Results 91 to 100 of about 44,882 (330)

Two‐Step Tandem Catalysis for High‐Efficiency Ammonia Synthesis Via Nitrate Reduction on Anion‐Intercalated CoNi LDH and Cu/Cu2O

Advanced Science, EarlyView.
By integrating Cu/Cu2O and CoNi LDH, tandem kinetic descriptors, including a volcano curve, are employed to predict rate constants, facilitating ideal kinetic matching for efficient ammonia synthesis. The highest ammonia yield (1.12 mmol cm−2 h−1) and Faraday efficiency (99.78%) are achieved by rate matching between Cu/Cu2O and MoO4‐CoNi LDH.
Changzheng Lin, Weijia Li, Hao Chen, Jiangtao Feng, Mengyuan Zhu, Jinwen Shi, Mingtao Li, Bo Hou, Zhenyu Wang, Xin Chen, Jia Liu, Wei Yan   +11 more
wiley   +1 more source

Ready-to-Use Vegetable Salads: Physicochemical and Microbiological Evaluation

Applied Sciences
Ready-to-use vegetable salads are minimally processed products, rich in antioxidants, but are associated with a high microbiological risk and possibly, in some cases, with a high content of nitrites.
Eufrozina Albu, Ancuta Elena Prisacaru, Cristina Ghinea, Florin Ursachi, Laura Carmen Apostol   +4 more
doaj   +1 more source

METHOD FOR NITRATE DETERMINATION IN WATER IN THE PRESENCE OF NITRITE [PDF]

Chemistry Journal of Moldova: General, Industrial and Ecological Chemistry, 2014
The study relates to determination of nitrate in presence of nitrite in water and can be used in the quality monitoring of natural water (surface and groundwater), drinking water, water from fish farms and public aquaria where autonomous filters is used.
Maria Sandu, Tudor Lupascu, Anatol Tarita, Tatiana Goreacioc, Sergiu Turcan, Elena Mosanu   +5 more
doaj  

Highly Transparent, Conductive, and Mechanically Robust Hydrogels via Rapid In Situ Synthesis for Flexible Electronics

Advanced Electronic Materials, EarlyView.
A novel strategy for rapid in situ synthesis of hydrogels using Mo₂C‐derived molybdenum polyoxometalates (Mo‐POM) and ammonium persulfate enables room‐temperature polymerization. The hydrogels exhibit high transparency, conductivity, mechanical robustness, and durability. Integration of LiCl ensures antifreeze and water retention, while Mo‐POM/alginate
W. Yuan, J. Zhao
wiley   +1 more source

p‐Type TiO2 Nanotubes: Quantum Confinement and Pt Single Atom Decoration Enable High Selectivity Photocatalytic Nitrate Reduction to Ammonia

Angewandte Chemie, EarlyView.
p‐type TiO2 nanotubes with quantum confinement effect enable photocatalytic nitrate reduction to ammonia. The decoration with Pt single atoms significantly enhances the photocatalytic activity and selectivity toward ammonia while the quantum confinement effect and p‐type conductivity of the nanotubes maintain their key roles in the photocatalytic ...
Hayoon Jung, Hyesung Kim, Johannes Will, Erdmann Spiecker, Patrik Schmuki   +4 more
wiley   +2 more sources

Fe‐N‐C in Proton Exchange Membrane Fuel Cells: Impact of Ionomer Loading on Degradation and Stability

Advanced Energy Materials, EarlyView.
The impact of the ionomer to catalyst ratio for atomic Fe in N‐doped C (Fe‐N‐C) degradation in proton exchange membrane fuel cells is elucidated by advanced electrochemical techniques. Kinetic degradation dominants, with the reduction in turnover frequency of FeNx active sites initially suppressed with increasing ionomer loading.
Angus Pedersen, Rifael Z. Snitkoff‐Sol, Yan Presman, Laetitia Dubau, Rongsheng Cai, Jesús Barrio, Sarah J. Haigh, Frédéric Maillard, Ifan E. L. Stephens, Maria‐Magdalena Titirici, Lior Elbaz   +10 more
wiley   +1 more source

Isotope Techniques in Chemical Wastewater Treatment: Opportunities and Uncertainties

Angewandte Chemie, EarlyView.
In this review, we would first introduce basic knowledge about isotopic compounds and then scrutinize the physical and chemical influence induced by isotope changes. Special attention will be paid to the uncertainties in explaining the isotope results.
Hongyu Zhou, Xiaoguang Duan, Bingkun Huang, Shuang Zhong, Cheng Cheng, Virender K. Sharma, Shaobin Wang, Bo Lai   +7 more
wiley   +2 more sources

Direct Observation of Electron Donation onto the Reactants and a Transient Poisoning Mechanism During CO2 Electroreduction on Ni Single Atom Catalysts

Angewandte Chemie, EarlyView.
In situ techniques reveal key insights into the electrochemical reduction of CO2 on Ni single atom catalysts. Through poisoning studies, we reveal that the reduction of the system does not result in a metal‐based reduction, rather it is associated with donation of electrons onto a combination of the support and the reactants.
Josh Leverett, Ghazal Baghestani, Thanh Tran‐Phu, Jodie A. Yuwono, Priyank Kumar, Bernt Johannessen, Darcy Simondson, Haotien Wen, Shery L. Y. Chang, Antonio Tricoli, Alexandr N. Simonov, Liming Dai, Rose Amal, Rahman Daiyan, Rosalie K. Hocking   +14 more
wiley   +2 more sources

Nitrogen-Doped Carbon Quantum Dots as Fluorescent Probes for Sensitive and Selective Detection of Nitrite

Molecules, 2017
Nitrites are the upstream precursors of the carcinogenic nitrosamines, which are widely found in the natural environment and many food products. It is important to develop a simple and sensitive sensor for detecting nitrites. In this work, a fluorescence
Zhibiao Feng, Zeliang Li, Xingwei Zhang, Yanping Shi, Nan Zhou   +4 more
doaj   +1 more source

TITRAMETRIC DETERMINATION OF NITRITES. [PDF]

Journal of the American Chemical Society, 1916
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openaire   +2 more sources