Racemic Porous Organic Cage Crystal with Selective Gas Adsorption Behaviors

2022 ◽  
Author(s):  
wei yang ◽  
Nana Sun ◽  
Xinxin Wang ◽  
Baoqiu Yu ◽  
Hailong Wang
Keyword(s):  
Gas Adsorption ◽  
Adsorption Behaviors

In situ growth and optical gas adsorption performance of Zn(ii) metal–organic framework membranes at room temperature

The Analyst ◽  
2019 ◽  
Vol 144 (16) ◽  
pp. 4887-4896 ◽  
Author(s):  
Mariyemu Tuergong ◽  
Patima Nizamidin ◽  
Abliz Yimit ◽  
Rena Simayi
Keyword(s):  
Room Temperature ◽  
Gas Adsorption ◽  
Uv Light ◽  
Metal Organic Framework ◽  
Adsorption Behaviors ◽  
Uv Light Irradiation ◽  
Unit Surface ◽  
Metal Organic ◽  
First Time

The optical gas adsorption behaviors of [Zn2(bdc)2(dpNDI)]n membranes were studied for the first time. Under UV light irradiation, they exhibited a greater adsorption response to xylene gas with adsorption capacity of 6.46 μg cm−2 per unit surface.

scholarly journals First-Principles Investigation of the Adsorption Behaviors of CH2O on BN, AlN, GaN, InN, BP, and P Monolayers

Materials ◽  
2019 ◽  
Vol 12 (4) ◽  
pp. 676 ◽  
Author(s):  
Chuang Feng ◽  
Hongbo Qin ◽  
Daoguo Yang ◽  
Guoqi Zhang
Keyword(s):  
Charge Transfer ◽  
First Principles ◽  
Gas Adsorption ◽  
Indium Nitride ◽  
Single Layer ◽  
Boron Phosphide ◽  
Adsorption Behaviors ◽  
Gas Molecule ◽  
Adsorption Energies ◽  
Adsorption Systems

CH2O is a common toxic gas molecule that can cause asthma and dermatitis in humans. In this study the adsorption behaviors of the CH2O adsorbed on the boron nitride (BN), aluminum nitride (AlN), gallium nitride (GaN), indium nitride (InN), boron phosphide (BP), and phosphorus (P) monolayers were investigated using the first-principles method, and potential materials that could be used for detecting CH2O were identified. The gas adsorption energies, charge transfers and electronic properties of the gas adsorption systems have been calculated to study the gas adsorption behaviors of CH2O on these single-layer materials. The electronic characteristics of these materials, except for the BP monolayer, were observed to change after CH2O adsorption. For CH2O on the BN, GaN, BP, and P surfaces, the gas adsorption behaviors were considered to follow a physical trend, whereas CH2O was chemically adsorbed on the AlN and InN monolayers. Given their large gas adsorption energies and high charge transfers, the AlN, GaN, and InN monolayers are potential materials for CH2O detection using the charge transfer mechanism.

Fluid distribution and gas adsorption behaviors in over-mature shales in southern China

2019 ◽  
Vol 109 ◽  
pp. 223-232 ◽  
Author(s):  
Hao Xu ◽  
Wen Zhou ◽  
Qinhong Hu ◽  
Xianghua Xia ◽  
Cong Zhang ◽  
...  
Keyword(s):  
Gas Adsorption ◽  
Southern China ◽  
Fluid Distribution ◽  
Adsorption Behaviors

Temperature-tuned topologies and interpenetrations of two 3D porous copper(II)-organic frameworks and gas adsorption behaviors

2018 ◽  
Vol 471 ◽  
pp. 180-185 ◽  
Author(s):  
Gang Xiong ◽  
Yanan Wang ◽  
Baibei Zhao ◽  
Lixin You ◽  
Baoyi Ren ◽  
...  
Keyword(s):  
Gas Adsorption ◽  
Adsorption Behaviors ◽  
Porous Copper

Synthesis and Characteristic Properties of Crosslinked Chitosan with Epichlorohydrin for Nitrate Removal from Water

2021 ◽  
Vol 21 (9) ◽  
pp. 4974-4979
Author(s):  
Seung Jae Lee ◽  
Kyung-Jun Hwang ◽  
Yongjoon Youn ◽  
Sang-Chai Kim ◽  
Soon-Do Yoon ◽  
...  
Keyword(s):  
Energy Distribution ◽  
Gas Adsorption ◽  
Nitrate Removal ◽  
Distribution Models ◽  
Chitosan Beads ◽  
Homogeneous Surface ◽  
Adsorption Behaviors ◽  
Isotherm Adsorption ◽  
Equilibrium And Kinetics ◽  
Nitrate Adsorption

In this study, we prepared chitosan beads cross-linked with epichlorohydrin (CB-ECH) to improve the removal of nitrate in groundwater. It was confirmed that CB-ECH exhibited higher thermal stability and well-developed nano-pores compared to the pure chitosan beads (CB) by the thermogravimetric analyzer, nitrogen gas adsorption and desorption isotherm, and field emission scanning microscopy analysis. The CB-ECH showed a higher nitrate adsorption amount than the pure CB. Nitrate adsorption behaviors of CB-ECH were further investigated using adsorption isotherm, adsorption kinetics, adsorption energy distribution, and Gibbs free energy distribution models. The adsorption equilibrium and kinetics of nitrate ion on CB-ECH were well explained by the Sips isotherm and homogeneous surface diffusion model, respectively. It was also found from the AED analysis that the CB-ECH represent the heterogeneous adsorption behaviors for nitrate.

scholarly journals Gas Adsorption Investigation on SiGe Monolayer: A First-Principle Calculation

Sensors ◽  
2020 ◽  
Vol 20 (10) ◽  
pp. 2879
Author(s):  
Xiang Sun ◽  
Yuzheng Guo ◽  
Yan Zhao ◽  
Sheng Liu ◽  
Hui Li
Keyword(s):  
Gas Adsorption ◽  
Gas Sensing ◽  
First Principles Calculation ◽  
First Principle Calculation ◽  
Adsorption Sites ◽  
Sensing Applications ◽  
Adsorption Behaviors ◽  
Sensing Material ◽  
Nh3 Adsorption ◽  
No2 Adsorption

The gas adsorption behaviors of CO, CO2, SO2, NO2, NO, NH3, H2, H2O, and O2 on SiGe monolayer are studied using the first-principles calculation method. Three special adsorption sites and different gas molecule orientations are considered. Based on adsorption energy, band gap, charge transfer, and the electron localization function, the appropriate physical adsorptions of SO2, NO, NH3, and O2 are confirmed. These gases possess excellent adsorption properties that demonstrate the obvious sensitiveness of SiGe monolayer to these gases. Moreover, SiGe may be used as a sensing material for some of them. NO2 adsorption in different adsorption sites can be identified as chemical adsorption. Besides, the external electric field can effectively modify the adsorption strength. The range of 0 ~ − 2 V/nm can create a desorption effect when NH3 adsorbs at the Ge site. The NH3 adsorption models on Ge site are chosen to investigate the properties of the I-V curve. Our theoretical results indicate that SiGe monolayer is a promising candidate for gas sensing applications.

Differences in NH3 gas adsorption behaviors of metal-hexacyanoferrate nanoparticles (M [FeII(CN)6] ·zH2O:M = In3+, Fe3+, and Mn2+)

2019 ◽  
Vol 270 ◽  
pp. 112-117 ◽  
Author(s):  
Supone Manakasettharn ◽  
Akira Takahashi ◽  
Tohru Kawamoto ◽  
Keiko Noda ◽  
Yutaka Sugiyama ◽  
...  
Keyword(s):  
Gas Adsorption ◽  
Adsorption Behaviors ◽  
Metal Hexacyanoferrate

Preparation and characterisation of vanadium pentoxide supported rhodium catalyst

1988 ◽  
Vol 46 ◽  
pp. 946-947
Author(s):  
A. Legrouri
Keyword(s):  
Aqueous Solution ◽  
Thermal Decomposition ◽  
Physicochemical Properties ◽  
Surface Area ◽  
Vanadium Pentoxide ◽  
High Purity ◽  
Gas Adsorption ◽  
Rhodium Catalyst ◽  
Optical Methods ◽  
Reducible Oxides

The industrial importance of metal catalysts supported on reducible oxides has stimulated considerable interest during the last few years. This presentation reports on the study of the physicochemical properties of metallic rhodium supported on vanadium pentoxide (Rh/V2O5). Electron optical methods, in conjunction with other techniques, were used to characterise the catalyst before its use in the hydrogenolysis of butane; a reaction for which Rh metal is known to be among the most active catalysts.V2O5 powder was prepared by thermal decomposition of high purity ammonium metavanadate in air at 400 °C for 2 hours. Previous studies of the microstructure of this compound, by HREM, SEM and gas adsorption, showed it to be non— porous with a very low surface area of 6m2/g3. The metal loading of the catalyst used was lwt%Rh on V2Q5. It was prepared by wet impregnating the support with an aqueous solution of RhCI3.3H2O.

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