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A Novel Hollow Carbon@MnO_(2) Electrospun Nanofiber Adsorbent for Efficient Removal of Pb^(2+) in Wastewater

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Chemical Research in Chinese Universities 2021年第3期37卷 496-504页

作者： LI Wenyan LI Yanzi liu jiadi CHAO Shen YANG Tianyi LI Lijuan WANG Ce LI Xiang Alan G.MacDiarmid Institute Jilin UniversityChangchun130012China Teaching Experimental Center Hebei Normal University for NationalitiesChengde067000China College of Plant Science Jilin UniversityChangchun130062China Department of Chemistry and Biochemistry California State UniversityLong Beach1250 Bellflower Blvd.Long BeachCA90840USA

Lead ion(Pb^(2+))is one of the most hazardous heavy metal ions in aquatic *** materials and manganese dioxide(MnO_(2))have been shown to be prospective adsorbents to cope with the lead *** this study,a novel hollow carbon@MnO_(2) composite nanofiber adsorbent was prepared by the combination of electrospinning and *** PAN nanofiber membrane is subjected to a pre-oxidation and carbonization process,and then the obtained carbon nanofibers react with KMnO4 solution during the hydrothermal process to develop the hollow carbon@MnO_(2) *** hollow carbon@MnO_(2) nanofibers displayed a higher adsorption capacity of Pb^(2+)than carbon and MnO_(2)/PDA/PAN *** maximum adsorption capacity toward Pb^(2+)by hollow carbon@MnO_(2) nanofibers was 460.83 mg/*** 5 adsorption-desorption cycles,the carbon@MnO_(2) nanofibers had a good recyclability and the removal efficiency remained 81.47%.Moreover,the removal efficiency of the hollow composite nanofibers for Pb^(2+)from real wastewater could reach 94.37%.This work shows a strategy for synthetics of the hollow carbon@MnO_(2) nanofibers,which exhibits a promising potential in actual wastewater treatment.

关键词： Carbon@MnO_(2)composite Hollow nanofiber Electrospinning Lead adsorption

Adsorption and Visible Light Photocatalytic Degradation of Electrospun PAN@W_(18)O_(49) Nanofibers

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Chemical Research in Chinese Universities 2021年第3期37卷 428-435页

作者： MA Yuying HE Dayong liu jiadi WANG Yuannan YANG Mei WANG Hao QIU Ju LI Wenyan LI Yongxin WANG Ce Alan G.MacDiarmid Institute College of ChemistryJilin UniversityChangchun130012P.R.China College of Plant Science Jilin UniversityChangchun130062P.R.China College of New Energy and Environment Jilin UniversityChangchun130021P.R.China

Low density and high porosity polyacrylonitrile(PAN)nanofibers prepared by electrospinning were used as brackets for photocatalyst W_(18)O_(49) to prepare a kind of light weight and easy recycling water purification material for the first *** influence of tungsten source concentration on the formation of W_(18)O_(49) during a solvothermal process was systematically *** prepared PAN@W_(18)O_(49) nanofibers(NFs)utilize the outstanding visible light photocatalytic performance and the adsorption performance of W_(18)O_(49),and at the same time give the advantages of low density and easy *** pollutant removal performance of the composite nanofibers was investigated by using five contaminants including rhodamine B(RhB),methylene blue(MB),malachite green(MG),methyl orange(MO)and chlortetracycline(CTC)as *** them,the degradation process of rhodamine B has been studied in *** five cycles,the degradation efficiency did not decrease significantly,showing excellent reusability of PAN@W_(18)O_(49) ***,the adsorption performance of PAN@W_(18)O_(49) NFs during the photocatalytic process was also studied in *** with recently reported literature,the degradation efficiency of organic pollutants by PAN@W_(18)O_(49) NFs showed better performance,and PAN@W_(18)O_(49) NFs felt had a promising prospect in the field of degradation of contaminants.

关键词： Photocatalysis Adsorption Electrospinning Solvothermal reaction Dye degradation

Novel isostructural iron‐series‐MOF calcined derivatives as positive and negative electrodes: A new strategy to obtain matched electrodes in a supercapacitor device

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SmartMat 2023年第3期4卷 56-69页

作者： Yawen Dong jiadi liu Hui Zhang Qingqing Li Feifei Mao Aimin Lu Hua Wu Kuaibing Wang Cheng Zhang Qichun Zhang Jiangsu Key Laboratory of Pesticide Sciences Department of ChemistryCollege of SciencesNanjing Agricultural UniversityNanjingChina College of Resources and Environmental Sciences Nanjing Agricultural UniversityNanjingChina Jiangsu Key Laboratory of Micro and Nano Heat Fluid Flow Technology and Energy Application School of Physical Science and TechnologySuzhou University of Science and TechnologySuzhouChina Department of Materials Science and Engineering City University of Hong KongHong Kong SARChina

The performance of asymmetric supercapacitors(ASCs)is strongly restricted by the capacity gap between the positive and negative *** address this issue,two new electrode materials deriving from Co‐and Fe‐based metal–organic frameworks(MOFs,Co‐TAMBA‐d,and Fe‐TAMBA‐d)through a single‐step sintering method have been developed by considering the superiorities of the derivatives of MOFs including large surface areas,sufficient metal‐atom‐doping content,and extreme surface wettability to the bath *** as‐prepared Co‐TAMBA‐d as a positive electrode delivers typical pseudocapacitive behavior with the improvement of capacity,which is better than those of pristine MOF materials,while Fe‐TAMBA‐d as negative electrodes displays better electrochemical behavior than those of activated *** based on these two electrodes exhibits excellent energy density and power density of 47Wh/kg and 1658 W/kg,respectively,where this device can maintain prominent cycling stability with capacity retention after 5000 cycles being about 75%.Furthermore,the capacity can feed a series of red light‐emitting diodes,which gives solid evidence of the potential *** results can afford the feasibility of isostructural MOF derivatives as promising electrodes in novel ASCs.

关键词： asymmetric supercapacitor Co‐and Fe‐based MOFs isostructural MOFs MOF derivatives

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石材加工粉末废料生产建筑砌墙砖研究

非金属矿 2012年第6期35卷 32-34页

作者：刘家弟山东理工大学资源与环境工程学院山东淄博255049

讨论了石材加工粉末废料生产建筑砌墙砖的原料配比、粒级组成、成型水分、成型压力和养护制度,确定了最佳工艺参数,探讨了制品强度机理。在最佳参数条件下,制品的抗压强度可达到10级砖以上标准。

关键词：石材花岗岩粉末废料成型养护

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石材加工粉末废料生产加气混凝土砌块研究

非金属矿 2014年第4期37卷 50-52页

作者：刘家弟山东理工大学资源与环境工程学院山东淄博255049

讨论了石材加工粉末废料生产加气混凝土砌块的原料性质、原料配比、发泡剂用量、料浆水分和养护制度等影响因素,确定了最佳工艺参数,探讨了砌块强度机理。在最佳工艺参数条件下,可生产出10级以上加气混凝土砌块。

关键词：石材加工粉末废料养护加气混凝土砌块

带压制锚具的高钒镀层拉索火灾后的力学性能（英文）

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天津大学学报（自然科学与工程技术版） 2017年第B07期50卷 7-17页

作者：卢杰刘红波刘佳迪水利工程仿真与安全国家重点实验室(天津大学) 天津300072 天津大学建筑工程学院天津300072

高钒镀层拉索作为一种主要受力构件越来越广泛地应用于预应力钢结构当中。若火灾后结构整体未发生倒塌,则需要对其中拉索性能的改变进行准确评估以确保安全。本文对带有工程中常用的压制锚具的高钒拉索火灾后力学性能进行了试验研究。... 详细信息

高钒镀层拉索作为一种主要受力构件越来越广泛地应用于预应力钢结构当中。若火灾后结构整体未发生倒塌,则需要对其中拉索性能的改变进行准确评估以确保安全。本文对带有工程中常用的压制锚具的高钒拉索火灾后力学性能进行了试验研究。对经历13个预定温度后的拉索试件进行拉伸试验,考虑了空气自然冷却和消防喷水冷却两种冷却方式。试验得到了试件的荷载-位移曲线、初始刚度、承载力和变形能力等力学性能,并讨论了锚具的影响。拉索试件的力学性能在经历超过400℃高温后明显改变,此外不同冷却方式的影响也非常显著:经过消防喷水冷却的拉索试件在经历700℃高温后几乎丧失了全部承载力和变形能力。最后提出了计算带压制锚具的高钒拉索火灾后力学性能的经验公式,并考虑不同冷却方式影响。

关键词：高钒镀层拉索压制锚具火灾后力学性能冷却方式经验公式

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柱承重式钢结构模块建筑抗震性能试验研究

天津大学学报（自然科学与工程技术版） 2021年第2期54卷 122-132页

作者：刘洋陈志华刘佳迪钟旭天津大学建筑工程学院天津300072 天津大学水利工程仿真与安全国家重点实验室天津300072

柱承重式钢结构模块建筑是将工厂预制完成的模块单元在现场进行拼接组装的一种新型结构体系,其建造方式及结构组成不同于传统钢结构,目前尚缺乏结构层次的抗震性能研究.本文基于角件旋转式单元间连接节点,完成了双层足尺柱承重式模块框... 详细信息

柱承重式钢结构模块建筑是将工厂预制完成的模块单元在现场进行拼接组装的一种新型结构体系,其建造方式及结构组成不同于传统钢结构,目前尚缺乏结构层次的抗震性能研究.本文基于角件旋转式单元间连接节点,完成了双层足尺柱承重式模块框架结构低周往复加载试验,得到了该结构的承载性能、破坏模式及应变分布.试验结果表明结构具有较好的滞回性能,当结构中下层模块框架在达到0.04 rad层间位移角时仍保持较高的承载能力,满足美国现行规范AISC 341-16中特殊抗弯框架的延性要求;下层框架地板梁右端最终发生贯通断裂破坏,而左端在盖板外翼缘上形成明显塑性铰;角件旋转式连接节点尽管出现一定程度的张开但可以有效地传递内力未发生破坏.当下层框架内部梁柱节点破坏后,继续进行推覆试验,单元间连接节点张开量随之增加,停止试验时承载力已超出结构发生破坏后的荷载,表明结构具有一定的残余承载性能,同时模块结构在单元内部节点发生破坏后连接区域处内力会重新分布,此时对于单元间连接节点性能应予以重视.

关键词：钢结构模块建筑柱承重式模块单元角件旋转式单元间连接节点双层足尺试验低周往复加载

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脱硫石膏粉煤灰胶结材研究

非金属矿 2005年第4期28卷 34-35页

作者：董风芝刘家弟山东理工大学资源与环境工程学院淄博255049

原状脱硫石膏,不需高温加工成半水石膏,与粉煤灰混合后,在水泥、石灰等激发剂的作用下,可形成具有较高强度、较低表观密度、良好抗水性及保温隔热性能的胶结材。研究表明,激发剂、成型水料比是影响脱硫石膏、粉煤灰胶结材性能的主要因素。

关键词：脱硫石膏胶结材粉煤灰保温隔热性能半水石膏高温加工表观密度激发剂抗水性水料比混合水泥石灰成型

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用陶瓷粉末废料生产加气混凝土砌块的研究

新型建筑材料 2017年第9期44卷 97-99页

作者：刘家弟吴洋山东理工大学资源与环境工程学院山东淄博255000 淄博市环境保护局临淄分局山东淄博255049

研究了用陶瓷粉末废料生产加气混凝土砌块的原料及配比、发泡剂用量、水料比和养护制度等因素,确定了最佳工艺参数。研究表明,在陶瓷粉末废料用量为73.5%、生石灰用量为18%、水泥用量为7%、石膏用量为1.5%、铝粉用量为0.9 kg/(m^3制品)... 详细信息

研究了用陶瓷粉末废料生产加气混凝土砌块的原料及配比、发泡剂用量、水料比和养护制度等因素,确定了最佳工艺参数。研究表明,在陶瓷粉末废料用量为73.5%、生石灰用量为18%、水泥用量为7%、石膏用量为1.5%、铝粉用量为0.9 kg/(m^3制品)、水料比为0.6、恒温蒸气压力为1.2~1.4 MPa的蒸压养护制度下,制备的加气混凝土砌块干密度小于560 kg/m^3,抗压强度大于3.7 MPa。

关键词：墙地砖陶瓷粉末废料蒸压养护加气混凝土砌块、