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CaH2-promoted activity of Ni-carbonate interface for CO2 methanation

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Journal of Energy Chemistry 2025年第1期100卷 522-532页

作者： Jin-Peng Wang Guo-Cui mao Hui-lin Jiang Bao-Xia Dong Yun-Lei Teng School of Chemistry and Chemical Engineering Yangzhou University

Transition metal-carbonate interfaces often act as active sites in heterogeneous catalytic *** interface between transition metal and metal carbonate exhibits a dynamic equilibrium during the CO2hydrogenation reaction,involving surface carbonate hydrogenation and ***,there have been few reports on engineering the activity of the interface between transition metal and alkaline earth metal carbonate for catalytic *** work demonstrated that the incorporation of CaH2in Ni/CaCO3enhances the CO2methanation activity of the *** CO2conversion for Ni/CaH2-CaCO3reached 68.5%at 400°C,which was much higher than that of the Ni/CaCO3（31.6%） and Ni/CaH2-CaO （42.4%） ***,the Ni/CaH2-CaCO3catalysts remained stable during the stability test for 24 h at 400°C and 8 *** research revealed that CaH2played a crucial role in promoting the activity of the Ni-carbonate interface for ***2could modify the electronic structure of Ni and tune the structural properties of CaCO3to generate medium basic sites （OH groups）,which are favorable for the activation of H2and ***-situ Fourier transform infrared spectroscopy （FTIR） analysis combined with density functional theory calculations demonstrated that CO2activation occurs at the hydroxyl group （OH） on the CaH2-modified Ni-carbonate surface,leading to the formation of CO3H****,our study has confirmed that CO2methanation over the Ni/CaH2-CaCO3catalysts proceeds via the formate pathway.

关键词： CO 2 methanation Metal hydride Ni catalysts Carbonate Metal-carbonate interface

High Fe‑Loading Single‑Atom Catalyst Boosts ROS Production by Density Effect for Efficient Antibacterial Therapy

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Nano-Micro Letters 2025年第2期17卷 187-203页

作者： Si Chen Fang Huang Lijie mao Zhimin Zhang Han lin Qixin Yan Xiangyu Lu Jianlin Shi Department of Cardiology Shanghai Tenth People’s HospitalSchool of MedicineTongji UniversityShanghai 200092People’s Republic of China Shanghai Institute of Ceramics Chinese Academy of SciencesShanghai 200050People’s Republic of China Shanghai Frontiers Science Center of Nanocatalytic Medicine School of MedicineTongji UniversityShanghai 200092People’s Republic of China

The current single-atom catalysts(SACs)for medicine still suffer from the limited active site ***,we develop a synthetic method capable of increasing both the metal loading and mass-specific activity of SACs by exchanging zinc with *** constructed iron SACs(h^(3)-FNC)with a high metal loading of 6.27 wt%and an optimized adjacent Fe distance of~4 A exhibit excellent oxidase-like catalytic performance without significant activity decay after being stored for six months and promising antibacterial ***,a“density effect”has been found at a high-enough metal doping amount,at which individual active sites become close enough to interact with each other and alter the electronic structure,resulting in significantly boosted intrinsic activity of single-atomic iron sites in h^(3)-FNCs by 2.3 times compared to low-and medium-loading ***,the overall catalytic activity of h^(3)-FNC is highly improved,with mass activity and metal mass-specific activity that are,respectively,66 and 315 times higher than those of commercial Pt/*** addition,h^(3)-FNCs demonstrate efficiently enhanced capability in catalyzing oxygen reduction into superoxide anion(O_(2)·^(−))and glutathione(GSH)*** in vitro and in vivo assays demonstrate the superior antibacterial efficacy of h^(3)-FNCs in promoting wound *** work presents an intriguing activity-enhancement effect in catalysts and exhibits impressive therapeutic efficacy in combating bacterial infections.

关键词： Nanocatalytic medicine Single-atom catalysts Reactive oxygen species(ROS) High metal loading Oxidase catalysis

锌镀层P-Mo-V三元杂多酸盐配合物膜的性能和结构

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化学研究与应用 2008年第7期20卷 831-835页

作者：李道华袁茂林内江师范学院化学与生命科学系四川内江641112 四川大学化学学院有机金属络合催化研究所四川成都610064

在锌镀层材料表面,磷钼矾(P-Mo-V)三元杂多酸盐具有较好的配位能力,获得了多种具有金属光泽的不溶性彩色配合物膜,有良好的耐蚀性能和装饰效果。加速化学和电化学腐蚀实验(LSV)研究结果表明,Na6(PMo9V3O40).xH2O与锌镀层材料表面反应时... 详细信息

在锌镀层材料表面,磷钼矾(P-Mo-V)三元杂多酸盐具有较好的配位能力,获得了多种具有金属光泽的不溶性彩色配合物膜,有良好的耐蚀性能和装饰效果。加速化学和电化学腐蚀实验(LSV)研究结果表明,Na6(PMo9V3O40).xH2O与锌镀层材料表面反应时,形成的一种新型金黄色杂多酸盐配合物膜(P-Mo-V金黄色配合物膜)的耐蚀性最佳。XPS和AES分析表明,P-Mo-V金黄色配合物膜层中Mo在膜表面的价态为+6,而在膜内层则以+6、+4价共存,其它元素的价态分别为Zn(+2),P(+5),V(+5),从其AES深度剥蚀曲线的组成恒定区求得膜的组成分别为Zn 19.7%,Mo 29.3%,V 21.2%,P 16.1%,O 13.5%;膜层的厚度约为160 nm。

关键词：锌镀层 P—Mo—V金黄色配合物膜谱学特征性能和结构

外周血淋巴细胞和单核细胞比值与乳腺癌新辅助化疗疗效关联性

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中华肿瘤防治杂志 2020年第4期27卷 283-287页

作者：袁茂林韩琼吴斌西南医科大学附属医院乳腺外科四川泸州646000

目的新辅助化疗(neoadjuvant chemotherapy,NAC)已成为局部晚期乳腺癌的标准治疗选择,然而化疗前缺乏有效的疗效预测评估手段。部分研究表明,外周血淋巴细胞与单核细胞比值(lymphocyte-monocyte ratio,LMR)与多种癌症的预后相关。本研... 详细信息

目的新辅助化疗(neoadjuvant chemotherapy,NAC)已成为局部晚期乳腺癌的标准治疗选择,然而化疗前缺乏有效的疗效预测评估手段。部分研究表明,外周血淋巴细胞与单核细胞比值(lymphocyte-monocyte ratio,LMR)与多种癌症的预后相关。本研究探讨化疗前外周血LMR对乳腺癌新辅助化疗疗效的预测价值。方法收集西南医科大学乳腺外科2018-01-31—2019-03-08接受新辅助化疗后可确认手术切除的55例女性乳腺癌患者资料,采用受试者工作曲线,将约登指数最大值对应的外周血LMR作为截断值,分为高、低比值组。并采用乳腺癌新辅助化疗后组织学评估评价系统(Miller-Payne分级系统)评价术后乳腺癌组织的病理治疗反应,统计分析两者间的关系。结果NAC疗效与肿瘤大小(χ^2=0.007,P=0.931)、淋巴结转移情况(χ^2=2.208,P=0.154)、组织分级(χ^2=0.931,P=0.335)、临床分期(χ~2=0.026,P=0.871)、病理分型(χ^2=5.519,P=0.063)、Ki-67水平(χ^2=0.004,P=0.953)无关联性;仅与LMR比值有关联性,外周血LMR高比例组(≥4.87)的新辅助化疗有效率为90.6%,高于低比例组(<4.87)的43.5%,差异有统计学意义,χ^2=14.420,P<0.001。多因素Logistic回归分析显示,化疗前高LMR是影响新辅助化疗的保护性因素,OR=0.073,95%CI为0.016~0.333,P=0.001。结论化疗前高外周血LMR患者新辅助化疗疗效可能更佳。

关键词：乳腺癌新辅助化疗淋巴细胞与单核细胞比值化疗反应预测因子

Mainchain conformation ordering self-assembly tailored room temperature phosphorescence emission

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Science China Chemistry 2025年第1期68卷 329-336页

作者： Yuzhu Li Yumeng Gao Feng Tian Yu Wang yuan Yao Shaoliang lin Xiang Ma Binbin Xu Shanghai Key Laboratory of Advanced Polymeric Materials Key Laboratory for Ultrafine Materials of Ministry of Education School of Materials Science and Engineering East China University of Science and Technology Shanghai Synchrotron Radiation Facility Shanghai Advanced Research Institute Chinese Academy of Sciences Key Laboratory for Advance Materials and Feringa Noble Prize Scientist Joint Research Centre Frontiers Science for Materiobiology and Dynamic Chemistry School of Chemistry and Molecular Engineering East China University of Science & Technology

Developing organic room-temperature phosphorescence （RTP） materials with a wide range of tunable-emission is significant in expanding the applications of RTP ***,we rationally designed amphiphilic alternating copolymers poly(1,2-bis（4-alkoxyphenyl）ethane-1,2-dione-alt-（ethylene glycol）x)(P（Bz-alt-EGx）) that combined the advantage of alternating benzil and EGxskeleton,and tunable mainchain *** a mainchain conformation ordering assembly （COA） process,P（Bz-alt-EGx） self-assembled into well-defined platelets,and such assemblies emitted blue RTP at ca.425 nm due to the ordered folded-chain conformation and confined *** contrast,traditional self-assembly （TA） of P（Bz-alt-EGx） obtained less ordered aggregates,such as asymmetric worms,vesicles,and rod-like *** resultant less ordered aggregates exhibited yellow-green RTP at ca.550 *** wide-tuning RTP emission in solution （between blue and yellow-green,over125 nm） is realized using the P（Bz-alt-EGx） alternating copolymers under the treatment of different self-assembly *** study uncovers a new strategy to tailor the RTP emission through different self-assembly pathways and holds great promise for the fabrication of advanced optical materials.

关键词： self-assembly conformation ordering alternating copolymer phosphorescence emission

双复杂条件下非倾斜叠加精确束偏移方法及应用Ⅰ——声波方程

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地球物理学报 2015年第1期58卷 267-276页

作者：黄建平袁茂林李振春岳玉波中国石油大学(华东)地球科学与技术学院地球物理系青岛266555 中石油东方地球物理公司物探技术研究中心河北涿州072750

近年来,油气勘探的重心正转向具有复杂地表和复杂地质体的双复杂区域.本文发展了一种精确的双复杂条件下基于地表倾角信息的非倾斜叠加束偏移方法,相对于传统束成像方法无需进行三方面处理:(1)高程静校正;(2)相位校正;(3)束中心与接收... 详细信息

近年来,油气勘探的重心正转向具有复杂地表和复杂地质体的双复杂区域.本文发展了一种精确的双复杂条件下基于地表倾角信息的非倾斜叠加束偏移方法,相对于传统束成像方法无需进行三方面处理:(1)高程静校正;(2)相位校正;(3)束中心与接收点之间关于速度和束出射角的近似替换,因而具有更高的成像精度.通过加拿大逆掩断层模型、中原油田断层模型及实际资料的偏移试算,并与传统束偏移及波动方程偏移成像结果对比可知:本文非近似束偏移方法在近地表、高陡倾等构造处的成像精度、反射界面成像振幅等方面优于传统的偏移方法,以此验证了本文非倾斜叠加精确束偏移方法的正确性、优越性及适应性.

关键词：双复杂倾角信息非倾斜叠加束偏移波动方程偏移

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负载离子液体纳米钯催化芳卤羰化反应

物理化学学报 2006年第10期22卷 1272-1276页

作者：林棋付海燕袁茂林陈华李贤均四川大学化学学院绿色化学与技术教育部重点实验室

研究了高分散性的负载离子液体纳米钯催化剂的制备及其催化芳卤羰化反应的性能.用XRD、HRTEM和XPS等方法对催化剂进行了表征,结果表明,钯组分处于高分散零价态,其平均粒径小于5nm,且催化剂表面存在一厚度适中的离子液体液膜,有利于提高... 详细信息

研究了高分散性的负载离子液体纳米钯催化剂的制备及其催化芳卤羰化反应的性能.用XRD、HRTEM和XPS等方法对催化剂进行了表征,结果表明,钯组分处于高分散零价态,其平均粒径小于5nm,且催化剂表面存在一厚度适中的离子液体液膜,有利于提高催化剂的稳定性;该催化剂对PhI、PhBr、PhCl的羰化反应的催化活性优于离子液体两相催化体系,在优化的反应条件下,碘苯的转化率可达99.3%,生成苯甲酸乙酯的转化频率(TOF)可高达4926h-1,反应产物中苯甲酸乙酯的选择性大于99%.

关键词：水溶性钯膦络合物芳卤羰化反应离子液体负载离子液体钯催化剂

“Zero‑Strain” NiNb_(2)O_(6) Fibers for All‑Climate Lithium Storage

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Nano-Micro Letters 2025年第1期17卷 348-360页

作者： Yan Zhao Qiang yuan Liting Yang Guisheng Liang Yifeng Cheng Limin Wu Chunfu lin Renchao Che College of Physics Donghua UniversityShanghai 201620People’s Republic of China School of Materials Science and Engineering Institute of Materials for Energy and EnvironmentQingdao UniversityQingdao 266071People’s Republic of China Laboratory of Advanced Materials Shanghai Key Laboratory of Molecular Catalysis and Innovative MaterialsAcademy for Engineering&TechnologyFudan UniversityShanghai 200438People’s Republic of China Zhejiang Laboratory Hangzhou 311100People’s Republic of China Inner Mongolia University Hohhot 010021People’s Republic of China

Niobates are promising all-climate Li^(+)-storage anode material due to their fast charge transport,large specific capacities,and resistance to electrolyte ***,their moderate unit-cellvolume expansion(generally 5%–10%)during Li^(+)storage causes unsatisfactory long-term ***,“zero-strain”NiNb_(2)O_(6) fibers are explored as a new anode material with comprehensively good electrochemical *** Li^(+)storage,the expansion of electrochemical inactive NiO_(6) octahedra almost fully offsets the shrinkage of active NbO_(6) octahedra through reversible O *** superior volume-accommodation capability of the NiO_(6) layers guarantees the“zero-strain”behavior of NiNb_(2)O_(6) in a broad temperature range(0.53%//0.51%//0.74%at 25//−10//60℃),leading to the excellent cyclability of the NiNb_(2)O_(6) fibers(92.8%//99.2%//91.1%capacity retention after 1000//2000//1000 cycles at 10C and 25//−10//60℃).This NiNb_(2)O_(6) material further exhibits a large reversible capacity(300//184//318 mAh g−1 at 0.1C and 25//−10//60℃)and outstanding rate performance(10 to 0.5C capacity percentage of 64.3%//50.0%//65.4%at 25//−10//60℃).Therefore,the NiNb_(2)O_(6) fibers are especially suitable for large-capacity,fast-charging,long-life,and all-climate lithium-ion batteries.

关键词： NiNb_(2)O_(6)porous fiber “Zero-strain”mechanism Electrochemical property Harsh-temperature operation Operando characterization

Locally Enhanced Flow and Electric Fields Through a Tip Effect for Efficient Flow‑Electrode Capacitive Deionization

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Nano-Micro Letters 2025年第2期17卷 1-17页

作者： Ziquan Wang Xiangfeng Chen yuan Zhang Jie Ma Zhiqun lin Amor Abdelkader Maria‑Magdalena Titirici Libo Deng College of Chemistry and Environmental Engineering Shenzhen UniversityShenzhen 518060People’s Republic of China Research Center for Environmental Functional Materials College of Environmental Science and EngineeringTongji University1239 Siping RoadShanghai 200092People’s Republic of China Department of Chemical and Biomolecular Engineering National University of SingaporeSingapore 117585Singapore Department of Engineering Faculty of Science and TechnologyBournemouth UniversityTalbot CampusFern BarrowPooleEngland BH125BBUK Institut de Chimie de Nice UniversitéCôte d’AzurUMR CNRS 727228 Av.Valrose06108 NiceFrance Department of Chemical Engineering Imperial College LondonSouth Kensington CampusExhibition RdLondon SW72AZUK

Low-electrode capacitive deionization(FCDI)is an emerging desalination technology with great potential for removal and/or recycling ions from a range of ***,it still suffers from inefficient charge transfer and ion transport kinetics due to weak turbulence and low electric intensity in flow electrodes,both restricted by the current ***,a new tip-array current collector(designated as T-CC)was developed to replace the conventional planar current collectors,which intensifies both the charge transfer and ion transport *** effects of tip arrays on flow and electric fields were studied by both computational simulations and electrochemical impedance spectroscopy,which revealed the reduction of ion transport barrier,charge transport barrier and internal *** the voltage increased from 1.0 to 1.5 and 2.0 V,the T-CC-based FCDI system(T-FCDI)exhibited average salt removal rates(ASRR)of 0.18,0.50,and 0.89μmol cm^(-2) min^(-1),respectively,which are 1.82,2.65,and 2.48 folds higher than that of the conventional serpentine current collectors,and 1.48,1.67,and 1.49 folds higher than that of the planar current ***,with the solid content in flow electrodes increased from 1 to 5 wt%,the ASRR for T-FCDI increased from 0.29 to 0.50μmol cm^(-2) min^(-1),which are 1.70 and 1.67 folds higher than that of the planar current ***,a salt removal efficiency of 99.89%was achieved with T-FCDI and the charge efficiency remained above 95%after 24 h of operation,thus showing its superior long-term stability.

关键词： Flow-electrode Capacitive deionization Current collector Tip effect Desalination