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Synthesis of Fe_3O_4 nanoparticles by wet milling iron powder in a planetary ball mill

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China Particuology 2007年第5期5卷 357-358页

作者： ding Chen Song ni Zhenhua Chen Institute for Materials Research Hunan University Changsha 410082 China

Fe3O4 nanoparticles with sizes ranging from 30 to 80 nm were synthesized by wet milling iron powders in a planetary ball mill. The phase composition and the morphologies of the as-synthesized products were measured by X-ray diffraction （XRD）, scanning electron microscopy （SEM） and transmission electron microscopy （TEM）. Nanosized Fe3O4 particles were prepared by wet milling metallic iron powder （-200 mesh, 99%） in a planetary ball mill equipped with stainless steel vials using iron balls under distilled water with a ball-to-powder mass ratio of 50：1 and at a rotation speed of 300 rpm. The use of the iron balls in this method played a key role in Fe3O4 formation. The present technique is simple and the process is easy to carry out.

关键词： Fe3O4 Wet milling Planetary ball mill

Synthesis and Crystal Structure of [MoOS_3Cu_3I(dmpzm)_2]·2(MeCN)_(0.5) (dmpzm=Bis(3,5-dimethylpyrazolyl)methane)

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Chinese Journal of Structural Chemistry 2006年第5期25卷 557-561页

作者： ding ni-ni ZHANG Wen-Hua CHEN Jin-Xiang REN Zhi-Gang ZHANG Yong LANG Jian-Ping Key Laboratory of Organic Synthesis of Jiangsu Province School of Chemistry and Chemical Engineering Suzhou Universiry Suzhou 215006 China State Key Laboratory. of Structural Chemistry Fujian Institute of Research on the Structure of MatterThe Chinese Academy of Sciences Fuzhou Fujian 350002 China

Reaction of a preformed cluster [Et4N]4[Mo2O2S6Cu6I6] with bis（3,5-dimethylpyrazolyl）methane （dmpzm） in acetonitrile afforded the title compound [MoOS3Cu3I（dmpzm）2]·2（MeCN）0.5 1. The single-crystal X-ray diffraction study shows that 1 （C24H35Cu3IMoN9OS3, Mr = 975.25） crystallizes in triclinic, space group P1^- with a = 11.442（2）, b = 11.644（2）, c = 16.211（3） A, α = 99.26（3）, β= 102.22（3）, γ = 118.51（3）°, V = 1766.5（10） A^3, Z = 2, Dc = 1.834 g/cm^3, T = 193（2） K, F（000） = 960, μ = 32.12 cm^-1, λ = 0.71073A^3, R = 0.0355 and wR = 0.0915 for 5686 observed reflections with Ⅰ 〉 2σ（Ⅰ）. In the molecular structure of 1, the [MoOS3]^2- anion acts as a tridentate ligand to bind one CuI group and two [Cu（dmpzm）]^＋ units to form a nido-like [MoOS3Cu3] core with an approximate C2v symmetry. The Mo…Cu contacts are in the range of 2.6460（12）～2.6798（11）A.

关键词： molybdenum copper sulfur crystal structure cluster

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五边形石墨烯氧气吸附与解离特性研究

原子与分子物理学报 2025年第4期42卷 40-44页

作者：吴旌贺丁雅妮郭梦雨陈卫光史金磊河南财政金融学院创新创业学院郑州450046 郑州师范学院物理与电子工程学院郑州市低维纳米材料重点实验室郑州450044

基于密度泛函理论的第一性原理计算方法,研究了O_(2)在五边形石墨烯(PG)上的吸附与解离动力学行为.研究结果表明,PG并不能有效地激发O_(2),形成稳定的氧吸附结构需要克服约0.54 eV势垒,并且吸附的O_(2)分解需要克服约0.82 eV势垒.然而,O... 详细信息

基于密度泛函理论的第一性原理计算方法,研究了O_(2)在五边形石墨烯(PG)上的吸附与解离动力学行为.研究结果表明,PG并不能有效地激发O_(2),形成稳定的氧吸附结构需要克服约0.54 eV势垒,并且吸附的O_(2)分解需要克服约0.82 eV势垒.然而,O_(2)分解后的PG衬底结构却能使后续吸附的O_(2)分子自动分解,破坏C-C键,以致PG在空气中难以稳定存在.基于此,为了避免PG结构在空气中被氧化,我们进一步提出将过渡金属原子吸附PG,使得O_(2)更容易被过渡金属原子吸附与激发,从而避免了PG被氧化.

关键词：五边形石墨烯 O_(2)吸附与解离第一性原理计算

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Origin of Insignificant Strengthening Effect of CNTs in T6-Treated CNT/6061Al Composites

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Acta Metallurgica Sinica(English Letters) 2018年第2期31卷 134-142页

作者： Ke Zhao Zhen-Yu Liu Bo-Lyu Xiao ding-Rui ni Zong-Yi Ma Shenyang National Laboratory for Materials Science Institute of Metal Research Chinese Academy of Sciences Shenyang 110016 China University of Chinese Academy of Sciences Beijing 100040China Key Laboratory of New Processing Technology for Nonferrous Metal and Materials Ministry of Education Guilin University of Technology Guilin 541004 China

Carbon nanotube（CNT）-reinforced 6061 Al（CNT/6061 Al） composites were fabricated via powder metallurgy combined with friction stir processing（FSP）. CNTs were dispersed after FSP and accelerated the precipitation process of the CNT/6061 Al composites. However, the strengthening effect of CNTs on the T6-treated materials was insignificant,while the composites under the FSP and solution treatment conditions exhibited increased strength compared to the ***-free zones（PFZs） were detected around CNTs in the T6-treated CNT/6061 Al composites, and a model was proposed to describe the effect of PFZs on strength. The calculations indicated that the strength of PFZs was similar to that of the T6-treated 6061 Al. As a result, the strengthening effect of CNTs on the T6-treated CNT/6061 Al composites was insignificant.

关键词： Metal matrix composites Carbon nanotubes Precipitate-free zones

膜蒸馏技术用于垃圾渗滤液处理的研究进展与挑战

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现代化工 2025年第1期45卷 62-65,71页

作者：黎耀文李潜朱静张国伟丁丹妮李杰梅丹娅江苏大学环境与安全工程学院江苏镇江212013

综述了膜蒸馏(MD)技术在垃圾渗滤液反渗透浓水处理及渗滤液原液处理方面的应用研究进展,从无机、有机、生物污染3个方面系统分析了MD技术用于工业化垃圾渗滤液处理所面临的膜污染问题,并进一步从污水预处理、抗污染膜材料组件开发和膜... 详细信息

综述了膜蒸馏(MD)技术在垃圾渗滤液反渗透浓水处理及渗滤液原液处理方面的应用研究进展,从无机、有机、生物污染3个方面系统分析了MD技术用于工业化垃圾渗滤液处理所面临的膜污染问题,并进一步从污水预处理、抗污染膜材料组件开发和膜污垢清洗方面对MD技术用于垃圾渗滤液处理的膜污染控制进行了探讨与建议。

关键词：垃圾渗滤液原液反渗透浓水膜蒸馏技术废水处理膜污染

五边形石墨烯双层电子性能及磁性调控的第一性原理研究

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原子与分子物理学报 2025年第5期42卷 67-71页

作者：吴旌贺丁雅妮郭梦雨陈卫光王美娟史金磊河南财政金融学院创新创业学院郑州450046 郑州师范学院物理与电子工程学院郑州市低维纳米材料重点实验室郑州450044

基于密度泛函理论的第一性原理计算方法,我们研究了五边形石墨烯双层结构表面氢氟化对其电子结构及磁性的调控.计算结果表明,氢氟化的五边形石墨烯双层可以在价带顶和导带底出现自旋极化态,从而诱导出磁性且有效降低带隙.基于这一特性,... 详细信息

基于密度泛函理论的第一性原理计算方法,我们研究了五边形石墨烯双层结构表面氢氟化对其电子结构及磁性的调控.计算结果表明,氢氟化的五边形石墨烯双层可以在价带顶和导带底出现自旋极化态,从而诱导出磁性且有效降低带隙.基于这一特性,我们进一步发现通过调控氢氟化覆盖度能够有效调节体系带隙及磁矩,并且随着覆盖度增加实现了五边形石墨烯双层从半导体-金属-半导体的转变.

关键词：五边形石墨烯双层电子结构和磁性调控第一性原理计算

P-block基金属原子在TiO_(2)(110)表面的吸附及扩散性质研究

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原子与分子物理学报 2025年第6期42卷 17-21页

作者：丁雅妮郭梦雨王博涵贾晨怡王美娟史金磊郑州师范学院物理与电子工程学院郑州市低维纳米材料重点实验室郑州450044

基于密度泛函理论的第一性原理计算方法,我们系统研究了p-block金属原子(Sn,Sb,Bi和Te)在TiO_(2)(110)表面上的吸附及扩散行为.计算结果表明Sn,Sb及Bi金属原子在TiO_(2)(110)表面上具有较大的吸附能和较高的扩散势垒,倾向于形成分散的p-... 详细信息

基于密度泛函理论的第一性原理计算方法,我们系统研究了p-block金属原子(Sn,Sb,Bi和Te)在TiO_(2)(110)表面上的吸附及扩散行为.计算结果表明Sn,Sb及Bi金属原子在TiO_(2)(110)表面上具有较大的吸附能和较高的扩散势垒,倾向于形成分散的p-block单原子,然而对于Te金属原子,由于其与衬底结合能相对较弱且扩散势垒较低而更倾向于形成团簇,该研究结果有助于为实验上构建基于p-block的金属单原子催化剂提供理论依据.

关键词： p-block单原子催化剂吸附及扩散势垒第一性原理计算

The Role of Study Nurses in Clinical Trials of IBD Drugs

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Open Journal of Gastroenterology 2021年第7期11卷 113-117页

作者： ni ding Xiang Gao Department of Gastroenterology The Sixth Affiliated Hospital of Sun Yat-sen University Guangzhou China

Objective: To explore the establishment and roles of study nurses in IBD drug clinical trials. Methods: The management experience of this department’s study nurses in IBD drug clinical trials was retrospectively analyzed. Results: The study nurses played very important roles at all links during the preliminary preparation of IBD drug clinical trials, the whole-process management after project initiation, and the later work of project conclusion. Conclusions: As direct participants in drug clinical trials, study nurses play a very important role in ensuring standardization of the trial process, safeguarding patient’s rights and safety, and assisting investigators in carrying out study works smoothly.

关键词： Drug Clinical Trial Study Nurse Inflammatory Bowel Disease IBD Specialist Nurse

Management of Patients with Inflammatory Bowel Disease during the Prevention of COVID-19

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Open Journal of Nursing 2021年第3期11卷 164-169页

作者： ni ding Huiping Chen Qianqian Ji Department of Gastroenterology The Sixth Affiliated Hospital of Sun Yat-sen University Guangzhou China

Objective: To explore the disease management methods and effects for patients with inflammatory bowel disease (IBD) in the special period of pandemic. Methods: Medical staffs carried out the management of patients with IBD on the inflammatory disease service platform of this center from February to May of 2020 in addition to routine clinical works. Results: None of the nearly 3000 IBD patients who are being followed up at our center were infected with COVID-19. During this period, no patients experienced drug-related serious side effects or disease recurrence that could not be treated in time due to failure to reach the medical staffs. Conclusion: The disease management methods based on IBD platform allow the patients to be properly managed during this special period.

关键词： COVID-19 Inflammatory Bowel Disease Chronic Disease Management Nursing Care