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双碳背景下零碳实验室建设的探索与实践

山西建筑 2024年第4期50卷 17-20页

作者：杜欢欢崔雪洁温州理工学院浙江温州325035 温州理工学院绿色建筑与节能研究所浙江温州325035

全球化背景下,我国已做出碳达峰、碳中和的庄严承诺。作为人才培养的主阵地,高校更要积极地参与到“双碳”行动中。在双碳背景下,结合校园基建工作,开展零碳实验室建设工作,为各项实验活动的高效安全开展提供有效保障。因此,通过对双碳... 详细信息

全球化背景下,我国已做出碳达峰、碳中和的庄严承诺。作为人才培养的主阵地,高校更要积极地参与到“双碳”行动中。在双碳背景下,结合校园基建工作,开展零碳实验室建设工作,为各项实验活动的高效安全开展提供有效保障。因此,通过对双碳背景下实验室建设的必要性及可行性进行了分析,并提出了零碳实验室的整体改造方案,在学院零碳实验室运行与实践应用过程中让绿色环保理念融入建筑与能源工程学院每位师生心中,对提升实验室管理水平、保护生态环境具有重要意义。

关键词：双碳零碳实验室实验室建设

Influences of ultrasonic irradiation on the morphology and structure of nanoporous Co nanoparticles during chemical dealloying

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Progress in Natural Science:Materials International 2016年第6期26卷 562-566页

作者： Hui Li Mu Zhu Yu Pang huanhuan du Tong Liu Key Laboratory of Aerospace Materials and Performance(Ministry of Education) School of Materials Science and EngineeringBeihang University

The Co-61.8 wt% Al nanoparticles of 45 nm were prepared by hydrogen plasma-metal reaction（HPMR）method. The nanoparticles display core shell structure with Al13Co4and CoAl core and aluminum oxide shell（about 2 nm）. Under ultrasonic irradiation, nanoporous fcc-Co nanoparticles were produced successfully by chemically dealloying the Co-Al nanoparticles at room temperature, whereas, without ultrasonic irradiation CoAl phase could hardly react with sodium hydroxide solution. At 323 K the Co-Al nanoparticles could be dealloyed to fcc-Co and hcp-Co phases even without ultrasonic irradiation. The surface area of the dealloyed nanoparticles under ultrasonic irradiation was larger than that of the dealloyed sample without ultrasonic irradiation at the same temperature. It is believed that the microjet and shock-wave induced by ultrasonic irradiation give rise to particles size reduction, interparticle collision and surface cleaning, and accelerate the dealloying process and the phase transformation.

关键词： Nanoporous nanoparticles Co Ultrasonic irradiation Chemical dealloying Microstructure

Samarium doped apatite-type orange-red emitting phosphor Ca5（PO4）2SiO4 with satisfactory thermal properties for n-UV w-LEDs

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Journal of Rare Earths 2019年第9期37卷 949-954,I0002页

作者： Ze Zhang Jialiang Niu Wei Zhou Dingdian Xu huanhuan du Department of Chemistry School of ScienceBeijing Technology and Business University

A novel single-phase Sm^3+activated Ca5(PO4)2SiO4 phosphor was successfully fabricated via a conventional solid-state method,which can be e fficie ntly excited by near ultraviolet(n-UV)light-emitting *** crystal structure and luminescence properties were characterized and analyzed systematically by using relevant *** Ca5(PO4)2SiO4:Sm^3+phosphor shows an orange-red emission peaking at600 nm under the excitation of 403 nm and the optimal doping concentration of Sm^3+is determined to be 0.08,The critical distance of Ca5(PO4)2SiO4:0.08 Sm^3+is calculated to be 1.849 nm and concentration quenching mechanism of the Sm^3+in Ca5(PO4)2SiO4 host is ascribed to energy transfer between nearestneighbor *** decay time of Ca5(PO4)2 SiO4:0,08 Sm^3+is determined to be 1.1957 *** addition,the effect of temperature on the emission intensity was also studied,72.4%of the initial intensity is still preserved at 250℃,better thermal stability compared to commercial phosphor YAG:Ce^3+indicates that Ca5(PO4)2SiO4:0.08 Sm^3+has excellent thermal stability and active energy is deduced to be 0.130 *** the results demonstrate that orange-red emitting Ca5(PO4)2SiO4:0.08 Sm3+phosphor exhibits good luminescent *** to the excellent thermal quenching luminescence property,Ca5(PO4)2SiO4:0.08 Sm^3+phosphor can be applied in n-UV white light emitting diodes and serve as the warm part of white light.

关键词： Phosphors Ca5(PO4)2SiO4:Sm^3+ Luminescence Orange-red phosphor Rare earths

Surface-effect on detection ability of fluorescent Eu(btc)metal-organic frameworks to metal ions

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Journal of Rare Earths 2021年第4期39卷 446-452页

作者： Jiaolong Peng Wei Zhou Heping Ding huanhuan du Shujing J.Li Beijing Advanced Innovation Center for Food Nutrition and Human Health Beijing Technology and Business UniversityBeijing 100048China Department of Chemistry College of Chemistry and Materials EngineeringBeijing Technology and Business UniversityBeijing 100048China

Eu(btc)metal organic frameworks(MOFs)were prepared by co-precipitation method via 1,2,4-benzenetricarboxylic acids(H3btc)connecting with Eu^(3+)ions,and the morphology was controlled from compact spherical to irregular honeycomb by adjusting the pH of reaction *** luminescence properties of Eu(btc)MOFs are found to be related to the surface morphology of products,and the compact spherical one performs stronger emission *** sensing ability of Eu(btc)MOFs to 11 kinds of metal ions was investigated and a prominent quenching effect occurrs in Fe^(3+),or Ni^(2+)*** on UV—vis absorption analysis,an“ion-fence”model presents the competition to absorb exciting light between Eu(btc)MOFs and adsorbed metal *** on Stern-Volmer equation,the Eu(btc)detection is found with higher Ksv value and a lower detection ***,a higher sensing efficiency is confirmed in the Eu(btc)MOFs with loose honeycomb due to aggravating porous surface offering much more sites for metal ions.

关键词： MOF Surface-effect Detection Metal ions Rare earths

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基于多目标的新时期河湖治理规划研究

水利水电工程设计 2024年第3期43卷 1-5页

作者：钟伟强杜欢欢胡佳纯李梓渊广东省水利水电科学研究院广州510635

随着经济的发展和城市化的加速,广东云浮市南山河在水生态空间挤占、水环境质量稳固、生物多样性退化等方面问题较突出,与人民向往的美好河湖生态环境存在较大的差距,因此,探索新时期河湖治理的思路和模式,成为当前迫切需要解决的问题... 详细信息

随着经济的发展和城市化的加速,广东云浮市南山河在水生态空间挤占、水环境质量稳固、生物多样性退化等方面问题较突出,与人民向往的美好河湖生态环境存在较大的差距,因此,探索新时期河湖治理的思路和模式,成为当前迫切需要解决的问题。南山河碧道谋划了新时期河湖综合治理的思路、模式和总体格局,研究构建了分区布局及措施体系,为新时代河湖治理和打造“广式幸福河湖”提供相应的借鉴。

关键词：新时期河湖治理碧道规划

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枸橼酸坦度螺酮口腔速溶膜的制备与质量评价

中国医药工业杂志 2024年第3期55卷 385-391页

作者：刘圆圆杜欢欢尹民施斌贺敦伟中国海洋大学医药学院山东青岛266003 则正(上海)生物科技有限公司上海201807

采用溶剂浇铸法制备枸橼酸坦度螺酮口腔速溶膜(ODFs)。通过单因素试验筛选了成膜材料、掩味剂和增塑剂,确定优化处方为:10.8%的枸橼酸坦度螺酮、37.5%的HPMCE5、7.5%的羟丙纤维素、27.0%的羟丙基倍他环糊精、15%的甘油和2.2%的三氯蔗糖... 详细信息

采用溶剂浇铸法制备枸橼酸坦度螺酮口腔速溶膜(ODFs)。通过单因素试验筛选了成膜材料、掩味剂和增塑剂,确定优化处方为:10.8%的枸橼酸坦度螺酮、37.5%的HPMCE5、7.5%的羟丙纤维素、27.0%的羟丙基倍他环糊精、15%的甘油和2.2%的三氯蔗糖。所得ODFs成膜性好,崩解时间约40 s,含量均匀度和有关物质符合规定,15 min时水中的溶出率超过85%,与市售片剂的溶出行为相似。基于羟丙基倍他环糊精的包合作用,药物的掩味效果较好。在光照、高温和高湿条件下进行ODFs的稳定性试验。结果显示,除60℃高温条件外,ODFs在其他条件下稳定性良好,外观、含量和有关物质未发生显著变化。在40℃、相对湿度75%条件下放置1个月,ODFs中的药物晶型保持稳定。

关键词：枸橼酸坦度螺酮口腔速溶膜掩味溶剂浇铸法体外溶出稳定性

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复方布洛肾素那敏片的开发及体外溶出评估

生物化工 2024年第1期10卷 18-23页

作者：郭铠溶杜欢欢尹民施斌贺敦伟中国海洋大学医药学院山东青岛266003 上海则正医药科技股份有限公司上海201807

目的:制备复方布洛肾素那敏片,优化处方组成与制备工艺,评价自制制剂和参比制剂溶出曲线的相似性。方法:将布洛芬与马来酸氯苯那敏组合进行湿法制粒,盐酸去氧肾上腺素单独进行湿法制粒,考察崩解剂交联羧甲基纤维素钠、粘合剂羟丙甲纤维... 详细信息

目的:制备复方布洛肾素那敏片,优化处方组成与制备工艺,评价自制制剂和参比制剂溶出曲线的相似性。方法:将布洛芬与马来酸氯苯那敏组合进行湿法制粒,盐酸去氧肾上腺素单独进行湿法制粒,考察崩解剂交联羧甲基纤维素钠、粘合剂羟丙甲纤维素、润滑剂硬脂酸镁用量,以及布洛芬原料粒径等影响因素对溶出的影响,确定最终处方组成。结果:经过处方筛选,在片剂总重480 mg条件下,确定布洛芬原料粒径范围为170μm≤D90≤190μm,崩解剂交联羧甲基纤维素钠用量为25.2 mg,粘合剂羟丙甲纤维素用量为4.2 mg,润滑剂硬脂酸镁用量为4.2 mg,自制制剂与参比制剂在4种溶出介质中溶出曲线的相似因子(f2)值高于50。结论:成功制备复方布洛肾素那敏片,制剂处方简单,工艺稳定,重现性好,溶出曲线与参比制剂相似,为后期生产布洛肾素那敏片剂提供理论依据。

关键词：布洛肾素那敏片制备工艺体外溶出一致性

Effect of cerium alloying on microstructure,texture and mechanical properties of magnesium during cold-rolling process

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Journal of Rare Earths 2024年第5期42卷 1001-1008,I0007页

作者： Zhen Zhang huanhuan Chen Shiju Cao Jinhua Peng Peng Guo Chang Long Shan Wang Chang Chen Yong Wu Ji'an Huang Xiaodong du Haigen Wei School of Materials Science and Engineering Hefei University of TechnologyHefei230009China NationalLocal Joint Research Center of Non-ferrous Metal Materials and Processing Technology Hefei230009China Laboratory of Nonferrous Metal Material and Processing Engineering of Anhui Province Hefei230009China School of Materials Science and Engineering Jiangsu University of Science and TechnologyZhenjiang212003China Institute of Industry and Equipment Technology Hefei University of TechnologyHefei230009China Faculty of Materials Metallurgy and Chemistry Jiangxi University of Science and TechnologyGanzhou341000China

Hot-extrusion and cold-rolling were conducted on Mg-Ce binary alloys to explore the effect of cerium(Ce)on microstructure,texture and mechanical properties of Mg *** addition of Ce results in significant grain refinement both in as-cast and hot-extruded *** basal texture is also weakened after extrusion and an inclined basal texture is formed with Ce *** strength and elongation of the Mg-Ce alloys are improved simultaneously due to such grain refinement and texture weakening *** cold-rolling,plenty of twins are found in the pure Mg and AZ31 plates while grains in the Mg-0.3Ce plate deform more uniformly without lamellar twin ***,Mg-0.3Ce alloys own strong and continuous strain hardening because Ce atoms and Mg-Ce precipitated phases serve as obstacles for dislocation slip.

关键词： Mg-Ce alloys Hot extrusion Cold-rolling Rare earths

Identification of the optimal doping position of hetero-atoms in chalcogen-doped Fe-N-C catalysts for oxygen reduction reaction

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Particuology 2024年第6期89卷 99-108页

作者： Weihao Liu huanhuan He Qingtao Liu Xin Wan Jianglan Shui School of Materials Science and Engineering Beihang UniversityBeijing100191China School of Space and Environment Beihang UniversityBeijing102206China Tianmushan Laboratory Hangzhou310023China

The excellent oxygen reduction reaction(ORR)activity of Fe–N–C catalysts in acidic media makes them potential for low-cost proton exchange membrane fuel *** recent years,it has been shown that heteroatoms(B,O,S,P,Cl,F,etc.)can be used as electron-withdrawing groups to modulate the planar structure and electron distribution of the Fe–Nx active sites to achieve simultaneous improvement of catalytic activity and ***,the optimal location of the heteroatoms remains ***,taking chalcogen heteroatoms(S and Se)as an example,we control the doping positions and investigate their effect on the ORR performance of the Fe–N–C *** first coordination shell of the iron single atom is identified as the optimal doping *** optimized catalysts Fe–N_(3)Se_(1)/NC and Fe–N_(3)Se_(1)/NC demonstrate improved activity and stability in both half cells and fuel *** work provides insights into the enhancement mechanism of heteroatom doping in single-atom catalysts.

关键词： Oxygen reduction reaction Fe-N-C catalysts Hetero-atom doping Doping position Enhancement mechanism