Nuclear Analysis最新文献_第6页

Preparation of novel zirconium phosphonates for adsorption of lutetium 新型磷酸锆吸附镥的制备

Nuclear Analysis Pub Date : 2022-06-01 DOI: 10.1016/j.nucana.2022.100010

Wanjun Mu, Baihua Chen, Xingliang Li, Hongyuan Wei, Yuchuan Yang, Shuming Peng

{"title":"Preparation of novel zirconium phosphonates for adsorption of lutetium","authors":"Wanjun Mu, Baihua Chen, Xingliang Li, Hongyuan Wei, Yuchuan Yang, Shuming Peng","doi":"10.1016/j.nucana.2022.100010","DOIUrl":"10.1016/j.nucana.2022.100010","url":null,"abstract":"<div>Separation and recovery of 177Lu from radioactive medicine waste is concerned due to its potential application in radiopharmaceuticals. In this paper, two zirconium phosphonate materials (Zr-AMTP-1 and Zr-AMTP-2) were prepared by water-bath and hydrothermal method, respectively, for separating Lu from acidic systems. Both of them exhibited similar sheet-morphology and the typical layered structure like α-ZrP, but Zr-AMTP-2 possessed a wider layered distance due to the existence of [(CH3)2NH2]+ in its inter-layers. Remarkably, both two materials exhibited much stronger ability for removal of Lu3+ in comparison with α-ZrP, especially in complicated acidic conditions. Notably, Zr-AMTP-2 possess a much higher adsorption capacity for Lu3+ (113.91 mg g−1) [almost twice that of Zr-AMTP-1 (60.53 mg g−1)], and quick adsorption rates, which are attributed to its wider layer distance and abundant [(CH3)2NH2]+exchange sites. In addition, both two materials have a high selectivity for Lu3+ in the mixture solution with the co-existing ions (K+, Na+ and NO3−). This work posed a new way to develop new adsorbents that could be application in radioactive medicine waste disposal.</div>","PeriodicalId":100965,"journal":{"name":"Nuclear Analysis","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2773183922000106/pdfft?md5=be947893658b6cb55327da8523bef3fd&pid=1-s2.0-S2773183922000106-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81986353","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Review: Current progresses of small-angle neutron scattering on soft-matters investigation 综述:软物质小角中子散射研究进展

Nuclear Analysis Pub Date : 2022-06-01 DOI: 10.1016/j.nucana.2022.100011

Dong Liu , Kun Song , Wei Chen , Jie Chen , Guangai Sun , Liangbin Li

{"title":"Review: Current progresses of small-angle neutron scattering on soft-matters investigation","authors":"Dong Liu , Kun Song , Wei Chen , Jie Chen , Guangai Sun , Liangbin Li","doi":"10.1016/j.nucana.2022.100011","DOIUrl":"10.1016/j.nucana.2022.100011","url":null,"abstract":"<div>A review of the recent works on soft-matters based on small-angle neutron scattering (SANS) is presented. This Review is intended to be a relatively comprehensive source for applying SANS on soft-matters investigation, including the basic principles and theory, the major characteristics of the SANS such as chain labeling and contrast variation/matching based on hydrogen/deuterium replacement, as well as corresponding typical application examples. Through the demonstration of applications in sample systems such as polymer solutions, polymer blend, semi-crystalline polymer, polymer nano-composites, hydrogel, and bio-materials, the advantages of SANS on soft-matters are demonstrated. Specifically, examples of the recent SANS investigation on spectrometer SANS-Suanni of 20 MW China Mianyang Research Reactor (CMRR) were included. As the users of neutron facilities are increasing steeply along with newly established neutron sources as well as experienced ones, this Review is intended to be of interest to the SANS, soft matter, and nano-materials science communities.</div>","PeriodicalId":100965,"journal":{"name":"Nuclear Analysis","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2773183922000118/pdfft?md5=89cc140aff84605ee4d9d56509e79bf8&pid=1-s2.0-S2773183922000118-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81119412","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 11

Complexation of uranyl with chelidamic acid: Crystal structures, binding strength, and electrochemical redoxes 螯合酸与铀酰的络合:晶体结构、结合强度和电化学氧化

Nuclear Analysis Pub Date : 2022-06-01 DOI: 10.1016/j.nucana.2022.100014

Xingliang Li, Wanjun Mu, Baihua Chen, Yao He, Jun Tu, Yuchuan Yang, Yanqiu Yang, Hongyuan Wei, Shuming Peng

{"title":"Complexation of uranyl with chelidamic acid: Crystal structures, binding strength, and electrochemical redoxes","authors":"Xingliang Li, Wanjun Mu, Baihua Chen, Yao He, Jun Tu, Yuchuan Yang, Yanqiu Yang, Hongyuan Wei, Shuming Peng","doi":"10.1016/j.nucana.2022.100014","DOIUrl":"https://doi.org/10.1016/j.nucana.2022.100014","url":null,"abstract":"<div>Chelidamic acid (denoted as H3L in this paper) is a naturally occurring derivative of dipicolinic acid that functions as a versatile ligand. The complex formation of chelidamic acid with UO22+ has been investigated by potentiometry in a 0.1 M NaClO4 solution. The potentiometry identified 1:1 uranyl–chelidamate complexes (UO2HL, UO2L2−), 1:2 uranyl–chelidamate complex (UO2L24−), and a hydrolytic complex UO2(OH)2L2−. The possible UO2H2L22− structure was determine by crystal analysis. Chelidamate molecules coordinate to uranyl mainly through the pyridine–carboxylate chelation pocket (O, N, O), and 4-pyridinol–OH group is protonated. The presence of hydrolysate UO2(OH)2L2– was further confirmed by nuclear magnetic resonance spectroscopy (NMR). In an alkaline aqueous medium under anaerobic conditions, the complex UVIO2(OH)2L2−can be electrochemically reduced to pentavalent uranyl.</div>","PeriodicalId":100965,"journal":{"name":"Nuclear Analysis","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2773183922000143/pdfft?md5=9fbd00a5dc680969a085b352c57f7422&pid=1-s2.0-S2773183922000143-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"92064122","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Crystallization of polycaprolactone with low coverage of cyclodextrin 低环糊精覆盖率的聚己内酯结晶

Nuclear Analysis Pub Date : 2022-06-01 DOI: 10.1016/j.nucana.2022.100022

Nan Tian , Jing Chen , Jie Kong

引用次数: 0

VSAS: A smart small-angle scattering data processing tool 智能小角度散射数据处理工具

Nuclear Analysis Pub Date : 2022-06-01 DOI: 10.1016/j.nucana.2022.100012

Shuxin Shi , Shengyi Zhong , Lu Jin , Yifei Tang , Hao Lin

引用次数: 0

Transport and magnetic properties of CeAuGa3 single crystals CeAuGa3单晶的输运和磁性能

Nuclear Analysis Pub Date : 2022-03-01 DOI: 10.1016/j.nucana.2022.100002

Baijiang Lv, Benqiong Liu

{"title":"Transport and magnetic properties of CeAuGa3 single crystals","authors":"Baijiang Lv, Benqiong Liu","doi":"10.1016/j.nucana.2022.100002","DOIUrl":"10.1016/j.nucana.2022.100002","url":null,"abstract":"<div>Single crystals of CeAuGa3 which crystallize in a BaAl4-type structure are synthesized and their physical properties were investigated by magnetization, transport, and specific heat measurements. The BaAl4-type CeAuGa3 is a highly anisotropic ferromagnet with the transition temperature with <math><mrow><msub><mi>T</mi><mi>c</mi></msub><mo>=</mo><mn>1.8</mn><mspace></mspace><mspace></mspace><mtext>K</mtext></mrow></math>, which is confirmed by the hysteresis loop at low temperatures in magnetization measurements. Crystalline-electric field plays an important role in magnetic properties and the small Sommerfeld coefficient <math><mrow><mi>γ</mi><mo>=</mo><mn>12.6</mn><mspace></mspace><mspace></mspace><mtext>mJ</mtext><mo>/</mo><msup><mtext>mol K</mtext><mn>2</mn></msup></mrow></math> indicates that CeAuGa3 has a weak Kondo effect. These observations demonstrate that CeAuGa3 is an interesting example involving the possible interplay of ferromagnetic, crystalline-electric field and Kondo effect.</div>","PeriodicalId":100965,"journal":{"name":"Nuclear Analysis","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2773183922000027/pdfft?md5=868a1bce59e1e58b927e3716321581bb&pid=1-s2.0-S2773183922000027-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83827704","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Effect of oxygen on the radiation of silicone rubber determined by gaseous chromatograph and DFT calculation 气相色谱仪测定氧对硅橡胶辐射的影响及DFT计算

Nuclear Analysis Pub Date : 2022-03-01 DOI: 10.1016/j.nucana.2022.100005

Lei Yu , Shuai Liu , Bo Liu , Zhenghao Mao , Wei Huang , Jing Peng , Yinyong Ao

{"title":"Effect of oxygen on the radiation of silicone rubber determined by gaseous chromatograph and DFT calculation","authors":"Lei Yu , Shuai Liu , Bo Liu , Zhenghao Mao , Wei Huang , Jing Peng , Yinyong Ao","doi":"10.1016/j.nucana.2022.100005","DOIUrl":"10.1016/j.nucana.2022.100005","url":null,"abstract":"<div>The radiation effects of silicone rubber under different atmospheres are of great significance to evaluate the aging behavior of materials, and to assess their practical application life. The radiation-induced cross-linking and degradation of polydimethylsiloxane rubber were confirmed firstly by 1H NMR and high-temperature GPC, respectively. By using the established gas collecting system and gaseous chromatography method, we systematically investigated the gaseous products of irradiated silicone rubber at different oxygen concentrations. With the increase of oxygen concentration, the yield of CH4 decreases sharply, while the yield of hydrogen changes slightly. It can be further demonstrated that the reduction of CH4 concentration in the irradiated silicone rubber system is mainly due to the inhibition of CH4 formation, instead of the CH4 degradation, indicating that oxygen directly influences the conversion process of methyl radicals. Similarly, by monitoring the oxygen consumption, it is proved that oxygen is directly involved in the degradation process of silicone rubber, and oxygen scavenged the methyl radicals, which supressed the conversion process of methyl radicals to CH4. Finally, the radiation-induced crosslinking and degradation mechanism of raw silicone rubber was deduced by combining the gaseous products analysis and DFT calculation. It is demonstrated that the release of CH4 can be used to assess the radiation effect of silicone rubber. This work provides a novel method to understand deeply the radiation-induced crosslinking and degradation mechanism of silicone rubber under different atmospheres.</div>","PeriodicalId":100965,"journal":{"name":"Nuclear Analysis","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2773183922000052/pdfft?md5=69c12d575d12140cc8b484554c2d0fe7&pid=1-s2.0-S2773183922000052-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91123757","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Progress on nuclear analysis techniques 核分析技术的进展

Nuclear Analysis Pub Date : 2022-03-01 DOI: 10.1016/j.nucana.2022.100007

Shuming Peng, Taiping Peng, Guangai Sun

引用次数: 1

A general picture for water dissociation on uranium dioxide surfaces 水在二氧化铀表面解离的一般情况

Nuclear Analysis Pub Date : 2022-03-01 DOI: 10.1016/j.nucana.2022.100006

Wenting Lv , Cui Zhang , Zhongwei Zhao , Haitao Liu , Bo Sun , Yu Yang , Ping Zhang

{"title":"A general picture for water dissociation on uranium dioxide surfaces","authors":"Wenting Lv , Cui Zhang , Zhongwei Zhao , Haitao Liu , Bo Sun , Yu Yang , Ping Zhang","doi":"10.1016/j.nucana.2022.100006","DOIUrl":"10.1016/j.nucana.2022.100006","url":null,"abstract":"<div>Despite extensive theoretical and experimental studies, there is still no universal picture for water dissociation on actinide dioxide surfaces. Based on ab initio molecular dynamics studies, we systematically investigated the influences of surface morphology and stoichiometry of the UO2 (001) surface on the adsorption behavior of a water molecule. We find that the critical factor corresponding to water dissociation is the existence of surface actinide atoms. On the normal UO2 (001) surface, surface U atoms are ready to bond with dissociated hydroxyl groups and the adsorbed water molecules dissociate spontaneously upon approaching. Comparatively, the surface U atoms on the oxygen-over surface are fully bonded with oxygen atoms, and the approaching water molecule do not dissociate. On a more realistic trench UO2 surface, we find that approaching water molecules can steadily adsorb in the trench area after weakly bonding with two oxygen atoms in the trench. Our work reveals the vital role of surface actinide atoms in dissociating approaching water molecules, which is meaningful for macroscopic modellings of actinide corrosion.</div>","PeriodicalId":100965,"journal":{"name":"Nuclear Analysis","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2773183922000064/pdfft?md5=d5af094538c45d3cb7f12ca263830959&pid=1-s2.0-S2773183922000064-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76523688","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The effect of sink strength on helium bubble formation at elevated temperatures 沉降强度对高温下氦泡形成的影响

Nuclear Analysis Pub Date : 2022-03-01 DOI: 10.1016/j.nucana.2022.100003

Zhanfeng Yan , Yanru Lin

{"title":"The effect of sink strength on helium bubble formation at elevated temperatures","authors":"Zhanfeng Yan , Yanru Lin","doi":"10.1016/j.nucana.2022.100003","DOIUrl":"10.1016/j.nucana.2022.100003","url":null,"abstract":"<div>In present study, the model Fe–9Cr alloy and two nanostructured ferritic alloys (NFAs) CNA1 and 9YWTV with high application potential in advanced nuclear power systems were selected to systematically investigate the effect of sink strength on helium bubble behavior at elevated temperatures. Helium bubble formation for a constant implanted He concentration of ∼7500 atomic parts per million (appm) was characterized using transmission electron microscopy (TEM) at 500 and 700 °C. A quantitative research and comparison of the influence for a specific sink strength on bubble formation was illustrated. Results showed that the introduction of nanoparticles into NFAs can effectively reduce bubble coarsening by sequestering the implanted helium into dispersed small bubbles due to the sufficient He entrapment by interfaces between the nanoprecipitates and the surrounding matrix. In addition, the NFAs with higher sink strength (9YWTV) revealed a higher suppression effects on bubble growth compared to general particle-free Fe–9Cr alloy and CNA1 with lower sink strength. This can be attributed to the comparable mean free path of He diffusion with the inter-particle distance for high particle density in 9YWTV. Meanwhile, the suppression effects of sinks on bubble growth decreased with increasing temperature from 500 to 700 °C. The sink strength of the order of 1015 m−2 and 1016 m−2 showed favorable suppression effect on bubble coarsening at 500 °C and 700 °C, respectively.</div>","PeriodicalId":100965,"journal":{"name":"Nuclear Analysis","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2773183922000039/pdfft?md5=4d5c4ecc8d96bceadac9673fe400c17c&pid=1-s2.0-S2773183922000039-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82766887","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2