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TiO2-incorporated polyelectrolyte composite membrane with transformable hydrophilicity/hydrophobicity for nanofiltration separation

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Chinese Journal of Chemical Engineering 2020年第10期28卷 2533-2541页

作者： Yahua Lu Zhenping Qin Naixin Wang Hongxia Guo Quanfu An yucang liang Beijing Key Laboratory for Green Catalysis and Separation College of Environmental and Energy EngineeringBeijing University of TechnologyBeijing 100124China College of Materials Science and Engineering Beijing University of TechnologyKey Laboratory of Advanced Functional MaterialsMinistry of EducationBeijing 100124China Institut für Anorganische Chemie Eberhard Karls Universität TübingenAuf der Morgenstelle 18Tübingen 72076Germany

The wettability of the membrane surface has shown obvious influent on the separation performance of the *** this work,a hydrophilic PDA-[PDDA/TiO2]+Cl-membrane was prepared by a one-step codeposition of poly(diallyldimethylammonium chloride)(PDDA)polyelectrolyte solution containing positively charged TiO2@PDDA nanoparticles with the assistance of dopamine(DA).Such positively charged membrane can be transformed into a hydrophobic membrane PDA-[PDDA/TiO2]+PFO-via the counterion exchange between Cl-and PFO-(perfluorooctanoate).The transformation between hydrophilicity and hydrophobicity is *** both hydrophilic and hydrophobic membranes,the nanofiltration performances were respectively investigated by the aqueous solution and ethanol solution of dyes including methyl blue(MB),Congo red(CR)and Evans blue(EB),and as well metal salt aqueous *** consecutive running stability and anti-fouling performance of both hydrophilic and hydrophobic membranes were *** results revealed that both membranes showed high nanofiltration performances for retention of dyes in(non)aqueous *** the hydrophilic membrane,the rejection of salts in a sequence is MgSO4>Na2SO4>MgCl2>***,both of the hydrophilic and hydrophobic membranes showed high stability and antifouling property.

关键词： Counterion exchange Wettability Reversibility Dopamine TiO2-incorporated polyelectrolyte composite membrane (non)aqueous nanofiltration

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Doping-driven dual heterogeneous interfacial structures boosting the durability of industry-compatible water splitting at high current density

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Science China Chemistry 2024年第10期67卷 3468-3481页

作者： Chunming Yang Lihai Zhou Zhijie Kong Xiang Li Wangchuan Zhu Guangqing Wang Yanzhong Zhen Feng Fu yucang liang Research Institute of Comprehensive Energy Industry Technology College of Chemistry&Chemical EngineeringYan’an UniversityYan’an 716000China Henan Key Laboratory of Crystalline Molecular Functional Materials Green Catalysis CenterCollege of ChemistryZhengzhou UniversityZhengzhou 450001China Institut für Anorganische Chemie Eberhard Karls UniversitätTübingen 72076Germany

Developing highly stable electrocatalysts under industry-compatible current densities(>500 mA cm^(-2))in an anion-exchange membrane water electrolyzer(AEMWE)is an enormous challenge for water ***,based on the results of density function theory calculations,a dual heterogeneous interfacial structured NiSe/Fe-Ni(OH)_(2)catalyst was subtly designed and successfully prepared by electrodepositing Fe-doped Ni(OH)_(2)on NiSe-loaded nickel foam(NF).Fe doping-driven heterogeneous structures in NiSe/Fe-Ni(OH)_(2)markedly boost catalytic activity and durability at industrially compatible current densities in single hydrogen and oxygen evolution reactions under alkaline *** particular,NiSe/Fe-Ni(OH)_(2)shows a negligible performance loss at 600 mA cm^(-2)at least 1,000 h for overall water splitting,a distinguished long-term durability acting as AEMWE electrodes at 600 mA cm^(-2)and 1 A cm^(-2)at 85℃for at least 95 *** to Fe doping-induced strong synergetic effect between Ni and Fe,dual heterostructure-promoted charge transfer and redistribution,abundant catalytic active sites,and improvement of stability and durability,a mechanism of Fe doping-driven heterogeneous interfacial structurepromoted catalytic performance was *** study provides a successful example of theory-directed catalyst preparation and pioneers a creative strategy for industry-compatible water splitting at high current density.

关键词： doping-induced heterojunction structure NiSe/Fe-Ni(OH)_(2) large current density anion-exchange membrane industrycompatible water electrolysis

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Ultrafast Myoglobin Adsorption into Double-Shelled Hollow Mesoporous Silica Nanospheres

Ultrafast Myoglobin Adsorption into Double-Shelled Hollow Me...

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中国化学会第十五届固态化学与无机合成学术会议

作者： yucang liang Leilei Luo Thomas Chassé Reiner Anwander Institut für Anorganische Chemie Universit?t Tübingen Institut für Physikalische und Theoretische Chemie Universit?t Tübingen

The fabrication of hollow mesoporous materials with hierarchical pore structures, regular shape, and uniform particle size via a simple and efficient approach is a major challenge. In this study, a facile preparation approach of hierarchically structured double-shelled hollow mesoporous silica nanospheres(HS-DS-HMSN) has been developed. Treatment of monodisperse nonporous silica spheres with CTAB and F127 as well as N,Ndimethylhexadecylamine as a co-surfactant under basic conditions gives access to HS-DS-HMSNs of uniform particle size(162-364 nm). Such HS-DS-HMSN-type materials show high monodispersibility in aqueous solution, a doubleshelled structure with hierarchically adjustable pore sizes, perpendicularly aligned mesochannels, and high surface areas as well as large pore volumes. On the basis of structure and morphology evolutions as well as unambiguous and reproducible experimental data, a micelle-assisted self-assembly process is proposed as a mechanism of formation, further involving co-surfactant-expanded micelles and a heterogeneous nucleation deposition. The syntheses of a series of HS-DS-HMSNs with distinct particle sizes(162-364 nm) as well as distinct inner(range of thickness/pore size: 18-41 nm/3.1-3.7 nm) and outer shells(18-41 nm/3.7-8.0 nm) verify the feasibility and effectiveness of this approach. Such HS-DS-HMSNs show an ultrahigh adsorption rate(ca. 1.7 mg mg min) and loading(ca. 300 mg g) for myoglobin(MB).

关键词： hierarchical structures hollow nanospheres adsorption mesoporous silica myoglobin

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MoS_(2)管式陶瓷膜的制备及其稳定性研究

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化工新型材料 2023年第4期51卷 197-201,207页

作者：付续刘越秦振平王妍梁玉仓郭红霞北京工业大学环境与生命学部北京绿色催化与分离重点实验室北京100124 北京工业大学材料与制造学部北京100124 德国图宾根大学无机化学研究所德国图宾根72076

以氧化铝陶瓷管为基膜,通过原位水热法制备二硫化钼(MoS_(2))管式陶瓷膜,研究了不同酸碱条件下膜的结构和纳滤分离及其稳定性变化规律。结果表明,经pH为1~11的水溶液浸渍12h后,MoS_(2)管式陶瓷膜的形貌和结构变化不明显,对伊文思蓝(EB)... 详细信息

以氧化铝陶瓷管为基膜,通过原位水热法制备二硫化钼(MoS_(2))管式陶瓷膜,研究了不同酸碱条件下膜的结构和纳滤分离及其稳定性变化规律。结果表明,经pH为1~11的水溶液浸渍12h后,MoS_(2)管式陶瓷膜的形貌和结构变化不明显,对伊文思蓝(EB)水溶液的渗透通量为231.25L/(m^(2)·h·MPa),截留率在96%以上,对EB的N,N-二甲基甲酰胺(DMF)溶液中也显示良好的纳滤分离性能;以pH为13的强碱溶液浸渍后,其分离性能略有降低。使用胶带剥离MoS_(2)管式陶瓷膜50次后,扫描电镜和纳滤分离性能表明,其分离层与陶瓷基体间具有较好的结合力,证明原位水热法制备的MoS_(2)管式陶瓷膜具有优异的稳定性。

关键词：二硫化钼管式陶瓷膜纳滤稳定性

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Calibration of discrete element modeling: Scaling laws and dimensionless analysis

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Particuology 2022年第3期20卷 55-62页

作者： yucang Wang Peter Mora Yunpei liang State Key Laboratory of Coal Mine Disaster Dynamics and Control Chongqing UniversityChongqing 400044China College of Petroleum Engineering and Geosciences King Fahd University of Petroleum and MineralsSaudi Arabia

In this paper,dynamic similarity conditions are derived for discrete element simulations by non-dimensionalising the governing *** conditions must be satisfied so that the numerical model is a good representation of the physical *** a pure mechanical system,if three independent ratios of the corresponding quantities between the two models are set,then the ratios of other quantities must be chosen according to the similarity *** scalability of linear and non-linear contact laws is also *** tests of 3D uni-axial compression are carried out to verify the theoretical *** example is presented to show how to calibrate the model according to laboratory data and similarity ***,it is impossible to reduce computer time by scaling up or down certain parameters and continue to uphold the similarity *** results in this paper provide guidelines to assist discrete element modelers in setting up the model parameters in a physically meaningful way.

关键词： Discrete element method Dimensionless analysis Dynamic similarity Parameter calibration ESyS_Particle

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基于羟丙基-β-环糊精的界面聚合纳滤膜及其性能研究

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膜科学与技术 2021年第6期41卷 118-125页

作者：李春贾萌萌张梦蕾秦振平马语晨梁玉仓郭红霞北京工业大学材料与制造学部北京100124 北京工业大学环境与生命学部北京100124 德国图宾根大学无机化学研究所图宾根72076

以羟丙基-β-环糊精(HP-β-CD)为水相单体,γ-氨丙基三乙氧基硅烷(KH-550)为添加剂,与均苯三甲酰氯(TMC)在聚砜(PSf)基膜上界面聚合,制备HP-β-CD-TMC/PSf复合纳滤膜.通过FTIR、SEM、AFM和Zeta电位等表征了膜表面的化学组分、形貌及荷电... 详细信息

以羟丙基-β-环糊精(HP-β-CD)为水相单体,γ-氨丙基三乙氧基硅烷(KH-550)为添加剂,与均苯三甲酰氯(TMC)在聚砜(PSf)基膜上界面聚合,制备HP-β-CD-TMC/PSf复合纳滤膜.通过FTIR、SEM、AFM和Zeta电位等表征了膜表面的化学组分、形貌及荷电性,探究了不同KH-550含量对PSf复合膜分离性能的影响,并考察了复合膜的耐氯性能.结果表明,水相中KH-550质量分数为0.15%时,制备的复合纳滤膜亲水性较好,对伊文思蓝(EB)、刚果红(CR)、木质素磺酸钠(SL)的截留率均在90%以上,通量大于54.5 L/(m^(2)·h·MPa).复合膜经10.0 g/L的次氯酸钠(NaClO)浸泡200 h后,其通量和截留率无明显变化,表明该复合膜具有较好的耐氯稳定性.

关键词：纳滤膜羟丙基-β-环糊精界面聚合渗透通量耐氯性能

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A coupled DEM and LBM model for simulation of outbursts of coal and gas

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International Journal of Coal Science & Technology 2015年第1期2卷 22-29页

作者： Sheng Xue liang Yuan Junfeng Wang yucang Wang Jun Xie CSIRO Energy P.O. Box 833 Kenmore QLD 4069Australia Taiyuan University of Technology Taiyuan 030024 China National Engineering Research Centre for Coal Mine Gas Control Huainan 232001 China Central Queensland University Rockhampton QLD 4702Australia Shandong University of Science & Technology Qingdao 266590 China

An outburst of coal and gas is a major hazard in underground coal mining. It is generally accepted that an outburst occurs when certain conditions of stress, coal gassiness and physical-mechanical properties of coal are met. Outbursting is recognized as a two-step process, i.e., initiation and development. In this paper, we present a fully-coupled solid and fluid code to model the entire process of an outburst. The deformation, failure and fracture of solid （coal） are modeled with the discrete element method, and the flow of fluid （gas and water） such as free flow and Darcy flow are modeled with the lattice Boltzmann method. These two methods are coupled in a two-way process, i.e., the solid part provides a moving boundary condition and transfers momentum to the fluid, while the fluid exerts a dragging force upon the solid. Gas desorption from coal occurs at the solid-fluid boundary, and gas diffusion is implemented in the solid code where particles are assumed to be porous. A simple 2D example to simulate the process of an outburst with the model is also presented in this paper to demonstrate the capability of the coupled model.

关键词： Coal and gas outburst Discrete element method Lattice Boltzmann method Solid-fluid coupling

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Advances in gas content based on outburst control technology in Huainan, China

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International Journal of Mining Science and Technology 2014年第3期24卷 385-389页

作者： Xue Sheng Yuan liang Xie Juna Wang yucang CSIRO Earth Science and Resource Engineering Kenmore QLD 4069 Australia Key Laboratory of Integrated Coal Exploitation and Gas Extraction Anhui University of Science and Technology School of Mining Engineering Taiyuan University of Science and Technology National Engineering Research Centre for Coal Mine Gas Control

The sudden and violent nature of coal and gas outbursts continues to pose a serious threat to coal mine safety in China. One of the key issues is to predict the occurrence of outbursts. Current methods that are used for predicting the outbursts in China are considered to be inadequate, inappropriate or impractical in some seam conditions. In recent years, Huainan Mining Industry Group(Huainan) in China and the Commonwealth Scientific and Industrial Research Organisation(CSIRO) in Australia have been jointly developing technology based on gas content in coal seams to predict the occurrence of outbursts in Huainan. Significant progresses in the technology development have been made, including the development of a more rapid and accurate system in determining gas content in coal seams, the invention of a sampling-while-drilling unit for fast and pointed coal sampling, and the coupling of DEM and LBM codes for advanced numerical simulation of outburst initiation and propagation. These advances are described in this paper.

关键词： Coal mining Outburst Outburst prediction Gas content Numerical model ing

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香蕉茎秆生物炭的制备及其对铜离子的吸附特性

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化工进展 2017年第4期36卷 1499-1505页

作者：余伟光黎吉辉王敦梁振益张玉苍海南大学材料与化工学院热带岛屿资源先进材料教育部重点实验室海南海口570228

香蕉茎秆经过高锰酸钾氧化预处理后于600℃缓慢热解制得生物炭。采用扫描电子显微镜(SEM)、X射线光电子能谱(XPS)、元素分析仪和比表面积及微孔分析仪对生物炭进行表征,批量吸附实验考察其对Cu^(2+)的吸附特性,研究p H、吸附时间、吸附... 详细信息

香蕉茎秆经过高锰酸钾氧化预处理后于600℃缓慢热解制得生物炭。采用扫描电子显微镜(SEM)、X射线光电子能谱(XPS)、元素分析仪和比表面积及微孔分析仪对生物炭进行表征,批量吸附实验考察其对Cu^(2+)的吸附特性,研究p H、吸附时间、吸附温度和金属离子初始浓度对吸附的影响。从吸附动力学、吸附等温线、吸附热力学判断吸附类型。结果表明:与未处理香蕉茎秆生物炭对比发现,氧化预处理生物炭表面覆盖有MnO_x微粒,且含有更多的含氧官能团,拥有更大的表面积。其对铜离子的去除主要通过表面吸附包括表面MnO_x颗粒和含氧官能团,对Cu^(2+)有很强的吸附能力,实验中最大吸附容量为81.36mg/g,吸附效果明显好于未预处理生物炭,吸附过程符合准二级动力学方程,可以用Langmuir吸附等温线模型来描述,热力学参数ΔH0>0,ΔG0<0,表明该吸附是一个自发的吸热过程。

关键词：香蕉茎秆生物炭铜离子吸附

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慢病毒介导hIL-24基因对瘢痕疙瘩成纤维细胞增殖、迁移及侵袭性的影响

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中华整形外科杂志 2014年第5期30卷 359-364页

作者：吴志远史玉仓粱杰卫裴徐孝兴吴志贤黎然医学院附属医院整形外科湛江524001 开封市中心医院烧伤整形科江门市五邑中医院骨伤科四区

目的研究人白细胞介素-24（human interleukin-24,hlL-24）基因对体外培养的人瘢痕疙瘩成纤维细胞（keloid fibroblasts,KF）增殖、迁移、侵袭性的影响.方法将携带hIL-24及绿色荧光蛋白的慢病毒载体（LV-hlL-24-GFP,KF-hIL-24组）及... 详细信息

目的研究人白细胞介素-24（human interleukin-24,hlL-24）基因对体外培养的人瘢痕疙瘩成纤维细胞（keloid fibroblasts,KF）增殖、迁移、侵袭性的影响.方法将携带hIL-24及绿色荧光蛋白的慢病毒载体（LV-hlL-24-GFP,KF-hIL-24组）及空载体（LV-GFP,KF-NC组）感染KF细胞,并设空白对照组（KF组）,应用实时定量PCR和Western blot分别检测hlL-24 mRNA及蛋白的表达;MTT法检测KF细胞增殖情况;流式细胞仪法测定KF细胞周期;划痕实验和Trans-well小室实验检测KF细胞的体外迁移和侵袭能力.结果 hIL-24慢病毒载体感染KF细胞96 h后,KF-hIL-24组hIL-24 mRNA和蛋白的表达量明显高于KF-NC组和KF组,差异有统计学意义（P ＜0.01）;MTT结果显示,KF-hIL-24组吸光度A值明显降低,与KF-NC组比较,差异有统计学意义（P＜0.05）;细胞周期结果显示, hIL-24基因阻滞KF细胞在G1期[（75.40±2.10）％]、S期[（4.96±1.60）％]和G2期[（0.01 ±0.01）％]细胞比例下降,与KF-NC组比较,差异有统计学意义（P＜0.01）;划痕实验和Trans-well实验结果显示,hIL-24慢病毒载体能够抑制KF细胞的体外迁移和侵袭能力.结论 hlL-24慢病毒载体能够抑制KF细胞增殖、细胞周期进程、迁移及侵袭能力.

关键词：人白细胞介素-24 瘢痕疙瘩成纤维细胞增殖迁移侵袭

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