Topochemical transformation of low-energy crystal facets to high-energy facets: a case from Bi2O2CO3 {001} facets to β-Bi2O3 {001} facets with improved photocatalytic oxidation of NO

CrystEngComm ◽  
2015 ◽  
Vol 17 (32) ◽  
pp. 6098-6102 ◽  
Author(s):  
Fang Wang ◽  
Ziyan Zhao ◽  
Kunhao Zhang ◽  
Fan Dong ◽  
Ying Zhou
Keyword(s):  
Photocatalytic Oxidation ◽  
High Energy ◽  
Low Energy ◽  
Oxidation Of No ◽  
Thermal Stable

Photocatalytically active β-Bi2O3 nanosheets exposed with active {001} facets were facilely prepared through annealing Bi2O2CO3 with thermal stable {001} facets.

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.

Low energy vs. high energy depositional settings and related sedimentary bodies in early Senenian rudist bearing carbonate shelves (central-southern Italy)

2001 ◽  
Vol 28 (1) ◽  
pp. 37-40 ◽  
Author(s):  
Gabriele Carannante ◽  
A. Laviano ◽  
D. Ruberti ◽  
Lucia Simone ◽  
G. Sirna ◽  
...  
Keyword(s):  
Southern Italy ◽  
High Energy ◽  
Low Energy ◽  
Depositional Settings

Transportation: Fuel Energies

2017 ◽  
Author(s):  
Peter Rez
Keyword(s):  
Energy Density ◽  
Fossil Fuels ◽  
High Energy ◽  
Ease Of Use ◽  
Low Energy ◽  
High Energy Density ◽  
Nuclear Fuels ◽  
Liquid Hydrocarbons ◽  
Transportation Fuel ◽  
Journey Time

Transportation efficiency can be measured in terms of the energy needed to move a person or a tonne of freight over a given distance. For passengers, journey time is important, so an equally useful measure is the product of the energy used and the time taken for the journey. Transportation requires storage of energy. Rechargeable systems such as batteries have very low energy densities as compared to fossil fuels. The highest energy densities come from nuclear fuels, although, because of shielding requirements, these are not practical for most forms of transportation. Liquid hydrocarbons represent a nice compromise between high energy density and ease of use.

scholarly journals Low-Energy Electron Damage to Condensed-Phase DNA and Its Constituents

2021 ◽  
Vol 22 (15) ◽  
pp. 7879
Author(s):  
Yingxia Gao ◽  
Yi Zheng ◽  
Léon Sanche
Keyword(s):  
Condensed Phase ◽  
Genetic Material ◽  
High Energy ◽  
Dna Lesions ◽  
Low Energy ◽  
Experimental Investigations ◽  
Experimental Conditions ◽  
Strand Breaks ◽  
Sequence Of Events ◽  
Wide Range

The complex physical and chemical reactions between the large number of low-energy (0–30 eV) electrons (LEEs) released by high energy radiation interacting with genetic material can lead to the formation of various DNA lesions such as crosslinks, single strand breaks, base modifications, and cleavage, as well as double strand breaks and other cluster damages. When crosslinks and cluster damages cannot be repaired by the cell, they can cause genetic loss of information, mutations, apoptosis, and promote genomic instability. Through the efforts of many research groups in the past two decades, the study of the interaction between LEEs and DNA under different experimental conditions has unveiled some of the main mechanisms responsible for these damages. In the present review, we focus on experimental investigations in the condensed phase that range from fundamental DNA constituents to oligonucleotides, synthetic duplex DNA, and bacterial (i.e., plasmid) DNA. These targets were irradiated either with LEEs from a monoenergetic-electron or photoelectron source, as sub-monolayer, monolayer, or multilayer films and within clusters or water solutions. Each type of experiment is briefly described, and the observed DNA damages are reported, along with the proposed mechanisms. Defining the role of LEEs within the sequence of events leading to radiobiological lesions contributes to our understanding of the action of radiation on living organisms, over a wide range of initial radiation energies. Applications of the interaction of LEEs with DNA to radiotherapy are briefly summarized.

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.

Fabrication of the narrow size nano curcuminoids emulsion by combining phase inversion temperature and ultrasonication: preparation and bioactivity

2021 ◽  
Author(s):  
Quang Hieu Tran ◽  
Thuy Thanh Ho ◽  
Tu Thanh Nguyen
Keyword(s):  
Energy Method ◽  
Phase Inversion ◽  
Curcuma Longa ◽  
High Energy ◽  
Low Energy ◽  
Inversion Temperature ◽  
Comprehensive Study ◽  
Phase Inversion Temperature

A comprehensive study from Curcuma longa to powder nano curcuminoids has been carried out. Combining of both low energy method (Phase Inversion Temperature) and high-energy method (Ultrasonication), a series of...

scholarly journals The low-energy effective theory of axions and ALPs

2021 ◽  
Vol 2021 (4) ◽  
Author(s):  
Martin Bauer ◽  
Matthias Neubert ◽  
Sophie Renner ◽  
Marvin Schnubel ◽  
Andrea Thamm
Keyword(s):  
High Energy ◽  
New Physics ◽  
Mass Scale ◽  
Low Energy ◽  
Effective Theory ◽  
Loop Order ◽  
Flavor Changing ◽  
Effective Lagrangian ◽  
Anomalous Dimensions ◽  
Pseudoscalar Mesons

Abstract Axions and axion-like particles (ALPs) are well-motivated low-energy relics of high-energy extensions of the Standard Model, which interact with the known particles through higher-dimensional operators suppressed by the mass scale Λ of the new-physics sector. Starting from the most general dimension-5 interactions, we discuss in detail the evolution of the ALP couplings from the new-physics scale to energies at and below the scale of electroweak symmetry breaking. We derive the relevant anomalous dimensions at two-loop order in gauge couplings and one-loop order in Yukawa interactions, carefully considering the treatment of a redundant operator involving an ALP coupling to the Higgs current. We account for one-loop (and partially two-loop) matching contributions at the weak scale, including in particular flavor-changing effects. The relations between different equivalent forms of the effective Lagrangian are discussed in detail. We also construct the effective chiral Lagrangian for an ALP interacting with photons and light pseudoscalar mesons, pointing out important differences with the corresponding Lagrangian for the QCD axion.

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
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