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Efficient P3HT：PC61BM Solar Cells Employing 1,2,4-Trichlorobenzene as the Processing Additives

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Chinese Journal of Polymer Science 2017年第2期35卷 302-308页

作者： Wei-chao Chen Man-jun xiao 杨春鹏 Lin-rui duan 阳仁强 Chinese Academy of Sciences Key Laboratory of Bio-based Materials Qingdao Institute of Bioenergy and Bioprocess Technology Chinese Academy of Sciences Qingdao 266101 China College of Textiles & Clothing Qingdao University Qingdao 266071 China

The efficiency of the poly（3-hexylthiophene）（P3HT） and [6,6]-phenyl C61-butyric acid methyl ester （PC61BM） based organic solar cells was enhanced by using 1,2,4-trichlorobenzene （TCB） as a processing additive to control the blend morphology. The addition of TCB improved the arrangement of P3HT which resulted in good phase separated blend films. Correspondingly, the optimized solar cells showed a power conversion efficiency （PCE） of 4.17% with a fill factor （FF） of 0.69, which were higher than those of common thermal annealing devices （PCE 3.84%, FF 0.67）. The efficiency was further improved to 4.74% by thermal annealing at 150 ℃for 10 min with a higher FF of 0.74.

关键词： Organic solar cells Crystallinity Additive Morphology

Optimal linear attitude estimators via geometric analysis

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2011年第11期12卷 873-882页

作者： De-ren GONG xiao-wei SHAO Wei LI Deng-ping duan Institute of Aerospace Science ＆ Technology Shanghai Jiao Tong University Shanghai 200240 China

Three optimal linear attitude estimators are proposed for single-point real-time estimation of spacecraft attitude using a geometric approach. The final optimal attitude is represented by modified Rodrigues parameters （MRPs）. After introducing incidental right-hand orthogonal coordinates for each pair of measured values, three error vectors are obtained by the use of dot or/and cross products. Corresponding optimality criteria are rigorously quadratic and unconstrained, which do not coincide with Wahba＇s constrained criterion. The singularity, which occurs when the principal angle is close to n, can be easily avoided by one proper rotation. Numerical simulations show that the proposed three optimal linear estimators can provide a precision comparable with those complying with the Wahba optimality definition, and have faster computational speed than the famous quatemion estimator （QUEST）.

关键词： Linear attitude determination Geometric analysis Gibbs vector Singularity avoidance

Simultaneous measurement-device-independent continuous variable quantum key distribution with realistic detector compensation

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Frontiers of physics 2020年第3期15卷 1-12页

作者： xiao-Dong Wu Yi-Jun Wang duan Huang Ying Guo School of Automation Central South UniversityChangsha410083China School of Computer Science and Engineering Central South UniversityChangsha410083China

We propose a novel scheme for measurement-device-independent(MDI)continuous-variable quantum key distribution(CVQKD)by simultaneously conducting classical communication and QKD,which is called“simultaneous MDI-CVQKD”*** such protocol,each sender(Alice,Bob)can superimpose random numbers for QKD on classical information by taking advantage of the same weak coherent pulse and an untrusted third party(Charlie)decodes it by using the same coherent detectors,which could be appealing in practice due to that multiple purposes can be realized by employing only single communication *** is more,the proposed protocol is MDI,which is immune to all possible side-channel attacks on practical *** results illustrate that the simultaneous MDI-CVQKD protocol can secure against arbitrary collective *** addition,we employ phase-sensitive optical amplifiers to compensate the imperfection existing in practical *** this technology,even common practical detectors can be used for detection through choosing a suitable optical amplifier ***,we also take the finite-size effect into consideration and show that the whole raw keys can be taken advantage of to generate the final secret key instead of sacrificing part of them for parameter ***,an enhanced performance of the simultaneous MDI-CVQKD protocol can be obtained in finite-size regime.

关键词： measurement-device-independent continuous-variable quantum key distribution simultaneous realistic detector compensation

The Effect of Oxygen to Salen-Co Complexes for the Copolymerization of PO/C02

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Chinese Journal of Polymer Science 2020年第10期38卷 1124-1130,I0007页

作者： ran-Long duan Yan-Chuan Zhou Zhi-Qiang Sun Yue-Zhou Huang Xuan Pang Xue-Si Chen Key Llaboratory ofPolymer Eomaterials ChangchunIntitute of Apied ChemistyChinese Academy ofSciencesChangchun 130022 China University of Science and Technology of China Hefei 230026 China

A series of Salen-Co(Ⅱ)complexes were synthesized to study the effect of O2 on the catalytic performance of Salen-Co complexes for the copolymerization of PO/CO2 The Salen-Co(Ⅱ) complexes showed low activity on the cyclo addition of CO2 to PO with the aid of a cocatalyst such as PPNCI Unexpectedly,with the addition of O2 the activity of Salen-C(Ⅱ)complexes was obviously increased and 100%cylic carbonate was *** the pressure of O2 increased,the activity of the complex also *** the existence of 02 the activity of the complexes was influenced by their structures and the pressure of 02,and the camplexes with the conjugated structure showed higher *** structures of cocatalyst also played a crucial role as for the change of the activity By altering the electrophilit of Salen-Co(Ⅲ),O2 can also be used as cocatalyst for the copolymerization of PO/CO2。

关键词： Salen-cobalt Epoxides Carbon dioxide Copolymerization

Remediation of soil and groundwater contaminated with organic chemicals using stabilized nanoparticles: Lessons from the past two decades

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Frontiers of Environmental Science & Engineering 2020年第5期14卷 83-102页

作者： Zhengqing Cai xiao Zhao Jun duan Dongye Zhao Zhi Dang Zhang Lin National Engineering Lab for High-concentration Refractory Organic Wastewater East China University of Science and TechnologyShanghai 200237China Shanghai Institute of Pollution Control and Ecological Security Shanghai 200092China College of Water Resources&Civil Engineering China Agricultural UniversityBeijing 100083China Environmental Engineering Program Department of Civil EngineeringAuburn UniversityAuburnAL 36849USA School of Environment and Energy South China University of TechnologyGuangzhou 510006China

Due to improved soil deliverability and high reactivity,stabilized nanoparticles have been studied for nearly two decades for in situ remediation of soil and groundwater contaminated with organic *** large amounts of bench-and field-scale experimental data have demonstrated the potential of the innovative technology,extensive research results have also unveiled various merits and constraints associated different soil characteristics,types of nanoparticles and particle stabilization ***,this work aims to critically overview the fundamental principles on particle stabilization,and the evolution and some recent developments of stabilized nanoparticles for degradation of organic contaminants in soil and *** specific objectives are to:1)overview fundamental mechanisms in nanoparticle stabilization;2)summarize key applications of stabilized nanoparticles for in situ remediation of soil and groundwater contaminated by legacy and emerging organic chemicals;3)update the latest knowledge on the transport and fate of stabilized nanoparticles;4)examine the merits and constraints of stabilized nanoparticles in environmental remediation applications;and 5)identify the knowledge gaps and furore research needs pertaining to stabilized nanoparticles for remediation of contaminated soil and *** instructions of this invited special issue,this review is focused on contributions from our group(one of the pioneers in the subject field),which,however,is supplemented by important relevant works by *** knowledge gained is expected to further advance the science and technology in the environmental applications of stabilized nanoparticles.

关键词： Stabilized nanoparticle In-situ remediation Organic contaminant Soil remediation Groundwater Fate and transport

High efficiency hydrogen purification through P2C3 membrane:A theoretical study

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Chinese Physics B 2019年第12期28卷 389-392页

作者： Zhao-Qin Chu xiao Gu Xiang-Mei duan Department of Physics Ningbo UniversityNingbo 315211China Laboratory of Clean Energy Storage and Conversion Ningbo UniversityNingbo 315211China

It is critical to design an effective two-dimensional membrane for hydrogen purification from the mixed gas, due to its wide range of scientific and industrial applications. In this work, we investigate the hydrogen separation performance of P2C3 membranes by density functional theory and molecular dynamics simulations. The results show that the energy barrier of the H2 molecule through the P2C3 film is only 0.18 e V, while the energy barriers of the CO, N2, CO2, and CH4 molecules are 0.77 eV, 0.87 eV, 0.52 eV, and 1.75 eV, respectively. In addition, the P2C3 film has high H2 selectivity toward other gas molecules and high H2 permeability at room temperature. Under 6% tensile strain, 82% hydrogen molecules pass through the film with a H2 permeance of 2.22 × 107 gas permeance unit(GPU), while other molecules cannot across the membrane at all. Therefore, the P2C3 membrane is an excellent material for hydrogen purification.

关键词： two-dimensional membrane hydrogen separation first-principles

Can Current AGCMs Reproduce Historical Changes in the Atmospheric Diabatic Heating over the Tibetan Plateau?

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Atmospheric and Oceanic Science Letters 2014年第2期7卷 143-148页

作者： duan An-Min xiao Zhi-Xiang HU Jun duan An-Min xiao Zhi-Xiang HU Jun State Key Laboratory of Numerical Modelling for Atmospheric Sciences and Geophysical Fluid Dynamics Institute of Atmospheric Physics Chinese Academy of Sciences Beijing 100029 China University of Chinese Academy of Sciences Beijing 100049 China Key Laboratory of Meteorological Disaster Nanjing University of Information Science and Technology Ministry of Education Nanjing 210044 China

Recent studies have demonstrated a persistent decreasing trend in the spring sensible heat(SH) source over the Tibetan Plateau(TP) during the past three decades. By comparing simulations from nine state-of-the-art atmospheric general circulation models(AGCMs) driven by historical forcing fields with both observational data and five reanalysis datasets, the authors found that the AGCMs are unable to reproduce the change in the SH flux over the TP. This deficiency arises because the observed decreasing trend in SH flux depends primarily on the change in surface wind speed according to the bulk formula, whereas in the models it is also influenced largely by changes in the land-air temperature difference related to the systematic cold bias. In addition, an obvious discrepancy exists in other aspects of the diabatic heating simulated by the models, suggesting that a significant improvement is required in the physical schemes associated with land surface processes and diabatic heating over the complicated topography.

关键词： Tibetan Plateau AGCMs diabatic heating trend

Application of zeolite adsorption and biological anaerobic digestion technology on hydrothermal liquefaction wastewater

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International Journal of Agricultural and Biological Engineering 2017年第1期10卷 163-168页

作者： Li Ruirui ran Xia duan Na Yuanhui Zhang Liu Zhidan Lu Haifeng College of Water Resource and Civil Engineering China Agricultural UniversityBeijing 100083China Department of Agricultural and Biological Engineering University of Illinois at Urbana-ChampaignUrbana 61801USA

The post-hydrothermal liquefaction wastewater(PHWW)was obtained from a conversion process of Spirulina *** bio-crude oil via hydrothermal liquefaction(HTL)technology that was rich in organic matter and *** this study,zeolite was applied to overcome the inhibitions and improve anaerobic digestion(AD)*** zeolite adding ways were evaluated:PHWW pretreated with zeolite for 5 h with/without solid-liquid separation before AD process and zeolite added to PHWW AD process directly,in order to find the most ideal way to add *** indicated that zeolite had a positive effect on the AD process of the *** gas potential of PHWW after adding zeolite,as well as the chemical oxygen demand(COD)removal rate,was much higher than those of its initial *** when the PHWW was pretreated by zeolite for 5 h without separation,the biogas yield increased by 73.96%(6170μmol/g CODremoved)compared with the initial PHWW(3546.7μmol/g CODremoved).

关键词： post-hydrothermal liquefaction wastewater anaerobic digestion zeolite adsorption biogas

Scar-centered dilation in the treatment of large keloids

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World Journal of Clinical Cases 2022年第18期10卷 6032-6038页

作者： Min Wu Jie-Yu Gu ran duan Bo-Xuan Wei Feng Xie Department of Plastic and Reconstructive Surgery Shanghai Ninth People’s HospitalShanghai JiaoTong University School of MedicineShanghai 200011China

BACKGROUND Hypertrophic scars and keloid treatment is a major problem in plastic *** small keloids can be treated with resection followed by radiotherapy,large keloids require treatment with a tissue *** methods increase the need for auxiliary incisions,causing new scar *** To introduce a new method for the treatment of keloids with an *** Between 2018 and 2021,we performed surgeries to treat large keloids in nine patients with a two-stage *** the first stage,an intrascar incision was made in the keloid,and a customized expander was implanted under the keloid and the surrounding normal skin.A period of 3-6 mo was allowed for skin *** the second stage,after the initial incision healed,a follow-up surgery was performed to remove the expander,resect the keloid,and repair the expanded skin *** accomplish this,an incision was made along the scar boundary to avoid making a new surgical incision and creating new *** radiotherapy was then performed *** Two patients had anterior chest *** treatment,the anterior chest incision was broken repeatedly and then sutured again after *** healed smoothly without scar *** were successfully removed in 7 patients without *** This method was performed through a keloid incision and with a custom expander *** full expansion,the keloid was directly resected using a linear suture,which avoids new surgical incisions and scars and can successfully remove large-area *** treatment is effective,providing new insights and strategies for the treatment of similar large-area keloid and hypertrophic scar cases in the future.

关键词： Expander Keloids Superficial radiotherapy Intrascar incision Treatment