Porous crumpled graphene with improved specific surface area based on hydrophilic pre-reduction and its adsorption performance

2019 ◽  
Vol 54 (11) ◽  
pp. 8108-8120 ◽  
Author(s):  
Jinlin Zhao ◽  
Zhihong Tang ◽  
Yishu Qiu ◽  
Xiaolin Gao ◽  
Jia Wan ◽  
...  
Keyword(s):  
Specific Surface ◽  
Surface Area ◽  
Specific Surface Area ◽  
Adsorption Performance ◽  
Crumpled Graphene

Effect of ACF Properties on the Electric Adsorption Performance of the ACF Electrode

2012 ◽  
Vol 209-211 ◽  
pp. 1990-1994 ◽  
Author(s):  
Qin Zhang ◽  
Zhao Hui Zhang ◽  
Liang Wang ◽  
Zi Long Zhang ◽  
Xing Fei Guo
Keyword(s):  
Activated Carbon ◽  
Carbon Fiber ◽  
Specific Surface ◽  
Surface Area ◽  
Specific Surface Area ◽  
Activated Carbon Fiber ◽  
Adsorption Performance ◽  
Carbon Fiber Cloth ◽  
Activated Carbon Fiber Cloth ◽  
The Relationship

The properties of four different activated carbon fiber cloth (ACF), such as specific surface area, pore volumes and pore size distribution, were evaluated. The relationship between ACF properties and its electrosorption performance was analyzed. The experimental results show that pore structure has more influence on the performance of ACF electrode than that of specific surface area for ACF material. More abundant mesopores and shallower pore channels for ACF is favorable to improve the specific capacitance and electrosorption capacity of ions.

The construction of porous chitosan microspheres with high specific surface area by using agarose as the pore-forming agent and further functionalized application in bioseparation

2019 ◽  
Vol 7 (36) ◽  
pp. 5510-5519 ◽  
Author(s):  
Liangzhi Qiao ◽  
Liangshen Zhao ◽  
Chao Liang ◽  
Kaifeng Du
Keyword(s):  
Specific Surface ◽  
Protein Adsorption ◽  
Surface Area ◽  
Specific Surface Area ◽  
Protein Separation ◽  
High Specific Surface Area ◽  
Synthetic Route ◽  
Chitosan Microspheres ◽  
Adsorption Performance ◽  
Porous Chitosan

Adsorbents with synchronously high protein adsorption performance and a facile synthetic route are highly desired in protein separation.

Study on Microstructural Properties of PAN/MnO2 Nanofibers via Electrospinning Method

2015 ◽  
Vol 752-753 ◽  
pp. 113-118
Author(s):  
Norhaniza Yusof ◽  
Ieqmal Emeer Affandi ◽  
Norfadhilatuladha Abdullah ◽  
Ahmad Fauzi Ismail ◽  
Juhana Jaafar
Keyword(s):  
Specific Surface ◽  
Polymer Solution ◽  
Surface Area ◽  
Specific Surface Area ◽  
Micropore Volume ◽  
Bet Surface Area ◽  
Microstructural Properties ◽  
Adsorption Performance ◽  
Electrospinning Method ◽  
Scanning Electron

This paper reported the production of precursor PAN/MnO2 nanofibers via electrospinning method and studying its microstructural properties. The nanofibers were prepared by electrospun the polymer solution of polyacrylonitrile (PAN) and Manganese Oxide (MnO2) in, N, N-Dimethylformamide as its solvent. The factors considered in this study were polymer PAN/ MnO2 concentration which will significantly affect the specific surface area, nanofibers morphology, micropore volume and diameter of the nanofibers. The nanofibers were characterized using Scanning Electron Microscopy (SEM), Brunauer Emmett and Teller (BET) surface area, and Fourier Transmission Infrared Spectroscopy (FTIR). The addition of MnO2 in polymer solution increased the specific surface area of the nanofibers up to 3.5 wt % which found to be its optimum loading. In conclusion, the precursor PAN/ MnO2 -based ACNF were successfully produced with the optimization of metal oxide loading resulting to nanofibers with higher specific surface area which will further increased its adsorption performance.

Influence of Oxide Doping on Co3O4-CeO2 for CO Oxidation

2011 ◽  
Vol 287-290 ◽  
pp. 1718-1722 ◽  
Author(s):  
Jian Xin Cai ◽  
Yi Hao Lv ◽  
Rong Bin Zhang ◽  
Lai Tao Luo
Keyword(s):  
Crystal Structure ◽  
Low Temperature ◽  
Specific Surface ◽  
Co Oxidation ◽  
Surface Area ◽  
Specific Surface Area ◽  
Catalytic Properties ◽  
Co Adsorption ◽  
Adsorption Properties ◽  
Adsorption Performance

Ce0.7M0.3CoOx catalysts were prepared by polyatomic alcohol method. The crystal structure, reduction and adsorption properties, and specific surface were investigated by XRD, TPR, TPD, BET, respectively. The results show that catalysts doped with different oxides can make great effects on the catalytic properties of the Co3O4-CeO2. The interaction between doping oxides (SrO, NiO, La2O3, ZrO2, Nd2O3) and Co3O4-CeO2 is contributed to the change of the reduction and adsorption performance, and specific surface area of the catalysts. SrO doping can promote CeO2 reduction, CO adsorption and low-temperature oxidative activity of the catalysts. The conversion of CO can reach 100% over the Ce0.7Sr0.3CoOx at 120 °C temperature.

scholarly journals Synthesis and Characteristics of Double-Shell Mesoporous Hollow Silica Nanomaterials to Improve CO2 Adsorption Performance

Micromachines ◽  
2021 ◽  
Vol 12 (11) ◽  
pp. 1424
Author(s):  
Jong-tak Lee ◽  
Jae-Young Bae
Keyword(s):  
Carbon Dioxide ◽  
Specific Surface ◽  
Surface Area ◽  
Specific Surface Area ◽  
Pore Volume ◽  
Core Material ◽  
Carbon Dioxide Adsorption ◽  
Hollow Silica ◽  
Adsorption Performance ◽  
Amine Groups

To improve the adsorption performance of carbon dioxide, which is considered the main culprit of greenhouse gases, the specific surface area and high pore volume of the adsorbing material should be considered. For a porous material, the performance of carbon dioxide adsorption is determined by the amine groups supporting capacity; the larger the pore volume, the greater the capacity to support the amine groups. In this study, a double-shell mesoporous hollow silica nanomaterial with excellent pore volume and therefore increased amine support capacity was synthesized. A core–shell structure capable of having a hollow shape was synthesized using polystyrene as a core material, and a double-shell mesoporous shape was synthesized by sequentially using two types of surfactants. The synthesized material was subjected to a sintering process of 600 degrees, and the N2 sorption analysis confirmed a specific surface area of 690 m2/g and a pore volume of 1.012 cm3/g. Thereafter, the amine compound was impregnated into the silica nanomaterial, and then, a carbon dioxide adsorption experiment was conducted, which confirmed that compared to the mesoporous hollow silica nanomaterial synthesized as a single shell, the adsorption performance was improved by about 1.36 times.

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