A highly sensitive and selective sensor for trace uranyl (VI) ion based on a graphene-coated carbon paste electrode modified with ion imprinted polymer
作者：
Wang, Zhimei;Zhang, Di;Xiao, Xilin* ;Su, Changlin;Li, Zhiyang;...
期刊：
Microchemical Journal ,2020年155:104767 ISSN：0026-265X
通讯作者：
Xiao, Xilin;Hu, Nan;Wang, Hongqing
作者机构：
[Wang, Zhimei; Xiao, XL; Hu, Nan; Xiao, Xilin] Univ South China, Sch Resource & Environm & Safety Engn, Hengyang City 421001, Hunan, Peoples R China.;[Wang, Hongqing; Su, Changlin; Xiao, Xilin; Liao, Lifu; Xue, Jinhua; Peng, Pengcheng; Xiao, XL; Wang, HQ; Li, Zhiyang; Zhang, Di] Univ South China, Sch Chem & Chem Engn, Sch Publ Hlth, Hunan Prov Key Lab Design & Applicat Actinide Com, Hengyang City 421001, Hunan, Peoples R China.;[Xiao, Xilin] Hunan Univ, State Key Lab Chemo & Biosensing & Chemometr, Changsha 410082, Hunan, Peoples R China.
通讯机构：
[Xiao, XL; Hu, N; Wang, HQ] U;[Xiao, Xilin] H;Univ South China, Sch Resource & Environm & Safety Engn, Hengyang City 421001, Hunan, Peoples R China.;Univ South China, Sch Chem & Chem Engn, Sch Publ Hlth, Hunan Prov Key Lab Design & Applicat Actinide Com, Hengyang City 421001, Hunan, Peoples R China.;Hunan Univ, State Key Lab Chemo & Biosensing & Chemometr, Changsha 410082, Hunan, Peoples R China.
关键词：
Uranium;Graphene;Ion imprinting;Electrochemical sensor;Uranium tailings pond
摘要：
Uranium is a kind of natural radionuclide, when the human body is exposed to higher uranium radioactive conditions, it will cause adverse effects on their health. Therefore, the analysis and detection of uranyl ions in the environment is a vital prerequisite for preventing uranium pollution. A bipolar bidentate ligand isophthalaldehyde-tetrapyrrole (IPTP) was first synthesized and a study was characterized by its structure and spectral properties. In the present work, an innovative electrochemical sensor by using IPTP as a ligand for uranyl (VI) ion (UO2 2+), α-methacrylic acid as functional monomer and uranyl (VI) ion as a template, a relatively stable structure was constructed by stirring at 35 °C. Then, the polymer sol-gel was acquired by combining sol-gel processing under alkaline conditions, which was added dropwise to the surface of a carbon paste electrode (CPE) which had been modified with graphene (GR). The introduction of graphene allowed the reduction peak current of uranyl ions to be increased significantly. Under the optimum experimental conditions (pH=5 and the adsorption time=20 min), the ion-imprinted sensor was designed by adopting differential pulse voltammetry (DPV) for the sensing of uranyl (VI) ions. The detection technique successfully achieved the determination of uranyl ion in the concentration range 1.0 × 10−10 mol L − 1 to 1.0 × 10−7 mol L − 1, in practical soil samples with excellent repeatability and recovery (97.3%-102.9%). © 2020 Elsevier B.V.
语种：
英文
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Synthesis of bipolar tetradentate ligand and determination of fructose 1,6-diphosphate by resonance light scattering of its supramolecular polymer
作者：
Li, Zhiyang;Xiao, Xilin* ;Su, Changlin;Hu, Nan;Nie, Changming;...
期刊：
Journal of Radioanalytical and Nuclear Chemistry ,2020年323(1):431-438 ISSN：0236-5731
通讯作者：
Liao, Lifu;Xiao, Xilin;Liu, Yong
作者机构：
[Su, Changlin; Liao, Lifu; Nie, Changming; Li, Zhiyang; Zhang, Di] Univ South China, Sch Chem & Chem Engn, Hunan Prov Key Lab Design & Applicat Actinide Com, Hengyang City 421001, Hunan, Peoples R China.;[Wang, Zhimei; Xiao, Xilin; Hu, Nan; Xiao, XL; Liu, Yong] Univ South China, Hunan Prov Engn Res Ctr Radioact Control Technol, Sch Resource & Environm & Safety Engn, Hengyang City 421001, Hunan, Peoples R China.;[Wang, Zhimei; Xiao, Xilin; Hu, Nan; Xiao, XL; Liu, Yong] Univ South China, Hunan Prov Engn Technol Res Ctr Uranium Tailings, Hengyang City 421001, Hunan, Peoples R China.;[Xiao, Xilin] Hunan Univ, State Key Lab Chemo & Biosensing & Chemometr, Changsha 410082, Hunan, Peoples R China.
通讯机构：
[Liao, Lifu; Xiao, XL; Liu, Y] U;[Xiao, Xilin] H;Univ South China, Sch Chem & Chem Engn, Hunan Prov Key Lab Design & Applicat Actinide Com, Hengyang City 421001, Hunan, Peoples R China.;Univ South China, Hunan Prov Engn Res Ctr Radioact Control Technol, Sch Resource & Environm & Safety Engn, Hengyang City 421001, Hunan, Peoples R China.;Univ South China, Hunan Prov Engn Technol Res Ctr Uranium Tailings, Hengyang City 421001, Hunan, Peoples R China.
关键词：
Fructose 1,6-diphosphate;Bipolar tetradentate schiff base;Supramolecular polymer;Uranyl;Resonance light scattering
摘要：
In this paper, a novel method was established for determination of fructose 1,6-diphosphate (F-1,6-BP) based on resonance light scattering (RLS), and a type of bipolar tetradentate schiff base H4L was synthesized. The study showed that under the optimization condition with the ligand concentration of 5nmolmL−1, pH 6.5, the reaction temperature of 25°C, the reaction time of 30min, RLS intensity had good linearity with the concentration of F-1,6-BP within the range of 0.4–5.0nmolmL−1, the limit of detection was 0.16nmolmL−1 and the relative standard deviation (RSD) was 1.83%. In vitro feasibility study, four groups of medical injections and two groups of human urine were analyzed, the RSD of six parallel experiments was approximately 2%, and the recovery value changed from 98.0 to 102.5%. As shown herein, this method has high sensitivity, good precision and recovery. © 2019, Akadémiai Kiadó, Budapest, Hungary.
语种：
英文
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A europium (III) complex-based surface fluorescence sensor for the determination of uranium (VI)
作者：
Jiang, Min;Xiao, Xilin* ;He, Bo;Liu, Yong;Hu, Nan;...
期刊：
Journal of Radioanalytical and Nuclear Chemistry ,2019年321(1):161-167 ISSN：0236-5731
通讯作者：
Xiao, Xilin;Liao, Lifu
作者机构：
[Xiao, XL; Liao, Lifu; Su, Changlin; Jiang, Min; Xiao, Xilin; Li, Zhiyang; He, Bo] Univ South China, Sch Chem & Chem Engn, Hunan Prov Key Lab Design & Applicat Actinide Com, Hengyang 421001, Hunan, Peoples R China.;[Xiao, Xilin; Hu, Nan; Liu, Yong] Univ South China, Sch Resource & Environm & Safety Engn, Hunan Prov Key Lab Green Dev Technol Extremely Lo, Hengyang 421001, Hunan, Peoples R China.
通讯机构：
[Xiao, XL; Liao, LF; Xiao, Xilin] U;Univ South China, Sch Chem & Chem Engn, Hunan Prov Key Lab Design & Applicat Actinide Com, Hengyang 421001, Hunan, Peoples R China.;Univ South China, Sch Resource & Environm & Safety Engn, Hunan Prov Key Lab Green Dev Technol Extremely Lo, Hengyang 421001, Hunan, Peoples R China.
关键词：
acetaminosalol;cation;europium;uranium;acidity;Article;chemical interaction;chemical reaction;chemical structure;concentration (parameter);covalent bond;fluorescence;limit of detection;microtechnology;room temperature;spectrofluorometry;synthesis
摘要：
In this paper, we report a method for the determination of uranium (VI) based on the using of a surface fluorescence sensor containing a europium (III) complex. The sensor was prepared by immobilizing the Eu(III)-salophen complex on a glass slide surface through Si–O covalent bonds. The sensor can generate strong surface fluorescence as a result of the Cation–Cation Interaction between U (VI) and Eu(III). We used this property to design a surface fluorescence sensing method to detect U (VI). Under suitable conditions, the linear range was 0.02–5nmolmL−1 and the detection limit was 8 × 10−3nmolmL−1. This method was successfully used in determine U (VI) in real samples with a recovery rate between 99.5 and 103.5%. © 2019, Akadémiai Kiadó, Budapest, Hungary.
语种：
英文
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黑曲霉磁性生物吸附剂制备及其吸附低浓度铀性能研究
作者：
成彬;李乐;丁德馨;廖琪;卢炜;...
期刊：
应用化工 ,2018年47(2):219-223 ISSN：1671-3206
作者机构：
[成彬; 李乐; 卢炜] 南华大学公共卫生学院;[成彬; 李乐; 卢炜; 丁德馨; 戴仲然; 胡南; 张辉] 南华大学;[廖琪] 南华大学化学化工学院
关键词：
黑曲霉;纳米Fe_3O_4;磁性生物吸附剂;铀酰离子;吸附性能
摘要：
以亲铀真菌黑曲霉和纳米Fe_3O_4为原料,制备了一种新型黑曲霉磁性生物吸附剂(Nano-Fe_3O_4 modified Aspergillus niger,NFAN) 。研究了初始pH值、吸附时间、吸附剂投加量以及铀初始浓度等对NFAN吸附铀酰离子的影响,分析了吸附铀过程的动力学及热力学规律。结果表明,NFAN在初始浓度为6 mg/L,pH =7,NFAN的用量为0.15 g/L,吸附4 h。在此条件下,NFAN的铀吸附量为60.05 mg/g,铀吸附率可达76.36%,吸附过程符合准二级动力学模型。
语种：
中文
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Construction of recombinant bioleaching bacteria Thiobacillus ferrooxidans with fluoride-resistant activity
作者：
Yun-Chang Cao;Hong-Bo Wen;Nan Hu;Yong-Dong Wang;Gaung-Yue Li;...
期刊：
American Journal of Biochemistry and Biotechnology ,2018年14(2):145-153 ISSN：1553-3468
通讯作者：
Ding, De-Xin(dingdxzzz@163.com)
作者机构：
[Yun-Chang Cao; Nan Hu; Yong-Dong Wang; Gaung-Yue Li; De-Xin Ding] Key Discipline Laboratory for National Defense for Biotechnology in Uranium Mining and Hydrometallurgy, University of South China, 28 West Changsheng Rd, Hengyang;Hunan;421001, China;[Hong-Bo Wen] Department of Biochemistry and Molecular Biology, School of Pharmaceutical and Biological Science, University of South China, 28 West Changsheng Rd, Hengyang;[Yun-Chang Cao; Hong-Bo Wen; Nan Hu; Yong-Dong Wang; Gaung-Yue Li; De-Xin Ding] Hunan
通讯机构：
[Ding, D.-X.] K;Key Discipline Laboratory for National Defense for Biotechnology in Uranium Mining and Hydrometallurgy, 28 West Changsheng Rd, China
关键词：
Bioleaching bacteria;Conjugation transfer;Flr-4 gene;Fluoride resistance;Genetic modification;Thiobacillus ferrooxidans
摘要：
Thiobacillus ferrooxidans is an important bioleaching bacterium, widely used in leaching, recovery of low-grade metals and environmental bioremediation. In bio-metallurgy industry, fluoride existing in some hard rock uranium deposits in south China severely affects the bacteria viability and inhibit leaching reproduction. In this study, the flr-4 gene that has strong resistance to fluorine ion in Caenorhabditis elegans, was cloned into pET30a vector and expressed in E. coli BL21. the ability of fluoride resistance in E. coli was increased obviously. To increase the fluorideresistance of bioleaching bacterium T. ferrooxidans strain 1 (T.f1), the flr-4 shuttle recombinant plasmid pJRD215-flr-4 was constructed and transferred into T.f1 by conjugation. pJRD215-flr-4 was stable in T.f1 with more than 70% retention after 50 generations. Recombinant T.f1 was tolerant to fluorine ions and grew well under fluoride (F-) stress especially at F- concentrations ranging from 10 mg/L to 60 mg/L. © 2018 Yun-Chang Cao, Hong-Bo Wen, 1Nan Hu, Yong-Dong Wang, Guang-Yue Li and De-Xin Ding.
语种：
英文
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A New Reforming Reaction Mechanism of Carbon Dioxide with Methane on Nano Scale Nickel catalyst
作者：
Long, Wei* ;Yan, Xue-Ming;Yang, Xing-Yue;Hu, Nian
期刊：
MATEC Web of Conferences ,2016年67:06102-null ISSN：2261-236X
通讯作者：
Long, Wei
作者机构：
[Yan, Xue-Ming; Hu, Nian; Long, Wei; Yang, Xing-Yue] Univ South China, Sch Chem & Chem Engn, Hengyang 421001, Hunan, Peoples R China.
通讯机构：
[Long, Wei] U;Univ South China, Sch Chem & Chem Engn, Hengyang 421001, Hunan, Peoples R China.
会议名称：
2016 International Symposium on Materials Application and Engineering (SMAE 2016)
会议时间：
2016-01-01
会议地点：
Chiang Mai, Thailand
会议主办单位：
[Long, Wei;Yan, Xue-Ming;Yang, Xing-Yue;Hu, Nian] Univ South China, Sch Chem & Chem Engn, Hengyang 421001, Hunan, Peoples R China.
会议论文集名称：
MATEC Web of Conferences
关键词：
Activation energy;Carbon;Carbon dioxide;Catalysts;Catalytic reforming;Density functional theory;Nickel;B3LYP density functional;Nano scale;Ni metal;Nickel catalyst;Rate determining step;Nanotechnology
摘要：
The reforming mechanism of CO2-CH4 on Nano scale Ni metal catalyst was investigated using the B3LYP density functional method and MP2/Lanl2dz method. It was found that the reaction include thirteen steps and the activation energy of each step was 44.7175, 200.4707, 171.0781, 307.2596, 124.5252, 330.7904, 593.9056, 177.5526, 226.6793, 277.789 2, 394.5525,399.5340 and 105.4115 kJ·mol-1. The rate determining step was the fourth step. The enthalpy value of each step was 31.6136, 106.7138, -104.2589, 79.9641, 93.5573,174.6 121, 259.6409, -141.9192, -439.9338, -265.4756, -208.3245, 131.6561 and -86.1765 kJ·mol-1. © The Authors, published by EDP Sciences, 2016.
语种：
英文
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功能化炭基磁性介孔材料的制备及其对铀的吸附性能
作者：
彭国文;肖方竹;孙世雄;张志军;胡南;...
期刊：
原子能科学技术 ,2015年49(12):2138-2144 ISSN：1000-6931
作者机构：
[彭国文; 王晓亮] School of Chemistry and Chemical Engineering, University of South China, Hengyang;421001, China;[肖方竹; 张志军; 胡南; 丁德馨] Key Discipline Laboratory for National Defence for Biotechnology in Uranium Mining and Hydrometallurgy, University of South China, Hengyang;[孙世雄] Qinghai Jinrui Mining Development Co., Ltd., Xining;810008, China
关键词：
炭基磁性介孔材料;功能化;铀;吸附性能;再生性能
摘要：
以介孔氧化硅SBA-15为模板,通过纳米浇筑法在模板孔道中引入不同质量的铁源和炭源作为前驱物,经过原位聚合反应,再使用[3-(三甲氧基硅烷)丙基]脲(UPTS)和氨丙基三乙氧基硅烷(APS)有机试剂对其表面进行后嫁接改性,得到介孔结构规整有序的功能化炭基磁性介孔材料(FCMMC)。并通过红外光谱(FT-IR)、N_2吸附-脱附分别表征了FCMMC的结构。考察了溶液pH值、铀初始浓度、吸附剂用量和吸附时间等因素对FCMMC吸附铀的影响。结果表明:炭基和铁基均被负载在介孔氧化硅基体上,FCMMC具有较高的比表面积和较窄的孔径分布。FCMMC吸附铀的最佳条件为:pH=6.0、铀初始浓度25mg/L、FCMMC用量40mg、吸附时间1.0h。对吸附动力学模型和吸附等温模型进行了分析,FCMMC对铀的吸附动力学过程符合准二级动力学模型,吸附等温线符合Langmuir等温线模型,最大理论吸附量为128.69mg/g。同时,使用3种不同的解吸剂对FCMMC解吸再生8次后,其对铀的吸附率均在80%以上,说明FCMMC具有良好的再生性能。
语种：
中文
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新型功能化吸附剂G-PA-SBA-15对U(VI)的吸附机理
作者：
彭国文;肖方竹;丁德馨;张志军;胡南;...
期刊：
中国有色金属学报 ,2015年25(11):3237-3244 ISSN：1004-0609
通讯作者：
Peng, Guo-Wen(pgwnh@sohu.com)
作者机构：
[王晓亮; 彭国文] School of Chemistry and Chemical Engineering, University of South China, Hengyang, China;[杨锦然; 黄红; 周归] Wang Chuanshan College, University of South China, Hengyang, China;[彭国文] School of Resources and Safety Engineering, Central South University, Changsha, China;[胡南; 肖方竹; 彭国文; 丁德馨; 张志军] Key Discipline Laboratory for National Defence for Biotechnology in Uranium Mining and Hydrometallurgy, University of South China, Hengyang, China
通讯机构：
School of Chemistry and Chemical Engineering, University of South China, Hengyang, China
关键词：
介孔氧化硅SBA-15;功能化改性;铀;吸附动力学;吸附等温线
摘要：
采用啤酒酵母菌为生物大孔模板,三嵌段聚合物(P123)为介孔相模板制备合成介孔氧化硅SBA-15。再采用Fe_3O_4为铁源,二乙基磷酰乙基三乙氧基硅烷(PTS)和氨丙基三乙氧基硅烷(APS)为有机改性基团,通过后嫁接法使有机改性基团对介孔氧化硅SBA-15进行功能化改性,得到新型功能化吸附剂G-PA-SBA-15,并通过扫描电镜、粉末X射线衍射和比表面分析仪分别表征吸附剂G-PA-SBA-15和SBA-15的结构。考察溶液pH值、吸附时间、铀初始浓度和温度等因素对吸附剂G-PA-SBA-15和SBA-15吸附铀的影响。结果表明:吸附剂G-PA-SBA-15直径均匀分布、孔径均一,吸附铀的最佳条件是pH值为6.0、吸附时间为1.0 h、铀初始浓度为20 mg/L和吸附反应温度为25 ℃。对吸附动力学模型和吸附等温模型进行分析,G-PA-SBA-15对铀的吸附动力学过程符合准二级动力学模型(相关系数R~2均大于0.99), 吸附等温线符合BET等温线模型,说明该吸附体系是一个多层吸附过程。
语种：
中文
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Adsorption properties and mechanism of saccharomyces cerevisiae loaded by nano-Fe3 O4 on uranium
作者：
彭国文;丁德馨;胡南;杨雨山;王晓亮
期刊：
中国有色金属学报 ,2012年22(2):604-610 ISSN：1004-0609
通讯作者：
Ding, D.-X.(dingdxzzz@163.com)
作者机构：
[杨雨山; 彭国文] School of Resources and Safety Engineering, Central South University, Changsha 410083, China;[杨雨山; 彭国文; 胡南; 丁德馨] Key Discipline Lab. for National Defence for Biotechnology in Uranium Mining and Hydrometallurgy, University of South China, Hengyang 421001, China;[王晓亮; 彭国文] School of Chemistry and Chemical Engineering, University of South China, Hengyang 421001, China
通讯机构：
Key Discipline Lab. for National Defence for Biotechnology in Uranium Mining and Hydrometallurgy, University of South China, China
关键词：
纳米Fe3O4啤酒酵母菌;负载;吸附性能;吸附机理;铀
摘要：
以纳米Fe_3O_4磁性微粒负载啤酒酵母菌,制备一种新型铀吸附剂,考察其吸附铀的主要影响因素,即溶液pH值、铀初始浓度、吸附剂投加量及其粒度,分析吸附过程的反应动力学和等温吸附规律,并用扫描电镜和能谱仪分析吸附机理。结果表明:纳米Fe_3O_4负载啤酒酵母菌(NFSC)吸附铀的最佳条件是pH值为7.0,铀初始浓度为60 mg/L,NFSC加入量为50 mg,NFSC的最佳粒径为12 nm。NFSC对铀的吸附动力学较好地符合准二级动力学模型,相关系数为0.999 6;吸附等温线均能符合Langmuir和Freundlich等温线模型,说明该吸附体系是一个单层覆盖与多层吸附相结合的模式。扫描电镜和能谱图表明:NFSC吸附铀后表面形态发生变化,且吸附过程中共存物理吸附和化学吸附,属于混合吸附类型。
语种：
中文
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化学修饰啤酒酵母菌对铀的吸附特性
作者：
彭国文;丁德馨;胡南;杨雨山;王晓亮
期刊：
化工学报 ,2011年62(11):3201-3206 ISSN：0438-1157
通讯作者：
Ding, D.(dingdxzzz@163.com)
作者机构：
School of Resources and Safety Engineering, Central South University, Changsha 410083, Hunan, China;[丁德馨; 胡南] Key Discipline Lab. for National Defence for Biotechnology in Uranium Mining and Hydrometallurgy, University of South China, Hengyang 421001, Hunan, China;[王晓亮] School of Chemistry and Chemical Engineering, University of South China, Hengyang 421001, Hunan, China;[彭国文] School of Resources and Safety Engineering, Central South University, Changsha 410083, Hunan, China<&wdkj&>Key Discipline Lab. for National Defence for Biotechnology in Uranium Mining and Hydrometallurgy, University of South China, Hengyang 421001, Hunan, China<&wdkj&>School of Chemistry and Chemical Engineering, University of South China, Hengyang 421001, Hunan, China;[杨雨山] School of Resources and Safety Engineering, Central South University, Changsha 410083, Hunan, China<&wdkj&>Key Discipline Lab. for National Defence for Biotechnology in Uranium Mining and Hydrometallurgy, University of South China, Hengyang 421001, Hunan, China
通讯机构：
Key Discipline Lab. for National Defence for Biotechnology in Uranium Mining and Hydrometallurgy, University of South China, China
关键词：
修饰啤酒酵母;化学修饰;铀;生物吸附;动力学模型
摘要：
以甲醛为交联剂,将胱氨酸修饰到啤酒酵母菌(SC)上,并采用海藻酸钠和明胶固定化,得到一种新型的生物吸附剂——修饰啤酒酵母菌( MSC).通过红外光谱(IR)分别表征了两种吸附剂的结构,考察了其吸附铀的主要影响因素即溶液pH值、吸附时间等.结果表明:MSC细胞表面具有大量吸附铀的基团,MSC和SC吸附铀的最佳条件是:pH值为6.0,吸附时间分别为1.8、1.5h.对吸附动力学模型和吸附等温模型进行了分析,MSC和SC对铀的吸附动力学模型较好地符合了准二级动力学模型,MSC和SC的相关系数均大于0.99;吸附等温线均能符合Langmuir和Freundlich等温线模型,说明该吸附体系是一个单层覆盖与多层吸附相结合的吸附模式,且MSC的最大吸附量是SC的6.5倍.
语种：
中文
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