Results 31 to 40 of about 893 (175)

Composite Membranes of Sulfonated Poly(ether ether ketone) with Active Carbon: Composite Preparation and Investigation of their Properties for Potential Application for CO2 Electrochemical Reduction

Medžiagotyra, 2020
In this study, synthesis of sulfonated poly(ether ether ketone) (SPEEK) was performed using sulfonation method with concentrated sulfuric acid. Polymer with three degrees of sulfonation was obtained: 0.87; 0.82 and 0.74.
Deniss FEDORENKO, Guntars VAIVARS
doaj   +1 more source

Sulfonation degree effect on ion-conducting SPEEK-titanium oxide membranes properties

Polímeros, 2017
Polymeric membranes were developed using a SPEEK (sulfonated poly(ether ether ketone)) polymer matrix, containing titanium oxide (TiO2) (incorporated by sol-gel method). SPEEK with different sulfonation degrees (SD): 63% and 50% were used.
Jacqueline Costa Marrero, Ailton de Souza Gomes, Wang Shu Hui, José Carlos Dutra Filho, Vivianna Silva de Oliveira   +4 more
doaj   +1 more source

Polydopamine grafting polyether ether ketone to stabilize growth factor for efficient osteonecrosis repair

Scientific Reports
This study examines the biocompatibility, osteogenic potential, and effectiveness of polyether ether ketone (PEEK) composites for treating osteonecrosis, seeking to establish a theoretical basis for clinical application.
Yi Sun, Jingyun Liu, Kaijia Chen, Nannan Zhong, Chengpeng He, Xinming Luan, Xiaobei Zang, Jianbo Sun, Ning Cao, Wenbo Wang, Qiang Ren   +10 more
doaj   +1 more source

Sustainable fabrication of solvent-free cation exchange membrane via tuning sulfonation time of PEEK

Desalination and Water Treatment
Researchers have been looking at novel strategies to lessen the environmental effect of various industrial processes in recent years due to the growing concern over environmental sustainability on a worldwide scale. The creation of eco-friendly materials
Muhammad Farman, Farhat Yasmeen, Muhammad Aamir Shehzad, Hafiz Muhammad Raoof Amin, Muhammad Farhan   +4 more
doaj   +1 more source

Graphene Materials for Sustainable Energy Applications: A Contemporary Perspective

Carbon Energy, EarlyView.
ABSTRACT Graphene has garnered significant attention as a promising material with great potential for contributing to sustainable energy initiatives, such as RE100 (100% renewable energy initiative) and CF100 (100% carbon‐free initiative). This review aims to explore the potential of graphene for advancing renewable energy applications by highlighting
Niraj Kumar, Seul‐Yi Lee, Roop L. Mahajan, Soo‐Jin Park   +3 more
wiley   +1 more source

Improvement of COD removal and electricity generation in a MFC through embedding sulfonated reduced graphene oxide in a SPEEK proton exchange membrane [PDF]

Journal of Applied Research in Water and Wastewater
Graphene oxide has attracted many interests in the recent decade due to its unique mechanical and chemical properties. This study focuses on the modification of graphene oxide and preparation proton exchange membrane (PEM) by sulfonated poly ether ether ...
Nasim Saniei, Nahid Ghasemi, Ali Akbar Zinatizadeh, Sirus Zinadini, Majid Ramezani   +4 more
doaj   +1 more source

Advances in Sustainable Production of Bio‐Derived 5‐Alkoxymethylfurfural and Levulinate Esters: A Comprehensive Review

Carbon Energy, EarlyView.
The present review discusses the advancement in the catalytic synthesis of 5‐alkoxymethylfurfural (AMF) and levulinate esters (LEs) from the aspects of catalytic systems, reaction mechanisms, product isolation, and techno‐economic analysis, supplying valuable insights toward future sustainable and efficient manufacture of AMF and LEs. ABSTRACT The huge
Jun Zhang, Chunxiang Yang, Yuhe Liao, Jiawei Wang, Chengyu Li, Rui Shan, Haoran Yuan   +6 more
wiley   +1 more source

Applications of Biomaterials in Separators for Secondary Batteries

Carbon Energy, EarlyView.
In this review, biomaterial‐based separators are reviewed as sustainable alternatives to conventional polyolefin‐based separators. For 12 different natural polymers, spanning from Protista, Plantae, and Animalia, viable strategies for synthesizing biomass‐based separators are described.
Jongyoung Choi, Sung Cik Mun, Yong‐Seok Choi, Jong Ho Won   +3 more
wiley   +1 more source

Ion Selectivity and Stability Enhancement of SPEEK/Lignin Membrane for Vanadium Redox Flow Battery: The Degree of Sulfonation Effect

Frontiers in Chemistry, 2018
A membrane of high ion selectivity, high stability, and low cost is desirable for vanadium redox flow battery (VRB). In this study, a composite membrane is formed by blending the sulfonated poly (ether ether ketone) with lignin (SPEEK/lignin), and ...
Jiaye Ye, Jiaye Ye, Xuechun Lou, Chun Wu, Sujuan Wu, Mei Ding, Mei Ding, Lidong Sun, Lidong Sun, Chuankun Jia, Chuankun Jia   +10 more
doaj   +1 more source

Stretchable and energy‐efficient neuromorphic devices based on ionic capacitance for robotic tactile recognition

FlexMat, EarlyView.
Abstract Neuromorphic devices with learning and memory functions are critical for enabling human‐like tactile perception and interactive control in humanoid robots. However, existing neuromorphic platforms often struggle to reconcile mechanical flexibility with energy efficiency due to material and mechanism constraints.
Xinyu Li, Kang Chen, Xiangling Xia, Quanxing Yao, Yi Du, Zidong He, Xuewu Lin, Minghua Tang, Runsheng Gao, Xiaojian Zhu, Run‐Wei Li   +10 more
wiley   +1 more source