检索结果-内蒙古大学图书馆

Sulfhydryl-modified zeolite A with exceptional strontium adsorption selectivity

Science China Chemistry 2025年第5期68卷 1847-1858页

作者： Lingyi Li Lanxing Ren Dong Wang Junchang Chen Qi Guo Yuting Zhao Fuqiang Zhao Linwei He Jie Li Wenqi Zhang Lijuan Song Long Chen Lixi Chen Bin Wang Lin Zhu Tao Duan Zhifang Chai Shuao Wang State Key Laboratory of Radiation Medicine and Protection School for Radiological and Interdisciplinary Sciences (RAD-X)and Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education InstitutionsSoochow University School of Science Harbin Institute of Technology (Shenzhen) School of Chemistry and Chemical Engineering Hunan Province Key Laboratory for the Design and Application of Actinide ComplexesUniversity of South China Radioactive Waste Technology and Radiochemistry Research Department China Nuclear Power Technology Research Institute Co.Ltd. State Key Laboratory of Environment-Friendly Energy Materials School of National Defence Science & TechnologySouthwest University of Science and Technology

Efficient removal of trace radiostrontium from contaminated highly saline wastewater,such as seawater,remains a critical but challenging task due to the coexistence of large excess of hard cations like Na+,K+,Mg2+and particularly Ca2+,which shares similar physicochemical properties with Sr2+.Herein,we successfully boosted the selectivity by a sulfhydryl-functionalized NaA zeolite（SH-NaA） via ion exchange coupled with reinforced soft-soft interactions between sulfhydryl groups and Sr2+.Remarkably,SH-NaA achieved a 99.8%removal efficiency of Sr2+in the presence of a tenfold excess of Ca2+,with a distribution coefficient（Kd） of 4.98×10～5mL/*** effectiveness of SH-NaA in accurately capturing Sr2+was further validated by its superior dynamic adsorption performance in natural seawater compared to pristine NaA *** experiments highlighted SH-NaA’s exceptional Sr2+removal efficiency（qm=233.36 mg/g）,rapid adsorption kinetics（1 min）,superior decontamination depth（Kd=6.71×10～5mL/g）,and robust irradiation stability（400 kGy γ-ray）.X-ray photoelectron spectroscopy（XPS） and in situ Fouriertransform infrared（FTIR） analyses underscored the pivotal role of sulfhydryl groups in Sr2+*** functional theory（DFT） calculations revealed that the sulfhydryl-functionalized NaA zeolite exhibits the best selectivity toward Sr2+,with an interaction energy of-2.55 *** findings demonstrate that organic group functionalized zeolites hold significant promise for environmental remediation applications.

关键词： strontium selectivity adsorption seawater sulfhydryl NaA zeolite

来源：评论

学校读者我要写书评

暂无评论

Transition metal-based cathode catalysts for Li-CO_(2)batteries

引用

Journal of Energy Chemistry 2025年第5期104卷 225-253页

作者： Wenqing Ma Mingjuan Gao Jianping Ma Siyu Liu Lishan Yang Yahui Yang Xiangping Chen Tianzhen Jian Institute for Advanced Interdisciplinary Research(iAIR) Collaborative Innovation Center of Technology and Equipment for Biological Diagnosis and Therapy in Universities of ShandongSchool of Chemistry and Chemical EngineeringUniversity of JinanJinan 250022ShandongChina Key Laboratory of Chemical Biology&Traditional Chinese Medicine Research(Ministry of Education of China) National and Local Joint Engineering Laboratory for New Petrochemical Materials and Fine Utilization of ResourcesKey Laboratory of the Assembly and Application of Organic Functional Molecules of Hunan ProvinceKey Laboratory of Light Energy Conversion Materials of Hunan Province CollegeHunan Normal UniversityChangsha 410081HunanChina Nano-Science Center&Department of Chemistry University of CopenhagenCopenhagen 2100Denmark Jinan Preschool Education College Jinan 250307ShandongChina State Key Laboratory of Crystal Materials Shandong UniversityJinan 250100ShandongChina Shandong Sacred Sun Power Sources Co.Ltd. Qufu 273100ShandongChina

The Li-CO_(2)battery has been highly rated as an intriguing technique for balancing the carbon cycle for years,but it is still significantly challenged by the obstacles such as limited reversibility,sluggish kinetics,and poor energy ***,the design and development of advance catalysts that can enhance the kinetics and reversibility of the CO_(2)electrochemical cycling reactions are considered the imperative *** metal-based catalysts are widely considered appealing owing to their unfilled dorbitals,rich and adjustable valences,as well as *** this review,the working mechanism and the key issues of the CO_(2)electrochemical cycling reaction are discussed *** the strategies for composition and structure design of different type of transition metal-based catalysts are highlighted,including their benefits,limitations,and the ways to implement these ***,based on the pioneering research,the perspectives on the challenges and key points for the future development of cathode catalyst are proposed.

关键词： Li-CO_(2)battery Transition metal Cathode catalyst Catalytic mechanism

来源：评论

学校读者我要写书评

暂无评论

Metallic Co and FeNi alloy hybrid nanoparticles immobilized into N-doped graphene-like carbon nanosheets as an efficient bifunctional oxygen electrocatalyst for rechargeable Zn-air batteries

引用

Journal of Power Sources 2025年 645卷

作者： Tang, Qian Liu, Xiangni Yang, Duanguang Chen, Hongbiao Liu, Bei Yang, Mei Liu, Yijiang Li, Huaming College of Chemistry Xiangtan University Hunan Province Xiangtan411105 China Key Lab of Environment-Friendly Chemistry and Application in Ministry of Education Key Laboratory of Polymeric Materials & Application Technology of Hunan Province Key Laboratory of Advanced Functional Polymeric Materials of College of Hunan Province Xiangtan University Hunan Province Xiangtan411105 China

The development of efficient, low-cost and durable bifunctional oxygen electrocatalysts becomes a top priority for large-scale application of rechargeable Zn-air batteries (ZABs). Herein, we report the construction of durable and efficient bifunctional oxygen electrocatalyst by immobilizing metallic Co and FeNi alloy hybrid nanoparticles into N-doped, graphene-like carbon nanosheets (denoted as FeNi/Co-NCG) for rechargeable ZABs. Specifically, the N-enriched Schiff base-Co2+ coordination polymer (denoted as TP-Co) is first synthesized by Co2+-induced Schiff base reaction of 2,4,6-tris(4-aminophenylmethylamino)-1,3,5-triazine and picolinaldehyde, which is then mixed with the solvothermally generated melamine/Fe3+/Ni2+ complex followed by a two-step pyrolysis, yielding the FeNi/Co-NCG electrocatalyst. The resultant FeNi/Co-NCG electrocatalyst manifests not only the high bifunctional activity, i.e., a small potential gap (ΔE = 0.71 V) between Ej=10 (1.57 V, oxygen evolution reaction (OER) potential at a current density (j) of 10 mA cm−2) and E1/2 (0.86 V, oxygen reduction reaction (ORR) half-wave potential) in 0.1 M KOH solution, but also the excellent durability. Accordingly, aqueous and solid-state rechargeable ZABs assembled with the FeNi/Co-NCG air cathode display ultralong cycle life, i.e., 1393 h at 20 mA cm−2 for the aqueous rechargeable ZAB, and 120 h at 2 mA cm−2 and 70 h at 5 mA cm−2 for the solid-state rechargeable ZAB. © 2025 Elsevier B.V.

关键词： Nanosheets

来源：评论

学校读者我要写书评

暂无评论

High-temperature oxidation behavior and mechanism of W-doped (TaHfTi)C solid solution ceramics

引用

Journal of Materials Research and technology 2025年 36卷 9869-9880页

作者： Duzhong Zhu Xiaopeng Hu Sai Liu Junyao Wu Jinwei Guo Qian Wen Shuo Han Wang Zhu Key Laboratory of Key Film Materials & Application for Equipment (Hunan Province) School of Materials Science and Engineering Xiangtan University Xiangtan 411105 Hunan China Key Laboratory of Low Dimensional Materials and Application Technology of Ministry of Education School of Materials Science and Engineering Xiangtan University Xiangtan 411105 Hunan China

(TaHfTi)C solid solution ceramics doped with 0–40 mol% W are prepared using spark plasma sintering (SPS). Isothermal oxidation tests are conducted on W-doped ceramics at 800–1200 °C. The high-temperature oxidation behavior and mechanism of W-doped (TaHfTi)C solid solution ceramics at 800–1200 °C are investigated. The oxidation kinetics of the three ceramics follow the parabolic law, with the oxidation rate constant increasing in the order: W0> W20> W40, indicating a dependence of oxidation resistance on W content. During oxidation, a dense protective oxide layer forms on the W-doped ceramics, composed of multicomponent complex oxides such as Ta 8 W 9 O 47 , Hf 6 Ta 2 O 17 , and HfTiO 4 . The W40 specimen exhibits the highest oxidation resistance, which can be attributed to the formation of a dense network structure created by the outward diffusion of Ti- and Hf-containing oxides and the inward diffusion of oxygen, effectively preventing further oxidation of the substrate.

关键词： W-doped (TaHfTi)C solid solution ceramics Spark plasma sintering High-temperature oxidation behavior Oxidation mechanism

来源：评论

学校读者我要写书评

暂无评论

Optimization design of welding parameters of key components of car body based on finite element 5

Optimization design of welding parameters of key components ...

引用

2024 5th International Conference on Advanced Materials and Intelligent Manufacturing, ICAMIM 2024

作者： Li, Lina Fa, Ping Sun, Hongchang He, Chuan Qiao, Zhiliang Department of Automobile Engineering Tianjin Transportation Technical College Tianjin China Huaiyuan County Vocational and Technical School Anhui Province Bengbu City China School of Mechanical Engineering Tianjin University of Technology and Education Tianjin China Tianjin Key Laboratory of Intelligent Robot Technology and Application Enterprises Tianjin China

The characteristics of the welding heat source, the morphology of the molten pool, the formation mechanism of the weld, and the amount of heat input have an important and direct influence on the welding quality and performance of the joint. At present, the empirical curve that depends on the experimental results or the calculation formula of statistics cannot comprehensively evaluate the impact of welding on the mechanical properties of the whole structure. Therefore, this research is based on the finite element analysis technique of Simufact Welding software and analyzes the evolution of the temperature field, stress field, and the deformation of the residual stress in the welding process, and provides a powerful tool and a lot of support for welding technology. The aim of the study is to develop an accurate numerical simulation method for the weld temperature field and a dynamic simulation analysis system for the weld stress field and deformation. 2025 Published under licence by IOP Publishing Ltd.

关键词： Residual stresses

来源：评论

学校读者我要写书评

暂无评论

Early prediction of preeclampsia from clinical, multi-omics and laboratory data using random forest model

引用

BMC Pregnancy and Childbirth 2025年第1期25卷 1-15页

作者： Zhao, Qiang Li, Jia Diao, Zhuo Zhang, Xiao Feng, Suihua Hou, Guixue Xu, Wenqiu Zhao, Zhiguang Qiu, Zhixu Yang, Wenzhi Zhou, Si Tian, Peirun Zhang, Qun Chen, Weiping Li, Huahua Xiao, Gefei Qin, Jie Hu, Liqing Li, Zhongzhe Lin, Liang Wang, Shunyao Gao, Ruyun Huang, Wuyan Ruan, Xiaohong Zhang, Sufen Zhang, Jianguo Zhao, Lijian Zhang, Rui Department of Obstetrics and Gynecology Jiangmen Central Hospital Guangdong Province Jiangmen 529030 China Clinical Transformation and Application Key Lab for Obstetrics and Gynecology Pediatrics and Reproductive Medicine of Jiangmen Guangdong Province Jiangmen 529030 China Clin Lab Hebei Industrial Technology Research Institute of Genomics in Maternal & Child Health BGI Genomics Hebei Province Shijiazhuang 050011 China BGI Genomics Guangdong Province Shenzhen 518083 China Institute of Medical Genetics Zhuhai Center for Maternal and Child Health Care Guangdong Province Zhuhai 519000 China Department of Prevention and Health Care Zhuhai Center for Maternal and Child Health Care Guangdong Province Zhuhai 519000 China Hunan Provincial Key Laboratory of Regional Hereditary Birth Defects Prevention and Control Changsha Hospital for Maternal & Child Health CareAffiliated to Hunan Normal University Hunan Province Changsha 410007 China School of Public Health Hebei Province Key Laboratory of Environment and Human Health Hebei Medical University Hebei Province Shijiazhuang 050017 China School of Public Health Hebei Medical University Shijiazhuang 050017 China Medical Technology College Hebei Medical University Shijiazhuang 050017 China Division of Maternal-Fetal Medicine Shenzhen Baoan Women’s and Children’s Hospital Guangdong Province Shenzhen 518102 China

Background: Predicting preeclampsia (PE) within the first 16 weeks of gestation is difficult due to various risk factors, poorly understood causes and likely multiple pathogenic phenotypes of preeclampsia. Objectives: In this study, we aimed to develop prediction models for early-onset preeclampsia (EPE) and late-onset preeclampsia (LPE) respectively using clinical data, metabolome and proteome analyses on plasma samples and laboratory data. Methods: We retrospectively recruited 56 EPE, 50 LPE patients and 92 normotensive controls from three tertiary hospitals and used clinical and laboratory data in early pregnancy. Models for EPE and LPE were fitted with the use of patient’ clinical, multi-omics and laboratory data. Results: By comparing multi-omics and laboratory test variables between EPE, LPE and healthy controls, we identified sets of differentially expressed biomarkers, including 49 and 33 metabolites, 28 and 36 proteins as well as 5 and 7 laboratory variables associated with EPE and LPE respectively. Using the random forest algorithm, we developed a prediction model using seven clinical factors, seven metabolites, five laboratory test variables. The model yielded the highest accuracy for EPE prediction with good sensitivity (87.5%, 95% confidence interval [CI]: 67.64%-97.34%) and specificity (94.1%, 95% CI: 80.32%-99.28%). We also developed a prediction model that exhibited high accuracy in separating LPE from controls (sensitivity: 66.67%, 95% CI: 43.03%-85.41%;specificity: 94.12%, 95% CI: 80.32%-99.28%) using seven clinical factors, five metabolites and eight proteins. Conclusion: Our study has identified a set of significant omics and laboratory features for PE prediction. The established models yielded high prediction performance for preeclampsia risk from clinical, multi-omics and laboratory information. © The Author(s) 2025.

关键词： laboratory data Metabolome Preeclampsia Proteome Random forest

来源：评论

学校读者我要写书评

暂无评论

Performance of a novel ultra-durable hollow UHPC slab reinforced with prestressed Fe-SMA bars

引用

Advances in Structural Engineering 2025年

作者： Zhao, Yifan Zhao, Xiao-Ling Dong, Zhiqiang Cui, Chushi Zhao, Zhian Shi, Caijun Department of Civil and Environmental Engineering Hong Kong Polytechnic University Hong Kong Key Laboratory of Concrete and Prestressed Concrete Structures of Ministry of Education Southeast University Nanjing China Key Laboratory for Green & Advanced Civil Engineering Materials and Application Technology of Hunan Province International Science and Technology Innovation Centre for Green & Advanced Civil Engineering Materials of Hunan Province Key Laboratory of Building Safety and Energy Efficiency of the Ministry of Education College of Civil Engineering Hunan University Changsha China

This paper presents a novel type of hollow ultra-high-performance concrete (UHPC) slab reinforced with iron-based shape memory alloy (Fe-SMA) to enhance its performance, while a hollow UHPC slab strengthened with conventional steel is employed as reference. The shape memory effect of Fe-SMA is activated through the autoclave curing with temperature of 200°C. The flexural performance and anti-cracking ability of the hollow UHPC slab are investigated through four-point bending tests and 3D digital image correlation (DIC) measurements. The findings demonstrate the utilization of Fe-SMA modifies the failure mode of hollow UHPC slab by decelerating crack propagation compared to those reinforced with conventional steel. Hollow UHPC slab reinforced with Fe-SMA exhibit improved crack resistance (by about 40%), enhanced peak load (by about 65%) and improved deformability (by 20%) in comparison to the reference group. Fe-SMA and UHPC show higher compatibility from the aspect of ductility by comparing it with ordinary concrete. Finally, the calculation methods of flexural capacity are proposed, which offers valuable guidance for practical engineering. The incorporation of Fe-SMA presents promising prospects for enhancing both flexural performance and anti-cracking ability of hollow UHPC slab. © The Author(s) 2025.

关键词： Ultra-high performance concrete

来源：评论

学校读者我要写书评

暂无评论

Enhancing the durability of concrete with construction and demolition waste aggregate through its functionalization with phase change materials (paraffin)

引用

Cement and Concrete Composites 2025年 162卷

作者： Jia, Zhiyou Cunha, Sandra Aguiar, José Shi, Caijun Department of Civil Engineering University of Minho Campus of Azurém Guimarães4800-058 Portugal Key Laboratory for Green & Advanced Civil Engineering Materials and Application Technology of Hunan Province College of Civil Engineering Hunan University Changsha410082 China

Incorporating construction and demolition waste aggregate (DW) into concrete addresses environmental concerns by reducing the demand for virgin materials and diverting waste from landfills. However, the high porosity of DW negatively impacts the durability of concrete. In this work, DW was functionalized by impregnating it with paraffin to fill its inherent pores. Additionally, the phase change characteristics of paraffin were utilized to partially infiltrate the interfacial transition zone pores, thereby minimizing the connected porosity within the concrete. This work focuses on the durability of concrete containing DW and functionalized DW, examining factors such as chloride ion penetration, sulfate magnesium attack, freeze-thaw cycles, and carbonation resistance. The findings reveal that concrete with 100 % functionalized DW achieved a 31.5 % improvement in durability, exhibited zero carbonation depth, and demonstrated excellent resistance to freeze-thaw cycles, highlighting the effectiveness of this approach in enhancing concrete performance. © 2025 Elsevier Ltd

关键词： Concrete aggregates

来源：评论

学校读者我要写书评

暂无评论

Boosted high-temperature capacitive energy storage in D-A-D type semiconductor/polymer composite via constructing physical cross-linking and electronic trapping

引用

Composites Part A: Applied Science and Manufacturing 2025年 196卷

作者： Yang, Xiwen Luo, Hang Chen, Sheng Peng, Jiajun He, Guanghu Guo, Ru Zhang, Dou Powder Metallurgy Research Institute State Key Laboratory of Powder Metallurgy Central South University Hunan Changsha410083 China Department of Mechanical and Automation Engineering The Chinese University of Hong Kong N.T. Shatin999077 Hong Kong Key Laboratory of Polymeric Materials and Application Technology of Hunan Province College of Chemistry Xiangtan University Hunan Xiangtan411105 China

Nowadays, with the development of hybrid electric vehicles, aerospace, underground oil and gas exploration, and other fields, the demand for high-temperature dielectric energy storage equipment has rapidly increased. Although engineering aromatic polymers with high glass transition temperatures (Tg) have been developed, it is extremely urgent to solve the problem of the sharp decline in energy storage performance caused by the exponentially increased leakage current under high temperatures and electric fields. This work incorporates a semiconductor molecule with donor–acceptor-donor configuration (DPP-S) into the PEI matrix to achieve significantly enhanced high-temperature capacitive performance. The dense physical cross-linking networks are formed by the electrostatic interaction between the positively charged phenyl group in PEI and the electron-donating thiophene group in DPP-S, as well as the hydrogen bonding interaction between the amide group in DPP-S and the −C=O group in the PEI chain. This molecular interface effect improves mechanical strength to boost the breakdown strength and introduces trap sites capturing charge carriers to suppress leakage current. Consequently, excellent energy storage performance is achieved in PEI-DPP-S-0.2 wt%, e.g., discharge energy density of 4.87 J cm−3 at 150 °C and 3.45 J cm−3 at 200 °C with high discharge efficiency of 90 %, surpassing lots of high-temperature energy storage polymers. Finally, PEI-DPP-S-0.2 wt% exhibits stable performances during ultralong 105 charge–discharge cycles in harsh environments (200 MV m−1 and 200 °C) and prospects for large-scale preparation. This work further deepens the insight of high-temperature dielectric energy storage enhanced by molecular interface engineering. © 2025

关键词： Proven reserves

来源：评论

学校读者我要写书评

暂无评论

Dual rejuvenation mechanism of aged SBS modified asphalt using colza oil and dodecenyl succinic anhydride rejuvenators

引用

Construction and Building Materials 2025年 482卷

作者： Liang, Chenghao Li, Qishi Sun, Changjun Zhang, Henglong Key Laboratory for Green & Advanced Civil Engineering Materials and Application Technology of Hunan Province Hunan University Hunan Changsha410082 China Hunan Provincial Engineering Research Center for construction solid wastes recycling Hunan Changsha410205 China

To respond to the concept of green and sustainable development, and to enhance the utilization of aged SBS modified asphalt (SBSMA) in road construction, a novel SBSMA rejuvenator based on colza bio-oil (CO) and dodecenyl succinic anhydride (DDSA) was developed in this study. The rejuvenation effects of CO and DDSA on SBSMA used individually and in combination were analyzed and evaluated. The findings indicate that CO exhibits a superior rejuvenation impact on the physical properties of asphalt compared to DDSA, although its effectiveness in improving high-temperature properties is limited. The physical properties of the CO/DDSA rejuvenated SBSMA are closest to those of the original SBSMA. Compared with the original SBSMA, the penetration and softening points of the CO/DDSA rejuvenated SBSMA increased by 2.08 % and 11.41 %, respectively, while its ductility decreased by 11.97 %. The incorporation of DDSA allowed the rejuvenated asphalt to recover the phase angle plateau region. Within the temperature range of 30–90 ℃, the complex shear modulus index and phase angle index of the CO/DDSA rejuvenated SBSMA are both around 1, indicating consistency between the temperature curves of its G* and δ and those of the original SBSMA. CO exhibits a strong ability to replenish light components of aged asphalt, while DDSA can chemically react with SBS segments to form ester bonds, thereby repairing the degraded SBS network. The combined application of the two rejuvenators provides a dual rejuvenation mechanism that not only disperses asphaltene aggregates formed during ageing but also reconstructs the network structure of SBSMA. © 2025 Elsevier Ltd

关键词： Bio-oil Dual rejuvenation Microscopic properties Network structure Rejuvenated SBS modified asphalt

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：