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期刊论文 6

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2023 2

2021 2

2018 2

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三氯生 1

抗菌 1

绿色化学 1

聚丙烯支架 1

聚多巴胺 1

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Novel polyethyleneimine/TMC-based nanofiltration membrane prepared on a polydopamine coated substrate

Zhe Yang, Xiaoyu Huang, Jianqiang Wang, Chuyang Y. Tang

《化学科学与工程前沿（英文）》 2018年 第12卷 第2期   页码 273-282 doi: 10.1007/s11705-017-1695-2

摘要： Most commercial NF membranes are negatively charged at the pH range of a typical feed solution. In order to enhance the removal of cations (such as Mg or Ca ), we utilized polyethyleneimine (PEI) and trimesoyl chloride (TMC) to perform interfacial polymerization reaction on a polydopamine coated hydrolyzed polyacrylonitrile substrate to obtain a positively charged nanofiltration membrane. Effects of polydopamine coating time, PEI concentration, TMC reaction time and concentration on the membrane physicochemical properties and separation performance were systematically investigated using scanning electron microscopy, streaming potential and water contact angle measurements. The optimal NF membrane showed high rejection for divalent ions (93.6±2.6% for MgSO , 92.4±1.3% for MgCl , and 90.4±2.1% for Na SO ), accompanied with NaCl rejection of 27.8±2.5% with a permeation flux of 17.2±2.8 L·m ·h at an applied pressure of 8 bar (salt concentrations were all 1000 mg·L ). The synthesized membranes showed promising potentials for the applications of water softening.

关键词： nanofiltration     polyethyleneimine     trimesoyl chloride     polydopamine     positively charged rejection layer    

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Reductant-assisted polydopamine-modified membranes for efficient water purification

Feng Sun, Jinren Lu, Yuhong Wang, Jie Xiong, Congjie Gao, Jia Xu

《化学科学与工程前沿（英文）》 2021年 第15卷 第1期   页码 109-117 doi: 10.1007/s11705-020-1987-9

摘要： Surface engineering with polydopamine coatings has been considered a promising surface functionalisation tool. However, it is difficult to control the self-polymerisation for polydopamine formation, which usually causes severe interparticle aggregation. In this study, polydopamine self-polymerisation was controlled by adjusting its reducing environment using a reductant (NaBH ) to fabricate mixed cellulose ester (MCE)/polydopamine membranes. An oxidising environment using NaIO was additionally tested as the control. The results showed that a thin polydopamine coating with small polydopamine particles was formed on the skeleton frameworks of the MCE membrane with NaBH , and the self-polymerisation rate was suppressed. The polydopamine coating formed in the reducing environment facilitated excellent water transport performance with a water permeance of approximately 400 L·m ·h ·bar as well as efficient organic foulant removal with a bovine serum albumin rejection of approximately 90%. In addition, the polydopamine coating with NaBH exhibited both excellent chemical stability and anti-microbial activity, demonstrating the contribution of the reducing environment to the performance of the MCE/polydopamine membranes. It shows significant potential for use in water purification.

关键词： membrane     water purification     polydopamine     reducing environment     self-polymerization control    

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Size-controllable synthesis of monodispersed nitrogen-doped carbon nanospheres from polydopamine for

《化学科学与工程前沿（英文）》 2023年 第17卷 第11期   页码 1788-1800 doi: 10.1007/s11705-023-2326-8

摘要： Monodispersed nitrogen-doped carbon nanospheres with tunable particle size (100–230 nm) were synthesized via self-polymerization of biochemical dopamine in the presence of hexamethylenetetramine as a buffer and F127 as a size controlling agent. Hexamethylenetetramine can mildly release NH3, which in turn initiates the polymerization reaction of dopamine. The carbon nanospheres obtained exhibited a significant energy storage capability of 265 F·g–1 at 0.5 A·g–1 and high-rate performance of 82% in 6 mol·L–1 KOH (20 A·g–1), which could be attributed to the presence of abundant micro-mesoporous structure, doped nitrogen functional groups and the small particle size. Moreover, the fabricated symmetric supercapacitor device displayed a high stability of 94% after 5000 cycles, revealing the considerable potential of carbon nanospheres as electrode materials for energy storage.

关键词： carbon nanospheres     size-controlled     nitrogen-doped     high-rate     supercapacitors    

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Immobilization of NZVI in polydopamine surface-modified biochar for adsorption and degradation of tetracycline

Xiangyu Wang, Weitao Lian, Xin Sun, Jun Ma, Ping Ning

《环境科学与工程前沿（英文）》 2018年 第12卷 第4期 doi: 10.1007/s11783-018-1066-3

摘要：

Novel method for polydopamine (PDA) modified biochar (BC) with immobilized NZVI.

PDA/NZVI@BC exhibits significantly enhanced activity for tetracycline (TC) removal.

TC removal efficiency was increased by 55.9% compared with that of pristine NZVI.

The mechanism of tetracycline removal by PDA/NZVI@BC was proposed.

关键词： Biochar     Polydopamine     NZVI     Modification     Tetracycline    

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Immobilization of laccase on organic–inorganic nanocomposites and its application in the removal of phenolic pollutants

《化学科学与工程前沿（英文）》 2023年 第17卷 第7期   页码 867-879 doi: 10.1007/s11705-022-2277-5

摘要： Polydopamine-functionalized nanosilica was synthesized using an inexpensive and easily obtainable raw material, mild reaction conditions, and simple operation. Subsequently, a flexible spacer arm was introduced by using dialdehyde starch as a cross-linking agent to bind with laccase. A high loading amount (77.8 mg∙g‒1) and activity retention (75.5%) could be achieved under the optimum immobilization conditions. Thermodynamic parameters showed that the immobilized laccase had a lower thermal deactivation rate constant and longer half-life. The enhancement of thermodynamic parameters indicated that the immobilized laccase had better thermal stability than free laccase. The residual activity of immobilized laccase remained at about 50.0% after 30 days, which was 4.0 times that of free laccase. Immobilized laccase demonstrated excellent removal of phenolic pollutants (2,4-dichlorophenol, bisphenol A, phenol, and 4-chlorophenol) and perfect reusability with 70% removal efficiency retention for 2,4-dichlorophenol after seven cycles. These results suggested that immobilized laccase possessed great reusability, improved thermal stability, and excellent storage stability. Organic–inorganic nanomaterials have a good application prospect for laccase immobilization, and the immobilized laccase of this work may provide a practical application for the removal of phenolic pollutants.

关键词： polydopamine     pollutant removal     thermodynamic     phenolic pollutants     immobilized laccase    

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一步法绿色制备具有持续抗菌性能的医用支架 Article

黄榕康, 胡民辉, 梁伟文, 郑娟娟, 杜杨, 林燕欢, 王怀明, 过文泰, 曾展涛, 李创坤, 利民, 王辉, 张兴才

《工程（英文）》 2021年 第7卷 第3期   页码 326-333 doi: 10.1016/j.eng.2020.08.022

摘要：

聚丙烯（polypropylene, PP）支架是目前最常用的生物医用支架，在外科手术使用中存在黏连、感染、异物反应等缺点。本文报道了一种简易一步法，用于制备新型三氯生聚多巴胺聚丙烯（TPP）复合支架，从而有效地提高了PP支架的生物相容性和持续抗菌性。通过一步法绿色制造，具有广谱抗菌效果的三氯生在聚多巴胺形成过程中，在PP支架表面可以有效地与多巴胺发生相互作用。三氯生可从具有生物相容性的聚多巴胺表面涂层持续释放。利用三氯生（浓度为8 mg∙mL−1，即TPP-8）制备的5 mm × 5 mm的支架具备持续抗菌性，对最大菌液量为2 mL的大肠杆菌（E. coli）和5 mL的金黄色葡萄球菌（S. aureus）的持续抗菌时间超过15 d。本研究为长效抗菌医用生物材料的绿色制备提供了一个新的方向。

关键词： 绿色化学     聚丙烯支架     聚多巴胺     三氯生     抗菌    

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标题 作者 时间 类型 操作

Novel polyethyleneimine/TMC-based nanofiltration membrane prepared on a polydopamine coated substrate

Zhe Yang, Xiaoyu Huang, Jianqiang Wang, Chuyang Y. Tang

期刊论文

Reductant-assisted polydopamine-modified membranes for efficient water purification

Feng Sun, Jinren Lu, Yuhong Wang, Jie Xiong, Congjie Gao, Jia Xu

期刊论文

Size-controllable synthesis of monodispersed nitrogen-doped carbon nanospheres from polydopamine for

期刊论文

Immobilization of NZVI in polydopamine surface-modified biochar for adsorption and degradation of tetracycline

Xiangyu Wang, Weitao Lian, Xin Sun, Jun Ma, Ping Ning

期刊论文

Immobilization of laccase on organic–inorganic nanocomposites and its application in the removal of phenolic pollutants

期刊论文

一步法绿色制备具有持续抗菌性能的医用支架

黄榕康, 胡民辉, 梁伟文, 郑娟娟, 杜杨, 林燕欢, 王怀明, 过文泰, 曾展涛, 李创坤, 利民, 王辉, 张兴才

期刊论文