scholarly journals Photocatalytic Nitrogen Reduction by Ti 3 C 2 MXene Derived Oxygen Vacancy‐Rich C/TiO 2

2021 ◽  
pp. 2000282
Author(s):  
Jing Qian ◽  
Sen Zhao ◽  
Wenqiang Dang ◽  
Yuan Liao ◽  
Wen Zhang ◽  
...  
Keyword(s):  
Oxygen Vacancy ◽  
Nitrogen Reduction

Efficient photocatalytic nitrogen fixation under ambient conditions enabled by the heterojunctions of n-type Bi2MoO6 and oxygen-vacancy-rich p-type BiOBr

Nanoscale ◽  
2019 ◽  
Vol 11 (21) ◽  
pp. 10439-10445 ◽  
Author(s):  
Xiaolan Xue ◽  
Renpeng Chen ◽  
Changzeng Yan ◽  
Yi Hu ◽  
Wenjun Zhang ◽  
...  
Keyword(s):  
Nitrogen Fixation ◽  
Oxygen Vacancy ◽  
Ambient Conditions ◽  
Nitrogen Reduction ◽  
Photocatalytic Activities ◽  
P Type

Bi2MoO6/OV-BiOBr heterojunctions are synthesized and show good photocatalytic activities for nitrogen reduction to ammonia under ambient conditions.

Controlled oxygen vacancy engineering on In2O3−x/CeO2−y nanotubes for highly selective and efficient electrocatalytic nitrogen reduction

2020 ◽  
Vol 7 (19) ◽  
pp. 3609-3619
Author(s):  
Zengyao Wang ◽  
Jianfeng Shen ◽  
Wenzhi Fu ◽  
Jiangwen Liao ◽  
Juncai Dong ◽  
...  
Keyword(s):  
Transition Metal ◽  
Oxygen Vacancy ◽  
Metal Oxides ◽  
Transition Metal Oxides ◽  
Oxygen Vacancies ◽  
Reduction Reaction ◽  
Nitrogen Reduction

Introducing and adjusting the oxygen vacancies (VO) of transition metal oxides has been proposed as a significant and effective way to tackle the sluggish nitrogen reduction reaction (NRR) in the electrocatalysis process.

Modulating CoFe2O4 nanocube with oxygen vacancy and carbon wrapper towards enhanced electrocatalytic nitrogen reduction to ammonia

2021 ◽  
pp. 120452
Author(s):  
Chuang Wang ◽  
Liang-Liang Gu ◽  
Sheng-You Qiu ◽  
Jian Gao ◽  
Yong-Chao Zhang ◽  
...  
Keyword(s):  
Oxygen Vacancy ◽  
Nitrogen Reduction

Ammonia Synthesis: Photocatalytic Nitrogen Reduction by Ti 3 C 2 MXene Derived Oxygen Vacancy‐Rich C/TiO 2 (Adv. Sustainable Syst. 4/2021)

2021 ◽  
Vol 5 (4) ◽  
pp. 2170007
Author(s):  
Jing Qian ◽  
Sen Zhao ◽  
Wenqiang Dang ◽  
Yuan Liao ◽  
Wen Zhang ◽  
...  
Keyword(s):  
Oxygen Vacancy ◽  
Ammonia Synthesis ◽  
Nitrogen Reduction

Oxygen vacancy enhancing mechanism of nitrogen reduction reaction property in Ru/TiO2

2019 ◽  
Vol 39 ◽  
pp. 144-151 ◽  
Author(s):  
Shan Cheng ◽  
Yi-Jing Gao ◽  
Yi-Long Yan ◽  
Xu Gao ◽  
Shao-Hua Zhang ◽  
...  
Keyword(s):  
Oxygen Vacancy ◽  
Reduction Reaction ◽  
Nitrogen Reduction

Electrochemically synthesized SnO2 with tuned oxygen vacancy for efficient electrocatalytic nitrogen fixation

Nanoscale ◽  
2021 ◽  
Author(s):  
Xiaojia He ◽  
Haoran Guo ◽  
Tianhao Liao ◽  
Yi Pu ◽  
Long Lai ◽  
...  
Keyword(s):  
Energy Source ◽  
Renewable Energy Source ◽  
Nitrogen Fixation ◽  
Renewable Energy ◽  
Oxygen Vacancy ◽  
Reduction Reaction ◽  
Nitrogen Reduction

Electrochemical nitrogen reduction reaction (NRR) driven by a renewable energy source offers a sustainable and environment-benign route to achieve ammonia (NH3) production, but it is highly dependent on efficient and...

Promoting Nitrogen Electroreduction to Ammonia with Bismuth Nanocrystals and Potassium Cations in Water

2020 ◽  
Author(s):  
Jaecheol Choi ◽  
Hoang-Long Du ◽  
Manjunath Chatti ◽  
Bryan H. R. Suryanto ◽  
Alexandr Simonov ◽  
...  
Keyword(s):  
Electrocatalytic Activity ◽  
Aqueous Electrolyte ◽  
Electrolyte Solutions ◽  
Reduction Reaction ◽  
Nitrogen Reduction ◽  
Aqueous Electrolyte Solutions

We demonstrate that bismuth exhibits no measurable electrocatalytic activity for the nitrogen reduction reaction to ammonia in aqueous electrolyte solutions, contrary to several recent reports on the highly impressive rates of Bi-catalysed electrosynthesis of NH<sub>3</sub> from N<sub>2</sub>.

Impact Of Synthesis Route on the Water Oxidation Kinetics of Hematite Photoanodes

2020 ◽  
Author(s):  
Camilo A. Mesa ◽  
Ludmilla Steier ◽  
Benjamin Moss ◽  
Laia Francàs ◽  
James E. Thorne ◽  
...  
Keyword(s):  
Oxygen Vacancy ◽  
Reaction Kinetics ◽  
Water Oxidation ◽  
Oxidation Kinetics ◽  
Oxidation Reaction ◽  
Charge Accumulation ◽  
Optical Signals ◽  
Current Voltage ◽  
Voltage Performance ◽  
Kinetics Of

<p><i>Operando</i> spectroelectrochemical analysis is used to determine the water oxidation reaction kinetics for hematite photoanodes prepared using four different synthetic procedures. Whilst these photoanodes exhibit very different current / voltage performance, their underlying water oxidation kinetics are found to be almost invariant. Lower photoanode performance was found to correlate with the observation of optical signals indicative of charge accumulation in mid-gap oxygen vacancy states, indicating these states do not contribute directly to water oxidation.</p>

A seven year plan for upgrading the 200.000 p.e. treatment plant of Uppsala, Sweden

1994 ◽  
Vol 29 (12) ◽  
pp. 117-127
Author(s):  
Jan Erik Lind ◽  
Ernst Olof Swedling
Keyword(s):  
Cost Efficiency ◽  
Sewage Treatment ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
Working Environment ◽  
Regional Environment ◽  
Nitrogen Reduction ◽  
Total Investment ◽  
Close Cooperation ◽  
The Cost

The sewage treatment plant of Uppsala was originally built in 1946 and has since then been extended and upgraded several times up to 1972 when the last major upgrading was completed. In 1987 it was decided to renew the treatment plant for at least another 20-30 years of operation and to upgrade the biological process to include nitrogen reduction. A 7 year plan covering some 18 items with a total investment cost of approximately 120 MSEK was set in action during 1987. The aim was to raise the cost efficiency by introducing modern techniques, new machinery, a better working environment and a better understanding of the processes used. The need to keep the plant in operation during reconstruction work has caused difficulties, delays and unforseen costs but a close cooperation between all parties concerned (operators, contractors, engineers and the regional environment administration) has solved most of the problems. Experiences so far include an improved effluent quality, a better cost efficiency, a healthier and more engaged operating staff. A research team has been engaged to develop and introduce a nitrogen reduction scheme in the activated sludge process. This has been a challenging and fruitful experience.

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