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Effectively arsenic(Ⅴ)and fluoride removal in geothermal water using magnetic Fe_(3)O_(4)@MgO nanoparticles

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Chinese Chemical Letters 2023年第5期34卷 286-291页

作者： Qiangying Zhang xin tan Tao Yu School of Science Tibet UniversityLhasa 850000China School of Environmental Science and Engineering Tianjin UniversityTianjin 300350China School of Chemical Engineering and Technology Tianjin UniversityTianjin 300350China

High residual concentration of arsenic and fluoride is a tricky problem to be solved in the process of reinjection after geothermal water *** develop a method to simultaneously remove As(V)and F-from geothermal water using magnetic Fe_(3)O_(4)@MgO adsorbent,fabricated via a one-step *** effects of pH,contact time,adsorbent dose and temperature on the removal efficiency were investigated *** results show that the Fe_(3)O_(4)@MgO composite has a wide range of pH(2-11),ultrafast removal dynamics(As(V):2 min;F-:30 min),and high removal efficiency(As(V):99.9%;F-:96.6%).The adsorption kinetics follows the pseudo-secondorder kinetics model,and the adsorption isotherm model fits *** adsorption capacity of As(V)and F-can reach 123 and 98.4 mg/g,*** exchange of As(V)and F-with Mg-hydroxyl groups hydrolysis by MgO was determined the adsorption *** Fe_(3)O_(4)@MgO adsorbent was capable of achieving the adsorption efficiency as high as 99.9%for As(V)and 97.3%for F-in real geothermal water,***,the proposed Fe_(3)O_(4)@MgO composite exhibited as an excellent adsorbent for the remediation of As-and F-contaminated geothermal water.

关键词： Fe_(3)O_(4)@MgO adsorbent Geothermal water Arsenic(Ⅴ) Fluoride Removal

Room thermal load prediction based on analytic hierarchy process and back-propagation neural networks

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Building Simulation 2022年第11期15卷 1989-2002页

作者： xin tan Zhenjing Zhu Guoxin Sun Linfeng Wu College of Mechanical Engineering Inner Mongolia University of Science and TechnologyBaotou 014010China

Accurate prediction of the heat load is the basic premise of intelligent regulation of the heating system,which helps to realize effective management of heating,ventilation,air conditioning *** the problem that the weight of each influencing factor is not taken into account in the current heat load prediction and is not highly targeted,this article deeply explores the influence of different factors on the room heat load,and we propose a method to calculate room heat load prediction based on the combination of analytic hierarchy process(AHP)and back-propagation(BP)neural ***,eight environmental factors affecting the heat load are selected as prediction inputs through parametric analysis,and then the weights of each input are determined by AHP and normalize the prediction data by combining expert opinions,and finally do one-to-one training the quantified score and the room heat load to predict the future heat load by BP neural *** simulation tests show that the mean absolute relative error(MARE)of the proposed prediction method is 5.40%.This article also verifies the influence of different expert opinions on the stability of the *** results show that the proposed method can guarantee higher prediction accuracy and stability.

关键词： heating system heat load prediction analytic hierarchy process back-propagation neural network

Coordination-Driven Terpyridyl Phosphine Pd(Ⅱ) Gels

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Chinese Journal of Chemistry 2015年第1期33卷 141-146页

作者： Hongmiao Li xin tan Jianyong Zhang KLGHEI of Environment and Energy Chemistry School of Chemistry and Chemical EngineeringSun Yat-Sen UniversityGuangzhouGuangdong 510275China

Incorporation of phosphine-Pd catalytic centers in gel network is an important strategy to develop highly active *** this contribution we show that catalytically active phosphine-Pd(II)gels can be readily obtained via re-action of rigid bridging terpyridyl phosphines and Pd(II).The terpyridyl phosphines,Py2P2 and Py2P,contain one 4,2':6',4"-terpyridyl group and two/one diphenylphosphino *** of Py2P2/Py2P and Pd(II)in CHCl_(3)-MeOH afforded the corresponding phosphine-Pd(II)gels at room temperature or at elevated temperature(40℃).The gelation is driven by formation of metal-organic *** heating is important in triggering the formation of Py2P-Pd(II)*** gels have a coherent,rigid spongy porous network of continuous nanome-ter-sized *** phosphine-Pd(II)gels showed high activity in the Suzuki-Miyaura reactions of aryl bro-mides under ambient conditions and could be recycled and reused.

关键词： metal-organic gel phosphine palladium coordination polymer supported catalysis

LiNi_(0.7)Co_(0.15)Mn_(0.15)O_2 microspheres as high-performance cathode materials for lithium-ion batteries

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Rare Metals 2014年第5期33卷 608-614页

作者： Zhou-Guang Lu xin-xin tan You-Gen tang Ke-Chao Zhou Key Laboratory of Powder Metallurgy Central South University College of Chemical & Chemical Engineering Central South University

Advanced uniform LiNi0.7Co0.15Mn0.15O2 microspheres were successfully synthesized and examined as cathode materials for lithium-ion batteries. The structure,morphology, and electrochemical performance of LiNi0.7-Co0.15Mn0.15O2 calcined at different temperatures ranging from 650 to 900 °C were systematically investigated. The XRD results show that the material has a well-ordered layered structure with small amount of cation mixing. A distinct spherical morphology of the obtained powders prepared at different temperatures can be seen from the SEM images. The as-synthesized LiNi0.7Co0.15Mn0.15O2 powders have a very high-tap density of about 2.37 g·cm^-3. Among all the samples,the sample calcined at 750 °C exhibits the best electrochemical performance with an initial discharge capacity of185.2 mAh·g^-1（3.0–4.3 V, 0.2C rate） and capacity retention〉94.77 %***,thismaterialshowshighspecific capacity and good cycling stability. The LiNi0.7-Co0.15Mn0.15O2 microspheres with high-specific capacity and high-tap density are promising to use as cathode materials for next-generation high-energy-density lithium-ion batteries.

关键词： Lithium-ion batteries High-energy density Microspheres LiNi0.7Co0.15Mn0.15O2 Co-precipitation method

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形状记忆合金在辅助器具和康复设备中的应用

中国组织工程研究 2025年第10期29卷 2113-2123页

作者：谭鑫张洪跃赵玉婵秦春许硕贵上海体育大学运动健康学院海军军医大学第一附属医院创伤骨科上海理工大学健康科学与工程学院海军军医大学研究生院

背景：随着科技的不断进步，新技术和新方法的引入将为形状记忆合金在辅助和康复领域的应用带来更多的可能性和新的突破。目的：通过综述形状记忆合金在辅助器具和康复设备中的应用现状，讨论它们的主要方法、技术和结果，归纳总结并提... 详细信息

背景：随着科技的不断进步，新技术和新方法的引入将为形状记忆合金在辅助和康复领域的应用带来更多的可能性和新的突破。目的：通过综述形状记忆合金在辅助器具和康复设备中的应用现状，讨论它们的主要方法、技术和结果，归纳总结并提出建议，希望形状记忆合金能够不断优化，为辅助和康复设备的发展带来更多新的变革。方法：通过计算机检索万方、Pub Med和Web of Science数据库，以“形状记忆合金，应用进展，正畸，矫形，假肢，康复，特性，植入，力学性能，镍钛记忆合金，驱动”为中文检索词，以“Shape memory alloys,Application,Orthodontics,Orthopedic,Prosthetics,Rehabilitation,Properties,Implant,Drive,Progress,Prostheses”为英文检索词，最终纳入91篇文献进行综述。结果与结论：(1)形状记忆合金具有耐腐蚀性、耐磨性、生物相容性、抗疲劳性和抗扭结性等特性，相比其他传统材料(不锈钢、钛合金、钴铬合金等)具有更低的弹性模量且无生物毒性，适合作为假体长期植入体内。由于其具有形状记忆效应和优异的力学性能，遂主要作为驱动元件或作为连接设备和人体的桥梁应用于假肢、矫形器和康复设备中。(2)使用形状记忆合金驱动元件能够减轻设备质量、消除噪声、容易操作、便于携带和更好地辅助关节运动等，比起使用气动、液压和电气驱动方法的设备优势明显。(3)另外形状记忆合金在变形时能够产生恒久、稳定的应力，相比不锈钢、钛合金和铝合金矫形器具有更高的材料回收率且不用频繁更换调整，所以在矫治畸形方面更具实用价值。(4)目前形状记忆合金在矫形器中应用最多，在镫骨假体中的临床应用效果最好。而由于技术及成本等的限制，形状记忆合金在假肢和康复设备中的应用较少，且缺乏对应用效果的大样本研究。(5)虽然形状记忆合金在辅助和康复领域得到了一定的发展，但仍存在许多问题：对形状记忆合金进行精准控制很难；形状记忆合金的冷却速度慢；无法对其变形速度进行控制；缺乏对不同性状形状记忆合金的对比研究和专家共识；形状记忆合金成本高，价格贵。(6)未来应注意开发新型形状记忆合金，增加对比性研究，采用新技术、新方法(如4D打印等)解决目前存在的问题，从而研发出高性能的辅助器具和康复设备。

关键词：形状记忆合金矫形器康复设备假肢形状记忆效应驱动元件超弹性假体康复训练

Enhancing cell adhesive and antibacterial activities of glass-fibre-reinforced polyetherketoneketone through Mg and Ag PIII

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Regenerative Biomaterials 2023年第1期10卷 1278-1293页

作者： xin tan Zhongyi Wang xin Yang Ping Yu Manlin Sun Yuwei Zhao Haiyang Yu State Key Laboratory of Oral Diseases National Clinical Research Center for Oral DiseasesWest China Hospital of StomatologySichuan UniversityChengduChina Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences College of StomatologyChongqing Medical UniversityChongqingChina Jiangsu Key Laboratory of Oral Diseases Affiliated Hospital of StomatologyNanjing Medical UniversityNanjingChina Department of Stomatology Chengdu Second People’s HospitalChengduChina

Glass-fibre-reinforced polyetherketoneketone(PEKK-GF)shows great potential for application as a dental implant restoration material;however,its surface bioinertness and poor antibacterial properties limit its integration with peri-implant soft tissue,which is critical in the long-term success of implant ***,functional magnesium(Mg)and silver(Ag)ions were introduced into PEKK-GF by plasma immersion ion implantation(PIII).Surface characterization confirmed that the surface morphology of PEKK-GF was not visibly affected by PIII *** tests revealed that PIII changed the wettability and electrochemical environment of the PEKK-GF surface and enabled the release of Mg^(2+)and Ag^(+)modulated by Giavanni *** vitro experiments showed that Mg/Ag PIII-treated PEKK-GF promoted the proliferation and adhesion of human gingival fibroblasts and upregulated the expression of adhesion-related genes and *** addition,the treated samples inhibited the metabolic viability and adhesion of Streptococcus mutans and Porphyromonas gingivalis on their surfaces,distorting bacterial ***/Ag PIII surface treatment improved the soft tissue integration and antibacterial activities of PEKK-GF,which will further support and broaden its adoption in dentistry.

关键词： glass-fibre-reinforced polyetherketoneketone plasma immersion ion implantation human gingival fibroblasts antibacterial activity

Study of 2-Propanol Photocatalytic Degradation on Surface of Phase-Ratio-Controlled TiO_2 Nanoparticles

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Transactions of Tianjin University 2018年第1期24卷 1-7页

作者： Yifei Wang Hongmei Wang xin tan School of Environmental Science and Engineering Tianjin University Tianjin Metro Group Co. Ltd. School of Science Tianjin University

The crystal form of TiO_2 is a crucial focus of research on the photocatalytic degradation of gaseous pollutants by TiO_2-based composite photocatalysts. To explore the synergistic effect of mixed crystalline TiO_2 on gaseous organic-pollutant photocatalytic degradation, we synthesized a series of TiO_2 nanoparticles with controllable phase ratios. We explored the role of the TiO_2 phase ratio on the photocatalytic activity and degradation pathway in the photodegradation of 2-propanol(IPA). We estimated the crystallite size and crystal proportions of anatase and rutile by X-ray diffraction. We used the Brunauer-Emmett-Teller method to calculate the specific surface area and Fourier transform infrared spectroscopy to characterize the surface chemistry of the samples. Our results show the photocatalytic activities of pure anatase and the sample with 8.6% rutile to be much better than those of the samples with a phase junction and pure rutile. As such, anatase is the better option for the study of photodegradation design and preparation of gas-phase organic pollutants.

关键词： Mixed-phase TiO2 Phase junctions Photocatalytic degradation 2-Propanol

Modification of biomaterials surface by mimetic cell membrane to improve biocompatibility

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Frontiers of Materials Science 2014年第4期8卷 325-331页

作者： Lei ZHOU Guo-xin tan Cheng-Yun NING School of Chemical Engineering and Light Industry Guangdong University of Technology Guangzhou 510006 China College of Materials Science and Engineering South China University of Technology Guangzhou 510641 China

Modification of biomaterials surface by mimetic cell membrane for improving biocompatibility, to imitate the excellent biological and physiological proper- ties of the natural cell membrane, is an important research area in materials science. Numerous studies have been attempted to construct a mimetic cell membrane biointer- face composed of phosphorylcholine （PC）-containing polymers or other phospholipid analogues on biomaterials surface. PC-containing biointerfaces show outstanding characteristics, especially in biological aspects such as blood compatibility and antifouling property. In this mini-review, the strategies of membrane mimetic modification of biomaterials and their antifouling applications are summarized.

关键词： mimetic cell membrane phosphorylcholine (PC) biocompatibility surfacemodification biomaterial

An Advanced Spectrum Allocation Algorithm for The Across-Cell D2D Communication in LTE Network with Higher Throughput

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China Communications 2016年第4期13卷 30-37页

作者： LI Yun ZHANG Le tan xin CAO Bin Chongqing Key Lab of Mobile Communication Technology Chongqing University of Post and Telecommunications(CQUPT) National Mobile Communications Research Laboratory Southeast University

In the hybrid LTE cellular network with D2D(Device-to-Device) communication, D2D communication technologies can improve the spectral efficiency significantly. However, the D2D users have to reutilize the spectrum which is allocated to the cellular users. Therefore, the co-channel interference will be more complicated in the case of crosscell D2D communications. In this article, a novel spectrum allocation algorithm for inter-cell D2D communication considering the traffic load is proposed. The traffic load can be balanced by the proposed algorithm. Meanwhile D2D users can multiplex the spectrum allocated to a number of cellular users with a certain percentage to meet the requirements of Qo S of D2D communications and reduce the interference to cellular users. Finally, the simulation results demonstrate that the proposed algorithm can meet the needs of D2D users, balance the traffic load and improve the overall throughput of the system.

关键词： cellular network D2D communi-cation cross-cell spectrum allocation