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Kinetically and thermodynamically expediting elementary steps via high-valence Cr-incorporated of nickel selenide for water electrolysis

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Nano Research 2024年第3期17卷 1199-1208页

作者： Huafeng Fan Dongxu Jiao Jinchang Fan dewen wang Bilal Zaman Wei Zhang Lei Zhang Weitao Zheng Xiaoqiang Cui State Key Laboratory of Automotive Simulation and Control School of Materials Science and EngineeringKey Laboratory of Automobile Materials of MOEJilin Provincial International Cooperation Key Laboratory of High-Efficiency Clean Energy MaterialsElectron Microscopy CenterJilin UniversityChangchun 130012China College of Chemistry Jilin UniversityChangchun 130012China

Designing high-performance electrocatalysts toward hydrogen evolution reaction(HER)and oxygen evolution reaction(OER)is essential to reduce the activation barrier and optimize free adsorption energy of reactive ***,we report that incorporating high-valence Cr into NiSe_(2)(Cr_(x)Ni_(1-x)Se_(2))kinetically and thermodynamically expedites elementary steps of both HER and *** as-prepared Cr_(0.05)Ni_(0.95)Se_(2) catalyst displays excellent HER and OER activities,with low overpotentials of 89 and 272 mV at the current density of 10 mA·cm^(-2)(j10),respectively,and remains stable during operation for 30 h.A low cell voltage of only 1.59 V is required to drive j10 in alkaline *** situ Raman spectroscopy reveals that Cr incorporation facilitates the formation of NiOOH active species during the OER ***,theoretical explorations demonstrate that high-valence Cr incorporation efficiently accelerates water dissociation kinetics and improves H*adsorption during HER process,lowering the activation barrier of OER and optimizing the adsorption energy of oxygen-based intermediate,thus kinetically and thermodynamically enhancing the intrinsic performance of NiSe_(2) for over water *** strategy provides a new horizon to design transition metal based electrocatalysts in the clean energy field.

关键词： nickel selenide electrocatalytic water splitting high-valence Cr density functional theory(DFT)calculation

Vacancy engineering induced reaction kinetics enhancement of cobalt metaphosphate for pH-universal hydrogen evolution

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Nano Research 2024年第5期17卷 3879-3887页

作者： Yuting Chen Tian Meng Zhicai Xing Yueying Yan Yang Yang Bohan Yao dewen wang Xiurong Yang State Key Laboratory of Electroanalytical Chemistry Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchun 130022China School of Applied Chemistry and Engineering University of Science and Technology of ChinaHefei 230026China

Developing efficient pH-universal hydrogen evolution reaction(HER)catalysts is critical in the field of water electrolysis,however,which is severely hampered by the sluggish kinetics in alkaline ***,a ruthenium(Ru)incorporation induced vacancy engineering strategy is firstly proposed to precisely construct oxygen vacancy(V_(O))-riched cobalt-ruthenium metaphosphate(CRPO)for high-efficiency pH-universal *** V_(O) modifies the electronic structure,improves the superficial hydrophilic and gas spillover capacity,it also reduces the coordination number of Ru atoms and regulates the coordination *** calculations indicate that Ru tends to adsorb H_(2)O and H^(*),whereas V_(O) tends to adsorb OH^(-),which greatly promotes the H_(2)O adsorption and the dissociation of HO-H ***,CRPO-2 exhibits remarkable HER performance,the mass activity is about 18.34,21.73,and 38.07 times higher than that of Pt/C in acidic,neutral,and alkaline media,respectively,at the same time maintain excellent *** findings may pave a new avenue for the rational design of electrocatalysts toward pH-universal water electrolysis.

关键词： cobalt metaphosphate pH-universal hydrogen evolution reaction(HER) vacancy engineering low-coordination atoms oxygen vacancy

Atomic Dispersed Hetero‑Pairs for Enhanced Electrocatalytic CO_(2)Reduction

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Nano-Micro Letters 2024年第1期16卷 55-67页

作者： Zhaoyong Jin Meiqi Yang Yilong Dong Xingcheng Ma Ying wang Jiandong Wu Jinchang Fan dewen wang Rongshen Xi Xiao Zhao Tianyi Xu Jingxiang Zhao Lei Zhang David J.Singh Weitao Zheng Xiaoqiang Cui State Key Laboratory of Automotive Simulation and Control School of Materials Science and EngineeringKey Laboratory of Automobile Materials of MOEElectron Microscopy CenterJilin UniversityChangchun 130012People’s Republic of China Key Laboratory of Photonic and Electronic Bandgap Materials Ministry of Educationand College of Chemistry and Chemical EngineeringHarbin Normal UniversityHarbin 150025People’s Republic of China College of Chemistry Jilin UniversityChangchun 130012People’s Republic of China Department of Physics and Astronomy and Department of Chemistry University of MissouriColumbiaMO 65211USA

Electrochemical carbon dioxide reduction reaction(CO_(2)RR)involves a variety of intermediates with highly correlated reaction and ad-desorption energies,hindering optimization of the catalytic *** example,increasing the binding of the*COOH to the active site will generally increase the*CO desorption *** this relationship may be expected to dramatically improve the intrinsic activity of CO_(2)RR,but remains an unsolved ***,we addressed this conundrum by constructing a unique atomic dispersed hetero-pair consisting of Mo-Fe di-atoms anchored on N-doped carbon *** system shows an unprecedented CO_(2)RR intrinsic activity with TOF of 3336 h−1,high selectivity toward CO production,Faradaic efficiency of 95.96%at−0.60 V and excellent *** calculations show that the Mo-Fe diatomic sites increased the*COOH intermediate adsorption energy by bridging adsorption of*COOH *** the same time,d-d orbital coupling in the Mo-Fe di-atom results in electron delocalization and facilitates desorption of*CO ***,the undesirable correlation between these steps is *** work provides a promising approach,specifically the use of di-atoms,for breaking unfavorable relationships based on understanding of the catalytic mechanisms at the atomic scale.

关键词： CO_(2)reduction reaction Atomic dispersed catalyst Hetero-diatomic pair Ad-desorption energy Linear scaling relation

基于二次分解双向门控单元新型电力系统超短期负荷预测

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电力科学与工程 2024年第3期40卷 1-9页

作者：王德文安涵华北电力大学控制与计算机工程学院河北保定071003

在新型电力系统中,电力负荷随机性和波动性较强,现有预测方法难以对其实现高精度预测。为此,提出一种基于二次分解和双向门控循环单元的超短期负荷预测模型。首先,针对电力负荷的强随机性和强波动性,利用自适应噪声完备经验模态分解对... 详细信息

在新型电力系统中,电力负荷随机性和波动性较强,现有预测方法难以对其实现高精度预测。为此,提出一种基于二次分解和双向门控循环单元的超短期负荷预测模型。首先,针对电力负荷的强随机性和强波动性,利用自适应噪声完备经验模态分解对电力负荷历史序列进行初步分解,使负荷序列更加平稳。随后,对初步分解得到的强非平稳分量运用连续变分模态分解进行二次分解,降低其预测难度。最后,为充分学习电力负荷的时序特征,在预测过程构建基于双向门控循环单元的超短期电力负荷预测模型。实验结果表明,该模型相较于现有优秀预测模型有更高的预测精度。

关键词：新型电力系统超短期负荷负荷预测二次分解双向门控循环单元

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中国老年人群抑郁特征与政策启示

中国农村卫生事业管理 2024年第3期44卷 209-213,161页

作者：吴政宇王德文厦门大学公共事务学院福建厦门361000

目的了解我国60岁及以上老年人群抑郁特征与变化趋势,为改善老年人心理健康水平提供依据。方法采用中国家庭追踪调查(CFPS)2016、2018与2020年三波次调查数据,应用8题简版流调中心抑郁量表(CES-D 8)对老年人抑郁特征与变化趋势进行分析... 详细信息

目的了解我国60岁及以上老年人群抑郁特征与变化趋势,为改善老年人心理健康水平提供依据。方法采用中国家庭追踪调查(CFPS)2016、2018与2020年三波次调查数据,应用8题简版流调中心抑郁量表(CES-D 8)对老年人抑郁特征与变化趋势进行分析。结果共得到3020例有效样本,其中男性1568(51.92%)人,女性1452(48.08%)人。分析结果显示在2016—2020年间老年人群抑郁评分呈逐年增长趋势(F=4.98,P<0.01)。女性老人抑郁评分均高于男性(t_(2016)=9.31,P<0.001;t_(2018)=9.36,P<0.001;t_(2020)=8.82,P<0.001),农村老人抑郁评分高于城市老人(t_(2016)=7.25,P<0.001;t_(2018)=7.93,P<0.001;t_(2020)=7.84,P<0.001),文盲老人抑郁评分高于非文盲老人(t_(2016)=-9.68,P<0.001;t_(2018)=-10.97,P<0.001;t_(2020)=-7.71,P<0.001),患慢性病老人抑郁评分高于未患慢性病老人(t_(2016)=-10.95,P<0.001;t_(2018)=-6.75,P<0.001;t_(2020)=-5.84,P<0.001),独居老人抑郁评分高于非独居老人(t_(2016)=-6.10,P<0.001;t_(2018)=-6.59,P<0.001;t_(2020)=-6.73,P<0.001)。结论我国老年人群抑郁问题逐年加重,女性、农村、文盲、患慢性病与独居老年人抑郁问题更为明显。降低老年人群抑郁风险,改善老年人心理健康水平,需重点关注女性、文盲、患慢性疾病等老年弱势人群。

关键词：老年人抑郁 CES-D 8 心理健康城乡差异政策启示

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基于ROS的巡逻机器人系统设计

无线互联科技 2024年第12期21卷 69-72页

作者：胡兵王德文刘欣西京学院陕西西安710100 西安理工大学高科学院陕西咸阳713300

针对厂房、银行和大型超市等需要人工巡逻的场所,文章设计了一款基于ROS的巡逻机器人自主导航系统。文章将ROS系统部署到基于树莓派硬件开发的巡逻机器人上,对巡逻机器人的环境感知模块、导航模块和监控模块等进行研究设计。该系统使用... 详细信息

针对厂房、银行和大型超市等需要人工巡逻的场所,文章设计了一款基于ROS的巡逻机器人自主导航系统。文章将ROS系统部署到基于树莓派硬件开发的巡逻机器人上,对巡逻机器人的环境感知模块、导航模块和监控模块等进行研究设计。该系统使用同步定位与建图(Simultaneous Localization and Mapping,SLAM)技术,通过激光雷达和里程计实现定位、建图与导航功能。实验结果表明,该系统定位收敛速度快,构建地图精度高,路径规划稳定性好,能替代人类巡逻。

关键词： ROS 巡逻机器人 SLAM Gmapping算法自适应蒙特卡罗定位算法

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替罗非班联合大黄䗪虫丸对老年急性缺血性脑卒中患者血清PARK7及Sestrin2水平的影响

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中国实用神经疾病杂志 2024年第4期27卷 483-487页

作者：王德文唐丽于慧静山东省文登整骨医院山东威海264400

目的探讨替罗非班联合大黄䗪虫丸治疗老年急性缺血性脑卒中(AIS)患者的疗效及对血清人帕金森蛋白(PARK7)、Sestrin2水平的影响。方法选取2020-08—2022-03山东省文登整骨医院收治的老年AIS患者116例,随机分为观察组(n=58)和对照组(n=5... 详细信息

目的探讨替罗非班联合大黄䗪虫丸治疗老年急性缺血性脑卒中(AIS)患者的疗效及对血清人帕金森蛋白(PARK7)、Sestrin2水平的影响。方法选取2020-08—2022-03山东省文登整骨医院收治的老年AIS患者116例,随机分为观察组(n=58)和对照组(n=58),对照组采用替罗非班治疗,观察组在对照组的基础上联合大黄䗪虫丸治疗,从入院当日开始,干预为期4周。比较2组患者入院当日及治疗4周后治疗有效率、血流平均流速(TMV)、收缩期峰值流速(PSV)、阻力指数(RI),血清同型半胱氨酸酶(Hcy)、PARK7、2Sestrin水平,以及不良反应发生率。结果治疗4周后观察组血清PARK7、Sestrin2、Hcy水平、RI[分别为(14.47±2.74)μg/L、(11.01±1.64)μg/L、(11.08±1.69)μmol/L、0.62±0.18]均低于对照组[分别为(19.15±2.68)μg/L、(14.37±1.67)μg/L、(16.60±2.73)μmol/L、0.75±0.15](P<0.05),观察组血流TMV[(46.37±6.17)cm/s]、PSV[(77.16±8.41)cm/s]水平均高于对照组[分别为(37.72±5.16)cm/s、(63.72±7.21)cm/s](P<0.05)。2组有效率分别为91.38%、74.14%,观察组治疗有效率高于对照组(P<0.05)。2组不良反应发生率分别为24.14%、8.62%,观察组不良反应发生率低于对照组(P<0.05)。结论替罗非班联合大黄䗪虫丸能够有效改善AIS患者神经功能及脑部血流灌注情况,降低血清PARK7、Sestrin2水平,提升有效率,减少并发症,加快康复进程。

关键词：急性缺血性脑卒中替罗非班大黄䗪虫丸人帕金森蛋白 Sestrin2 血清老年

白花蛇舌草诱导活性氧类物质抑制慢性髓系白血病K562细胞增殖

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中南医学科学杂志 2024年第2期52卷 193-197页

作者：唐丽于慧静王德文山东省文登整骨医院山东文登264400

目的探讨白花蛇舌草(HDW)诱导活性氧类物质对慢性髓系白血病(CML)K562细胞增殖的影响。方法流式细胞法检测HDW作用下K562细胞内活性氧(ROS)水平。将K562细胞分为对照组、HDW组、N-乙酰-L-半胱氨酸组(NAC组)和HDW+NAC组,观察各组细胞ROS... 详细信息

目的探讨白花蛇舌草(HDW)诱导活性氧类物质对慢性髓系白血病(CML)K562细胞增殖的影响。方法流式细胞法检测HDW作用下K562细胞内活性氧(ROS)水平。将K562细胞分为对照组、HDW组、N-乙酰-L-半胱氨酸组(NAC组)和HDW+NAC组,观察各组细胞ROS、活力、形态、增殖和细胞周期分布情况,Western blotting法检测细胞周期相关蛋白和磷酸化磷脂酰肌醇3-激酶(p-PI3K)、磷酸化丝氨酸苏氨酸激酶(p-Akt)蛋白表达情况。结果HDW能提高K562细胞内ROS水平(P<0.05)。对照组、NAC组细胞含大量拒染细胞且形态无明显变化,HDW组、HDW+NAC组拒染细胞减少,着色细胞增多,有染色质聚集和细胞核膜崩解现象。与对照组相比,HDW组细胞内ROS、G1期占比、p21和p53蛋白表达升高,S期占比和细胞周期素D1、细胞周期素依赖蛋白激酶4、p-PI3K、p-Akt蛋白表达降低(P<0.05);NAC干预能部分逆转HDW作用效果(P<0.05)。结论HDW能诱导活性氧类物质升高来降低K562细胞增殖能力,与细胞周期阻滞、调节PI3K/Akt通路活性有关。

关键词：慢性髓系白血病 K562细胞白花蛇舌草细胞增殖活性氧

Designing high-efficiency light-to-thermal conversion materials for solar desalination and photothermal catalysis

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Journal of Energy Chemistry 2023年第4期79卷 581-600页

作者： Hanjin Jiang Xinghang Liu dewen wang Zhenan Qiao Dong wang Fei Huang Hongyan Peng Chaoquan Hu State Key Laboratory of Superhard Materials Key Laboratory of Automobile Materials of Ministry of EducationSchool of Materials Science and EngineeringJilin Provincial International Cooperation Key Laboratory of High-Efficiency Clean Energy MaterialsJilin UniversityChangchun 130012JilinChina State Key Laboratory of Inorganic Synthesis and Preparative Chemistry College of ChemistryJilin UniversityChangchun 130012JilinChina College of Chemical Engineering Northeast Electric Power UniversityJilin 132012JilinChina Department of Orthopedics China Japan Union Hospital of Jilin UniversityChangchun 130033JilinChina School of Physics and Electronic Engineering Hainan Normal UniversityHaikou 571158HainanChina

Light-to-thermal conversion materials(LTCMs)have been of great interest to researchers due to their impressive energy conversion capacity and wide range of applications in biomedical,desalination,and synergistic *** the limited advances in existing materials(metals,semiconductors,π-conjugates),researchers generally adopt the method of constructing complex systems and hybrid structures to optimize performance and achieve multifunctional ***,the development of LTCMs is still in its infancy as the physical mechanism of light-to-thermal conversion is *** this review,we proposed design strategies for efficient LTCMs by analyzing the physical process of light-tothermal ***,we analyze the nature of light absorption and heat generation to reveal the physical processes of light-to-thermal ***,we explain the light-to-thermal conversion mechanisms of metallic,semiconducting andπ-conjugated LCTMs,and propose new material design strategies and performance improvement ***,we summarize the challenges and prospects of LTCMs in emerging applications such as solar water evaporation and photothermal catalysis.

关键词： Light-to-thermal conversion Solar energy conversion Material design Performance improvement Solar water evaporation Photothermal catalysis