Powering denitrification: the perspectives of electrocatalytic nitrate reduction

Atomistic Insights into Nitrogen-Cycle Electrochemistry: A Combined DFT and Kinetic Monte Carlo Analysis of NO Electrochemical Reduction on Pt(100)

“…Nitrogen can be transformed through both biological and physical processes within the nitrogen cycle to form a broad spectrum of inorganic compounds, including ammonium (NH 4 + ), hydrazine (N 2 H 4 ), hydroxylamine (NH 3 OH + ), nitrite (NO 2 -), nitrate (NO 3 -), nitric oxide (NO), and nitrous oxide (N 2 O). 1-2 While many of these processes are essential to life, large-scale commercial food production has led to overfertilization and consequent accumulation of nitrate and nitrite ions groundwater and in agricultural runoff streams.…”

Nitrate and Nitrite Electrocatalytic Reduction at Layer-by-Layer Films Composed of Dawson-type Heteropolyanions Mono-substituted with Transitional Metal Ions and Silver Nanoparticles

“…The electrode materials that reveal high activity in NRR are limited to noble metals and their bimetallic alloys [4,20] as well as graphene [21]. However, most of these electrocatalytical systems require high acidity [4] or alkalinity [22,23] for effective NRR. The electrocatalysis of NRR has been observed on electrodes functionalized with transition metal ions cyclams at rather negative potentials (ca.…”

“…Electrochemical techniques of denitrification via NRR have attracted special interest because of the possibility of operation in high nitrate concentrations [4,20]. The electrode materials that reveal high activity in NRR are limited to noble metals and their bimetallic alloys [4,20] as well as graphene [21].…”

“…The human alteration substantially alters the nitrogen cycle caused the general increase of both availability and the mobility of nitrogen over large terrestrial regions [1]. Inappropriate drainage of waste water and over-manuring with natural and synthetic fertilizers is becoming a severe environmental concern [2][3][4][5]. In particular, being the main source of the drinking water, ground waters are characterized worldwide as having increased nitrate concentration [6].…”

Extracellular Electron Transfer of <i>Pseudomonas stutzeri</i> Driven by Lithotrophic and Mixotrophic Denitrification

“…), which has led to the extensive eutrophication of fresh water and coastal zone, acid rain, and global warming. 1 In particular, Haber-Bosch and fossil fuels combustion have been the major cause of those environmental problems, and their nitrogen fixation doubled the natural rate of terrestrial nitrogen fixation driven by microbial activity. 2 Given that increasing human population would further disrupt the nitrogen cycle in nature, it is of utmost importance to restore and sustain the balance of nitrogen cycle.…”