نتایج جستجو برای: proton conductive membranes

تعداد نتایج: 174809  

2011
Wil N. Konings Sonja M. Koning

The cytoplasmic membranes of Bacteria and Archaea determine to a large extent the composition of the cytoplasm. Since the ion and, in particular, the proton and/or the sodium ion electrochemical gradients across the membranes are crucial for the bioenergetic conditions of these microorganisms, strategies are needed to restrict the permeation of these ions across their cytoplasmic membranes. The...

Journal: :Advanced Functional Materials 2023

Selective Proton Transport In article number 2215109, Tongwen Xu, Liang Ge, Xingya Li, and co-workers report a series of dibenzo-18-crown-6 functionalized sulfonated poly(biphenyl alkylene) membranes. The membranes possess synergistic hydrophilic networks induced by bi-functional sites (crown ether sulfonic-acid group), increasing selective proton transport, providing efficient acid recovery in...

Journal: :Journal of materials chemistry. A, Materials for energy and sustainability 2023

Radical-induced degradation of proton exchange membranes limits the durability proton-exchange membrane fuel cells. Cerium is widely used as a radical scavenger, but migration cerium ions to the...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2010
Tor Sandén Lina Salomonsson Peter Brzezinski Jerker Widengren

Proton-transfer reactions across and at the surface of biological membranes are central for maintaining the transmembrane proton electrochemical gradients involved in cellular energy conversion. In this study, fluorescence correlation spectroscopy was used to measure the local protonation and deprotonation rates of single pH-sensitive fluorophores conjugated to liposome membranes, and the depen...

Journal: :Science China. Materials 2021

Smart proton conductive metal-organic framework (MOF) membranes with dynamic remote control over conduction show high potential for use in advanced applications, such as sensors and bioprocesses. Here, we report a photoswitchable ZIF-8 membrane by coencapsulating polystyrene sulfonate graphene quantum dots into matrix (GQDs-PSS@ZIF-8) via solid-confined conversion process. The conductivity of t...

2014
Nedal Abu-Thabit Rafil Basheer

There is a crucial need for the development of inexpensive technologies for water sterilization enabling access to safe drinking water for more than one billion people in the developing countries. Water sterilization can be attained by chemical, electrochemical or electrical means. Electrical methods for water sterilization are considered environmental friendly because they use ‘‘electrons’’ as...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید