资源类型

期刊论文 11

年份

2022 2

2021 3

2019 3

2015 2

2014 1

关键词

人造水通道 1

仿生膜 1

水通道蛋白 1

碳纳米管 1

细胞膜 1

展开 ︾

检索范围:

排序: 展示方式:

Mixed mode properties of CNT reinforced composites using Arcan test rig

Jacob MUTHU

《结构与土木工程前沿(英文)》 2015年 第9卷 第4期   页码 397-404 doi: 10.1007/s11709-015-0321-y

摘要: Composite materials reinforced with carbon nanotubes were mechanical tested using Arcan test rig under Mode-I, Mode-II and mixed mode loading conditions to obtain their fracture properties. The butterfly composite specimens were fabricated with 0.02, 0.05 and 0.1 wt % CNTs. The polyester/CNT composite was fabricated using VRTM (Vacuum Resin Transfer Molding) where the CNTs were first functionalised to reach an optimum properties. Arcan test rig was designed and fabricated to work with the Shimadzu testing machine. The results show that the functionalised CNTs have improved the fracture behavior by acting as bridge between the cracked face. In addition, the fracture properties were not improved for the higher weight fraction of 0.1 wt% CNTs.

关键词: CNT     composites     Arcan test rig     stress intensity factor    

Erratum to: Synthesis of hierarchical nanohybrid CNT@Ni-PS and its applications in enhancing the tribological

《化学科学与工程前沿(英文)》 2022年 第16卷 第10期   页码 1530-1530 doi: 10.1007/s11705-022-2240-5

Enhanced activation of peroxymonosulfate by CNT-TiO

Xuemin Hao, Guanlong Wang, Shuo Chen, Hongtao Yu, Xie Quan

《环境科学与工程前沿(英文)》 2019年 第13卷 第5期 doi: 10.1007/s11783-019-1161-0

摘要: CNT-TiO2 composite is used to activate PMS under UV-light assistance. Superior performance is due to the enhanced electron-transfer ability of CNT. SO4•−, •OH and 1O2 play key roles in the degradation of organic pollutants. In this work, a UV-light assisted peroxymonosulfate (PMS) activation system was constructed with the composite catalyst of multi-walled carbon nanotubes (CNT) - titanium dioxide (TiO2). Under the UV light irradiation, the photoinduced electrons generated from TiO2 could be continuously transferred to CNT for the activation of PMS to improve the catalytic performance of organic pollutant degradation. Meanwhile, the separation of photoinduced electron-hole pairs could enhance the photocatalysis efficiency. The electron spin resonance spectroscopy (EPR) and quenching experiments confirmed the generation of sulfate radical (SO4•−), hydroxyl radical (•OH) and singlet oxygen (1O2) in the UV/PMS/20%CNT-TiO2 system. Almost 100% phenol degradation was observed within 20 min UV-light irradiation. The kinetic reaction rate constant of the UV/PMS/20%CNT-TiO2 system (0.18 min−1) was 23.7 times higher than that of the PMS/Co3O4 system (0.0076 min−1). This higher catalytic performance was ascribed to the introduction of photoinduced electrons, which could enhance the activation of PMS by the transfer of electrons in the UV/PMS/CNT-TiO2 system.

关键词: Peroxymonosulfate activation     Carbon nanotubes     TiO2     Water treatment    

Comparison of CNT-PVA membrane and commercial polymeric membranes in treatment of emulsified oily wastewater

Gang Yi, Xinfei Fan, Xie Quan, Shuo Chen, Hongtao Yu

《环境科学与工程前沿(英文)》 2019年 第13卷 第2期 doi: 10.1007/s11783-019-1103-x

摘要:

CNT-PVA membrane was fabricated and compared with polymeric membranes.

The separation performance was evaluated by homemade and cutting fluid emulsions.

The three membranes show similar oil retention rates.

CNT-PVA membranes have higher permeation fluxes compared with polymeric membranes.

CNT-PVA membrane shows higher fouling resistance.

关键词: Oily wastewater     Microfiltration     Carbon nanotube membrane     Commercial polymeric membrane    

Synthesis of hierarchical nanohybrid CNT@Ni-PS and its applications in enhancing the tribological, curing

Jinian Yang, Yuxuan Xu, Chang Su, Shibin Nie, Zhenyu Li

《化学科学与工程前沿(英文)》 2021年 第15卷 第5期   页码 1281-1295 doi: 10.1007/s11705-020-2007-9

摘要: Poor interfacial adhesion and dispersity severely obstruct the continued development of carbon nanotube (CNT)-reinforced epoxy (EP) for potential applications. Herein, hierarchical CNT nanohybrids using nickel phyllosilicate (Ni-PS) as surface decorations (CNT@Ni-PS) were synthesized, and the nanocomposites derived from varied mass fractions of EP and CNT@Ni-PS were prepared. The morphological structures, tribological performances, curing behaviors and thermal properties of EP/CNT@Ni-PS nanocomposites were carefully investigated. Results show that hierarchical CNT nanohybrids with homogeneous dispersion and well-bonded interfacial adhesion in the matrix are successfully obtained, presenting significantly improved thermal and tribological properties. Moreover, analysis on cure kinetics proves the excellent promotion of CNT@Ni-PS on the non-isothermal curing process, lowering the curing energy barrier steadily.

关键词: nickel phyllosilicate     surface decoration     tribological property     curing kinetics     thermal performance    

Free vibration analysis of laminated FG-CNT reinforced composite beams using finite element method

T. VO-DUY, V. HO-HUU, T. NGUYEN-THOI

《结构与土木工程前沿(英文)》 2019年 第13卷 第2期   页码 324-336 doi: 10.1007/s11709-018-0466-6

摘要: In the present study, the free vibration of laminated functionally graded carbon nanotube reinforced composite beams is analyzed. The laminated beam is made of perfectly bonded carbon nanotubes reinforced composite (CNTRC) layers. In each layer, single-walled carbon nanotubes are assumed to be uniformly distributed (UD) or functionally graded (FG) distributed along the thickness direction. Effective material properties of the two-phase composites, a mixture of carbon nanotubes (CNTs) and an isotropic polymer, are calculated using the extended rule of mixture. The first-order shear deformation theory is used to formulate a governing equation for predicting free vibration of laminated functionally graded carbon nanotubes reinforced composite (FG-CNTRC) beams. The governing equation is solved by the finite element method with various boundary conditions. Several numerical tests are performed to investigate the influence of the CNTs volume fractions, CNTs distributions, CNTs orientation angles, boundary conditions, length-to-thickness ratios and the numbers of layers on the frequencies of the laminated FG-CNTRC beams. Moreover, a laminated composite beam combined by various distribution types of CNTs is also studied.

关键词: free vibration analysis     laminated FG-CNTRC beam     finite element method     first-order shear deformation theory     composite material    

The role of ions in plasma catalytic carbon nanotube growth: A review

Erik C. Neyts

《化学科学与工程前沿(英文)》 2015年 第9卷 第2期   页码 154-162 doi: 10.1007/s11705-015-1515-5

摘要: While it is well-known that the plasma-enhanced catalytic chemical vapor deposition (PECVD) of carbon nanotubes (CNTs) offers a number of advantages over thermal CVD, the influence of the various individual contributing factors is not well understood. Especially the role of ions is unclear, since ions in plasmas are generally associated with sputtering rather than with growing a material. Even so, various studies have demonstrated the beneficial effects of ion bombardment during the growth of CNTs. This review looks at the role of the ions in plasma-enhanced CNT growth as deduced from both experimental and simulation studies. Specific attention is paid to the beneficial effects of ion bombardment. Based on the available literature, it can be concluded that ions can be either beneficial or detrimental for carbon nanotube growth, depending on the exact conditions and the control over the growth process.

关键词: plasma-enhanced chemical vapor deposition (PECVD)     carbon nanotube (CNT)     ion bombardment     defect healing    

Experimental and DFT insights into nitrogen and sulfur co-doped carbon nanotubes for effective desulfurization of liquid phases: Equilibrium & kinetic study

《环境科学与工程前沿(英文)》 2021年 第15卷 第5期 doi: 10.1007/s11783-021-1397-3

摘要:

• Synthesis of NS-CNTS is used in a high desulfurization performance.

关键词: Dibenzothiophene (DBT)     Tertiary methyl mercaptan     Adsorption     Carbon nano tube (CNT)     Desulfurization     Doping    

水处理仿生膜研究进展

曾艳军,张林,陈欢林

《中国工程科学》 2014年 第16卷 第7期   页码 10-16

摘要:

本文首先介绍了细胞膜中磷脂双分子层与膜蛋白的结构以及水快速传输的机理。在此基础上分别对以膜蛋白、碳纳米管和人造有机纳米孔道为水通道的仿生膜研究进展进行了综述,着重阐述了以膜蛋白为水通道的仿生膜中两性嵌段共聚物基质的优点、规模化制备面临的问题;以碳纳米管为水通道的仿生膜中水快速传输的机理与膜的制备方法;以及人造有机纳米孔道的设计方法。最后提出了水处理仿生膜所面临的挑战,展望了仿生膜发展的前景。

关键词: 细胞膜     水通道蛋白     仿生膜     碳纳米管     人造水通道    

Theoretical and experimental study on the fluidity performance of hard-to-fluidize carbon nanotubes-based CO2 capture sorbents

《化学科学与工程前沿(英文)》 2022年 第16卷 第10期   页码 1460-1475 doi: 10.1007/s11705-022-2159-x

摘要: Carbon nanotubes-based materials have been identified as promising sorbents for efficient CO2 capture in fluidized beds, suffering from insufficient contact with CO2 for the high-level CO2 capture capacity. This study focuses on promoting the fluidizability of hard-to-fluidize pure and synthesized silica-coated amine-functionalized carbon nanotubes. The novel synthesized sorbent presents a superior sorption capacity of about 25 times higher than pure carbon nanotubes during 5 consecutive adsorption/regeneration cycles. The low-cost fluidizable-SiO2 nanoparticles are used as assistant material to improve the fluidity of carbon nanotubes-based sorbents. Results reveal that a minimum amount of 7.5 and 5 wt% SiO2 nanoparticles are required to achieve an agglomerate particulate fluidization behavior for pure and synthesized carbon nanotubes, respectively. Pure carbon nanotubes + 7.5 wt% SiO2 and synthesized carbon nanotubes + 5 wt% SiO2 indicates an agglomerate particulate fluidization characteristic, including the high-level bed expansion ratio, low minimum fluidization velocity (1.5 and 1.6 cm·s–1), high Richardson−Zakin index (5.2 and 5.3 > 5), and low Π value (83.2 and 84.8 < 100, respectively). Chemical modification of carbon nanotubes causes not only enhanced CO 2 uptake capacity but also decreases the required amount of silica additive to reach a homogeneous fluidization behavior for synthesized carbon nanotubes sorbent.

关键词: CO2 capture     CNT-based sorbents     fluidization     SiO2 nanoparticles     fluidized bed reactors    

High-performance supercapacitors based on Ni

Yunrui Tian, Haishun Du, Shatila Sarwar, Wenjie Dong, Yayun Zheng, Shumin Wang, Qingping Guo, Jujie Luo, Xinyu Zhang

《化学科学与工程前沿(英文)》 2021年 第15卷 第4期   页码 1021-1032 doi: 10.1007/s11705-020-2006-x

摘要: We present a one-step route for the preparation of nickel phosphide/carbon nanotube (Ni P@CNT) nanocomposites for supercapacitor applications using a facile, ultrafast (90 s) microwave-based approach. Ni P nanoparticles could grow uniformly on the surface of CNTs under the optimized reaction conditions, namely, a feeding ratio of 30:50:25 for CNT, Ni(NO ) ·6H O, and red phosphorus and a microwave power of 1000 W for 90 s. Our study demonstrated that the single-step microwave synthesis process for creating metal phosphide nanoparticles was faster and simpler than all the other existing methods. Electrochemical results showed that the specific capacitance of the optimal Ni P@CNT-nanocomposite electrode displayed a high specific capacitance of 854 F·g at 1 A·g and a superior capacitance retention of 84% after 5000 cycles at 10 A·g . Finally, an asymmetric supercapacitor was assembled using the nanocomposite with activated carbon as one electrode (Ni P@CNT//AC), which showed a remarkable energy density of 33.5 W·h·kg and a power density of 387.5 W·kg . This work will pave the way for the microwave synthesis of other transition metal phosphide materials for use in energy storage systems.

关键词: Ni2P     CNT     supercapacitors     nanocomposites     microwave    

标题 作者 时间 类型 操作

Mixed mode properties of CNT reinforced composites using Arcan test rig

Jacob MUTHU

期刊论文

Erratum to: Synthesis of hierarchical nanohybrid CNT@Ni-PS and its applications in enhancing the tribological

期刊论文

Enhanced activation of peroxymonosulfate by CNT-TiO

Xuemin Hao, Guanlong Wang, Shuo Chen, Hongtao Yu, Xie Quan

期刊论文

Comparison of CNT-PVA membrane and commercial polymeric membranes in treatment of emulsified oily wastewater

Gang Yi, Xinfei Fan, Xie Quan, Shuo Chen, Hongtao Yu

期刊论文

Synthesis of hierarchical nanohybrid CNT@Ni-PS and its applications in enhancing the tribological, curing

Jinian Yang, Yuxuan Xu, Chang Su, Shibin Nie, Zhenyu Li

期刊论文

Free vibration analysis of laminated FG-CNT reinforced composite beams using finite element method

T. VO-DUY, V. HO-HUU, T. NGUYEN-THOI

期刊论文

The role of ions in plasma catalytic carbon nanotube growth: A review

Erik C. Neyts

期刊论文

Experimental and DFT insights into nitrogen and sulfur co-doped carbon nanotubes for effective desulfurization of liquid phases: Equilibrium & kinetic study

期刊论文

水处理仿生膜研究进展

曾艳军,张林,陈欢林

期刊论文

Theoretical and experimental study on the fluidity performance of hard-to-fluidize carbon nanotubes-based CO2 capture sorbents

期刊论文

High-performance supercapacitors based on Ni

Yunrui Tian, Haishun Du, Shatila Sarwar, Wenjie Dong, Yayun Zheng, Shumin Wang, Qingping Guo, Jujie Luo, Xinyu Zhang

期刊论文