From semiconductors to semimetals: bismuth as a photocatalyst for NO oxidation in air

2014 ◽  
Vol 2 (29) ◽  
pp. 11065-11072 ◽  
Author(s):  
Qian Zhang ◽  
Ying Zhou ◽  
Fang Wang ◽  
Fan Dong ◽  
Wei Li ◽  
...  
Keyword(s):  
Indoor Air ◽  
Photocatalytic Oxidation ◽  
No Oxidation ◽  
Oxidation In Air ◽  
Oxidation Of No

Black semimetallic Bi films were found to be active in the photocatalytic oxidation of NO at the indoor air level.

Non-noble metal plasmonic photocatalysis in semimetal bismuth films for photocatalytic NO oxidation

2017 ◽  
Vol 19 (37) ◽  
pp. 25610-25616 ◽  
Author(s):  
Ying Zhou ◽  
Wei Li ◽  
Qian Zhang ◽  
Shuai Yan ◽  
Yuehan Cao ◽  
...  
Keyword(s):  
Energy Barrier ◽  
Photocatalytic Oxidation ◽  
Field Enhancement ◽  
Low Energy ◽  
No Oxidation ◽  
Strongly Correlated ◽  
Desorption Energy ◽  
Plasmonic Resonance ◽  
Bismuth Films ◽  
Oxidation Of No

Field enhancement and location of plasmonic resonance peaks are strongly correlated with the size of Bi particles. The low energy barrier for the conversion of NO to NO2 and low NO2 desorption energy over Bi particles indicate that Bi films are very active for photocatalytic oxidation of NO and possess good stability.

scholarly journals Research Progress on Photocatalytic/Photoelectrocatalytic Oxidation of Nitrogen Oxides

2021 ◽  
Author(s):  
Shuangjun Li ◽  
Linglong Chen ◽  
Zhong Ma ◽  
Guisheng Li ◽  
Dieqing Zhang
Keyword(s):  
Nitrogen Oxides ◽  
Photocatalytic Oxidation ◽  
Research Progress ◽  
Future Directions ◽  
Inorganic Semiconductors ◽  
Photoelectrocatalytic Oxidation ◽  
Low Concentrations ◽  
Photocatalytic System ◽  
Metal Organic ◽  
Oxidation Of No

AbstractThe emission of nitrogen oxides (NOx) increases year by year, causing serious problems to our livelihoods. The photocatalytic oxidation of NOx has attracted more attention recently because of its efficient removal of NOx, especially for low concentrations of NOx. In this review, the mechanism of the photocatalytic oxidation of NOx is described. Then, the recent progress on the development of photocatalysts is reviewed according to the categories of inorganic semiconductors, bismuth-based compounds, nitrogen carbide polymer, and metal organic frameworks (MOFs). In addition, the photoelectrocatalytic oxidation of NOx, a method involving the application of an external voltage on the photocatalytic system to further increase the removal efficiency of NOx, and its progress are summarized. Finally, we outline the remaining challenges and provide our perspectives on the future directions for the photocatalytic oxidation of NOx.

Gas-phase photocatalytic oxidation of NO over palladium modified TiO2 catalysts

2008 ◽  
Vol 9 (9) ◽  
pp. 1941-1944 ◽  
Author(s):  
Zhongyi Sheng ◽  
Zhongbiao Wu ◽  
Yue Liu ◽  
Haiqiang Wang
Keyword(s):  
Gas Phase ◽  
Photocatalytic Oxidation ◽  
Oxidation Of No

scholarly journals Synergistic Effect of Nanophotocatalysis and Nonthermal Plasma on the Removal of Indoor HCHO

2012 ◽  
Vol 2012 ◽  
pp. 1-8 ◽  
Author(s):  
Yuanwei Lu ◽  
Dinghui Wang ◽  
Yuting Wu ◽  
Chongfang Ma ◽  
Xingjuan Zhang ◽  
...  
Keyword(s):  
Synergistic Effect ◽  
Indoor Air ◽  
Photocatalytic Oxidation ◽  
Reaction Rate ◽  
Nonthermal Plasma ◽  
Pollutant Removal ◽  
Pollutant Concentration ◽  
Air Purification ◽  
Plate Electrode ◽  
Air Treatment

Photocatalysis is an effective method of air purification at the condition of a higher pollutant concentration. However, its wide application in indoor air cleaning is limited due to the low level of indoor air contaminants. Immobilizing the nanosized TiO2particles on the surface of activated carbon filter (TiO2/AC film) could increase the photocatalytic reaction rate as a local high pollutant concentration can be formed on the surface of TiO2by the adsorption of AC. However, the pollutant removal still decreased quickly with the increase in flow velocity, which results in a decrease in air treatment capacity. In order to improve the air treatment capacity by the photocatalytic oxidation (PCO) method, this paper used formaldehyde (HCHO) as a contaminant to study the effect of combination of PCO with nonthermal plasma technology (NTP) on the removal of HCHO. The experimental results show that HCHO removal is more effective with line-to-plate electrode discharge reactor; the HCHO removal and the reaction rate can be enhanced and the amount of air that needs to be cleaned can be improved. Meanwhile, the results show that there is the synergistic effect on the indoor air purification by the combination of PCO with NTP.

Doped and undoped anatase-based plates obtained from paper templates for photocatalytic oxidation of NO

2016 ◽  
Vol 42 (10) ◽  
pp. 12074-12083 ◽  
Author(s):  
Siara Silvestri ◽  
Bruno Szpoganicz ◽  
Juliana Schultz ◽  
Antonio S. Mangrich ◽  
Dachamir Hotza ◽  
...  
Keyword(s):  
Photocatalytic Oxidation ◽  
Oxidation Of No

scholarly journals Evaluation of a Combined Ultraviolet Photocatalytic Oxidation(UVPCO)/Chemisorbent Air Cleaner for Indoor Air Applications

2007 ◽  
Author(s):  
Alfred T. Hodgson ◽  
Hugo Destaillats ◽  
Toshifumi Hotchi ◽  
William J. Fisk
Keyword(s):  
Indoor Air ◽  
Photocatalytic Oxidation ◽  
Air Cleaner

Taming NO oxidation efficiency by γ-MnO2 morphology regulation

2020 ◽  
Vol 10 (17) ◽  
pp. 5996-6005
Author(s):  
Lei Chen ◽  
Jinping Zhang ◽  
Yuxin Li ◽  
Xiaomei Wu ◽  
Zaoxiao Zhang ◽  
...  
Keyword(s):  
Nitric Oxide ◽  
Fossil Fuels ◽  
No Oxidation ◽  
Global Concern ◽  
Oxidation Efficiency ◽  
Oxidation Of No

Nitric oxide (NO) emitted from the combustion of fossil fuels has drawn global concern, and the oxidation of NO contributes greatly to the DeNOx process.

The inhibition effect and deactivation mechanism of H2O and SO2 on selective catalytic oxidation of NO over the Mn–Ca–Ox–(CO3)y catalyst

2019 ◽  
Vol 43 (48) ◽  
pp. 19279-19285 ◽  
Author(s):  
Chi Wang ◽  
Ruiyuan Zhang ◽  
Yishan Zhang ◽  
Ping Ning ◽  
Xin Song ◽  
...  
Keyword(s):  
Particle Size ◽  
Catalytic Oxidation ◽  
No Oxidation ◽  
Inhibition Effect ◽  
Selective Catalytic Oxidation ◽  
Oxidation Of No ◽  
Deactivation Mechanism

H2O and SO2 had an inhibition effect on NO oxidation. SO2 increased the particle size of the catalyst. H2O decreased the particle size of the catalyst.

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