Results 61 to 70 of about 212,515 (313)

Electroactive Metal–Organic Frameworks for Electrocatalysis

Advanced Functional Materials, EarlyView.
Electrocatalysis is crucial in sustainable energy conversion as it enables efficient chemical transformations. The review discusses how metal–organic frameworks can revolutionize this field by offering tailorable structures and active site tunability, enabling efficient and selective electrocatalytic processes.
Irena Senkovska, Yutong Luo, Ruyan Zhao, Jianjun Zhang, Mingchao Wang, Xinliang Feng, Eike Brunner, Stefan Kaskel   +7 more
wiley   +1 more source

Archaeal dominated ammonia-oxidizing communities in Icelandic grassland soils are moderately affected by long-term N fertilization and geothermal heating

Frontiers in Microbiology, 2012
The contribution of ammonia-oxidizing bacteria and archaea (AOB and AOA, respectively) to the net oxidation of ammonia varies greatly between terrestrial environments.
Anne eDaebeler, Anne eDaebeler, Guy C.J. Abell, Paul L.E. Bodelier, Levente eBodrossy, Dion M.F. Frampton, Mariet M. Hefting, Hendrikus J. Laanbroek, Hendrikus J. Laanbroek   +8 more
doaj   +1 more source

A mathematical model of bacteria capable of complete oxidation of ammonium predicts improved nitrogen removal and reduced production of nitrous oxide [PDF]

, 2017
The removal of excess nutrients from water ecosystems requires oxidation of toxic ammonium by two types of bacteria; one oxidizes ammonium to nitrite and the other oxidizes nitrite to nitrate.
Ebenhöh, Oliver, Pokhilko, Alexandra
core  

Oxidation of Ammonia with Molecular Complexes

Journal of the American Chemical Society, 2020
Oxidation of ammonia by molecular complexes is a burgeoning area of research, with critical scientific challenges that must be addressed. A fundamental understanding of individual reaction steps is needed, particularly for cleavage of N-H bonds and formation of N-N bonds.
Peter L. Dunn, Brian J. Cook, Samantha I. Johnson, Aaron M. Appel, R. Morris Bullock   +4 more
openaire   +3 more sources

Auto‐Generated Valence States in Electrocatalysts for Boosting Oxygen and Hydrogen Evolution Kinetics in Alkaline Water/Alkaline Seawater/Simulated Seawater/Natural Seawater

Advanced Functional Materials, EarlyView.
This review systematically highlights the latest achievements in mixed‐valence states relevant to hydrogen and oxygen evolution reactions, providing essential insights into future directions and methods for large‐scale practical implementation. This critical review is expected to provide an overview of recent advancements in diverse valence‐state metal
Jitendra N. Tiwari, Gokul Bhaskaran, Krishan Kumar, Yun Suk Huh, Young‐Kyu Han   +4 more
wiley   +1 more source

Structural insights into the catalytic mechanism of ammonia monooxygenase

Nature Communications
Ammonia monooxygenase (AMO) oxidizes ammonia to hydroxylamine. Limited knowledge of the structural information of AMO hinders our understanding of the molecular mechanism underlying ammonia oxidation, impacting the mitigation of greenhouse gas emissions ...
Xiaoyun Yang, Zongqiang Li, Tie-Qiang Mao, Chaofu Ma, Guo-Hao Chen, Hong-Po Dong, Sen-Fang Sui   +6 more
doaj   +1 more source

Isolation, identification and characteristics of ammonia-oxidation bacteria from Anammox reactor

浙江大学学报. 农业与生命科学版, 2001
6 strains of ammonia-oxidation bacteria were isolated from an Anammox reactor, and the biological characteristics of strain N1 were studied. The results showed that strain N1 had the ability to oxidize ammonium anaerobically.
HU Bao-lan, ZHENG Ping, GUAN Li-li
doaj   +1 more source

Formation of hydroxylamine on dust grains via ammonia oxidation

, 2015
The quest to detect prebiotic molecules in space, notably amino acids, requires an understanding of the chemistry involving nitrogen atoms. Hydroxylamine (NH$_2$OH) is considered a precursor to the amino acid glycine.
Garrod, Robin T., He, Jiao, Lemaire, Jean-Louis, Vidali, Gianfranco   +3 more
core   +3 more sources

Unraveling the active microbial populations involved in nitrogen utilization in a vertical subsurface flow constructed wetland treating urban wastewater [PDF]

, 2017
The dynamics of the active microbial populations involved in nitrogen transformation in a vertical subsurface flow constructed wetland (VF) treating urban wastewater was assessed.
García Serrano, Joan, Guivernau Ribalta, Miriam, Pelissari, Catiane, Sezerino, Pablo Heleno, Silva de Souza, Samara, Viñas Canals, Marc, Ávila Martín, Cristina   +6 more
core   +2 more sources

Bioinspired Stabilization of Fluorescent Au@SiO2 Tracers for Multimodal Biological Imaging

Advanced Functional Materials, EarlyView.
This study demonstrates a bioinspired stabilization strategy for fluorescent gold‐silica nanoparticles. Inspired by natural biosilica maturation, high‐temperature calcination transforms the silica shells, preventing dissolution in cell culture media and intracellular environments.
Wang Sik Lee, Henry Lee, Patricia Taladriz‐Blanco, Dimitri Vanhecke, Barbara Rothen‐Rutishauser, Alke Petri‐Fink   +5 more
wiley   +1 more source