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SSRN 2023年

作者： Lai, Wei Shan, Linglong Li, Zhenyuan Bai, Ju Xiao, Luqi Zheng, Peijun Bai, Lu Yang, Youming Luo, Shuangjiang Faculty of Materials Metallurgy and Chemistry Jiangxi University of Science and Technology Ganzhou341000 China Ganjiang Innovation Academy Chinese Academy of Sciences Ganzhou341000 China CAS Key Laboratory of Green Process and Engineering State Key Laboratory of Multiphase Complex Systems Beijing Key Laboratory of Ionic Liquids Clean Process Institute of Process Engineering Chinese Academy of Sciences Beijing100190 China Langfang Green Industrial Technology Center Langfang065000 China

The conventional extraction of rare earth (RE) with alkali saponification consumes plenty of alkalis and produces enormous salt effluents. Herein, we propose a novel environmental-friendly non-saponified RE extraction process facilitated by acid-resistant nanofiltration (NF) membranes, in which the non-saponified organic phase directly extracts with RE feed by the multi-stage cross-current approach and the exchanged acid in the raffinate is removed by the acid-resistant NF membrane. The deacidified raffinate is reused as the feed of the non-saponified extraction. The obtained acid solution can be used for leaching or scrubbing after concentration. The feed concentration of the non-saponified extraction was optimized, and a high RE concentration of 0.21 mol L-1 in the organic phase and an average extraction rate of 89.9% were obtained with a 0.1 mol L-1 feed RE concentration. 99% of the acid in the raffinate was removed by acid-resistant NF under a RECl3 concentration of 4.9 g L-1, along with a recovered pH value of ~3, resulting in a high total RE yield of 99.6%. The acid-resistant NF facilitated non-saponified extraction featuring high atom economy, absence of alkalis consumption and salinity effluent emission, and eco-recycle of the raffinate render the separation of RE elements a versatilely sustainable and green process. © 2023, The Authors. All rights reserved.

关键词： Rare earths

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Non-proteolytic ubiquitination of HBx controls HBV replication

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Virologica Sinica 2024年第2期39卷 338-342页

作者： Xiangpeng Sheng Yi Yang Min Zhu Linlin Zhou Fang Zhu Yuanfei Zhu Siying Dong Hui Kong Honghua Wang Ji Jiang Mingyue Wan Mingyang Feng Qiang Deng Yumin Xu Qing You Ronggui Hu State Key Laboratory for Animal Disease Control and Prevention Harbin Veterinary Research InstituteChinese Academy of Agricultural SciencesHarbin 150069China State Key Laboratory of Molecular Biology Shanghai Institute of Biochemistry and Cell BiologyCenter for Excellence in Molecular Cell ScienceChinese Academy of SciencesShanghai 200031China Key Laboratory of Systems Health Science of Zhejiang Province School of Life ScienceHangzhou Institute for Advanced StudyUniversity of Chinese Academy of SciencesHangzhou 310024China Department of Thoracic Surgery Ruijin HospitalShanghai Jiaotong University School of MedicineShanghai 200025China Shanghai Key Laboratory of Plant Molecular Sciences College of Life SciencesShanghai Normal UniversityShanghai 200234China Department of Pathogenic Biology West China School of Basic Medical Sciences&Forensic MedicineSichuan UniversityChengdu 610041China School of Medicine Guizhou UniversityGuiyang 550025China Key Laboratory of Medical Molecular Virology(MOE&MOH) School of Basic Medical SciencesFudan UniversityShanghai 200032China Department of Hospital Infection Management Department of Infectious DiseasesRuijin HospitalShanghai Jiao Tong University School of MedicineShanghai 200025China School of Biomedical Engineering Shanghai Jiao Tong UniversityShanghai 200240China

Dear Editor,Although effective vaccines and antiviral therapies are available,hepatitis B virus(HBV)infection is still a serious global health *** HBV infection remains the principal cause of liver cirrhosis and hepatocellular carcinoma(HCC).HBV is a small DNA virus,owning a~3.2 kb genome that encodes several proteins:viral DNA polymerase,core antigen(HBcAg),E antigen(HBeAg),three surface antigens(PreS1/PreS2/HBsAg),and a regulatory X protein(HBx)(Lamontagne et al.,2016).X protein,named for its lack of homology with any known proteins,is a 154 aa protein that plays an essential role in HBV biology and regulates the development of HCC(Yang et al.,2022).Although previous studies have strongly expanded our understanding of HBx,the regulation of HBx is not completely elucidated.

关键词： infection cirrhosis

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Investigating laser-induced bond breaking in high-density polyethylene pyrolysis

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RSC Advances 2025年第26期15卷 21089-21107页

作者： Rao Adeel Un Nabi Hassan Abbas Khawaja Yaoxiang Liu Chaopeng Yang Tie-Jun Wang State Key Laboratory of High Field Laser Physics Shanghai Institute of Optics and Fine Mechanics and CAS Center for Excellence in Ultra-intense Laser Science Chinese Academy of Sciences Shanghai China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of Sciences Beijing 100049 China Department of Automation and Process Engineering UiT The Arctic University of Norway Tromsø Norway

A particular laser harmonic with an effective combination of process parameters can break plastic bonds by surpassing the dissociation threshold. Exploring this direction is imperative to uncover new physics and chemistry related to laser-high-density polyethylene (HDPE) interactions and to understand the phenomena occurring during laser induced degradation. An experiment was conducted in an open-air environment using the first (1064 nm), second (532 nm), and fourth (266 nm) harmonics at a 20 Hz repetition rate, with pulse energies of 5–40 mJ for the first and second harmonics, and 3–10 mJ for the fourth harmonic. The findings revealed that all laser harmonics broke HDPE bonds, with the fourth harmonic being the most effective in directly breaking bonds, particularly C–H bonds, which was evident from a prominent Hα peak at 656.3 nm. The results demonstrate initial, partial, and post-bond breaking, which can address deficiencies in laser-HDPE recycling and enable laser-induced HDPE pyrolysis, which has not been investigated. Optical microscopic analysis showed that craters formed by the fourth harmonic were wider and exhibited more efficient photon absorption with minimal ablation. Additionally, a high confidence interval (R²) value of 0.9758 with increased electron density and plasma temperatures, further supports the efficiency of bond breaking.

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Diameter-Selective Interactions between Functionalized Fullerenes and Single-Walled Carbon Nanotubes

SSRN

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SSRN 2023年

作者： Zhang, Rui Gao, Wanru Sun, Chang Liu, Yiwen Lu, Xiaojun Lu, Xing Key Laboratory for Green Chemical Process of Ministry of Education School of Chemical Engineering and Pharmacy Wuhan Institute of Technology Wuhan430205 China State Key Laboratory of Materials Processing and Die & Mould Technology School of Materials Science and Engineering Huazhong University of Science and Technology Wuhan430074 China

Peapods, as its electronic properties and spintronic, have attracted great attention for their potential applications. Which combine with fullerenes or their derivatives encapsulated inside. Herein, we have designed and synthesized a series of fullerene derivatives with different functional groups which are then encapsulated into single-walled carbon nanotubes (SWCNTs). Accurate morphological characterization with high-resolution TEM reveals a clear correlation between the filling ratio of the peapods and the steric bulk of functionalized groups. Further spectroscopic characterizations reveal diameter-selective interactions between the fullerene derivatives and SWCNTs which in turn influence the electronic structures of nanotubes. Our results have shed new light on the controlled synthesis and property-tuning of nano peapods. © 2023, The Authors. All rights reserved.

关键词： Fullerenes

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Composite Material Derived from Zif-67 with Biochar Promotes Ozonation of 4-Nitrophenol

SSRN

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SSRN 2023年

作者： Ren, Mingzhu Wang, Fuxue Zhang, Jiang Wang, Chong-Chen Wang, Kui Zhang, Jianbo Wang, Zhou-Jun Xie, Yongbing State Key Laboratory of Vanadium Titanium Resources Comprehensive Utilization Pangang Group Research Institute Co. Ltd. Panzhihua617000 China Chemistry & Chemical Engineering Data Center Institute of Process Engineering Chinese Academy of Sciences Beijing100190 China Beijing Key Laboratory of Functional Materials for Building Structure and Environment Remediation Beijing University of Civil Engineering and Architecture Beijing100044 China State Key Laboratory of Chemical Resource Engineering Beijing University of Chemical Technology Beijing100029 China

Cobalt 2-methylimidazole (ZIF-67) have abundant nitrogen and cobalt elements, which can be used as an excellent precursor for catalyst synthesis. In this study, a new Co, N co-doped carbon-based catalyst (Co-N-BC) was synthesized from ZIF-67 and biochar, which can significantly improve the degradation of 4-nitrophenol (4-NP) in catalytic ozonation. The mineralization rate of 4-NP achieves 65.8% within 60 min. The catalyst showed high recycling stability in the 4 cycles of reuse experiment. Different operating parameters, such as solution pH, the concentration of O3 and 4-NP, have been studied in Co-N-BC catalytic ozonation. O3, O2–· and ·OH are determined as the main reactive species for 4-NP degradation. The existence of inorganic ions, such as Cl-, NO2-, CO32- and PO43-, all significantly inhibited the degradation of 4-NP to different extend, respectively. The effect of substituent on a series of organics with similar structure of 4-NP was also investigated in Co-N-BC catalytic ozonation. This study provides a new composite material Co-N-BC for heterogeneous catalytic ozonation, which is very promising in 4-NP contained complex wastewater treatment. © 2023, The Authors. All rights reserved.

关键词： Cobalt

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Core-shell Ag-Pt nanoparticles:A versatile platform for the synthesis of heterogeneous nanostructures towards catalyzing electrochemical reactions

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Chinese Chemical Letters 2021年第11期32卷 3288-3297页

作者： Danye Liu Niuwa Yang Qing Zeng Hui Liu Dong Chen Penglei Cui Lin Xu Chaoquan Hu Jun Yang State Key Laboratory of Multiphase Complex Systems and Center of Mesoscience Institute of Process EngineeringChinese Academy of SciencesBeijing 100190China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049China Nanjing IPE Institute of Green Manufacturing Industiy Nanjing 211100China School of Chemistry and Materials Science Jiangsu Key Laboratoiy of New Power BatteriesNanjing Normal UniversityNanjing 210023China

Heterogeneous nanostructures that are defined as a hybrid structure consisting of two or more nanoscale domains with distinct chemical compositions or physical characteristics have attracted intense efforts in recent *** this review,we focus on the introduction of a number of heterogeneous nanostructures derived using core-shell Ag-Pt nanoparticles as starting materials,including hollow,dimeric and composite structures and also highlight their application in catalyzing electrochemical reactions,e.g.,methanol oxidation reaction and oxygen reduction *** review not only shows the capability of core-shell Ag-Pt nanoparticles in producing various heterogeneous nanostructures as starting templates,but also highlights the structural design or electronic interaction that endows the heterogeneous nanostructures with enhanced catalytic properties either in methanol oxidation or in oxygen ***,we also make some perspectives for more heterogeneous nanostructures that may be prepared by using core-shell Ag-Pt particles or their derivatives so as to offer the readers the opportunities and challenges in this field.

关键词： Heterogeneous nanostructures Core-shell Electrochemical reaction Methanol oxidation reaction Oxygen reduction reaction

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Observation of double indirect interlayer exciton in MoSe_(2)/WSe_(2) heterostructure

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Nano Research 2022年第3期15卷 2661-2666页

作者： Biao Wu Yunpeng Wang Jiahong Zhong Cheng Zeng Yassine Madoune Wanting Zhu Zongwen Liu Yanping Liu School of Physics and ElectronicsHunan Key Laboratory for Super-microstructure and Ultrafast Process Central South University932 South Lushan RoadChangshaHunan 410083China State Key Laboratory of High-Performance Complex Manufacturing Central South University932 South Lushan RoadChangshaHunan 410083China School of Chemical and Biomolecular Engineering The University of SydneyNSW 2006Australia The University of Sydney Nano Institute The University of SydneyNSW 2006Australia Shenzhen Research Institute of Central South University A510aVirtual University BuildingSouthern DistrictHigh-tech Industrial ParkYuehai StreetNanshan DistrictShenzhen 518057China

Interlayer excitons(IXS)are electron–hole pairs bound in the spatial separation layer by the Coulomb effect,and their lifetime is several orders of magnitude longer than that of direct excitons,providing an essential platform for long-lived exciton *** recent emergence of the van der Waals heterostructure(HS),which combines two layers of different transitional metal dichalcogenides(TMDs),has created new opportunities for IX ***,we demonstrate the observation of double indirect interlayer excitons in the MoSe_(2)/WSe_(2)HS using photoluminescence(PL)*** intensities of the two peaks are essentially the same,and the energy difference is 22 meV,which is perfectly in line with the calculation result of density functional ***,the experience of variable excitation power also proves that the splitting of the IXs originates from the conduction band spin-splitting of MoSe_(2).The observation results provide a promising platform for further exploring the new physical properties and optoelectronic phenomena of TMD HS.

关键词： transitional metal dichalcogenides heterostructure interlayer exciton photoluminescence density functional theory

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Enhanced Soft Sensor with Qualified Augmented Data Using Centroid Measurement Criterion

Enhanced Soft Sensor with Qualified Augmented Data Using Cen...

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2021 International Conference on Information, Cybernetics, and Computational Social Systems, ICCSS 2021

作者： Dai, Yun Yu, Qing Yang, Tao Yao, Yuan Liu, Yi Zhejiang University of Technology Institute of Process Equipment and Control Engineering Hangzhou310023 China Northeastern University State Key Laboratory of Synthetical Automation for Process Industries Shenyang110819 China National Tsing Hua University Department of Chemical Engineering Hsinchu30013 Taiwan

ISBN: (纸本)9781665402453

Development of reliable soft sensors using limited labeled samples is not an easy task in industrial processes. A selective generative adversarial network (SGAN)-based support vector regression (SGAN-SVR) soft sensor is proposed for quality prediction using limited labeled training data. Specifically, SVR is considered as a base prediction model. The Wasserstein GAN (WGAN) is adopted to capture the distribution of available labeled data and generate virtual candidates. Subsequently, using a proposed similarity measurement strategy, those synthetic data with more information are selected and introduced into the training set. Using the designed data augmentation approach, the SGAN-SVR model can achieve better prediction performance compared with the SVR soft sensor. The quality prediction results on an industrial polyethylene process demonstrate the effectiveness and advantages of the proposed method. © 2021 IEEE.

关键词： Generative adversarial networks

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Deep Graph Network for process Soft Sensor Development

Deep Graph Network for Process Soft Sensor Development

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2021 International Conference on Information, Cybernetics, and Computational Social Systems, ICCSS 2021

作者： Jia, Mingwei Dai, Yun Xu, Danya Yang, Tao Yao, Yuan Liu, Yi Zhejiang University of Technology Institute of Process Equipment and Control Engineering Hangzhou310023 China Northeastern University State Key Laboratory of Synthetical Automation for Process Industries Shenyang110819 China National Tsing Hua University Department of Chemical Engineering Hsinchu30013 Taiwan

ISBN: (纸本)9781665402453

In the (bio)chemical processes, traditional hardware sensors are difficult to directly measure the quality of critical products due to their time-varying, non-linear, and dynamic characteristics. This makes process soft sensor modeling methods important. Since the process variables can be regarded as natural graph data, this work introduces graphs in the soft sensor modeling area. A soft sensor model based on the graph neural network (GNN) is proposed. The model can learn the topological structure of graph data between each unit variable. Moreover, it characterizes variable relationships from the spatial and temporal dimensions to the output prediction by introducing the spatial-temporal convolutional layer. The effectiveness and advantages of the GNN-based soft sensor model are verified using a simulated fermentation process. © 2021 IEEE.

关键词： Graph neural networks

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Indications of superconductivities in blend of variant apatite and covellite

arXiv

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arXiv 2024年

作者： Wang, Hongyang Zhao, Yijing Wu, Hao Wang, Ling Wu, Zhixing Geng, Zhihui Xiao, Jiewen Xue, Weiwei Ye, Shufeng Chen, Ning Qiao, Xianfeng Yao, Yao State Key Laboratory of Mesoscience and Engineering Institute of Process Engineering Chinese Academy of Sciences Beijing100049 China Independent researcher China School of Materials Science and Engineering Huazhong University of Science and Technology Wuhan430074 China Beijing Key Laboratory of Ionic Liquids Clean Process Institute of Process Engineering Chinese Academy of Sciences Beijing100190 China Fujian Provincial Key Laboratory of Analysis and Detection Technology for Food safety College of Chemistry Fuzhou University Fuzhou350108 China Graduate School of Engineering Tokai University Hiratsuka2591292 Japan College of Environmental Science and Engineering Beijing Forestry University Beijing100083 China CAS Key Laboratory of Mechanical Behavior and Design of Materials Department of Modern Mechanics University of Science and Technology of China Hefei230027 China School of Materials Science and Engineering University of Science and Technology Beijing Beijing100083 China State Key Laboratory of Luminescent Materials and Devices South China University of Technology Guangzhou510640 China Department of Physics South China University of Technology Guangzhou510640 China

Through heavily doping sulfur into an apatite framework, we synthesize a new blend mainly comprising variant apatite and covellite (copper sulfide). Magnetic measurement exhibits that significant diamagnetism appears at around 260 K and drops dramatically below 30 K implying coexistence of two superconducting phases. The upper critical magnetic field is larger than 1000 Oe at 250 K. Electric measurement manifests that the current-voltage curves deviate from the normal linear lineshape suggesting the presence of zero-resistance effect, and the critical current is around 50 µA at 140 K. These exotic magnetic and electric features strongly indicate these two components, variant apatite and covellite, individually trigger two superconducting phases at near-room and low temperatures. Copyright © 2024, The Authors. All rights reserved.

关键词： Copper compounds

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