Results 51 to 60 of about 33,148 (256)

Photocatalytic Water Splitting on the Lunar Surface: Prospects for In Situ Resource Utilization

Advanced Materials Interfaces, EarlyView.
Water has been found in craters on the moon nearby locations which are illuminated >80% of the time. Photocatalysis uses energy from sunlight to drive chemical reactions such as water splitting to produce oxygen and hydrogen. It is a scalable technology that requires lighter equipment and utilizes resources available on the moon. ABSTRACT The discovery
Ranjani Kalyan, Thomas D. Small, Gregory F. Metha, Mahmoud Adel Hamza, Thomas J. O'Dea, Yideng Shen, Cameron J. Shearer   +6 more
wiley   +1 more source

Growth and activity of ANME clades with different sulfate and sulfide concentrations in presence of methane

Frontiers in Microbiology, 2015
Extensive geochemical data showed that significant methane oxidation activity exists in marine sediments. The organisms responsible for this activity are anaerobic methane-oxidizing archaea (ANME) that occur in consortia with sulfate-reducing bacteria. A
Peer H.A. Timmers, H.C. Aura Widjaja-Greefkes, Javier eRamiro-Garcia, Javier eRamiro-Garcia, Caroline M. Plugge, Caroline M. Plugge, Alfons J.M. Stams, Alfons J.M. Stams   +7 more
doaj   +1 more source

Linking Biogeochemical and Hydrodynamic Processes to Model Methane Fluxes in Shallow, Tropical Floodplain Lakes

Journal of Advances in Modeling Earth Systems, 2023
Floodplains lakes are abundant in the Amazon basin and are important methane sources to the atmosphere. Existing biogeochemical models require modifications and inclusion of hydrodynamic processes operative in shallow, warm waters to be applied to these ...
Mingyang Guo, John M. Melack, Wencai Zhou, Pedro M. Barbosa, Joao H. F. Amaral, Qianlai Zhuang   +5 more
doaj   +1 more source

Transducers Across Scales and Frequencies: A System‐Level Framework for Multiphysics Integration and Co‐Design

Advanced Materials Technologies, EarlyView.
Transducers convert physical signals into electrical and optical representations, yet each mechanism is bounded by intrinsic trade‐offs across bandwidth, sensitivity, speed, and energy. This review maps transduction mechanisms across physical scale and frequency, showing how heterogeneous integration and multiphysics co‐design transform isolated ...
Aolei Xu, Mengyao Xiao, Zhouli Sui, Yinpeng Wang, Daoye Zheng, Yuxin Liu, Luwei Wang, Huajun Liu, Chengkuo Lee   +8 more
wiley   +1 more source

Self‐Powered Visible‐Blind Graphene/NiO/ZnO UV‐C Photodiodes

Advanced Optical Materials, EarlyView.
“A scalable architecture for self‐powered UV‐C photodiodes integrates defect‐engineered p‐NiO/n‐ZnO heterojunctions with highly UV‐C transparent graphene anodes. The type‐II band alignment combined with the built‐in electrical field enables robust zero‐bias charge separation.
Umut Kaya, Leon Lörcher, Yasaman Jarrahizadeh, Axel Lorke, Wolfgang Mertin, Gerd Bacher   +5 more
wiley   +1 more source

A Perspective on the Applications of Triphasic Gas Storage in Electrochemical Systems

Advanced Science, EarlyView.
Gas storage in microporous materials positioned locally at an electrode or electrocatalyst surface enhances electrochemical processes. Abstract Microporous materials store gases under dry conditions (e.g., hydrogen or oxygen via physisorption), but in some cases microporous materials also show triphasic (e.g., in a solid|gas|liquid system) gas storage ...
Zhongkai Li, Corin T. Scott, Taku Suzuki‐Osborne, John P. Lowe, Dominic Taylor, Mariolino Carta, Neil B. McKeown, Andrew D. Burrows, Lucia H. Mascaro, Frank Marken   +9 more
wiley   +1 more source

Investigation on the aerobic methanotrophic community and the dominant taxon Methylomarinum in seagrass ecosystem

Environmental Microbiome
Background Methanotrophs are a key biological methane sink, and aerobic methanotrophs critically reduce wetland methane emissions under global climate change.
Tongyin Liang, Junde Dong, Weiguo Zhou, Xiaofang Huang, Hongbin Liu, Yuhang Zhang, Qingsong Yang, Manzoor Ahmad, Luxiang Chen, Juan Ling   +9 more
doaj   +1 more source

Oxidation of Methane

Journal of the Fuel Society of Japan, 1953
メタンを燐酸, 硼酸, 砒酸, アンチモン酸系のいわゆる酸化能力の弱い解媒を用いて常圧気相で約600℃の温度で空気酸化してホルムアルデヒドを合成し, 各触媒のホルムアルデヒド生成能力を比較した。用いた触媒の中では, 砒酸鉄に金属酸化物を添加した数種の触媒を除いてホルムアルデヒドの生成能力が低いことを認めた。
openaire   +2 more sources

Recent Advances in Laser‐Induced Graphene‐Based Gas Sensors: From Sensing Mechanisms to Biomedical Applications

Advanced Science, EarlyView.
Laser‐induced graphene (LIG) provides a scalable, laser‐direct‐written route to porous graphene architecture with tunable chemistry and defect density. Through heterojunction engineering, catalytic functionalization, and intrinsic self‐heating, LIG achieves highly sensitive and selective detection of NOX, NH3, H2, and humidity, supporting next ...
Md Abu Sayeed Biswas, Ankan Dutta, Shuvendu Das, Abu Musa Abdullah, Wanqing Zhang, Fatema Tuz Zohra, Huanyu Cheng   +6 more
wiley   +1 more source

Thermochemical oxidation of methane by manganese oxides in hydrothermal sediments

Communications Earth & Environment, 2023
Microbial anaerobic oxidation of methane coupled to the reduction of Mn(IV)-oxides, typically MnO2, derived from continental weathering and riverine transport has been proposed as a globally important sink of methane.
Qin Huang, Shao-Yong Jiang, Dao-Hui Pi, Kurt O. Konhauser, Xing-Ping Wen, Liu-Yi Lu, Hao Yan   +6 more
doaj   +1 more source