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Dual-selective detection of CO and CH_(4) based on hierarchical porous In_(2)O_(3) nanoflowers with Pd modification

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Journal of Materiomics 2022年第3期8卷 545-555页

作者： Liuyang Han Saisai Zhang Bo Zhang Bowen Zhang Yan Wang hari bala Zhanying Zhang School of Materials Science and Engineering Cultivating Base for Key Laboratory of Environment-friendly Inorganic Materials in University of Henan ProvinceHenan Polytechnic UniversityJiaozuo454000China State Key Laboratory Cultivation Bases for Gas Geology and Gas Control(Henan Polytechnic University) Jiaozuo454000China

The timely and effective detection of CO and CH_(4) is critical as the explosion and poisoning of them can bring serious potential risks to coal *** this study,combining metal oxide semiconductors with noble metals offers a promising route to achieve this *** porous Pd modified In_(2)O_(3) nanoflowers were prepared via two-step hydrothermal method and exhibited dual detection of CO and CH_(4) at different *** material has been characterized by a number of advanced techniques and the results indicate that Pd modified In_(2)O_(3) are hierarchical porous nanoflowers structure consisting of pores of approximately 1.8 nm in *** sensing properties results show that the Pd modified In_(2)O_(3) based sensor exhibits temperature-dependent dual selectivity detection of CO at 280℃ and CH_(4) at 340℃.In addition,the Pd modified In_(2)O_(3) sensor display higher sensing response of CO(5.824 for 100 ppm)and CH_(4)(1.162 for 1000 ppm),fast response and recovery time,as well as good repeatability,which demonstrating the great potential for practical *** good gas-sensing performance are mainly attributed to the unique flower-like structure,the presence of porosity on the sample surface,and the catalytic effect of Pd.

关键词： Hierarchical porous structure Pd/In_(2)O_(3)nanoflowers Gas sensor Dual selectivity CO and CH_(4)

Improved triethylamine sensing properties of fish-scale-like porous SnO_(2) nanosheets by decorating with Ag nanoparticles

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Journal of Materiomics 2022年第2期8卷 518-525页

作者： Jingyi Zhang Bowen Zhang Shujuan Yao Hongyuan Li Can Chen hari bala Zhanying Zhang School of Materials Science and Engineering Henan Polytechnic UniversityJiaozuo454000China Cultivating Base for Key Laboratory of Environment-friendly Inorganic Materials in University of Henan Province Henan Polytechnic UniversityJiaozuo454000China

Three dimensional(3D)porous nanostructures assembled by low-dimensional nanomaterials are widely applied in gas sensor according to porous structure which can facilitate the transport of gas *** this work,fish-scale-like porous SnO 2 nanomaterials assembled from ultrathin nanosheets with thick-ness of 16.8 nm were synthesized by a facile hydrothermal *** Ag nanoparticles were decorated on the surface of SnO_(2) nanosheets via one-step method to improve their gas-sensing *** sensing properties of pristine SnO_(2) and Ag/SnO_(2) nanosheets were investigated *** deco-rating with Ag nanoparticles,the characteristics of SnO_(2) based sensor for triethylamine detection were significantly ***,the Ag/SnO_(2) based sensor with Ag content of 2 at%exhibited the highest triethylamine sensing sensitivity at optimum work temperature of 170?*** improved sensing properties of Ag/SnO_(2) sensors were attributed to the sensitizing actions of Ag nanoparticles as well as the unique hierarchical porous architecture.

关键词： Fish-scale-like porous structure SnO_(2)nanosheetes Ag nanoparticles Triethylamine Gas sensor

The rapid detection for methane of ZnO porous nanoflakes with the decoration of Ag nanoparticles

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Frontiers of Materials Science 2021年第4期15卷 621-631页

作者： Liuyang HAN Saisai ZHANG Bo ZHANG Bowen ZHANG Yan WANG hari bala Zhanying ZHANG School of Materials Science and Engineering Cultivating Base for Key Laboratory of Environment-friendly Inorganic Materials in University of Henan ProvinceHenan Polytechnic UniversityJiaozuo 454000China State Key Laboratory Cultivation Bases for Gas Geology and Gas Control(Henan Polytechnic University) Jiaozuo 454000China

Realizing the real-time detection of CH4 is important for the safety of human life.A facile hydrothermal method was used to synthesize Ag nanoparticlesdecorated ZnO porous nanoflakes(PNFs)in this *** characterization results confirmed that Ag nanoparticles had been decorated in ZnO nanoflakes with the thickness of~10 *** gas-sensing properties of Ag-decorated ZnO nanoflakes were also *** the gas-sensing performances of ZnO were remarkably improved by decorating Ag nanoparticles on the surface of ZnO nanoflakes,the response of the Agdecorated ZnO sensor to 3000 ppm CH4 is almost 1.3 times as high as that of pristine ZnO *** obtained Ag/ZnO sensor exhibits better long-term stability and shorter response recovery time(5/38 s)in the comparison with pristine ZnO,demonstrating the possibility for the actual detection of *** enhanced CH4 sensing performance can be attributed to the synergism between the unique hierarchical porous structure and the sensitizing actions utilized by the Ag nanoparticles.

关键词： hierarchical structure ZnO porous nanoflake Ag nanoparticle methane sensitivity

Regulatory role of peroxynitrite in advanced glycation end products mediated diabetic cardiovascular complications

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World Journal of Diabetes 2024年第3期15卷 572-574页

作者： Asis bala Pharmacology and Drug Discovery Research Laboratory Division of Life SciencesInstitute of Advanced Study in Science and TechnologyGuwahati 781035AssamIndia

The Advanced Glycation End Products(AGE)binding with its receptor can increase reactive oxygen species(ROS)generation through specific signaling *** effect of superoxide(O2-)and O2-mediated ROS and reactive nitrogen species depends on their concentration and location of *** oxide(NO)has anti-inflammatory and anticoagulant properties and a vasodilation effect,but NO can be deactivated by reacting with O_(2)^(-).This reaction between NO and O2-produces the potent oxidant ONOO−.Therefore,ONOO-'s regulatory role in AGEs in diabetic cardiovascular complications must considered as a regulator of cardiovascular complications in diabetes.

关键词： Diabetes Cardiovascular complication Advanced glycation end products Reactive oxygen species Reactive nitrogen species Peroxynitrite

金属卤化物钙钛矿量子点的制备及其光催化应用研究进展

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无机盐工业 2023年第2期55卷 36-44页

作者：李宏渊孟哈日巴拉河南理工大学材料科学与工程学院河南焦作454000 河南理工大学环境友好型无机材料河南省高校重点实验室培育基地河南焦作454000

利用太阳能光催化技术生产清洁燃料、降解污染物及转化高附加值产品,是解决当前能源短缺和环境污染问题的有效途径。随着对金属卤化物钙钛矿的深入研究,成功开发出一系列能够制备出成分和形貌控制精确、产物均匀性好、结晶度高的钙钛矿... 详细信息

利用太阳能光催化技术生产清洁燃料、降解污染物及转化高附加值产品,是解决当前能源短缺和环境污染问题的有效途径。随着对金属卤化物钙钛矿的深入研究,成功开发出一系列能够制备出成分和形貌控制精确、产物均匀性好、结晶度高的钙钛矿量子点的合成方法,使钙钛矿量子点应用到光催化领域中。综述了热注入法、配体辅助再沉淀法、溶剂热法、微波辅助法等金属卤化物钙钛矿量子点的合成方法及金属卤化物钙钛矿量子点在光催化析氢、光催化还原二氧化碳、光催化合成有机物以及光催化降解有机物等方面的研究进展,最后对金属卤化物钙钛矿光催化剂的发展前景进行了展望。

关键词：金属卤化物钙钛矿量子点光催化

Microstructures and hydrogen storage properties of as-cast and copper-mould-cast LaMg_4Ni alloys

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Journal of Rare Earths 2014年第5期32卷 434-438页

作者：范燕平彭显云刘宝忠宿太超哈日巴拉 School of Materials Science and Engineering Henan Polytechnic University Cultivating Base for Key Laboratory of Environment-friendly Inorganic Materials in University of Henan Province Henan Polytechnic University

Phase compositions, morphologies and hydrogen storage properties of the as-cast and copper-mould-cast LaMgaNi alloys were studied. The dehydriding onset temperature of the as-cast alloy hydride was about 500 K, which was at least 50 K higher than that of the copper-mould-cast one, and the copper-mould-cast alloy hydride had a faster dehydriding rate compared with as-cast one. Additionally, the copper-mould-cast alloy could uptake 2.85 wt.% hydrogen, which was 95.0% of saturated hydrogen storage capac- ity at room temperature. While only 1.80 wt.% hydrogen （60% of saturated capacity） was absorbed for the as-cast alloy under the same conditions. The reversible hydrogen storage capacities and plateau hydrogen pressures of the two alloys were close. X-ray dif- fractions and scanning electron microscopy results indicated that similar thermodynamic property of the two alloys should be ascribed to the same hydrogen storage phase, Mg and MgzNi. The better hydrogen sorption kinetics of copper-mould-cast alloy should be as- cribed to the more uniform phase distribution compared with that of the as-cast one.

关键词： hydrogen storage copper-mould-cast La-Mg-Ni alloy kinetics thermodynamics rare earths

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染料敏化太阳电池介孔薄膜电极的研究进展

无机盐工业 2011年第5期43卷 11-14页

作者：原光瑜哈日巴拉河南理工大学材料科学与工程学院河南焦作454003

介绍了染料敏化太阳电池多孔二氧化钛薄膜电极的结构、工作原理及其制备方法,并进一步阐述了减小电荷复合速率、改进薄膜电极性能、提高器件的光电转化效率的方法,主要涉及多孔二氧化钛薄膜电极的复合、掺杂和表面包覆等表面改性处理技... 详细信息

介绍了染料敏化太阳电池多孔二氧化钛薄膜电极的结构、工作原理及其制备方法,并进一步阐述了减小电荷复合速率、改进薄膜电极性能、提高器件的光电转化效率的方法,主要涉及多孔二氧化钛薄膜电极的复合、掺杂和表面包覆等表面改性处理技术。指出了基于有序二氧化钛薄膜电极、柔性二氧化钛薄膜电极的染料敏化太阳电池和叠层薄膜结构的太阳电池高效的转化效率和应用方便的特点,并在此基础上展望了未来的研究方向。

关键词：染料敏化太阳电池介孔二氧化钛薄膜结构优化

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梳子状ZnO纳米棒阵列的制备及表征

人工晶体学报 2009年第2期38卷 492-496页

作者：哈日巴拉刘占连杨海滨付乌有河南理工大学材料学院焦作454003 吉林大学超硬材料国家重点实验室长春130012

采用水热法在HTlc-ZnAlCO3纳米片上对称生长出平行排列的梳子状ZnO纳米棒。利用X射线衍射(XRD)、场发射扫描电子显微镜(FESEM)对得到的样品进行表征。揭示ZnO纳米棒的可控生长规律,在此基础上对其生长机理进行初步探讨。

关键词： ZnO 纳米棒梳子状对称生长水热法

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纳米二氧化钛薄膜制备方法研究进展

无机盐工业 2008年第12期40卷 1-3页

作者：于艳辉哈日巴拉河南理工大学材料科学与工程学院河南焦作454003 中国科学院长春应用化学研究所高分子物理与化学国家重点实验室

二氧化钛纳米晶薄膜优异的性能使其成为研究焦点,制备二氧化钛薄膜有着重要的现实意义。介绍了近年来国内外二氧化钛薄膜制备技术的研究进展,主要涉及高活性二氧化钛光催化薄膜的制备(制备方法包括溶胶-凝胶法、丝网印刷法、激光化学气... 详细信息

二氧化钛纳米晶薄膜优异的性能使其成为研究焦点,制备二氧化钛薄膜有着重要的现实意义。介绍了近年来国内外二氧化钛薄膜制备技术的研究进展,主要涉及高活性二氧化钛光催化薄膜的制备(制备方法包括溶胶-凝胶法、丝网印刷法、激光化学气相沉积法、水热结晶法、电泳法等),负载二氧化钛薄膜常用的载体,以及在环境保护等方面的应用研究现状,并指出以后的研究方向。

关键词：纳米二氧化钛薄膜载体