Results 61 to 70 of about 1,079,710 (313)

Short Communication: Electrochemical Detection of Dissolved Oxygen in Water using a Composite of Graphene oxide and Platinum Nanoparticles

International Journal of Electrochemical Science, 2015
In the present study, we report the electrochemical detection of dissolved oxygen in neutral media using graphene oxide-platinum nanoparticles (GO-PtNPs) composite modified glassy carbon electrode (GCE).
Duo-Han Zhao, Selvakumar Palanisamy, Shen-Ming Chen   +2 more
doaj   +1 more source

Investigation of the Effect of Hydrophilicity on Oxygen Reduction Reaction Property with Measurement of Water Vapor Specific Surface Area

Electrochemistry, 2021
For oxygen reduction reaction of an air battery which uses oxygen and water as reactants, it is important to control not only gas diffusivity but also hydrophilicity. In this study, the effect of hydrophilicity was investigated quantitatively.
Satoko TAKASE, Ayumi KIMOTO, Masaki KUSUNOKI, Youichi SHIMIZU   +3 more
doaj   +1 more source

Cell geometry and membrane protein crowding constrain Escherichia coli growth rate, overflow metabolism, respiration, and maintenance energy

FEBS Letters, EarlyView.
The physical dimensions and shape of bacterial cells define the surface area available to acquire nutrients and the volume available for synthesizing proteins and DNA. Here, we use computational systems biology to decode the importance of cell geometry as a major determinant of prokaryotic phenotype, including growth rate and metabolic efficiency. This
Ross P. Carlson, Tomáš Gedeon, Mauricio Garcia Benitez, Campbell Putnam, William R. Harcombe, Radhakrishnan Mahadevan, Ashley E. Beck   +6 more
wiley   +1 more source

Applications of RDE and RRDE methods in oxygen reduction reaction

, 2014
This chapter reviews the applications of rotating disk electrode (RDE) and Rotating ring-disk electrode (RRDE) techniques in Oxygen reduction reaction (ORR) research and its associated catalyst evaluation.
Shen, Tiantian, Tiantian Shen, Yin, Geping, Sun, Yongrong, Du, Chungyu, Zhang, Jiujun, Chunyu Du, Yongrong Sun, Jiujun Zhang, Geping Yin   +9 more
core   +1 more source

Electron transfer between complexes III and IV in S. cerevisiae mitochondrial membranes

FEBS Letters, EarlyView.
Mitochondrial oxidative phosphorylation in S. cerevisiae mitoplasts is limited by complex IV catalytic capacity, rather than two‐dimensional cytochrome c diffusion. At physiological cytochrome c : supercomplex ratios at salinity equivalent to that of 20 mm monovalent salt, activity is maximized, indicating that this low ionic strength accurately mimics
Ana Paula Lobez, Mikael Oliveberg, Peter Brzezinski   +2 more
wiley   +1 more source

Reaproveitamento de óxidos de manganês de pilhas descartadas para eletrocatálise da reação de redução de oxigênio em meio básico Use of manganese oxides recovered from spent batteries in electrocatalysis of oxygen reduction reaction in alkaline medium

Química Nova, 2010
The oxygen reduction reaction was studied in alkaline media using manganese oxides obtained from spent batteries as electrocatalysts. Three processes were used to recover manganese oxides from spent batteries.
Daniel C. Rascio, Rodrigo F. B. De Souza, Érico Teixeira Neto, Hugo B. Suffredini, Mauro C. Santos, Marcelo L. Calegaro   +5 more
doaj   +1 more source

Chirality enhances oxygen reduction [PDF]

, 2021
Abstract Controlled reduction of oxygen is important for developing clean energy technologies, such as fuel cells, and is vital to the existence of aerobic organisms. The process starts with oxygen in a triplet ground state and ends with products that are all in singlet states. Hence, spin constraints in the oxygen reduction must be considered.
Yutao Sang, Francesco Tassinari, Kakali Santra, Wenyan Zhang, David Waldeck, Jonas Fransson, Ron Naaman   +6 more
openaire   +1 more source

Rotating electrode methods and oxygen reduction electrocatalysts

, 2014
Rotating disk electrode (RDE) and rotating ring-disk electrode (RRDE) techniques are one kind of the important and commonly used methods in electrochemical science and technology, particularly, in the fundamental understanding of electrochemical ...
Yin, Geping, Xing, Wei, Zhang, Jiujun, Wei Xing, Jiujun Zhang, Geping Yin   +5 more
core   +1 more source

Microbiome−host proteostasis crosstalk—An emerging perspective on mechanisms and interventions toward healthy longevity

FEBS Letters, EarlyView.
Proteostasis and the gut microbiota play a key role in shaping host physiology. Microbiota‐derived metabolites, vitamins, and RNA modulate host proteostasis. Findings from model systems, including C. elegans, indicate microbes can either stabilize or disrupt host proteostasis.
Abhishek Anil Dubey, Maria Ermolaeva
wiley   +1 more source

Oxide cathodes for sodium‐ion batteries: Designs, challenges, and perspectives

Carbon Energy, 2022
Sodium‐ion batteries (SIBs), which are an alternative to lithium‐ion batteries (LIBs), have attracted increasing attention due to their low cost of Na resources and similar Na storage mechanism to LIBs. Compared with anode materials and electrolytes, the
Tao Chen, Baixue Ouyang, Xiaowen Fan, Weili Zhou, Weifang Liu, Kaiyu Liu   +5 more
doaj   +1 more source