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Highly efficient and stable CuZr-based metallic glassy catalysts for azo dye degradation

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Journal of Materials Science & Technology 2020年第11期42卷 88-97页

作者： Bowen Zhao Zhengwang Zhu Xin Dong qin zhengkun Li Haifeng Zhang Shenyang National Laboratory for Materials Science Institute of Metal ResearchChinese Academy of SciencesShenyang110016China School of Materials Science and Engineering University of Science and Technology of ChinaShenyang110016China Institute of Rare and Scattered Elements College of ChemistryLiaoning UniversityShenyang110036China

Metallic glasses with the unique disordered atomic structure and metastable nature have been recently applied to degrade the azo dyes and other organic pollutants based on their superior catalytic *** this work,the functional properties of six Cu Zr-based metallic glassy ribbons with the different nominal components in degrading Acid OrangeⅡ(AOⅡ)azo dyes were *** Cu47.5Zr46Al6.5 metallic glassy ribbons could exhibit the more advanced catalytic performance for degradation process,which could completely degrade azo dye aqueous solution within 30 ***,the Cu47.5Zr46Al6.5 metallic glassy ribbons also showed the excellent cyclic stability along with approximately 97.68%degradation efficiency after 10 *** excellent catalytic performance and stability are closely related to the synergistic effect of exposed copper nanoparticles and produced copper oxides in the reaction,which contributes to accelerate the generation of more hydroxyl radicals(·OH)to react with dye *** findings can be able to develop a novel potential metallic glassy material for the functional application of wastewater treatment.

关键词： Metallic glasses Catalytic performance Degradation Azo dyes

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1*8信道微环谐振波分复用器的结构设计

长春理工大学学报（自然科学版） 2007年第1期30卷 9-14页

作者：王现银郑传涛秦正坤闫欣马春生姜会林长春理工大学长春130012 吉林大学电子科学与工程学院长春130012

微环谐振波分复用器(MRRWM)利用微环谐振器(MRR)的滤波选频功能,把主信道中输入的多个工作波长从不同输出信道中分离出来,从而实现其分波功能。尽管MRRWM以MRR为基础,但由于微环型器件结构的特殊性,对MRRWM必须进行更为严格的设计与分... 详细信息

微环谐振波分复用器(MRRWM)利用微环谐振器(MRR)的滤波选频功能,把主信道中输入的多个工作波长从不同输出信道中分离出来,从而实现其分波功能。尽管MRRWM以MRR为基础,但由于微环型器件结构的特殊性,对MRRWM必须进行更为严格的设计与分析。本文通过对1×8信道硅基聚合物MRRWM的折射率分布、波导尺寸、谐振级数、耦合层厚度等结构参数的合理优化,不仅从理论上消除该器件的模式双折射效应,而且提出一种降低器件制造难度的有效方法。

关键词：波分复用器参数优化特性分析

Mechanism and kinetics of treatment of acid orange II by aged Fe-Si-B metallic glass powders

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Journal of Materials Science & Technology 2017年第10期33卷 1147-1152页

作者： Xindong qin zhengkun Li Zhengwang Zhu Huameng Fu Hong Li Aimin Wang Hongwei Zhang Haifeng Zhang Institute of Metal Research Chinese Academy of Sciences School of Materials Science and Engineering University of Science and Technology of China

The mechanism and kinetics of acid orange II（AOII） treated by aged gas-atomized Fe-Si-B metallic glass（MG） powders were investigated in this study. The decolorization reaction is shown to obey the pseudofirst-order kinetic model, and the treatment processes could be divided into two stages： a slow step followed by a rapid one. This observation is in accordance with the following results, the azo dye is simply adsorbed onto the Fe-based MG powders in the initial stage, because the oxide layer coated on the powder surface depresses the degradation reaction by covering the activity sites, and then the degradation occurs with the desquamation of the powders. The AOII could be degraded with a rapid reaction rate when the Fe-based MG powders are applied to the treatment process again, because of the consumption of the oxide layer and the unchanged core of the Fe-based MGs. These findings will promote the practical application of MGs in degrading azo dyes.

关键词： Metallic glasses Azo dyes Degradation Kinetics

Fe-based metallic glass:An efficient and energy-saving electrode material for electrocatalytic degradation of water contaminants

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Journal of Materials Science & Technology 2018年第12期34卷 2290-2296页

作者： Xindong qin zhengkun Li Zhengwang Zhu Huameng Fu Hong Li Aimin Wang Hongwei Zhang Haifeng Zhang Institute of Metal Research Chinese Academy of Sciences Dongguan EONTEC. Co. Ltd.

Excessive consumption of electrical energy has hampered the widespread application of electrochemical technology for degradation of various contaminants. In this paper, a Fe-based metallic glass(MG) was demonstrated as a new type of electrocatalyst to effectively and economically degrade an azo dye. In comparison to other typical electrodes, Fe-based MG electrodes exhibit a minimized degradation time, and the specific energy is 4-6 orders of magnitude lower than that of dimensionally stable anode(DSA), metal-like boron-doped diamond(BDD) and other electrodes. As sacrificial electrode materials, Fe-based MGs have less specific electrode mass consumption than iron electrodes. The use of Fe-based MGs will promote the practical application of electrochemical technology and the use of MGs as functional materials.

关键词： Metallic glasses Azo dyes Electrochemical degradation Catalysis

Green strategy of scaleably synthesizing copper nanocomposites with remarkable catalytic activity for wastewater treatment

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Journal of Materials Science & Technology 2021年第36期95卷 158-166页

作者： Bowen Zhao Hailong Li zhengkun Li Shaofan Ge Xindong qin Shiming Zhang Aimin Wang Haifeng Zhang Zhengwang Zhu Shi-changxu Innovation Center for Advanced Materials Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China School of Materials Science and Engineering University of Science and Technology of ChinaShenyang 110016China CAS Key Laboratory of Nuclear Materials and Safety Assessment Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China Institute of Rare and Scattered Elements College of ChemistryLiaoning UniversityShenyang 110036China qingdao Yunlu Advanced Materials Technology Co. Ltd.Qingdao 266232China

The functional copper nanocomposites(Cu NCs)have received increasing attention in the environmental catalysis application for wastewater treatment due to their superior catalytic activity and ***,overcoming the pH limitations towards the neutral and alkaline wastewater remains a tricky *** this work,we demonstrate a green strategy to synthesize Cu NCs with coexistence of active Cu,Cu_(2)O and ZrO_(2)by self-propagating combustion of metallic glassy ribbons,which exhibit the extremely superior catalytic performance for degradation reaction,providing full conversion of organic dyes completely to the environmental friendly small species(efficiency>99%)under acidic,neutral and alkaline *** with all other catalysts developed thus far,the novel Cu NCs catalysts with more active sites present much enhanced catalytic capability of degradation efficiency without the use of any chemical reagents for neutral and alkaline organic dye *** possible decomposition pathways of organic dyes for different p H systems were systematically *** importantly,the two kinds of catalytic mechanism related to high reactivity of nanoscale Cu/Cu_(2)O and strong oxidizing capability of activated·OH/·O_(2)^(-)radicals can also be successfully confirmed under different pH *** green synthetic approach can be extended to design the various M-based nanocomposites(M=Fe,Co,Ni,Ag,Pd)as efficient catalysts for the functional applications of many chemical reactions.

关键词： Copper nanocomposites Metallic glasses Self-propagating combustion Catalytic degradation Electron transfer Organic dyes

MnO_(2)修饰的NaYF_(4):18%Yb^(3+),0.5%Tm^(3+)/NaYF_(4)核壳纳米晶的制备及防伪应用研究

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信息记录材料 2022年第6期23卷 28-31页

作者：张永玲刘香张海涵刘旭辉秦政坤吉林师范大学吉林四平132000

为了解决当前社会频繁出现的假冒伪劣问题,提出了基于MnO_(2)修饰的高亮度的NaYF_(4):18%Yb^(3+),0.5%Tm^(3+)/NaYF_(4)核壳纳米晶材料的荧光防伪应用研究。首先通过高温热分解法合成了晶相为β-相,形貌特征为六边形,结晶度高,分布均匀... 详细信息

为了解决当前社会频繁出现的假冒伪劣问题,提出了基于MnO_(2)修饰的高亮度的NaYF_(4):18%Yb^(3+),0.5%Tm^(3+)/NaYF_(4)核壳纳米晶材料的荧光防伪应用研究。首先通过高温热分解法合成了晶相为β-相,形貌特征为六边形,结晶度高,分布均匀的NaYF_(4):18%Yb^(3+),0.5%Tm^(3+)核纳米晶和NaYF_(4):18%Yb^(3+),0.5%Tm^(3+)/NaYF_(4)核壳纳米晶。之后通过水热法合成了花状纳米片形态的MnO_(2)纳米片和物理混合的方法合成了NaYF_(4):18%Yb^(3+),0.5%Tm^(3+)/NaYF_(4)MnO_(2)复合粒子。我们将NaYF_(4):18%Yb^(3+),0.5%Tm^(3+)/NaYF_(4)@MnO_(2)复合粒子水溶液作为防伪材料书写了字母“L”,在自然光下可以观察到黑色的字母,字母“L”在980 nm连续泵浦光照射下无明显变化。字母“L”在涂抹AA水溶液后可在980 nm连续泵浦光照射下显示明亮的蓝紫色荧光。因此可以推断出我们所合成的MnO_(2)修饰的NaYF_(4):18%Yb^(3+),0.5%Tm^(3+)/NaYF_(4)核壳纳米晶材料可以用于荧光防伪。实验表明提出的荧光防伪方法可以进一步提升防伪的安全性。

关键词： MnO_(2)纳米片核壳纳米晶荧光防伪

维普期刊数据库博看期刊

Efficient Transformation of indica Rice Mediated by Agrobacterium and Generation of NcGDH Transgenic Genic Male-Sterile Rice with High Nitrogen Use Efficiency

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Rice science 2021年第6期28卷 529-531,I0030-I0036页

作者： LIU Cong TANGg Dongying ZHOU zhengkun ZENG Hui HU Xiaochun TAN Vanning qin Peng DENG Yong WU Jicai WANG Yan YANG Yuanzhu YUAN Dingyang LIU Xuanming LIN Jianzhong Hunan Province Key Laboratory of Plant Functional Genomics and Developmental Regulation College of BiologyHunan UniversityChangsha 410082China Academy of Seed Industry of Hunan Yahua Changsha 410001China State Key Laboratory of Hybrid Rice Hunan Hybrid Rice Research CenterHunan Academy of Agricultural SciencesChangsha 410125China

Although some indica rice varieties have already been transformed by Agrobacterium,there is still great demand of developing transformation system for economically important indica ***,a fast and efficient method of Agrobacterium-mediated transformation for indica rice was developed,and an NcGDH transgenic genic male-sterile(GMS)indica rice 628S was generated using this *** regenerated transgenic plantlets can be obtained within three months,and the transformation efficiency achieved about 17%.NcGDH transgenic 628S exhibited an enhanced capacity of ammonium assimilation and more effective panicles under low nitrogen *** the hybrid rice lines generated by NcGDH transgenic 628S showed 8%-27%yield advantage than those by the non-transgenic *** together,these results provide an efficient transfbnnation method for indica rice and an opportunity to improve nitrogen use efficiency(NUE)and the heterosis of hybrid rice.

关键词： sterile Transformation transformation

基于深度访谈扎根分析的绿色建筑项目脆弱性与风险关系机理研究

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土木工程学报 2016年第8期49卷 120-132页

作者：秦旋李正焜莫懿懿华侨大学福建厦门361021

脆弱性作为一个与风险密切相关的因素,由于其隐蔽性特性,在传统工程项目风险的研究中未得到足够的重视。因此,本文从风险管理的视角,试图对绿色建筑项目脆弱性的概念和内涵进行明确,探究绿色建筑项目脆弱性与风险的关系机理。首先运用... 详细信息

脆弱性作为一个与风险密切相关的因素,由于其隐蔽性特性,在传统工程项目风险的研究中未得到足够的重视。因此,本文从风险管理的视角,试图对绿色建筑项目脆弱性的概念和内涵进行明确,探究绿色建筑项目脆弱性与风险的关系机理。首先运用经典扎根理论方法对访谈资料进行实质性编码,归纳和明确了项目脆弱性和风险2个核心范畴,进一步通过扎根理论的理论编码程序,构建绿色建筑项目脆弱性与风险的关系机理理论框架。整个研究运用扎根理论,通过深度访谈和案例分析,揭示脆弱性对项目风险的影响路径和机理,弥补现阶段绿色建筑项目风险研究忽略脆弱性的不足,研究成果可为绿色建筑项目风险管理提供科学依据。

关键词：绿色建筑项目风险脆弱性扎根理论深度访谈与案例

TRIM8基因在小鼠组织和早期胚胎中的表达及其功能初探

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西北农林科技大学学报（自然科学版） 2022年第5期50卷 9-17页

作者：马增友秦歌郑浩懿卢郑坤张文昌彭辉福建农林大学动物科学学院福建福州350002

【目的】研究TRIM8基因在小鼠组织和早期胚胎中的表达情况及其沉默后对早期胚胎体外发育的影响。【方法】采用RT-PCR、免疫印迹分别检测TRIM8基因及其编码的蛋白在小鼠不同组织(心、肝、脾、肺、肾、胃、肠、肌肉、子宫、卵巢和睾丸)中... 详细信息

【目的】研究TRIM8基因在小鼠组织和早期胚胎中的表达情况及其沉默后对早期胚胎体外发育的影响。【方法】采用RT-PCR、免疫印迹分别检测TRIM8基因及其编码的蛋白在小鼠不同组织(心、肝、脾、肺、肾、胃、肠、肌肉、子宫、卵巢和睾丸)中的表达情况,采用免疫组化技术对TRIM8在卵巢中进行定位。利用实时荧光定量PCR(RT-qPCR)、免疫印迹法检测TRIM8基因及其编码的蛋白在小鼠早期胚胎(1-细胞胚胎、2-细胞胚胎、4-细胞胚胎、8-细胞胚胎、桑葚胚和囊胚)中的表达规律,用免疫荧光结合激光共聚焦显微镜技术对TRIM8在早期胚胎中进行定位。利用RNA干扰技术沉默TRIM8基因,研究该基因沉默对小鼠早期胚胎体外发育的影响。【结果】TRIM8基因及其编码的蛋白在小鼠不同组织中均表达,但在子宫、卵巢和睾丸中表达水平相对较高。在卵巢中,TRIM8蛋白主要定位在不同发育阶段的卵母细胞中。TRIM8基因及其编码的蛋白在早期胚胎中均有表达,但其mRNA表达水平在1-细胞到4-细胞期胚胎中的表达水平显著高于8-细胞到囊胚期胚胎。TRIM8蛋白主要定位在不同时期胚胎的胞质中。TRIM8基因沉默组的囊胚率显著低于对照组(P<0.05)。【结论】TRIM8基因及其编码的蛋白在小鼠各组织及早期胚胎中均有表达,主要定位在早期胚胎的胞质中;沉默TRIM8基因会显著降低囊胚发育率。TRIM8可能参与调控小鼠早期胚胎的发育进程。

关键词： TRIM8基因 RNA干扰早期胚胎发育小鼠