated its underlying regulatory mechanism. | Yuanfa Yao Hanbing Li Xinyi Wang Yuanhai Sun Xuqin Zhao Weiwei Zha Jiaqiang Zhou Derek Toomre Junfen Fu Yingke Xu | 2023 | Genes & Diseases2023，10，5： | 0 |
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