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聚集体(英文) 2023年第3期4卷 94-101页

作者： Shujun Wu Yujiao Yang Yao Cheng Shuodong wang Zhibiao Zhou Pei Zhang Xinqi Zhu baodui wang Hua Zhang Sheng Xie Zebing Zeng Ben Zhong Tang Shenzhen Research Institute of Hunan University Nanshan DistrictShenzhenState Key Laboratory of Chemo/Biosensing and ChemometricsCollege of Chemistry and Chemical EngineeringHunan UniversityChangshaChina Shanghai Institute of Optics and Fine Mechanics Chinese Academy of SciencesShanghaiChina University of Chinese Academy of Sciences BeijingChina State Key Laboratory of Applied Organic Chemistry and Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province Lanzhou UniversityGansuChina State Key Laboratory of Environmental Geochemistry Institute of GeochemistryChinese Academy of SciencesGuiyangChina AIE Institute Guangzhou Development DistrictHuangpuChina School of Science and Engineering Shenzhen Key Laboratory of Functional Aggregate MaterialsThe Chinese University of Hong KongShenzhenChina

A“turn-on”fluorescent sensing strategy was developed for ultrasensitive detection of heavy metal mercury ion(Hg2+)directly in *** utilized an aqueous soluble aggregation-induced emission(AIE)-active probe,named 1,1,2,2-tetrakis(4-(1Htetrazol-5-yl)phenyl)ethene(TPE-4TA),composing of a luminescent tetraphenylene core and multiple anionic tetrazolate *** probe retained dark when molecularly dissolved in ***,mercury ions can ligate with multiple tetrazolate groups to form infinite coordination polymer particles spontaneously,thus inducing a fluorogenic AIE response for in situ ***,by embedding this AIE sensing molecules in a hydrophilic polyvinyl alcohol substrate,the resulting hydrogel film allowed in situ detection of Hg^(2+)on a laser-induced fluorescence analysis setup in aqueous *** strategy worked effectively in common aqueous environments with pH from 4 to 7.5 and showed high sensitivity(limit of detection down to 0.38 ppb/1.9 nM),good selectivity and a wide linearity range for *** work may lead to a reliable and promising platform for on-site environmental water analysis.

关键词： aggregation-induced emission heavy metal detection hydrogel

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Nanofibrils in 3D aligned channel arrays with synergistic effect of Ag/NPs for rapid and highly efficient electric field disinfection

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Chinese Chemical Letters 2021年第10期32卷 3143-3148页

作者： Zi Yang Hongyuhang Ni Pu Liu Hanwen Liu Ke Yang Zhengze Zhang baodui wang Xiangkai Li Fengjuan Chen State Key Laboratory of Applied Organic Chemistry Lanzhou UniversityLanzhou 730000China Ministry of Education Key Laboratory of Cell Activities and Stress Adaptations School of Life SciencesLanzhou UniversityLanzhou 730000China

The disinfection of waterborne pathogens from drinking water is extremely important for human *** countless efforts have been devoted for drinking water inactivation,challenges still exist in terms of relative high energy consumption and complicated to implement and ***,silver nanoparticles anchoring wood carbon(Ag NPs/WC)membrane is developed as cost-effective,high flux,scalable filter for highly efficient electric field disinfection of *** electric field of 4 V voltage,the designed membrane achieved more than 5 log(99.999%)disinfection performance for different model bacteria,including Escherichia coli(***),Enterococcus faecalis(***),Salmonella enterica serovar Typhimirium(***)and Bacillus subtilis(***)with a high flux of 3.8 x 103 L m^(-2)h^(-1),extremely low energy consumption of 2 J L^(-1)m^(-2)and fantastic durability(7 days).The high disinfection performance of Ag NPs/WC membrane is attributed to the synergistic disinfection of carbon nanofibrils,Ag nanoparticles as well as the low tortuous structure of the channels in wood *** Ag NPs/WC membrane presents a promising strategy for point-of-use drinking water electric field disinfection treatment.

关键词： Synergistic effect Electric field disinfection High throughput Low energy consumption Nanofibrils

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White Emission magnetic nanoparticle as a chemosensor for Sensitive Ratiometric Detection,Degradation of ClO- and SCN- in Aqueous Solution

White Emission magnetic nanoparticle as a chemosensor for Se...

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中国化学会第九届全国无机化学学术会议

作者： Lihua Zhi Zhiyi wang baodui wang Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province and State Key Laboratory of Applied Organic Chemistry Lanzhou University Gansu

The fluorescent chemosensors for detecting single anion have been largely synthesized. However, the simultaneous detection and degradation of multiple anions remain a major challenge. Hypochlorite ion（ClO-） and thiocyanate ion（SCN-） are commonly used in a range of industries and the daily life. Although ClO- and SCN- play critical roles in many processes, an excess level of ClO- and SCN- can lead to a wide range of diseases. Therefore, development of a method for accurate, simple, and rapid detection and degradation of SCN- and ClO- is significant in environmental, medicine and the life sciences. Ratiometric fluorescent probes allow the measurement of emission intensities at two different wavelengths, which provides a built-in correction for the environmental effects. At present, only a few ratiometric fluorescent sensors have been reported for detection of ClO- with moderate success, and all of them can not work in pure water solution, which limit their potential application in environment and bio-logical systems. Moreover, there is not report ratiometric fluorescent sensor for detection SCN- or simultaneous detection of Cl O- and SCN- in water. Herein, a white emission nanoprobe was synthesized by Coumarin-Rhodamine CR1-Eu complex coordinated with dipicolinic acid（dpa）-PEG-Fe3O4 nanoparticles for the selective detection of Cl O- and SCN- ions on the controlling by a logic gate. This nanoprobe shows a marked rose red to violet emission color change in response to ClO-, a reversible violet to rose red emission color change in response to SCN-, high Cl O- and SCN- selectivity and sensitivity with a detection limit of 0.037 and 0.250 nM, respectively. Furthermore, the SCN- and ClO- can degrade simultaneously through the redox reaction between ClO-and SCN-. Due to exhibiting superparamagnetism at room temperature, this nanoprobe can be easily separated from the detected solution. Hence, our detection system not only could prevent itself pollution but also degrade conta

关键词： white emission magnetic nanoparticle ratiometric detection ClO- SCN-

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Highly Efficient and Selective Degradation of Methylene Blue from Mixed Aqueous Solution by Using Monodisperse CuFe2O4 Nanoparticles

Highly Efficient and Selective Degradation of Methylene Blue...

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中国化学会第九届全国无机化学学术会议

作者： Lingyun wang Zhiyi wang baodui wang Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province and State Key Laboratory of Applied Organic Chemistry Lanzhou University Gansu

The design and synthesis of nanocatalysts for highly efficient and selective degradation the harmful pollutants from complicated waste water are extremely desirable for human health and environmental protection today. Nowadays, common effluent treatment methods including adsorption, photocatalytic degradation, chemical oxidation, membrane filtration, flocculation, and electro oxidation are difficult to remove the specific dye. Thus it is necessary to find desirable nanocatalyst which not only is able to degrade the pollutant organic dyes with high efficiency and low lost, but also realizes selective degradation, separation and recovery of raw material. Methylene blue（MB） is a worldwide water contaminant that is currently without effective and selective agent to degrade it. Spinel-type Cu Fe2O4 is one of the most excellent spinel-type oxides for simultaneous catalytic removal of nitrogen oxides and diesel particulates. Cu Fe2O4 nanoparticles（NPs） as catalysts still have not been explored to selectively degarade the MB of waste water up to now, although they have exhibit great potential applications in various fields. With this in mind, we present herein the design and synthesis of a monodisperse Cu Fe2O4 nanocatalyst for selective and rapid degradation of methylene blue（MB）. In the presence of other pollutants such as methylene orange（MO）, rhodamine B（RB） and rhodamine 6G（R6G）, MB was still rapidly degraded. More importantly, the Cu Fe2O4 nanocatalyst has a very low leaching loss and excellent reusability for ten catalysis cycles in the degradation of MB, indicating that Cu Fe2O4 nanocatalyst could overcome the drawbacks of homogeneous catalysts. Since the current method is simple and flexible to create recyclable catalyst with high stability and excellent selectivity toward dye degradation, this nanocatalyst is an important tool in catalysis, and the selective degradation and recycling of raw material in wastewater.

关键词： CuFe2O4 nanocatalyst methylene blue degradation selective

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Pd Nanoparticles Encapsulated in the Magnetic Carbon Nanocages: An Efficient Nanoenzyme for Selective Detection and Multicolor Imaging of Cancer Cells

Pd Nanoparticles Encapsulated in the Magnetic Carbon Nanocag...

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中国化学会第九届全国无机化学学术会议

作者： Gaosong Chen Weisheng Liu baodui wang Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province State Key Laboratory of Applied Organic Chemistry and Key Laboratory of Special Function Materials and Structure DesignMinistry of Education Lanzhou University Gansu

Molecular recognition based rapid and simple techniques for identifying subtypes of cancer cells are essential in molecular medicine. However, how to improve the sensitivity and accuracy for early diagnosis of this disease remains a major challenge. Recently, developing both novel artificial enzyme labeling and the corresponding signal amplification system motivates researchers due to the high need for rapid, highly sensitive, and selective monitoring of species or events associated with cancer cells. Here we have developed a novel fluorescent artificial enzyme-linked immunoassay system by utilizing magnetic carbon nanocages-supported Pd NPs（Pd NPs/MCNC） as the catalyst and NNPH as fluorescent and color change reporter molecule. In such biosensor platform, Pd NPs（＜3 nm） confined in the magnetic carbon nanocages present excellent catalytic activity and high stability against metal agglomeration and leaching during a number of recycles in cleavage reaction and its turnover frequency（TOF） reaches up to 2163（h-1）. More importantly, the catalytic product, NPH, could produce significant changes in both color（from colorless to jade-green） and fluorescence（from blue to green）, through the ICT process, and it has been successfully applied to use for selective detection and multicolor imaging of He La cells that overexpress FRs. Such features enable detection system to avoid false positive result and to provide a prospective testing approach for accurate cancer diagnosis. Our findings demonstrate that this immunoassay system could be used as a power tool for application to self-calibrated fluorescence-guided biological assays and clinical diagnoses.

关键词： PdNPs carbon nanocages catalyst multicolor Imaging cancer cell

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Size and shape-dependent peroxidase-like catalytic activity of MnFe2O4 Nanoparticles and their colorimetric detection of target cancer cell

Size and shape-dependent peroxidase-like catalytic activity ...

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中国化学会第九届全国无机化学学术会议

作者： Yunhua Peng Zhiyi wang Weisheng Liu Fengjuan Chen baodui wang Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province and State Key Laboratory of Applied Organic Chemistry Lanzhou University Gansu Department of gynaecology and obstetrics Lanzhou University Second Hospital

Nanomaterials with enzyme-like activity have received considerable attention over the past few decades because of their unique size, shape, composition and structure-dependent properties. Generally, the catalytic activity of nanocrystal catalysts depends strongly on their chemical composition, size, and shape. As an important transition-metal oxide, Mn Fe2O4 nanoparticles exhibit enhanced peroxidase-like activity. However, there have been few attempts to investigate the catalytic properties of peroxidase nanomimetics with different size and shape and little is known about the effects of different size and shape on biocatalysis with Mn Fe2O4. Herein, we report four different size and shape of Mn Fe2O4 nanoparticles（NPs） prepared by a hydrothermal procedure. Additionally, the size and shape- dependent peroxidase-like activity of these NPs was first explored by using 3,3’,5,5’-tetramethyl-benzidine and H2O2 as peroxidase substrates. The results showed that the peroxidase-like activities of the Mn Fe2O4 NPs were size and shape- dependent and followed the order of 4 nm（spherical）＞ 18 nm（plate-like）＞ 27 nm（near-cubic）＞ 16nm（spherical）;this order was closely related to their surface-to-volume ratio and atom arrangement manners. This suggests that selective fabrication of peroxidase nanomimetics with different size and shape is very important to harness their catalytic activities. In addition FA- and FITC-conjugated Mn Fe2O4 NPs can be employed in colorimetric detection and imaging of target cancer cells. Moreover, this assay possesses excellent specificity and sensitivity for the detection of clinically important target breast cancer cells. Our work will facilitate the mechanistic understanding and technological applications of peroxidase nanomimetics for biotechnology, environmental chemistry, and medicine.

关键词： peroxidase-like catalytic activity magnetic nanoparticle colorimetric detection cancer cell imaging

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基于学科交叉与“双碳”背景的新型化学实验的设计——以“一种纳米管光催化剂的合成、表征及其光催化实验”为例

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云南化工 2023年第4期50卷 117-120页

作者：胡国文汪宝堆兰州大学功能有机分子化学国家重点实验室化学化工学院甘肃兰州730000

为使学生对纳米材料的制备方法、表征技术、图谱解析、异质结构、光催化应用等前沿知识与技术有更深入、更全面地了解,设计了一维管状光催化剂降解染料的综合实验。通过简单、低成本的静电纺丝结合光诱导还原方法制备了Pd/CuO/Co_(3)O_... 详细信息

为使学生对纳米材料的制备方法、表征技术、图谱解析、异质结构、光催化应用等前沿知识与技术有更深入、更全面地了解,设计了一维管状光催化剂降解染料的综合实验。通过简单、低成本的静电纺丝结合光诱导还原方法制备了Pd/CuO/Co_(3)O_(4)三元异质结光催化剂。利用扫描电子显微镜、透射电子显微镜、X射线光电子能谱仪和X射线衍射仪等确定了催化剂的形貌、结构、元素组成及价态等。通过亚甲基蓝光催化降解实验探讨了催化剂的光催化性能。实验步骤简单、综合性强、涉及知识点多,有利于学生系统掌握纳米材料的制备、表征及光催化实验等知识。

关键词： Pd/CuO/Co_(3)O_(4)纳米管异质结光催化亚甲基蓝化学实验

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荧光光谱法检测食品中添加变质食用油含量研究

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实验技术与管理 2015年第8期32卷 45-46页

作者：左伟王飞汪宝堆兰州大学化学化工学院甘肃兰州730000

针对我国的食品安全方面暴露出的监管乏力、检测缺少方法和综合利用不足等诸多问题,用荧光光谱法对地沟油的检测鉴定方法进行研究,以期能为相关人员和机构研究提供一定帮助。结果表明,用荧光光谱法检测鉴定地沟油比其他方法更准确、灵... 详细信息

针对我国的食品安全方面暴露出的监管乏力、检测缺少方法和综合利用不足等诸多问题,用荧光光谱法对地沟油的检测鉴定方法进行研究,以期能为相关人员和机构研究提供一定帮助。结果表明,用荧光光谱法检测鉴定地沟油比其他方法更准确、灵敏、省时。

关键词：食品检测地沟油荧光光谱检测食用植物油

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用“钻石”教学模型打造面向未来的分析化学课程教学创新实践

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化工高等教育 2023年第6期40卷 130-137页

作者：郭文婷汪宝堆赵丽马妍兰州交通大学化学化工学院甘肃兰州730070 兰州大学化学化工学院甘肃兰州730000

为了提升学生的自主学习能力,分析化学课程教学团队构建了“钻石”教学模型,围绕教学目标、课程考核、知识传输途径三个层面,从学习目标、学习场景、学习内容、学习活动和学习结果评价五个要素开展教学创新实践。教师在教学中融入课程... 详细信息

为了提升学生的自主学习能力,分析化学课程教学团队构建了“钻石”教学模型,围绕教学目标、课程考核、知识传输途径三个层面,从学习目标、学习场景、学习内容、学习活动和学习结果评价五个要素开展教学创新实践。教师在教学中融入课程思政元素,充分利用现代信息技术,引入最新学术成果,并将课程知识与生活实际紧密联系起来,真正做到了以学生的发展为中心,实现了探究知识、提升能力和提高素养的目标。

关键词：分析化学教学创新 “钻石”教学模型

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高阶能力导向进阶式研究性学习模式探索与实践——以“药物化学”课程为例

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大学化学 2023年第12期38卷 51-60页

作者：郭文婷赵丽汪宝堆马妍赵仲丽兰州交通大学化学化工学院兰州730070 兰州大学化学化工学院兰州730000

针对药物化学课程教学存在的问题,提出高阶能力导向进阶式研究性学习模式的教学创新。采用P-MASE研究性学习模型与进阶式教学活动设计相结合,创建以高阶能力为导向的“案例趣研+创研活动+项目挑战”进阶式教学活动,搭建教学场景,融入教... 详细信息

针对药物化学课程教学存在的问题,提出高阶能力导向进阶式研究性学习模式的教学创新。采用P-MASE研究性学习模型与进阶式教学活动设计相结合,创建以高阶能力为导向的“案例趣研+创研活动+项目挑战”进阶式教学活动,搭建教学场景,融入教学内容。学生在教师指导下通过P-MASE(即引入问题Problem-寻找方法Method-科学分析Analysis-有效解决Solution-效果评价Evaluation五个环节)推进药物化学研究性学习,完成理论构建,同时促进提升学生科研能力和创新思维。通过分析药物化学课程达成度证实,该模式能够有效提高课程高阶性、创新性和挑战度。

关键词：药物化学高阶能力导向研究性学习模型进阶式教学活动

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