scholarly journals Nitric oxide emission during the reductive heterogeneous photocatalysis of aqueous nitrate with TiO2

RSC Advances ◽  
2015 ◽  
Vol 5 (104) ◽  
pp. 85319-85322 ◽  
Author(s):  
V. Nahuel Montesinos ◽  
Natalia Quici ◽  
Hugo Destaillats ◽  
Marta I. Litter
Keyword(s):  
Nitric Oxide ◽  
Formic Acid ◽  
Nitrogen Dioxide ◽  
Heterogeneous Photocatalysis ◽  
Photocatalytic Reduction ◽  
Nitric Oxide Emission ◽  
Hole Scavenger ◽  
First Time

For the first time, nitric oxide (NO), a precursor of nitrogen dioxide (a NIOSH-listed pollutant), has been found to be one of the final products of the photocatalytic reduction of nitrate in water using TiO2 and formic acid as a hole scavenger.

scholarly journals Photocatalytic Reduction of Hexavalent Chromium with Nanosized TiO2 in Presence of Formic Acid

2019 ◽  
Vol 3 (2) ◽  
pp. 33 ◽  
Author(s):  
Jahida Binte Islam ◽  
Mai Furukawa ◽  
Ikki Tateishi ◽  
Hideyuki Katsumata ◽  
Satoshi Kaneco
Keyword(s):  
Titanium Dioxide ◽  
Formic Acid ◽  
Tio2 Nanoparticles ◽  
Hexavalent Chromium ◽  
Oxidation Reaction ◽  
Photocatalytic Reduction ◽  
Nanosized Titanium Dioxide ◽  
Hole Scavenger ◽  
Nanosized Tio2 ◽  
Commercial Tio2

Nanosized titanium dioxide (TiO2) nanoparticles were used for the photocatalytic reduction of hexavalent chromium in the presence of formic acid. The photoreduction of Cr(VI) in the absence of formic acid was quite slow. When formic acid was added in the chromium solution as the hole scavenger, a rapid photocatalytic reduction of Cr(VI) was observed, owing to the consumption of hole and the acceleration of the oxidation reaction. Furthermore, three commercial TiO2 nanoparticles (AEROXIDE® P25; Ishihara Sangyo ST-01; FUJIFILM Wako Pure Chemical Corp.) were evaluated for the photoactivity of reduction of Cr(VI).

Enhanced photocatalytic reduction of aqueous Pb(II) over Ag loaded TiO2with formic acid as hole scavenger

2012 ◽  
Vol 47 (3) ◽  
pp. 327-336 ◽  
Author(s):  
Liyuan Li ◽  
Fang Jiang ◽  
Jingliang Liu ◽  
Haiqin Wan ◽  
Yuqiu Wan ◽  
...  
Keyword(s):  
Formic Acid ◽  
Photocatalytic Reduction ◽  
Hole Scavenger

scholarly journals Heterogeneous Photocatalysis and Prospects of TiO2-Based Photocatalytic DeNOxing the Atmospheric Environment

Catalysts ◽  
2018 ◽  
Vol 8 (11) ◽  
pp. 553 ◽  
Author(s):  
Nick Serpone
Keyword(s):  
Nitric Oxide ◽  
Metal Oxide ◽  
Nitrogen Dioxide ◽  
Active Sites ◽  
Heterogeneous Photocatalysis ◽  
Atmospheric Environment ◽  
Laboratory Setting ◽  
Noise Barriers ◽  
Surface Active ◽  
The Many

This article reviews the efforts of the last two decades to deNOxify the atmospheric environment with TiO2-based photocatalytic materials supported on various cementitious-like substrates. Prior to undertaking this important aspect of applied photocatalysis with metal-oxide emiconductor photocatalysts, however, it is pertinent to describe and understand the fundamentals of Heterogeneous Photocatalysis. The many attempts done in a laboratory setting to degrade (deNOxify) the major components that make up the NOx, namely nitric oxide (NO) and nitrogen dioxide (NO2), but most importantly the efforts expended in deNOxifying the real environment upon depositing titania-based coatings on various model and authentic infrastructures, such as urban roads, highway noise barriers, tunnels, and building external walls among others, are examined. Both laboratory and outdoor experimentations have been performed toward NOx being oxidized to form nitrates (NO3−) that remain adsorbed on the TiO2-based photocatalytic surfaces (except in tunnels—indoor walls) but get subsequently dislodged by rain or by periodic washings of the infrastructures. However, no serious considerations have been given to the possible conversion of NOx via photocatalytic reduction back to N2 and O2 gases that would restore the atmospheric environment, as the adsorbed nitrates block the surface-active sites of the photocatalyst and when washed-off ultimately cause unduly damages to the environment.

Possible Role of Nitric Oxide Emission from Bird Embryos

2004 ◽  
Vol 15 (3) ◽  
pp. 105-106 ◽  
Author(s):  
A. Ar ◽  
O. Ifergan ◽  
A. Feldman ◽  
L. Zelik ◽  
A. Reizis
Keyword(s):  
Nitric Oxide ◽  
Nitric Oxide Emission

High resolution measurements reveal abiotic and biotic mechanisms of elevated nitric oxide emission after wetting dry soil

2021 ◽  
pp. 108316
Author(s):  
Eric W. Slessarev ◽  
Aral C. Greene ◽  
Peter M. Homyak ◽  
Samantha C. Ying ◽  
Joshua P. Schimel
Keyword(s):  
Nitric Oxide ◽  
High Resolution ◽  
Nitric Oxide Emission ◽  
Dry Soil
Sign in / Sign up

Export Citation Format

Share Document