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| 1 | A comparative study and evaluation of sulfamethoxazole adsorption onto organo-montmorillonites显示文摘Three organo-montmorillonites were prepared using surfactants,and their adsorption behaviors toward sulfamethoxazole(SMX)were investigated.The surfactants used were cetyltrimethyl ammonium bromide(CTMAB),3-(N,N-dimethylhexadecylammonio)propane sulfonate(HDAPS)and 1,3-bis(hexadecyldimethylammonio)-propane dibromide(BHDAP).The properties of the organo-montmorillonites were characterized by X-ray diffraction,scanning electron microscopy and N2adsorption–desorption isotherm measurements.Results showed that the interlayer spacing of montmorillonite was increased and the surface area as well as the morphology were changed.Batch adsorption experiments showed that the surfactant loading amount had a great effect on the adsorption of SMX.The adsorption process was p H dependent and the maximum adsorption capacity was obtained at p H 3 for HDAPS-Mt,while CTMAB-Mt and BHDAP-Mt showed a high removal efficiency at 3–11.The adsorption capacity increased with the initial SMX concentration and contact time but decreased with increasing solution ionic strength.Kinetic data were best described by the pseudo second-order model.Equilibrium data were best represented by the Langmuir model,and the Freundlich constant(n)indicated a favorable adsorption process.The maximum adsorption capacity of SMX was 235.29 mg/g for CTMAB-Mt,155.28 mg/g for HDAPS-Mt and 242.72 mg/g for BHDAP-Mt.Thermodynamic parameters were calculated to evaluate the spontaneity and endothermic or exothermic nature.The adsorption mechanism was found to be dominated by electrostatic interaction,while hydrophobic interaction played a secondary role. | Laifu Lu Manglai Gao Zheng Gu Senfeng Yang Yuening Liu | 2014 | Journal of Environmental Sciences2014，26，12： | 7 |
| 2 | Advances in studies of the tribological behavior of molecular deposition films显示文摘An overview of the advances in studies on tribology of molecular deposition(MD)films is presented here to summarize the studies of nanofrictional properties,adhesion,wear and mechanical behavior,as well as the molecular dynamics simulation of nanotribological properties of the film in the last decade.Some key research topics which need to be investigate further are addressed. | Xiao Yuqi Zhang Siwei Wang Deguo Gao Manglai | 2008 | Petroleum Science2008，5，4： | 1 |
| 3 | Tribological application of molecular deposition (MD)films显示文摘 | Qiangbin Wang Manglai Gao Siwei Zhang | 1999 | Materials Science and Engineering C1999，10，12： | 1 |
| 4 | Nano-scratch study of molecular deposition films on silicon wafers using nano-indentation显示文摘 | Wang Deguo Zhang Siwei Gao Manglai | 2003 | Tribotest2003，9，3： | 1 |
| 5 | The remov-al of p-nitrophenol from aqueous solutions by adsorption using gemini surfactants modified montmorillonites显示文摘 | Guanghai Xue Manglai Gao Zheng Gu | | 0，，15： | 1 |
| 6 | Adsorption of 2 - naphthol on the organo - montmorillonites modified by Gemini surfactants with different spacers 显示文摘 | YANG SENFENG GAO MANGLAI LUO ZHONGXIN | 2014 | Chemical Engineering Journal2014，256，： | 1 |
| 7 | Comparison between the removal of phenol and catechol by modified montmoril- lonite with two novel hydroxyl - containing Gemini surfactants 显示文摘 | LIU YUENING GAO MANGLAI GU ZHENG | 2014 | Journal of Hazardous Materials2014，256，： | 1 |
| 8 | Nanofriction properties of molecular deposition films显示文摘 | Qiangbin Wang Manglai Gao Siwei Zhang | 2000 | Science in China Series B: Chemistry2000，，2： | 1 |
| 9 | Nano-scratch study of molecular deposition (MD) films on silicon wafer using nanoindentation^1显示文摘Experiment of the molecular deposition (MD) films with and without alkyl terminal de-posited on the silicon wafer were conducted by using nanoindentation. It was found that MD filmsand alkyl terminated MD films exhibit higher critical load (scratch resistance or adhesive strength)and lower coefficient of friction compared with the silicon substrate. Critical load (scratch resis-tance) increases with the number of layers, and coefficients of friction of those MD film with alkylterminal are still best for the same layer of MD film. | WANG Deguo ZHANG Siwei GAO Manglai University of Petroleum, Beijing 102200, China | 2001 | Science China Mathematics2001，44，S1： | 1 |
| 10 | Study on nanofriction properties of molecular deposition (MD)films on the Au substrate by atomic force microscopy显示文摘 | Wang Qiangbin Gao Manglai Zhang Siwei | 1999 | Progress in Natural Science1999，9，10： | 1 |
| 11 | Nanofriction properties of molecular deposition films显示文摘 | Qiangbin Wang Manglai Gao Siwei Zhang | 2000 | Science in China Series B: Chemistry2000，，2： | 1 |
| 12 | Nanofriction properties of molecular deposition films显示文摘 | Qiangbin Wang Manglai Gao Siwei Zhang | 2000 | Science in China Series B: Chemistry2000，，2： | 1 |
| 13 | Selective capture of silver ions from aqueous solution by series of azole derivatives-functionalized silica nanosheets显示文摘The introduction of bifunctional groups into low-cost adsorbents for selective adsorption of Ag(I) through synergistic effect will have a profound impact on the recovery of precious metals. Organo silica nanosheets(organo-Si NSs) functionalized by series of azole derivatives(2-mercaptoimidazole(MI), 2-mercaptobenzimidazole(MBT) and 1H-1,2,4-triazole-3-thiol(MTT)), are fabricated and employed for selective removal of Ag(I). The structures of the organo-Si NSs are investigated using several characterization methods. The results of batch adsorption experiments display that the maximum adsorption amounts are 70.3, 103.2 and 139.5 mg·g^(-1) on MI-Si NSs, MBI-Si NSs and MTT-Si NSs for Ag(I) ions, and reach rapid equilibrium within 10–30 min. The adsorption processes are chemisorption and fit pseudo-second-order kinetic model and Langmuir adsorption isotherm model. Notably, MTT-Si NSs is greatly selective for Ag(I) in multicomponent system, and the distribution coefficient value of Ag(I) ions reaches 2331.26 ml·g^(-1). The reusability of organo-Si NSs is verified by four cycles of regeneration tests with 0.1 mol·L^(-1) HNO_(3) as the eluent. A combination of experimental, structural along with theoretical analysis is conducted to proclaim the structure-adsorptivity relationship:(i) The adsorption mechanisms are attributed to complexation.(ii) The amino group and sulfhydryl group of MTT-Si NSs as well as MBISi NSs may have synergistic impacts on Ag(I) capture.(iii) The differences in adsorption behavior and selectivity of the three organo-Si NSs are mainly related to the form of function groups, charge density and steric hindrance of adsorbent. This work not only sheds light on the promise of functionalized organo-Si NSs for the rapid and selective removal/enrichment of Ag(I) ions in complex water systems,but also provides new insights for designing cost-effective Si NSs-based adsorbents. | Shanshan Mao Tao Shen Qing Zhao Tong Han Fan Ding Xin Jin Manglai Gao | 2023 | Chinese Journal of Chemical Engineering2023，57，5： | 0 |
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