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Preparation and performance of photocatalytic regenerationable activated carbon prepared via sol-gel TiO_2

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Journal of Environmental Sciences 2006年第3期18卷 557-561页

作者： LIU shou-xin SUN Cheng-lin College of Material Science and Engineering Northeast Forestry University Harbin 150040 China Dalian Institute of Chemical Physics The Chinese Academy of Sciences Dalian 116023 China

Preparation of photocatalytic regenerationable activated carbon （AC） is the key step for the practical application of in situ regeneration of exhausted AC. A novel photocatalytic regenerationable AC was prepared by sol-gel TiO2 in this work. The adsorption and regeneration performance of TiO2/AC were evaluated using phenol as model compound. Scanning electron microscope （SEM） and nitrogen （77 K） adsorption isotherm were used to determine the surface area, pore structure and the distribution of TiO2. The results showed that with the increase of TiO2 loading, adsorption capacity of TiO2/AC decreased and the regeneration efficiency increased. The photocatalytic regenerationable AC with suitable TiO2 loading （2 wt%） exhibited suitable adsorption capacity and regeneration efficiency. TiO2 located mainly in the entrance of macro-pore of carbon. The prepared TiO2/AC exhibited similar surface structure and pore structure with material carbon.

关键词： photocatalytic regenerationable activated carbon titanium dioxide

Facile and large-scale synthesis of green-emitting carbon nanodots from aspartame and the applications for ferric ions sensing and cell imaging

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Science Bulletin 2017年第18期62卷 1256-1266页

作者： xin Zhang Yun Chen shou-Nian Ding School of Chemistry and Chemical Engineering Southeast University Department of Immunology Nanjing Medical University

A facile, economical and green strategy to prepare green-fluorescent nitrogen-doped carbon nanodots （N- CDs） with a quantum yield （QY） of approximately 31.91% has been built up, while aspartame was employed as the carbon-nitrogen source for the first time. The prepared N-CDs exhibited ultrahigh brightness, favorable strong photostability and negligible cytotoxicity. The outstanding optical properties are mainly derived from the their robost composition and steric distribution of the doped nitrogen atoms, which have been characterized detailedly. The obtained N-CDs showed highly selective and sensitive response toward ferric ions （Fe3＋） through a fluorescence static quenching process in a wide linear range of 0.005-60 μmol/L. The detection limit was as low as 1.43 nmol/L, allowing the analysis of Fe3＋ in a very simple method. The excitation-dependent luminescent behavior of the obtained N-CDs guaranteed the multicolor emissive property when they were used in cell imaging. And the application for intracellular Fe3＋ sensing further verified this novel N-CDs may open more opportunities in biosensor, bioimaging and biological assay.

关键词： Carbon nanodots Green-emitting Aspartame Ferric ions Cell imaging Real sample

不同浓度氧气对氧化铁促进的非生物腐殖化产物光谱特性的影响

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光谱学与光谱分析 2024年第6期44卷 1620-1626页

作者：张颖超毕志涛田雯鑫徐锐唐首锋石洪影张鸿琼燕山大学环境与化学工程学院环境工程系河北秦皇岛066004 云南省农村能源工程重点实验室云南昆明650500 河北省水体重金属深度修复与资源利用重点实验室河北秦皇岛066004 黑龙江博能绿色能源科技股份有限公司黑龙江哈尔滨150030 东北农业大学工程学院新能源科学与工程系黑龙江哈尔滨150030

腐殖化是有机残体经微生物转化或化学氧化聚合形成腐殖质的固碳过程,产物腐植酸(HA)所具有的活性基团对污染物的环境化学行为有重要影响。天然矿物如含Mn/Fe/Al/Si的氧化物可以促进有机单体小分子物质(如多酚、还原性糖、氨基酸等)氧化... 详细信息

腐殖化是有机残体经微生物转化或化学氧化聚合形成腐殖质的固碳过程,产物腐植酸(HA)所具有的活性基团对污染物的环境化学行为有重要影响。天然矿物如含Mn/Fe/Al/Si的氧化物可以促进有机单体小分子物质(如多酚、还原性糖、氨基酸等)氧化聚合成HA。作为天然氧化剂,氧气可与金属氧化物协同促进非生物腐殖化,并提高产物HA质量。不同氧气浓度对金属氧化物促进的非生物腐殖化及有机质基团演化的影响尚不清楚。该研究选择儿茶酚和甘氨酸作为腐殖化前体物,分别代表多酚和蛋白质类物质降解的小分子。采用氧化铁作为腐殖化强化剂。对反应过程中的溶液及提取的HA进行紫外可见光谱(UV-Vis)、傅里叶变换红外光谱(FTIR)和X射线光电子能谱(XPS)分析。结果表明,在不同氧气浓度气氛下,有机质芳构化程度(UV_(254))依次表现为:21%氧气浓度>40%氧气浓度>0%氧气浓度。HA产量变化趋势与UV 254结果一致,且在21%氧气浓度下,HA产量较40%与0%氧气浓度提升了25%。XPS光谱分析表明:21%氧气促进了HA中胺基N向吡咯N的转化,而40%氧气浓度则促进了胺基N向酰胺N的转化,0%氧气浓度下HA仍有胺基N。FTIR分析结果表明:·OH促进芳香类物质环裂形成了HA中的含氧官能团(C O,COOH)。FTIR与UV-Vis的异质二维谱图分析结果表明,氧气促进了氨基酸转化成HA的C O基团及酰胺转化成HA的芳基与脂肪族基团。结构方程模型(SEM)分析结果表明:铁离子溶出量是影响HA产率的关键因素,21%浓度的氧气通过促进铁离子的溶出加速了有机质的聚合。此外,Fe^(2+)/Fe^(3+)与HA产率呈负相关,说明氧气通过促进铁离子的转化间接影响了腐殖化反应。氧气浓度影响了腐殖化产物的转化,进而影响了HA的产量和官能团组成。研究揭示了氧气浓度对腐殖化产物的影响,为腐殖化理论的完善提供参考。

关键词：腐殖化氧化铁氧气浓度 X射线光电子能谱二维相关光谱

复健方联合泛髓组穴治疗急性缺血性脑卒中运动功能障碍患者的疗效观察

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时珍国医国药 2024年第1期35卷 132-136页

作者：刘婷婷宗寿健李鑫刘伟山东中医药大学山东济南250355 山东中医药大学第二附属医院山东济南250001 山东中医药大学附属医院山东济南250014

目的系统评价复健方联合泛髓组穴对急性缺血性脑卒中患者运动功能恢复的临床疗效。方法 90例急性期缺血性脑卒中后运动功能障碍患者随机分为对照组(n=30)、复健方组(n=30)和针药益髓法组(n=30)。对照组予以常规治疗,在对照组基础上,复... 详细信息

目的系统评价复健方联合泛髓组穴对急性缺血性脑卒中患者运动功能恢复的临床疗效。方法 90例急性期缺血性脑卒中后运动功能障碍患者随机分为对照组(n=30)、复健方组(n=30)和针药益髓法组(n=30)。对照组予以常规治疗,在对照组基础上,复健方组加用中药复健方汤剂,针药益髓法组在复健方组的基础上加刺泛髓组穴。比较3组患者FMA评分、NIHSS评分、Barthel指数、中医证候评分及神经营养因子(BDNF)水平。结果各组患者FMA评分、Barthel指数均较治疗前升高(P<0.01),FMA分值复健方组高于对照组(P<0.05),针药益髓法组高于复健方组(P<0.05)且明显高于对照组(P<0.01),Barthel指数针药益髓法组高于对照组(P<0.01),NIHSS评分、中医证候积分均较治疗前降低(P<0.01),NIHSS评分复健方组低于对照组(P<0.05),针药益髓法组低于复健方组(P<0.05)且明显低于对照组(P<0.01),中医证候积分针药益髓法组优于对照组(P<0.01),针药益髓法组总有效率为93.3%,高于对照组的76.7%(P<0.01)。血清BDNF值均较治疗前升高(P<0.05),针药益髓法组高于对照组(P<0.05)。结论针药结合益髓法可有效促进缺血性脑卒中偏瘫患者肢体运动功能恢复。

关键词：益髓法缺血性脑卒中运动功能障碍悬钟穴百会穴脑源性神经营养因子

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夺冠之路:有机光伏电池的奇妙赛程

高分子通报 2024年第7期37卷 993-1000页

作者：王灵心李中杰何田占玲玲尹守春杭州师范大学材料与化学化工学院哈尔科夫学院杭州311121

有机光伏电池——绿色能源的代言人。本文以舞台表演的形式,生动展示了“光伏大赛”过程,包括激子产生、扩散、分离、电荷传输和收集等关键环节;以展示不同活性层形貌和电子受体材料在提高光伏效率方面的作用,并颁发最佳活性层形貌奖、... 详细信息

有机光伏电池——绿色能源的代言人。本文以舞台表演的形式,生动展示了“光伏大赛”过程,包括激子产生、扩散、分离、电荷传输和收集等关键环节;以展示不同活性层形貌和电子受体材料在提高光伏效率方面的作用,并颁发最佳活性层形貌奖、最佳电子受体材料奖和最佳策略奖,为读者提供有关有机光伏电池的重要信息和进展。

关键词：有机光伏电池电子受体材料活性层形貌多元策略

Porous hydrogel arrays for hepatoma cell spheroid formation and drug resistance investigation

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Bio-Design and Manufacturing 2021年第4期4卷 842-850页

作者： xin Lei Changmin Shao xin shou Keqing Shi Liang Shi Yuanjin Zhao Translational Medicine Laboratory The First Affiliated Hospital of Wenzhou Medical UniversityWenzhou 325035China Wenzhou Institute University of Chinese Academy of SciencesWenzhou 325001China State Key Laboratory of Bioelectronics School of Biological Science and Medical EngineeringSoutheast UniversityNanjing 210096China Department of Laboratory Medicine The Eighth Affiliated HospitalSun Yat-Sen UniversityShenzhen 518033China

Drug resistance is one of the major obstacles in the drug therapy of *** in this area in pre-clinical research have focused on developing novel platforms to evaluate and decrease drug *** this paper,inspired by the structure of hives where swarms live and breed,we propose porous hydrogel arrays with a uniform pore structure for the generation of hepatoma cell spheroids and the investigation of drug *** porous hydrogel arrays were fabricated using polyeth-ylene glycol diacrylate(PEGDA)hydrogel to negatively replicate a well-designed *** from the elaborate processing of the template,the prepared porous hydrogel arrays possessed a uniform pore *** to their anti-adhesion properties and the excellent biocompatibility of the PEGDA hydrogel,the hepatoma cells could form well-defined and uni-form hepatoma cell spheroids in the porous hydrogel *** found that the resistant hepatoma cell spheroids showed more significant Lenvatinib resistance and a migratory phenotype compared with a two-dimensional(2D)cell culture,which reveals the reason for the failure of most 2D cell-selected drugs for in vivo *** features give such porous hydrogel arrays promising application prospects in the investigation of tumor cell spheroid culture and in vitro drug resistance.

关键词： Drug resistance Hydrogel Porous Spheroid Hepatoma

Iodopentafluorosulfanylation of [1.1.1]propellane and further functionalizations

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Science China Chemistry 2023年第10期66卷 2871-2877页

作者： xin Zhao Jia-Yi shou Feng-Ling Qing Key Laboratory of Organofluorine Chemistry Shanghai Institute of Organic ChemistryUniversity of Chinese Academy of SciencesChinese Academy of SciencesShanghai 200032China

Pentafluorosulfanylated(SF_(5^(-))) aromatics have shown great potential in drugs, and the bioisosteric replacement of aromatic ring with bicyclo[1.1.1]pentane(BCP) unit has attracted considerable attention recently. Consequently, pentafluorosulfanylated bicyclo[1.1.1]pentanes(SF_(5^(-))BCPs) should have application in the realm of drug discovery. In this study, a one-pot iodopentafluorosulfanylation of [1.1.1]propellane with SF_(5)Cl and CH_(2)I_(2)for the practical synthesis of iodopentafluorosulfanylated bicyclo[1.1.1]pentane(SF_(5^(-))BCP-I) was developed. SF_(5^(-))BCP-I was the first example of SF_(5^(-))BCPs that could be transformed. The first general method to access SF_(5^(-))substituted bicyclo[1.1.1]pentane derivatives was demonstrated through photoredox-catalyzed radical addition of SF_(5^(-))BCP-I to alkenes and alkynes.

关键词： pentafluorosulfanyl bicyclo[1.1.1]pentane(BCP) bioisosteres photoredox radical

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花生含油量的遗传基础与QTL定位研究进展

作物学报 2024年第3期50卷 529-542页

作者：张月王志慧淮东欣刘念姜慧芳廖伯寿雷永中国农业科学院油料作物研究所/农业农村部油料作物生物学与遗传育种重点实验室湖北武汉430062

花生是我国重要的油料作物,含油量是花生重要的品质性状和育种目标。花生含油量每提高1个百分点,相当于增产2个百分点,油脂加工利润可提高7个百分点。培育高油高产花生品种是增加食用油供给和保障食用油供给安全的重要途径。本文概述了... 详细信息

花生是我国重要的油料作物,含油量是花生重要的品质性状和育种目标。花生含油量每提高1个百分点,相当于增产2个百分点,油脂加工利润可提高7个百分点。培育高油高产花生品种是增加食用油供给和保障食用油供给安全的重要途径。本文概述了花生含油量表型鉴定的4种常用方法;阐述了花生含油量的遗传特性是多基因控制的数量性状,即受加性效应和显性效应的影响,也存在基因型和环境互作;总结了已报道的含油量QTL124个,表型变异解释率超过10%的主效位点有36个,分布在A03、A05和A08上的8个主效QTL可重复检测到;构建了一张花生含油量的一致性遗传图谱,A08染色体上33.59~50.24 Mb为热点区间;介绍了油脂合成及调控相关基因等方面的研究进展,以期为花生含油量遗传改良和高油品种培育提供理论指导。

关键词：花生含油量遗传特性 QTL定位基因

Simulation and detection of the topological properties of a modulated Rice-Mele model in a one-dimensional circuit-QED lattice

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Science China(Physics,Mechanics & Astronomy) 2018年第8期61卷 17-26页

作者： Lu Qi Yan xing Ji Cao xin-xin Jiang Cheng-shou An Ai-Dong Zhu shou Zhang Hong-Fu Wang Department of Physics College of Science Yanbian University Department of Electronic Information Engineering College of Engineering Yanbian University

Here, we propose a simple scheme to realize a one-dimensional （1D） modulated Rice-Mele model （RMM） and investigate its topological properties with a 1D circuit quantum electrodynamics （QED） lattice. The system can be mapped into a Chern insulator model by introducing a period parameter. Interestingly and surprisingly, we found that the circuit-QED lattice system always exhibits topologically nonttrvial phases if both the nearest-neighbor hopping strength between two resonators and the qubitassisted on-site potentials are alternately changed in the direction of the lattice. The numerical results show that the topological phases can be obtained by introducing an additional modulation parameter and both the edge state and topological invariant can be unambiguously seen with the existence of decay and disorders, even with few resonators in the lattice.

关键词： topological phase topological invariant Rice-Mele model circuit QED