High-Efficiency and Ground-State Atomic Oxygen-Dominant Photodegradation of Carbamazepine by Coupling Chlorine and g-C3N4

ABSTRACTA high-density non-equilibrium atmospheric pressure plasma (NEAPP) applied for inactivating fungal spores of P. digitatum is introduced as an environmentally safe and rapid-inactivation method. The contributions of ozone, ultra violet (UV) radiation and ground-state atomic oxygen in the NEAPP on the inactivation of the spores are evaluated using colony count method.The absolute densities of ozone were measured by using ultraviolet absorption spectroscopy. The ozone density increased from 2 to 8 ppm with an increase in the distance from the plasma source, while the inactivation rate decreased. The inactivation rate of plasma was evaluated to be thousand times higher than that of an ozone generator using the integrated number density of ozone. In addition, it was clarified that the contribution of UV radiation to inactivation was not dominant for P. digitatum inactivation by NEAPP by filtering the active species using quartz plate. From these results, we can speculate that the inactivation efficiency of reactive oxygen species (ROS) will be larger than those of others.In order to investigate the effect of ground-state atomic oxygen as one of ROS, the inactivation of P. digitatum spores using an oxygen radical source that employs a high-density atmospheric-pressure O2/Ar plasma. The absolute O density was measured to be 1.4×1014 and 1.5×1015 cm–3 using vacuum ultra violet absorption spectroscopy (VUVAS) using a microdischarge hollow cathode lamp. The behaviors of the O densities as a function of O2/(Ar+O2) mixture flow rate ratio correspond to that of the inactivation rate. This result indicates that ground-state atomic oxygen is concluded to be the dominant species that causes inactivation.

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Investigations of the Reactions of Triethoxychlorosilane, Tetraethoxysilane, Triethoxysilane, Trichlorosilane and Trifluorosilane with Atomic Oxygen in the Electronic Ground State [O(3P)]

Zeitschrift für Physikalische Chemie ◽

10.1524/zpch.1995.190.part_2.167 ◽

1995 ◽

Vol 190 (Part_2) ◽

pp. 167-181

Author(s):

C. Buchta ◽

H. Gg. Wagner ◽

W. Wittchow

Keyword(s):

Ground State ◽

Atomic Oxygen ◽

Electronic Ground State ◽

Electronic Ground

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Accurate and Efficient Numerical Methods for Computing Ground States and Dynamics of Dipolar Bose-Einstein Condensates via the Nonuniform FFT

Communications in Computational Physics ◽

10.4208/cicp.scpde14.37s ◽

2016 ◽

Vol 19 (5) ◽

pp. 1141-1166 ◽

Cited By ~ 15

Author(s):

Weizhu Bao ◽

Qinglin Tang ◽

Yong Zhang

Keyword(s):

Numerical Methods ◽

Ground State ◽

High Efficiency ◽

Three Dimensional ◽

Ground States ◽

Dipole Interaction ◽

Polar Coordinates ◽

Pitaevskii Equation ◽

Nonuniform Fft ◽

Bose Einstein

AbstractWe propose efficient and accurate numerical methods for computing the ground state and dynamics of the dipolar Bose-Einstein condensates utilising a newly developed dipole-dipole interaction (DDI) solver that is implemented with the non-uniform fast Fourier transform (NUFFT) algorithm. We begin with the three-dimensional (3D) Gross-Pitaevskii equation (GPE) with a DDI term and present the corresponding two-dimensional (2D) model under a strongly anisotropic confining potential. Different from existing methods, the NUFFT based DDI solver removes the singularity by adopting the spherical/polar coordinates in the Fourier space in 3D/2D, respectively, thus it can achieve spectral accuracy in space and simultaneously maintain high efficiency by making full use of FFT and NUFFT whenever it is necessary and/or needed. Then, we incorporate this solver into existing successful methods for computing the ground state and dynamics of GPE with a DDI for dipolar BEC. Extensive numerical comparisons with existing methods are carried out for computing the DDI, ground states and dynamics of the dipolar BEC. Numerical results show that our new methods outperform existing methods in terms of both accuracy and efficiency.

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Quantitative measurements of ground state atomic oxygen in atmospheric pressure surface micro-discharge array

Journal of Physics D Applied Physics ◽

10.1088/1361-6463/aa6c44 ◽

2017 ◽

Vol 50 (21) ◽

pp. 215201 ◽

Cited By ~ 1

Author(s):

D Li ◽

M G Kong ◽

N Britun ◽

R Snyders ◽

C Leys ◽

...

Keyword(s):

Ground State ◽

Atmospheric Pressure ◽

Atomic Oxygen ◽

Pressure Surface ◽

Quantitative Measurements

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High-Yield Synthesis of Long Silver Nanowires via Chromic Chloride and a Stable Reaction Environment

Journal of Nanomaterials ◽

10.1155/2019/8646385 ◽

2019 ◽

Vol 2019 ◽

pp. 1-8 ◽

Cited By ~ 1

Author(s):

Bosheng Zhang ◽

Rui Dang ◽

Qigao Cao ◽

Panchao Zhao ◽

Kunkun Chen ◽

...

Keyword(s):

Electrode Potential ◽

Atomic Oxygen ◽

High Efficiency ◽

Silver Nanowires ◽

High Yield ◽

Synthesis Methods ◽

Standard Electrode Potential ◽

Oxidative Etching ◽

Lower Standard ◽

Chromic Chloride

The search for suitable synthesis methods and parameters capable of controlling the length, diameter, and yield of silver nanowires (AgNWs) is still an emerging strategy today. Therefore, a method for high-yield synthesis of long AgNWs via chromic chloride and a stable reaction environment was proposed. The results show that Cr3+ could restore the adsorbed atomic oxygen quickly and provide a high efficiency in the prevention of the oxidative etching, for the ion of Cr2+ oxidized to Cr3+ has a lower standard electrode potential, and a more stable reaction environment provided by the coupling method could avoid disturbing the growth of the {111} reactive sites of the wires; then, the yield and length of the AgNWs were improved. The length of the AgNWs was over 75 μm and even 160 μm; the yield of the AgNWs was over 90%, which provides the referable basis for the synthesis of ultralong AgNWs.

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