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Graphene oxide as a water transporter promoting germination of plants in soil

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Nano Research 2018年第4期11卷 1928-1937页

作者： Yijia He ruirui hu Yujia Zhong Xuanliang Zhao Qiao Chen Hongwei Zhu State Key Laboratory of New Ceramics and Fine Processing School of Materials Science and Engineering and Center for Nano andMicro Mechanics Tsinghua University Beijing 100084 China

Graphene oxide （GO） is a graphene derivative bearing various oxygen-containing functional groups attached to the basal plane and to the edges of the graphene lattice and hence has a unique structure in which numerous hydrophobic sp2 clusters are isolated within the hydrophilic sp3 C-O matrix. In this study, the hydrophilic nature and water-transporting properties of GO were exploited to promote germination and growth of plants. It was found that a low dose of GO significantly promoted the germination of spinach and chive in soil. The oxygen-containing functional groups of GO collected water, and the hydrophobic sp2 domains transported water to the seeds to accelerate the germination of plants. The strong interaction between GO and the surfaces of soil grains stabilized GO in the soil and prevented dissipation of GO. In addition, no GO was detected either on the surface or inside the cells of plants; this finding confirmed that GO was not phytotoxic. Therefore, GO may serve as a promising nontoxic additive to increase a plant yield.

关键词： graphene oxide plant growth germination water transporter

Graphene oxide as an antimicrobial agent can extenCthe vase life of cut flowers

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Nano Research 2018年第11期11卷 6010-6022页

作者： Yijia He Lichao Qian Xu Liu ruirui hu Meirong huang Yule Liu Guoqiang Chen Dusan Losic Hongwei Zhu State Key Laboratory of New Ceramics and Fine Processing School of Materials Science and Engineering Tsinghua University Beijing 100084 China Center for Nano and Micro Mechanics Tsinghua University Beijing 100084 China Center for Plant Biology and MOE Key Laboratory of Bioinformatics School of Life Sciences Tsinghua University Beijing 100084 China Department of Biology School of Life Sciences Tsinghua University Beijing 100084 China School of Chemical Engineering Engineering North Building The University of Adelaide Adelaide SA 5005 Australia

PlantNanOmics is an emerging topic in agricultural research that explores the potential effect of application of nanomaterials on plant growth. Graphene oxide (GO) has excellent properties due to its basal carbon plane and oxygen-containing functional groups. In the present work, the antimicrobial activity of GO was exploited to extend the vase life and improve the quality of cut roses (cv. Carola). The results revealed that the cut roses cultivated in low doses of GO (0.1 mg/L) had longer vase life, larger diameter, and better water relations. Microbial contaminations at the basal stem end is the most common reason for stem blockage that causes water stress and early wilting of cut flowers. GO was found to act as a germicide, effectively inhibiting the microbial growth at the cut stem end and improving water uptake and water balance of cut roses. Therefore, GO can serve as a promising preservative to increase the ornamental value of cut flowers.

关键词： graphene oxide cut flower antimicrobial water transport vase life

Nest-like multilevel structured graphene oxide-on-polyacrylonitrile membranes for highly efficient filtration of ultrafine particles

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Journal of Materiomics 2019年第3期5卷 422-427页

作者： Jing Li Danzhen Zhang Xin Jiang Xuanliang Zhao ruirui hu Yujia Zhong Hongwei Zhu State Key Lab of New Ceramics and Fine Processing School of Materials Science and EngineeringTsinghua UniversityBeijing100084China

Developing filtration media for particulate matter(PM)removal has been proven to be extremely ***,we report a facile and scalable strategy to fabricate a multi-level structured polyacrylonitrile/graphene oxide(PAN/GO)air filtration membrane to remove ultrafine particles in air by combining multi-jet electrospinning and physical *** approach allows the thin PAN nanofibers and two-dimensional GO nanosheets to form interpenetrating bonding structures on non-woven fabric and to assemble into stable filtration *** resultant composite membranes can filtrate 300 nm particles with a high removal efficiency of 98.8%,a low pressure drop of 55 Pa,and a desirable quality factor of 0.34 Pa^(-1).This multi-level PAN/GO filter is expected to have wider applications not only for the ultrafine particle filtration and separation but also for the design of three-dimensional functional structures in the future.

关键词： Graphene oxide Polyacrylonitrile Electrospinning Ultrafine particles

Graphene oxide quantum dots embedded polysulfone membranes with enhanced hydrophilicity,permeability and antifouling performance

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Science China Materials 2019年第8期62卷 1177-1187页

作者： Guoke Zhao ruirui hu Jing Li Hongwei Zhu State Key Lab of New Ceramics and Fine Processing School of Materials Science and Engineering Tsinghua University

Graphene oxide(GO) has been demonstrated to be an effective hydrophilic nanofiller to modify the polymeric membranes when forming a mixed matrix structure. GO quantum dots(QDs) are promising candidates to fully exert the rich oxygen containing functional groups due to their unique size induced edge effects. In this work, GO QDs modified polysulfone(PSF) ultrafiltration(UF) membranes were prepared by phase inversion method with various GO QDs loadings(0.1–0.5 wt.%). A proper amount of GO QDs addition led to a more porous and hydrophilic membrane structure. With 0.3 wt.% GO QDs, the membranes showed a60% increase in permeability(130.54 vs. 82.52 LMH bar^-1).The pristine PSF membranes had a complete cutoff of bovine serum albumin molecules and it was well maintained with GO QDs incorporated. The membranes with 0.5 wt.% GO QDs exhibited the highest flux recovery ratio of 89.7% and the lowest irreversible fouling of 10.3%(54.5% and 33.3% for the pristine PSF membranes). Our results proved that GO QDs can function as effective nanofillers to enhance the hydrophilicity, permeability and antifouling performance of PSF UF membranes.

关键词： graphene oxide quantum dots ultrafiltration membrane antifbuling

BaTiO_3/石墨烯复合材料的合成及其光催化性能

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安徽大学学报（自然科学版） 2018年第5期42卷 62-66页

作者：吴明在胡蕊蕊安徽大学物理与材料科学学院安徽省信息材料与器件重点实验室安徽合肥230601

采用一步水热法制备BaTiO_3/石墨烯复合光催化材料.使用X射线衍射仪(XRD)、激光拉曼光谱仪、冷场发射式扫描电镜(SEM)、透射电子显微镜(TEM)、紫外可见分光光度计(UV-Vis)等对样品进行表征.以亚甲基蓝(MB)为目标降解物,分别以BaTiO_3,Ba... 详细信息

采用一步水热法制备BaTiO_3/石墨烯复合光催化材料.使用X射线衍射仪(XRD)、激光拉曼光谱仪、冷场发射式扫描电镜(SEM)、透射电子显微镜(TEM)、紫外可见分光光度计(UV-Vis)等对样品进行表征.以亚甲基蓝(MB)为目标降解物,分别以BaTiO_3,BaTiO_3/石墨烯复合材料为光催化剂,研究可见光辐射下其光催化性能.结果表明,BaTiO_3/石墨烯复合材料对MB的降解率明显优于BaTiO_3,经过180 min光照后,降解效率可达93.2%.

关键词： BaTiO3 石墨烯亚甲基蓝光催化降解

Java Web程序运用中泛型DAO的作用

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电子测试 2017年第2X期28卷 46-46,49页

作者：胡蕊蕊西京学院陕西西安710123

将泛型DAO模式加入到Java Web程序中,能够使Java Web程序具有更好的维护性、扩展性和复用性,能够改善传统Java Web程序中的缺点,运算性能得到大幅度的提高,同时还增强了程序的安全性。

关键词： Spring框架 DAO模式 Java Web程序

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Nisin对泡椒猪皮保质期的影响

肉类工业 2018年第12期 34-36,41页

作者：胡瑞瑞西南大学动物科学学院重庆荣昌402460

研究了乳酸链球菌素、茶多酚和植酸对泡椒猪皮细菌总数、TVB-N、p H值的影响。实验结果表明,3种物质对泡椒猪皮的保鲜期均有一定程度的影响,最佳工艺参数为:乳酸链球菌素0. 50%,茶多酚0. 30%,植酸0. 20%。在此最佳工艺参数下,泡椒猪皮... 详细信息

研究了乳酸链球菌素、茶多酚和植酸对泡椒猪皮细菌总数、TVB-N、p H值的影响。实验结果表明,3种物质对泡椒猪皮的保鲜期均有一定程度的影响,最佳工艺参数为:乳酸链球菌素0. 50%,茶多酚0. 30%,植酸0. 20%。在此最佳工艺参数下,泡椒猪皮的保鲜期达63d。

关键词：乳酸链球菌素泡椒猪皮保质期

赤松纯林不同松枯梢病病级针叶的内生真菌多样性及群落结构

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林业科学 2020年第9期56卷 51-57页

作者：谢宪梁军朱彦鹏胡瑞瑞程元张星耀中国林业科学研究院森林生态环境与保护研究所国家林业和草原局森林保护学重点实验室北京100091 昆嵛山森林生态系统国家定位观测研究站烟台264100 中国环境科学研究院北京100012

【目的】研究赤松纯林中不同枯梢病病级的赤松针叶内生真菌多样性及群落结构,分析病—非病针叶内生真菌的多样性以及群落结构差异,为赤松纯林经营提供依据。【方法】采用高通量测序技术对真菌ITS1区进行测序,利用生物信息学方法分析赤... 详细信息

【目的】研究赤松纯林中不同枯梢病病级的赤松针叶内生真菌多样性及群落结构,分析病—非病针叶内生真菌的多样性以及群落结构差异,为赤松纯林经营提供依据。【方法】采用高通量测序技术对真菌ITS1区进行测序,利用生物信息学方法分析赤松纯林中赤松无病斑和不同染病程度的针叶内生真菌的多样性和群落结构。【结果】在赤松纯林中,赤松无病斑针叶内生真菌的多样性高于染病针叶的内部真菌多样性;无病斑针叶中内生真菌的优势菌为多臂菌属和暗色球菌属,在枯梢病菌的侵染后群落结构发生改变;主坐标分析结果显示,无病斑针叶内生真菌与受侵染的针叶内真菌的群落构成差异显著;染病较轻的针叶与无病斑针叶相比,共生营养型真菌占比下降,病理营养型真菌占比增高,而腐生营养型真菌在全部针叶样本均占有较高的比例(37.15%~65.87%)。【结论】在赤松纯林中,赤松针叶内生真菌的多样性及群落结构受到枯梢病侵染的影响,无病斑针叶与染病针叶内生真菌群落结构差异显著。真菌营养型分类证实腐生营养型真菌和共生营养型真菌在无病斑针叶中为主要真菌,而在染病较轻针叶中以病理营养型真菌为主。

关键词：赤松松枯梢病内生真菌群落结构

Ag修饰的多孔Co(OH)_2纳米阵列薄膜的制备及其性能

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安徽大学学报（自然科学版） 2018年第2期42卷 74-78页

作者：丁丽君胡蕊蕊吴明在安徽大学物理与材料科学学院安徽省信息材料与器件重点实验室安徽合肥230601

采用水热沉积法和化学还原法制备银修饰的多孔氢氧化钴纳米阵列薄膜,使用X光衍射仪和扫描电镜对样品进行表征.性能测试结果表明,Co(OH)_2/Ag复合材料具有优异的循环稳定性,1 200次循环后其比电容仍然保持869.2F·g^(-1),比氢氧化钴纳米... 详细信息

采用水热沉积法和化学还原法制备银修饰的多孔氢氧化钴纳米阵列薄膜,使用X光衍射仪和扫描电镜对样品进行表征.性能测试结果表明,Co(OH)_2/Ag复合材料具有优异的循环稳定性,1 200次循环后其比电容仍然保持869.2F·g^(-1),比氢氧化钴纳米阵列薄膜高出155F·g^(-1).

关键词： Co(OH)2/Ag 超级电容器电化学性能