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Merging polymers of intrinsic microporosity and porous carbon-based zinc oxide composites in novel mixed matrix membranes for efficient gas separation

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Green energy & Environment 2025年第1期10卷 203-213页

作者： Muning Chen Jiemei Zhou Jing Ma Weigang Zheng Guanying Dong Xin Li Zhihong Tian Yatao Zhang Jing Wang Yong Wang School of Chemical Engineering Zhengzhou UniversityZhengzhou450001HenanChina State Key Laboratory of Materials-Oriented Chemical Engineering and College of Chemical Engineering Nanjing Tech UniversityNanjing211816JiangsuChina Singapore Membrane Technology Centre Nanyang Environment and Water Research InstituteNanyang Technological UniversitySingapore637141Singapore Engineering Research Center for Nanomaterials Henan UniversityKaifeng475004HenanChina State Key Laboratory of Coking Coal Resources Green Exploitation Zhengzhou UniversityZhengzhou 450001China School of energy and Environment Southeast UniversityNanjing210096JiangsuChina

Mixed matrix membranes(MMMs)have demonstrated significant promise in energy-intensive gas separations by amalgamating the unique properties of fillers with the facile processability of ***,achieving a simultaneous enhancement of permeability and selectivity remains a formidable challenge,due to the difficulty of achieving an optimal match between polymers and *** this study,we incorporate a porous carbon-based zinc oxide composite(C@ZnO)into high-permeability polymers of intrinsic microporosity(PIMs)to fabricate *** dipole–dipole interaction between C@ZnO and PIMs ensures their exceptional compatibility,mitigating the formation of non-selective voids in the resulting ***,C@ZnO with abundant interconnected pores can provide additional low-resistance pathways for gas transport in *** a result,the CO_(2) permeability of the optimized C@ZnO/PIM-1 MMMs is elevated to 13,215 barrer,while the CO_(2)/N_(2) and CO_(2)/CH4 selectivity reached 21.5 and 14.4,respectively,substantially surpassing the 2008 Robeson upper ***,molecular simulation results further corroborate that the augmented membrane gas selectivity is attributed to the superior CO_(2) affinity of C@*** summary,we believe that this work not only expands the application of MMMs for gas separation but also heralds a paradigm shift in the application of porous carbon materials.

关键词： Mixed matrix membranes Polymers of intrinsic microporosity CO_(2)separation Porous carbon materials

Experimental study of temperature dependence of single-event upset in SRAMs

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Nuclear Science and Techniques 2016年第1期27卷 93-97页

作者： Li Cai Gang Guo Jian-Cheng Liu Hui Fan Shu-Ting Shi Hui Wang Gui-Liang Wang Dong-Jun Shen Ning Hui An-Lin He china institute of atomic energy Beijing 102413China

We report on the temperature dependence of single-event upsets in the 215–353 K range in a 4M commercial SRAM manufactured in a 0.15-lm CMOS process,utilizing thin film transistors. The experimental results show that temperature influences the SEU cross section on the rising portion of the cross-sectional curve(such as the chlorine ion incident). SEU cross section increases 257 %when the temperature increases from 215 to 353 K. One of the possible reasons for this is that it is due to the variation in upset voltage induced by changing temperature.

关键词：温度依赖性单粒子翻转 SRAM 实验截面曲线薄膜晶体管工艺制造 CMOS

Mapping Nuclear Decay to a Complex Network

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Communications in Theoretical Physics 2012年第3期57卷 490-492页

作者：李永方锦清刘强 china institute of atomic energy

Nuclear decay is investigated by the view of network science and the relationship of nuclear decay among different radionuclide can be mapped to a network topology *** network includes 1410 nodes and 1275 *** average degree of the network of nuclear decay is about 1.8,the cumulative degree distribution still meets the typical power-law distribution,and the corresponding exponent is about *** considering their dynamic behavior,the fitting parameters of the nuclear decay network are obtained according to the LUHNM theory proposed by our group *** cumulated degree distributions of the nuclear decay network match *** idea and method may provide a new way to study some other problems of nuclear physics.

关键词： nuclear decay complex network LUHNM

Prompt neutron multiplicity distribution for ^(235)U(n,f) at incident energies up to 20 MeV

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Chinese Physics C 2011年第4期35卷 344-348页

作者：陈永静刘廷进 china institute of atomic energy

For the n＋235U fission reaction, the total excitation energy partition of the fission fragments, the average neutron kinetic energy ε （A） and the total average energies Eˉγ（A） removed by γ rays as a function of fission fragment mass are given at incident energies up to 20 MeV. The prompt neutron multiplicity as a function of the fragment mass, ν（A）, for neutron-induced fission of 235U at different incident neutron energies is calculated. The calculated results are checked with the total average prompt neutron multiplicities νˉ and compared with the experimental and evaluated data. Some prompt neutron and γ emission mechanisms are discussed.

关键词： fission fragment excitation energy partition prompt neutron multiplicity

First measurement of strong interaction between antiprotons

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National Science Review 2016年第2期3卷 154-155页

作者： Huan-Qiao Zhang china institute of atomic energy

Our world is made of matter,but matter has a counterpart called antimatter,in which the subatomic particles(protons and electrons)of antimatter have charges opposite to those of ordinary *** an ordinary matter,the protons are positively charged,and the electrons carry negative *** antimatter,the antiprotons are negatively charged,while the antielectrons(called positrons)are positively *** antimatter and matter ever meet,they annihilate in a flash of light.

关键词： First measurement of strong interaction between antiprotons

Photon discrimination simulation with the PCA method

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Chinese Physics C 2010年第10期34卷 1632-1635页

作者：周静刘志毅孟秋英周书华 china institute of atomic energy

The shower shape of n, n^-, p, p^-, K^＋, π^＋ and photons, generated by JPCIAE code for 5.5 TeV/A ^208pb＋^208pb collisions, incident on the ALICE photon spectrometer （PHOS）, is analyzed with the principal component analysis （PCA） method. The efficiency dependence of purity for the photon discrimination is simulated for the deposited energy ranges 0.5-2 GeV, 2-10 GeV, 10-50 GeV and 50-100 GeV. The result shows that in the energy range of 0.5 to 100 GeV, the efficiency of the photon identification can reach 90% with purity of 90%.

关键词： photon discrimination PCA ALICE PHOS

Description of the shape evolution in the yrast states of ^(186)Pt

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Chinese Physics C 2014年第2期38卷 10-14页

作者：贺创业吴晓光郑云李聪博方忻 china institute of atomic energy

^186Pt was tested in the framework of IBM-1 and the X（3） model. The results show that ^186Pt is located close to the shape phase transition point, but the B（E2） values little agree with the X（3） model. The shape evolution in the yrast states of186Pt is also discussed in detail. TRS calculation exhibits a flat bottomed potential at low spin states, but a relatively deep minimum at high spin states. It suggests that a shape evolution from vibrational mode to rotational mode happens in ^186Pt. The result is in agreement with the E-GOS calculation.

关键词： IBM total Routhian surface B(E2) X(3) model

Environmental effects on nuclear decay rates

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Chinese Physics C 2011年第5期35卷 449-452页

作者：周书华 china institute of atomic energy

The possible change of nuclear decay rates in different environments has long been an interesting topic due to its importance not only in nuclear physics but also in astrophysics, geological dating, condensed matter p... 详细信息

关键词： decay rate environmental effect radioactive nuclide

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An electrostatic deflector for a fusion reaction

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Chinese Physics C 2010年第10期34卷 1628-1631页

作者：张焕乔林承键杨峰贾会明周平安广朋张春雷徐新星 china institute of atomic energy

An electrostatic deflector for separating the fusion evaporation residues from the beam-like products in heavy ion reactions was installed. The evaporation residue separation and identification with the electrostatic deflector setup was tested with the reaction ^32S＋^96Zr at several energies. The fusion evaporation residues and the beam-like particles were well separated after the electrical separation and the experimental fusion cross section obtained from the angular distribution is in good agreement with the calculated value well above the Coulomb barrier. This confirms the reliability of the setup.

关键词： electrical rigidity fusion evaporation residues beam-like products angular distribution