Results 71 to 80 of about 309,635 (167)

Bismuth Chalcogenide‐Based Photocatalysts for Nitrogen Reduction: Recent Progress and Prospects

Chemistry – A European Journal, Volume 32, Issue 39, 22 October 2026.
Bismuth chalcogenides emerge as promising visible‐light photocatalysts for sustainable ammonia synthesis, driven by tunable electronic structures and strong N2 activation. Recent advances reveal how defects, doping and heterojunction design synergistically enhance charge separation and reactivity. Key challenges and future directions highlight pathways
Mukesh K. Verma, Muhammad D. Bala, Phindile B. Khoza, Tshephiso R. Papo, Mzamo L. Shozi   +4 more
wiley   +1 more source

Heterogeneity of nitrogen fixation in the mesopelagic zone of the South China Sea

Frontiers in Marine Science
Biological dinitrogen (N2) fixation, the energetically expensive conversion of N2 gas to ammonia, plays an essential role in balancing the nitrogen budget in the ocean.
Siqi Wu, Siqi Wu, Xianhui Sean Wan, Xianhui Sean Wan, Moge Du, Moge Du, Xirong Chen, Corday R. Selden, Mar Benavides, Mar Benavides, Mar Benavides, Sophie Bonnet, Carolin R. Löscher, Carolin R. Löscher, M. Robert Hamersley, Margaret R. Mulholland, Xiuli Yan, Shuh-Ji Kao   +17 more
doaj   +1 more source

Nutrient limitation of primary productivity in the Southeast Pacific (BIOSOPE cruise) [PDF]

Biogeosciences, 2008
Iron is an essential nutrient involved in a variety of biological processes in the ocean, including photosynthesis, respiration and dinitrogen fixation. Atmospheric deposition of aerosols is recognized as the main source of iron for the surface ocean. In
S. Bonnet, C. Guieu, F. Bruyant, O. Prášil, F. Van Wambeke, P. Raimbault, T. Moutin, C. Grob, M. Y. Gorbunov, J. P. Zehr, S. M. Masquelier, L. Garczarek, H. Claustre   +12 more
doaj  

Nitrogen fixation and denitrification activity differ between coral- and algae-dominated Red Sea reefs

Scientific Reports, 2021
Coral reefs experience phase shifts from coral- to algae-dominated benthic communities, which could affect the interplay between processes introducing and removing bioavailable nitrogen.
Yusuf C. El-Khaled, Florian Roth, Nils Rädecker, Arjen Tilstra, Denis B. Karcher, Benjamin Kürten, Burton H. Jones, Christian R. Voolstra, Christian Wild   +8 more
doaj   +1 more source

MXene‐Based Electrocatalysts for Sustainable Nitrogen Conversion: From Ammonia Oxidation to Nitrogen and Nitrate Reduction

Advanced Materials Interfaces, Volume 13, Issue 20, 21 October 2026.
This review compares MXene‐based electrocatalysis for ammonia oxidation, nitrogen reduction, and nitrate reduction, highlighting reaction‐dependent differences in catalytic performance and stability. MXenes are generally more compatible with cathodic nitrogen and nitrate reduction, whereas anodic ammonia oxidation raises stability concerns.
Afaf Salah Eid, Alaa M. Ibrahim, Soon Hyung Kang   +2 more
wiley   +1 more source

N2 Fixation in the Eastern Arabian Sea: Probable Role of Heterotrophic Diazotrophs

Frontiers in Marine Science, 2017
Biogeochemical implications of global imbalance between the rates of marine dinitrogen (N2) fixation and denitrification have spurred us to understand the former process in the Arabian Sea, which contributes considerably to the global nitrogen budget ...
P. Kiran Kumar, Arvind Singh, R. Ramesh, T. Nallathambi   +3 more
doaj   +1 more source

Optimising Sulphur Fertilisation in Ryegrass–White Clover Swards Reduces Leached Nitrate Nitrogen Losses, While Increasing Plant Yield and Nitrogen Off‐Take

Journal of Plant Nutrition and Soil Science, Volume 189, Issue 5, Page 666-680, October 2026.
The inclusion of sulphur at two inorganic nitrogen rates (0 and 150 kg N ha−1) improves plant productivity in a ryegrass–white clover sward and reduces nitrate‐N loss to groundwater in a free‐draining sandy loam soil. ABSTRACT Background Reducing nitrogen (N) losses to water, lessening reliance on inorganic fertiliser and maintaining agricultural ...
Donal Kinsella, Imelda A. Casey, Patrick J. Forrestal   +2 more
wiley   +1 more source

Water mass dynamics drive nitrogen fixation rates and diazotroph community composition in the coastal ocean

Limnology and Oceanography, Volume 71, Issue 10, October 2026.
Abstract Although significant N2 fixation rates (NFRs) have been observed throughout mid‐Atlantic coastal waters, studies have been limited in their temporal coverage, and the methods used to detect nitrogen fixers (diazotrophs) and their findings have varied.
Katherine E. Crider, Corday R. Selden, Kimberly Powell, Sing‐how Tuo, Michael Muglia, Patterson Taylor, Margaret R. Mulholland, P. Dreux Chappell   +7 more
wiley   +1 more source

The activation and fixation of dinitrogen by iron phosphine complexes [PDF]

, 2017
Dinitrogen gas is the source of all biologically and industrially fixed nitrogen, yet the activation of this highly unreactive molecule is a significant challenge in modern chemistry.
Hill, Peter
core   +1 more source

Dissolved Organic Matter Impacts Nitrogen Fixation in the Arctic Ocean

Journal of Geophysical Research: Biogeosciences, Volume 131, Issue 10, October 2026.
Abstract Climate change‐driven sea ice loss, increased primary production, and nitrogen depletion are reshaping biogeochemistry in the Arctic Ocean (AO). These changes potentially increase the importance of nitrogen fixation, the conversion of dinitrogen gas into bioavailable ammonium, carried out by microorganisms called diazotrophs.
Stine Zander, Lisa W. von Friesen, Amane Fujiwara, Urban Wünsch, Olivier Grosso, Mar Benavides, Takuhei Shiozaki, Colin A. Stedmon, Lasse Riemann   +8 more
wiley   +1 more source