scholarly journals Capacitive Organic Dye Removal by Block Copolymer Based Porous Carbon Fibers

2020 ◽  
Vol 7 (16) ◽  
pp. 2000507
Author(s):  
Joel Marcos Serrano ◽  
Assad U. Khan ◽  
Tianyu Liu ◽  
Zhen Xu ◽  
Alan R. Esker ◽  
...  
Keyword(s):  
Block Copolymer ◽  
Carbon Fibers ◽  
Porous Carbon ◽  
Dye Removal ◽  
Organic Dye

Enhanced Mechanical Properties of Natural Rubber by Block Copolymer-Based Porous Carbon Fibers

2021 ◽  
Author(s):  
Wenqi Zhao ◽  
Zhen Xu ◽  
John Elliott ◽  
Cindy S. Barrera ◽  
Zacary L. Croft ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Block Copolymer ◽  
Natural Rubber ◽  
Carbon Fibers ◽  
Porous Carbon

Controlling the physical and electrochemical properties of block copolymer-based porous carbon fibers by pyrolysis temperature

2020 ◽  
Vol 5 (1) ◽  
pp. 153-165 ◽  
Author(s):  
Zhengping Zhou ◽  
Tianyu Liu ◽  
Assad U. Khan ◽  
Guoliang Liu
Keyword(s):  
Block Copolymer ◽  
Electrochemical Properties ◽  
Carbon Fibers ◽  
Porous Carbon ◽  
Pyrolysis Temperature ◽  
Processing Parameter ◽  
Important Processing

Pyrolysis temperature is an important processing parameter that determines the physical and electrochemical properties of block copolymer-based porous carbon fibers.

scholarly journals Block copolymer–based porous carbon fibers

2019 ◽  
Vol 5 (2) ◽  
pp. eaau6852 ◽  
Author(s):  
Zhengping Zhou ◽  
Tianyu Liu ◽  
Assad U. Khan ◽  
Guoliang Liu
Keyword(s):  
Activated Carbon ◽  
Block Copolymer ◽  
Carbon Fibers ◽  
Porous Carbon ◽  
Microphase Separation ◽  
High Surface ◽  
Electrochemical Energy Storage ◽  
Interconnected Network ◽  
Surface Areas ◽  
Poly Acrylonitrile

Carbon fibers have high surface areas and rich functionalities for interacting with ions, molecules, and particles. However, the control over their porosity remains challenging. Conventional syntheses rely on blending polyacrylonitrile with sacrificial additives, which macrophase-separate and result in poorly controlled pores after pyrolysis. Here, we use block copolymer microphase separation, a fundamentally disparate approach to synthesizing porous carbon fibers (PCFs) with well-controlled mesopores (~10 nm) and micropores (~0.5 nm). Without infiltrating any carbon precursors or dopants, poly(acrylonitrile-block-methyl methacrylate) is directly converted to nitrogen and oxygen dual-doped PCFs. Owing to the interconnected network and the highly optimal bimodal pores, PCFs exhibit substantially reduced ion transport resistance and an ultrahigh capacitance of 66 μF cm−2 (6.6 times that of activated carbon). The approach of using block copolymer precursors revolutionizes the synthesis of PCFs. The advanced electrochemical properties signify that PCFs represent a new platform material for electrochemical energy storage.

scholarly journals Exceptional capacitive deionization rate and capacity by block copolymer–based porous carbon fibers

2020 ◽  
Vol 6 (16) ◽  
pp. eaaz0906 ◽  
Author(s):  
Tianyu Liu ◽  
Joel Serrano ◽  
John Elliott ◽  
Xiaozhou Yang ◽  
William Cathcart ◽  
...  
Keyword(s):  
Block Copolymer ◽  
Ion Transport ◽  
Carbon Fibers ◽  
Porous Carbon ◽  
High Capacity ◽  
Accessible Surface Area ◽  
High Rate ◽  
Capacitive Deionization ◽  
Porous Network ◽  
Hierarchical Porous

Capacitive deionization (CDI) is energetically favorable for desalinating low-salinity water. The bottlenecks of current carbon-based CDI materials are their limited desalination capacities and time-consuming cycles, caused by insufficient ion-accessible surfaces and retarded electron/ion transport. Here, we demonstrate porous carbon fibers (PCFs) derived from microphase-separated poly(methyl methacrylate)-block-polyacrylonitrile (PMMA-b-PAN) as an effective CDI material. PCF has abundant and uniform mesopores that are interconnected with micropores. This hierarchical porous structure renders PCF a large ion-accessible surface area and a high desalination capacity. In addition, the continuous carbon fibers and interconnected porous network enable fast electron/ion transport, and hence a high desalination rate. PCF shows desalination capacity of 30 mgNaCl g−1PCF and maximal time-average desalination rate of 38.0 mgNaCl g−1PCF min−1, which are about 3 and 40 times, respectively, those of typical porous carbons. Our work underlines the promise of block copolymer–based PCF for mutually high-capacity and high-rate CDI.

Cu–organic framework-derived V-doped carbon nanostructures for organic dye removal

2021 ◽  
Author(s):  
Xiao-Sa Zhang ◽  
Hong-Tian Zhao ◽  
Yu Liu ◽  
Wenze Li ◽  
Ai-Ai Yang ◽  
...  
Keyword(s):  
Porous Carbon ◽  
Carbon Nanostructures ◽  
Dye Removal ◽  
Metal Organic Frameworks ◽  
Functional Materials ◽  
Organic Dye ◽  
Hierarchical Porous Carbon ◽  
Sacrificial Template ◽  
Hierarchical Porous ◽  
Metal Organic

Metal–organic frameworks (MOFs) have recently emerged as a type of uniformly and periodically atom-distributed precursor and efficient self-sacrificial template to fabricate hierarchical porous-carbon-related nanostructured functional materials. In this work, we...

Radar Absorbing Properties of Light Radar Absorbing Materials Based on Hollow-porous Carbon Fibers

2009 ◽  
Vol 24 (2) ◽  
pp. 320-324 ◽  
Author(s):  
Wei XIE ◽  
Hai-Feng CHENG ◽  
Zeng-Yong CHU ◽  
Zhao-Hui CHEN ◽  
Yong-Jiang ZHOU
Keyword(s):  
Carbon Fibers ◽  
Porous Carbon ◽  
Absorbing Materials

Yolk-shell Fe3O4@MOF-5 nanocomposites as a heterogeneous Fenton-like catalyst for organic dye removal

2021 ◽  
pp. 118620
Author(s):  
Rui-Xia Yang ◽  
Qiao-Hong Peng ◽  
Bing Yu ◽  
You-Qing Shen ◽  
Hai-Lin Cong
Keyword(s):  
Dye Removal ◽  
Organic Dye ◽  
Heterogeneous Fenton

scholarly journals Conversion of industrial carpet waste into adsorbent materials for organic dye removal from water

2021 ◽  
pp. 100150
Author(s):  
Kasidit Janbooranapinij ◽  
Arinchai Yimponpipatpol ◽  
Narueporn Ngamthanacom ◽  
Gasidit Panomsuwan
Keyword(s):  
Dye Removal ◽  
Organic Dye ◽  
Carpet Waste ◽  
Adsorbent Materials

Conducting polymer composite aerogel with magnetic properties for organic dye removal

2020 ◽  
Vol 260 ◽  
pp. 116266 ◽  
Author(s):  
Patrycja Bober ◽  
Islam M. Minisy ◽  
Udit Acharya ◽  
Jiří Pfleger ◽  
Vladimir Babayan ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Conducting Polymer ◽  
Polymer Composite ◽  
Dye Removal ◽  
Organic Dye ◽  
Composite Aerogel
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