scholarly journals Photocatalysis: Light-Switchable Oxygen Vacancies in Ultrafine Bi5 O7 Br Nanotubes for Boosting Solar-Driven Nitrogen Fixation in Pure Water (Adv. Mater. 31/2017)

2017 ◽  
Vol 29 (31) ◽  
Author(s):  
Shengyao Wang ◽  
Xiao Hai ◽  
Xing Ding ◽  
Kun Chang ◽  
Yonggang Xiang ◽  
...  
Keyword(s):  
Nitrogen Fixation ◽  
Oxygen Vacancies ◽  
Pure Water

Light-Switchable Oxygen Vacancies in Ultrafine Bi5 O7 Br Nanotubes for Boosting Solar-Driven Nitrogen Fixation in Pure Water

2017 ◽  
Vol 29 (31) ◽  
pp. 1701774 ◽  
Author(s):  
Shengyao Wang ◽  
Xiao Hai ◽  
Xing Ding ◽  
Kun Chang ◽  
Yonggang Xiang ◽  
...  
Keyword(s):  
Nitrogen Fixation ◽  
Oxygen Vacancies ◽  
Pure Water

Fe-doping induced morphological changes, oxygen vacancies and Ce3+–Ce3+ pairs in CeO2 for promoting electrocatalytic nitrogen fixation

2020 ◽  
Vol 8 (12) ◽  
pp. 5865-5873 ◽  
Author(s):  
Ke Chu ◽  
Yong-hua Cheng ◽  
Qing-qing Li ◽  
Ya-ping Liu ◽  
Ye Tian
Keyword(s):  
Nitrogen Fixation ◽  
Morphological Change ◽  
Oxygen Vacancies ◽  
Morphological Changes ◽  
Fe Doping ◽  
Synergetic Effects

Fe-doping induced synergetic effects, including the morphological change of crystalline CeO2 to partial-amorphous nanosheets, enriched O-vacancies and active Ce3+–Ce3+ pairs, were all responsible for the significantly enhanced NRR activity of Fe-CeO2.

Oxygen vacancy-rich MoO3−x nanobelts for photocatalytic N2 reduction to NH3 in pure water

2019 ◽  
Vol 9 (3) ◽  
pp. 803-810 ◽  
Author(s):  
Yehuan Li ◽  
Xin Chen ◽  
Mingjian Zhang ◽  
Yuanmin Zhu ◽  
Wenju Ren ◽  
...  
Keyword(s):  
Nitrogen Fixation ◽  
Oxygen Vacancy ◽  
Pure Water ◽  
Green Strategy

Photocatalytic nitrogen fixation is a promising sustainable and green strategy for NH3 synthesis.

Visible-Light-Driven Nitrogen Fixation Catalyzed by Bi5O7Br Nanostructures: Enhanced Performance by Oxygen Vacancies

2020 ◽  
Vol 142 (28) ◽  
pp. 12430-12439 ◽  
Author(s):  
Peishen Li ◽  
Ziang Zhou ◽  
Qiang Wang ◽  
Ming Guo ◽  
Shaowei Chen ◽  
...  
Keyword(s):  
Nitrogen Fixation ◽  
Visible Light ◽  
Oxygen Vacancies ◽  
Visible Light Driven

Plasma-engineered NiO nanosheets with enriched oxygen vacancies for enhanced electrocatalytic nitrogen fixation

2020 ◽  
Vol 7 (2) ◽  
pp. 455-463 ◽  
Author(s):  
Yu-biao Li ◽  
Ya-ping Liu ◽  
Jing Wang ◽  
Ya-li Guo ◽  
Ke Chu
Keyword(s):  
Nitrogen Fixation ◽  
Oxygen Vacancies ◽  
Plasma Technique ◽  
Nio Nanosheets

Plasma technique can readily create the enriched oxygen vacancies which enable the NiO to be an active and durable catalyst for electrocatalytic fixation of N2 to NH3.

Surface Plasmon Enabling Nitrogen Fixation in Pure Water through a Dissociative Mechanism under Mild Conditions

2019 ◽  
Vol 141 (19) ◽  
pp. 7807-7814 ◽  
Author(s):  
Canyu Hu ◽  
Xing Chen ◽  
Jianbo Jin ◽  
Yong Han ◽  
Shuangming Chen ◽  
...  
Keyword(s):  
Nitrogen Fixation ◽  
Surface Plasmon ◽  
Pure Water ◽  
Dissociative Mechanism ◽  
Mild Conditions

scholarly journals Wavelength-Dependent Solar N2 Fixation into Ammonia and Nitrate in Pure Water

Research ◽  
2020 ◽  
Vol 2020 ◽  
pp. 1-12
Author(s):  
Wenju Ren ◽  
Zongwei Mei ◽  
Shisheng Zheng ◽  
Shunning Li ◽  
Yuanmin Zhu ◽  
...  
Keyword(s):  
Oxygen Vacancies ◽  
Surface Defects ◽  
Environmental Concern ◽  
Pure Water ◽  
Molar Fraction ◽  
Underlying Mechanism ◽  
Equilibrium Potential ◽  
Simultaneous Formation ◽  
Promising Alternative ◽  
Simulated Solar Light

Solar-driven N2 fixation using a photocatalyst in water presents a promising alternative to the traditional Haber-Bosch process in terms of both energy efficiency and environmental concern. At present, the product of solar N2 fixation is either NH4+ or NO3-. Few reports described the simultaneous formation of ammonia (NH4+) and nitrate (NO3-) by a photocatalytic reaction and the related mechanism. In this work, we report a strategy to photocatalytically fix nitrogen through simultaneous reduction and oxidation to produce NH4+ and NO3- by W18O49 nanowires in pure water. The underlying mechanism of wavelength-dependent N2 fixation in the presence of surface defects is proposed, with an emphasis on oxygen vacancies that not only facilitate the activation and dissociation of N2 but also improve light absorption and the separation of the photoexcited carriers. Both NH4+ and NO3- can be produced in pure water under a simulated solar light and even till the wavelength reaching 730 nm. The maximum quantum efficiency reaches 9% at 365 nm. Theoretical calculation reveals that disproportionation reaction of the N2 molecule is more energetically favorable than either reduction or oxidation alone. It is worth noting that the molar fraction of NH4+ in the total product (NH4+ plus NO3-) shows an inverted volcano shape from 365 nm to 730 nm. The increased fraction of NO3- from 365 nm to around 427 nm results from the competition between the oxygen evolution reaction (OER) at W sites without oxygen vacancies and the N2 oxidation reaction (NOR) at oxygen vacancy sites, which is driven by the intrinsically delocalized photoexcited holes. From 427 nm to 730 nm, NOR is energetically restricted due to its higher equilibrium potential than that of OER, accompanied by the localized photoexcited holes on oxygen vacancies. Full disproportionation of N2 is achieved within a range of wavelength from ~427 nm to ~515 nm. This work presents a rational strategy to efficiently utilize the photoexcited carriers and optimize the photocatalyst for practical nitrogen fixation.

Fe-Doped BiOCl Nanosheets with Light-Switchable Oxygen Vacancies for Photocatalytic Nitrogen Fixation

2019 ◽  
Vol 2 (12) ◽  
pp. 8394-8398 ◽  
Author(s):  
Nan Zhang ◽  
Leigang Li ◽  
Qi Shao ◽  
Ting Zhu ◽  
Xiaoqing Huang ◽  
...  
Keyword(s):  
Nitrogen Fixation ◽  
Oxygen Vacancies
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