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Reduction of chromium oxides in stainless steel dust

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International Journal of Minerals,Metallurgy and Materials 2015年第6期22卷 573-581页

作者： Yan-ling Zhang Wen-ming Guo xin-lei Jia State Key Laboratory of Advanced Metallurgy University of Science and Technology Beijing

The recovery of metal oxides from stainless steel dust using C（graphite）, SiFe, and Al as reductants was investigated under various conditions. The apparent distribution ratio of Cr（L Cr ′^m/s ） in the recovered metal and residual slag phases was defined as the major performance metric. The results show that the recovery ratio of metals increases as the ratio of CaO ：SiO2 by mass in the residual slag increases to 1.17. The residual content of metals in the slag decreases as the Al2O3 content of the slag is increased from approximately 8wt% to 10wt%. The recovery ratio of Cr increases with increasing L Cr ′^ m/s , and a linear relationship between L Cr ′^m/s and the activity coefficient ratio of CrO in the slag and the recovered metal phase is observed. The combination of C and SiFe or Al as the reducing agents reveals that Si is the more effective coreductant.

关键词： stainless steel dust chromium oxides recovery apparent distribution ratio activity coefficient

Multiscale observation of Li plating for lithium-ion batteries

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Rare Metals 2021年第11期40卷 3038-3048页

作者： xin-lei Gao xin-Hua Liu Wen-Long Xie Li-Sheng Zhang Shi-Chun Yang School of Transportation Science and Engineering Beihang UniversityBeijing 100191China

As the most hazardous side reaction,Li plating poses high risks of undermining electrochemical performance of Li-ion batteries by accelerating *** some extreme abuse conditions,Li plating can even jeopardize safety performance and induce catastrophic results like thermal ***,multiscale observation of Li plating is of great significance for understanding the internal mechanisms and early detection of Li *** this mini-review,the recent progress of formation mechanisms of plated metallic lithium was ***,the in situ and ex situ observation methods of macroscopic,microscopic and atomic level were *** electrode provides a promising tool for real-time monitoring of anode potential,which is the critical factor of Li plating,showing great potentials in cloudbased battery management ***,some perspectives for future researches on Li plating observation and corresponding utilizations in developing Li plating free control strategies were proposed.

关键词： Lithium-ion battery Li plating Multiscale observation Reference electrodes

Progress in systemic therapy of advanced hepatocellular carcinoma

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World Journal of Gastroenterology 2016年第29期22卷 6582-6594页

作者： xin-lei Gong Shu-Kui Qin Chinese People’s Liberation Army Cancer Center Bayi Hospital

Primary liver cancer, mainly consisting of hepatocellular carcinoma(HCC), is one of common malignancies worldwide, and prevalent among the Chinese population. A diagnosis of early stage HCC has proven to be very difficult because of its insidious feature in onset and development. At the time of diagnosis, most HCC cases are locally advanced and/or distant metastatic, which results in difficulty to be treated and poor prognosis. For advanced HCC, systemic therapy is frequently adopted as an important palliative method. In recent years, clinical studies and observations have often reported about systemic anti-cancer therapy of advanced HCC, including molecular target therapy, systemic chemotherapy and immunotherapy. In this article, we review these treatment modalities to provide a reference for clinicians.

关键词： Hepatocellular carcinoma Systemic therapy Molecular targeted therapy Chemotherapy Progress

A comparative study on the reactivity of cationic niobium clusters with nitrogen and oxygen

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Chinese Chemical Letters 2022年第2期33卷 1058-1064页

作者： Benben Huang Mengzhou Yang xin lei Wen Gan Zhixun Luo Beijing National Laboratory for Molecular Sciences(BNLMS) State Key Laboratory for Structural Chemistry of Unstable and Stable SpeciesInstitute of ChemistryChinese Academy of SciencesBeijing 100190China University of Chinese Academy of Sciences Beijing 100049China

We have prepared well-resolved Nb^(+)_(n)(n=1-10)clusters and report here an in-depth study on the es-sentially different reactivity with N_(2)and O_(2),by utilizing a multiple-ion laminar flow tube reactor in tandem with a customized triple quadrupole mass spectrometer(MIFT-TQMS).As results,the Nb^(+)_(n)clus-ters are found to readily react with N_(2)and form adsorption products Nb_(n)N^(+)_(2m);in contrast,the reactions with O_(2)give rise to Nb_(n)O^(+)_(1−4)products,and the odd-oxygen products indicate O-O bond dissociation,as well as increased mass abundance of NbO^(+)pertaining to oxygen-etching *** illustrate how N_(2) prefers a physical adsorption on Nb^(+)_(n)clusters with an end-on orientation for all the products,and allow for size-selective Nb^(+)_(n)clusters to act as electron donor or acceptor in forming Nb_(n)N^(+)_(2m).In contrast to these nitrides,the dioxides Nb_(n)O+2display much larger binding energies,with O_(2)always as an electron acceptor,corresponding to superoxide or peroxide states in the initial ***-of-states and orbital anal-yses show that the interactions between Nb^(+)_(n)and O_(2)are dominated by strongπ-backdonation indicative of incidental electron transfer;whereas weakπ-backdonation and simultaneousσdonation interactions exist in Nb_(n)N^(+)_(2).Further,reaction dynamics analysis illustrates the different interactions for N_(2)and O_(2) in approaching the Nb^(+)_(n)clusters,showing the energy diagrams for N_(2)adsorption and O-O bond dissoci-ation in producing odd-oxygen *** analyses with orbital correlation and donor-acceptor charge transfer are also performed,giving rise to full insights into the reactivities and interactions of such transition metal clusters with typical diatomic molecules.

关键词： Gas phase reaction Nb cluster Chemical adsorption Orbital analysis Energy decomposition analysis

Large-scale fabrication of decoupling coatings with promising robustness and superhydrophobicity for antifouling,drag reduction,and organic photodegradation

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Friction 2023年第5期11卷 716-736页

作者： lei xin Hao LI Jian GAO Zhongwei WANG KaiJie ZHOU Sirong YU School of Materials Science and Engineering Shandong University of Science and TechnologyQingdao 266590China School of Materials Science and Engineering China University of Petroleum(East China)Qingdao 266580China

It is still a challenge to achieve large-area preparation of robust superhydrophobic surfaces with strong mechanical ***,a simple and low-cost method to prepare robust decoupling superhydrophobic coatings on aluminum(Al)alloys substrate has been *** superhydrophobicity and robustness of decoupling coatings are realized by structuring surfaces at two different length scales,with nanostructures for superhydrophobicity and microstructures for *** prepared decoupling coating shows promising superhydrophobicity,with water contact angle(CA)of~158.4°and roll off angle(RA)of~3°.It also exhibits high repellency for impacting water ***,the decoupling coating processes outstanding adhesion strength on the substrate after tape-peeling and cross-cut tests,also with promising wear resistantance after sandpaper abrasion and wear *** friction coefficient of this decoupling coating is only~*** addition,the robust decoupling superhydrophobic coating is applied to underwater buoyancy enhancement and fluid resistance reduction(drag reduction rate~30.09%).This decoupling superhydrophobic coating also displays promising self-cleaning and antifouling ***,benefitting from the photocatalytic property of TiO2,this decoupling coating is also exploited for degrading organics to achieve seawater *** obtained decoupling superhydrophobic coating is expected to apply on other solids in marine fields,and the simple and eco-friendly method develops the potential practical application.

关键词： Superhydrophobic decoupling wear resistance drag reduction

Hydrodynamics of the Semi-Immersed Cylinder by Forced Oscillation Model Testing

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China Ocean Engineering 2018年第1期32卷 110-116页

作者： SONG Chun-hui FU Shi-xiao TANG Xiao-ying HU Ke MA lei-xin REN Tong-xin State Key Laboratory of Ocean Engineering Shanghai Jiao Tong UniversityShanghai 200240China Collaborative Innovation Center for Advanced Shipand Deep-Sea Exploration Shanghai 200240China School of Naval Architecture and Ocean Engineering Jiangsu University of Science and TechnologyZhenjiang 212003China Tianjin Research Institute for Water Transport Engineering Tianjin 300000China Massachusetts Institute of Technology CambridgeMA 02139USA

In this paper, the hydrodynamic coefficients of a horizontal semi-immersed cylinder in steady current and oscillatory flow combining with constant current are obtained via forced oscillation experiments in a towing tank. Three nondimensional parameters(Re, KC and Fr) are introduced to investigate their effects on the hydrodynamic *** experimental results show that overtopping is evident and dominates when the Reynolds number exceeds 5×105 in the experiment. Under steady current condition, overtopping increases the drag coefficient significantly at high Reynolds numbers. Under oscillatory flow with constant current condition, the added mass coefficient can even reach a maximum value about 3.5 due to overtopping while the influence of overtopping on the drag coefficient is minor.

关键词： semi-immersed cylinder hydrodynamic coefficient forced oscillation experiment overtopping

Dual potential of microalgae as a sustainable biofuel feedstock and animal feed

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Journal of Animal Science and Biotechnology 2014年第1期5卷 15-21页

作者： Krystal K Lum Jonggun Kim xin Gen lei Department of Animal Science Cornell University

The rise in global population has led to explorations of alternative sources of energy and food. Because corn and soybean are staple food crops for humans, their common use as the main source of dietary energy and protein for food-producing animals directly competes with their allocation for human consumption. Alternatively, de-fatted marine microalgal biomass generated from the potential biofuel production may be a viable replacement of corn and soybean meal due to their high levels of protein, relatively well-balanced amino acid profiles, and rich contents of minerals and vitamins, along with unique bioactive compounds. Although the full-fatted （intact） microalgae represent the main source of omega-3 （n-3） polyunsaturated fatty acids including docohexaenoic acid （DHA） and eicosapentaenoic acid （EPA）, the de-fatted microalgal biomass may still contain good amounts of these components for enriching DHA/EPA in eggs, meats, and milk. This review is written to highlight the necessity and potential of using the de-fatted microalgal biomass as a new generation of animal feed in helping address the globa energy, food, and environmental issues. Nutritional feasibility and limitation of the biomass as the new feed ingredient for simple-stomached species are elaborated. Potential applications of the biomass for generating value-added animal products are also explored.

关键词： Algae Biofuel Feed Health Nutrition

Enhanced electron transport through two-dimensional Ti_(3)C_(2) in dye-sensitized solar cells

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Rare Metals 2022年第9期41卷 3078-3085页

作者： Gang Wang Li-Jiao Ma Bing-xin lei Heng Wu Zhao-Qing Liu Key Laboratory of Electrochemical Energy Storage and Energy Conversion of Hainan Province Key Laboratory of Electrochemical Energy Storage and Light Energy Conversion Materials of Haikou CitySchool of Chemistry and Chemical EngineeringHainan Normal UniversityHaikou571158China School of Materials and Environment Guangxi University for NationalitiesNanning530006China Guangzhou Key Laboratory for Clean Energy and Materials Huangpu Hydrogen Innovation CenterInstitute of Clean Energy and MaterialsSchool of Chemistry and Chemical EngineeringGuangzhou UniversityGuangzhou510006China

Two-dimensional(2D)Ti_(3)C_(2) material has a wide range of photovoltaic applications due to its unique electronic,optical,and plasmonic ***,we present a series of Ti_(3)C_(2)(0,0.6,0.8;wt%)nanosheets-modified P25 nanoparticles as photoanode films for dye-sensitized solar cells(DSSCs).The DSSC based on P25 and 0.6 wt%Ti_(3)C_(2) photoanode achieves a fairly good efficiency(9.22%),which greatly exceeds the counterpart based on the pure P25(7.16%).Benefiting from high light scattering and metallic electrical conductivity of Ti_(3)C_(2) additive,the P25/Ti_(3)C_(2)-based DSSC exhibits a superior behavior of controlling photogenerated charge recombination compared with pure P25 one.

关键词： Ti3C2 Conductivity Charge transfer Dyesensitized solar cells

Intermarriage between amorphous and polycrystalline materials in perovskite solar cells:positive or not?

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Journal of Energy Chemistry 2022年第3期31卷 525-528,I0014页

作者： Ying Tan Xueqing Chang Bing-xin lei Wu-Qiang Wu Key Laboratory of Bioinorganic and Synthetic Chemistry(MOE) School of ChemistrySun Yat-sen UniversityGuangzhou 510006GuangdongChina Key Laboratory of Electrochemical Energy Storage and Energy Conversion of Hainan Province School of Chemistry and Chemical EngineeringHainan Normal UniversityHaikou 571158HainanChina

In recent few years,the research field of perovskite solar cells(PSCs)has witnessed an unprecedentedly rapid advancement in terms of skyrocketed power conversion efficiencies(PCEs)owing to the appealing optoelectronic... 详细信息

关键词： coefficient. perovskite amorphous