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安徽科技学院学报,2007,21(5):33～36Journal of Anhui Science and Technol ogy University室温固相法合成纳米层状双金属氢氧化物王军锋1,李子荣1,康志强2(1.安徽科技学院 应用化学系,安徽 凤阳 233100;2.西安理工大学 应用化学系,西安 710048)摘 要:首次报道了通过室温固相法,合成纳米层状双金属氢氧化物(简称LDH)。
考察了反应物配比、反应时间分别对试样物相的影响。
采用X-射线衍射仪(XRD)、透射电镜(TE M)分别对样品的物相、形貌、粒径等进行了表征。
结果表明,反应物配比、反应时间对产物物相有很大影响,镁铝比为3¬1,反应时间控制在60m in制备的样品分散性好,晶型单一,粒子呈针状,长120nm,宽20nm。
关键词:纳米粒子;室温固相法;层状双金属氢氧化物中图分类号:O611.62 文献标识码:A 文章编号:1673-8772(2007)05-0033-04Synthesis of Nano-l ayered Double Hydroxi des by SolidSt ate Reacti on at I ndoor TemperatureWANG Jun-feng1,DU Bao-zhong2,K ANG Zhi-qiang2,WANG Hai-xia1(1.Depart m ent of App lied Che m istry,Anhui Science and Technol ogy University,Fengyang233100,China;2.Depart m ent of App lied Che m istry,Xi’an University of Technol ogy,Xi’an710048,China) Abstract:The nanoparticle layered Double Hydr oxides(LDH)was synthesized by s olid state reacti on at indoor te mperature.The p r oducts were characterized by XRD,TE M,I R and ele ment analysis.The experi m ental result indicates,that the sa mp le takes the for m of needle,wide10n m,about l ong80n m.The method is a general,inex2 pensive and effecti on app r oach based on s olid state reacti on t o synthesized nano-layered double hydr oxides with unif or m size and shape in high yields.The mechanis m was studied p ri m arily.Key words:Nanoparticle;I ndoor te mperature s olid state reacti on;Nano-layered Double Hydr oxides室温固相化学反应是上世纪80年代末发展起来的一种新的合成方法。
包装工程第44卷第19期·104·PACKAGING ENGINEERING2023年10月层状双金属氢氧化物/聚乙烯醇气体阻隔薄膜材料制备及性能研究张子怡，李梦冉，薛程，范婷婷，李欢欢，李中波*（安徽农业大学轻纺工程与艺术学院，安徽合肥230036）摘要：目的研发出一种具有优异氧气阻隔性能的柔性薄膜，其在食品包装领域具有良好的应用前景。
方法以具有生物降解性能的聚乙烯醇（PVA）为成膜基材，镁铝层状双金属氢氧化物（MgAl-LDH）为改性剂，柠檬酸为交联剂，采用流延法制备出具有优异气体阻隔性能的PVA/MgAl-LDH复合薄膜。
结果随着柠檬酸的含量的增加，复合薄膜的亲水性能逐渐增加，阻隔性能逐渐下降；随着复合薄膜中MgAl-LDH的含量的增加，复合薄膜的疏水性能和阻隔性能逐渐提高。
当复合薄膜中MgAl-LDH的质量分数为1.5%时，薄膜的力学性能最好，抗拉强度为42 MPa，断裂伸长率为16.7%，此MgAl-LDH质量分数下薄膜的气体阻隔性能也最优异，气体透过量为16 mL/(m2·24 h·0.1 MPa)。
结论柠檬酸的引入增加了薄膜内部亲水基团的数量，提升了复合薄膜的亲水性能。
MgAl-LDH可以减少PVA薄膜内部自由体积，提升PVA薄膜的力学性能和阻隔性能。
关键词：聚乙烯醇；镁铝层状双金属氢氧化物；柠檬酸；复合薄膜；阻隔性能中图分类号：TS206.4 文献标识码：A 文章编号：1001-3563(2023)19-0104-08DOI：10.19554/ki.1001-3563.2023.19.014Preparation and Properties of PVA/MgAl-LDH Gas Barrier FilmsZHANG Zi-yi, LI Meng-ran, XUE Cheng, FAN Ting-ting, LI Huan-huan, LI Zhong-bo*(College of Light Textile Engineering and Art, Anhui Agricultural University, Hefei 230036, China)ABSTRACT: The work aims to develop a flexible film with excellent oxygen barrier performance and good application prospects in the field of food packaging. The PVA/MgAl-LDH composite film with excellent gas barrier performance was prepared by the casting method with biodegradable polyvinyl alcohol (PVA) as the film-forming substrate, mag-nesium-aluminum layered bimetallic hydroxide (MgAl-LDH) as the modifier, and citric acid as the cross-linking agent.The experimental results showed that with the increase of citric acid content, the hydrophilic property of the composite film gradually increased and the barrier performance decreased gradually. With the increase of MgAl-LDH content in the composite film, the hydrophobic property and barrier property of the composite film gradually increased. When the content of MgAl-LDH in the composite film was 1.5%, the mechanical properties of the film were the best, with a ten-sile strength of 42 MPa and an elongation at break of 16.7%. The gas barrier performance of the film with this MgAl-LDH content was also the best, with a gas permeability of 16 mL/(m2·24 h·0.1 MPa). In addition, the introduc-tion of citric acid increases the number of hydrophilic groups inside the film, and the hydrophilic properties of the composite film are enhanced. MgAl-LDH can reduce the free volume inside the PVA film and enhance the mechanical收稿日期：2023-04-27基金项目：安徽省教育厅自然科学重点项目（2022AH050875）；安徽省科技重大专项（202103a06020005）；安徽省大学生创新创业项目（S202120364214）第44卷第19期张子怡，等：层状双金属氢氧化物/聚乙烯醇气体阻隔薄膜材料制备及性能研究·105·and barrier properties of the PVA film.KEY WORDS: polyvinyl alcohol; magnesium-aluminum layered bimetallic hydroxide; citric acid; composite film; bar-rier performance阻隔性薄膜指对气体、有机化合物等低分子量的化学物质具有非常低的透过性的薄膜。
收稿日期：2020‑12‑29。
收修改稿日期：2021‑03‑24。
国家自然科学基金(No.51572046)资助。
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E‑mail ：***************.cn第37卷第5期2021年5月Vol.37No.5867‑874无机化学学报CHINESE JOURNAL OF INORGANIC CHEMISTRYFeNi 层状双氢氧化物/TiO 2复合光催化剂的制备及其制氢性能崔文莉安琳张青红＊王宏志李耀刚侯成义(东华大学材料科学与工程学院，上海201620)摘要：层状双氢氧化物(LDH)的光生电子-空穴对易复合，虽然纳米薄片的结构促进了载流子分离，但其光催化效率仍然较低。
我们利用LDH 薄片结构的优势，将FeNi LDH 和TiO 2通过静电自组装复合，设计制备出新型高效的FeNi LDH/TiO 2复合光催化材料，评价了其光催化分解水产氢性能。
对其结构、光催化性能和光电化学等进行了详细表征。
结果表明，FeNi LDH 的高比表面积、复合物的异质结结构都有利于光生电荷的转移。
光催化产氢结果表明，FeNi LDH/TiO 2复合材料的产氢速率(22.6mmol·g -1·h -1)分别比纯TiO 2(0.1mmol·g -1·h -1)和FeNi LDH(0.05mmol·g -1·h -1)提高了226和452倍，表明了异质结在提高LDH 光催化效率方面的重要作用。
关键词：FeNi 层状双氢氧化物；静电自组装；异质结；光催化产氢中图分类号：O643.36文献标识码：A文章编号：1001‑4861(2021)05‑0867‑08DOI ：10.11862/CJIC.2021.108FeNi Layered Double Hydroxide/TiO 2Composite Photocatalyst:Preparation and Hydrogen Production PerformanceCUI Wen‑LiAN LinZHANG Qing‑Hong ＊WANG Hong‑ZhiLI Yao‑GangHOU Cheng‑Yi(School of Materials Science and Engineering,Donghua University,Shanghai 201620,China )Abstract:Layered double hydroxide (LDH)photogenerated electron‑hole pairs are easy to recombine.Although the unique structure of nanosheets promotes the separation of carriers,the photocatalytic efficiency is still low.In this paper,taking advantage of its thin‑film structure,FeNi LDH was combined with TiO 2by electrostatic self‑assembly method to design and prepare efficient FeNi LDH/TiO 2composite photocatalysts,and evaluated its hydrogen produc‑tion performance.Their structure,photocatalytic performance and photoelectrochemistry were characterized in detail.The results showed that the high specific surface area of FeNi LDH and the heterojunction structure of thecomposite were all conducive to photo‑generated charge transfer.The results of photocatalytic hydrogen production showed that the hydrogen production rate (22.6mmol·g -1·h -1)of FeNi LDH/TiO 2composite was 226and 452times higher than that of bare TiO 2(0.1mmol·g -1·h -1)and FeNi LDH (0.05mmol·g -1·h -1)respectively,indicating thecrucial role of heterojunction in improving the photocatalytic efficiency of LDH.Keywords:FeNi layered double hydroxide;electrostatic self‑assembly;heterojunction;photocatalytic hydrogen production0引言在减少化石燃料消耗、降低环境污染和缓解能源危机的推动下，寻求清洁和可再生能源吸引了研究人员的广泛关注。
新型锌基层状双氢氧化物的原位合成及其机制王亲媛;温笑寒;曾宪哲;章萍【摘要】Tricalcium aluminate(C3A)can form Calcium-Aluminum Layered double hydroxides(LDHs) during the hydration process.Taking advantage of this property and adding C3A to a solution containing zinc ion,the zinc-based LDHs were synthesized in situ by adjusting the initial concentration of zinc dioxide, reaction time and temperature.X-raydiffraction(XRD),Fourier transform infrared(FT-IR)and scanning electron microscopy(SEM)were also used to analyze the ZnAl-LDH synthesis and the factors affecting the removal efficiency of the Zn2+ by C3A.The results showed that zinc removal amount by C3A could reach 13.73mmol·g-1 with an initial zinc concentration of 14mmol·L-1,reaction time of 2.5h,and temperature at around 35℃.It was found that the in-situ synthesis of ZnAl-LDH was formed mainly via the cation exchange between Zn2+andCa2+on the main layers of CaAl-LDH,as well as the precipitation ofZn2+and Al(OH)4-.%铝酸三钙(C3A)水化过程中可形成钙铝层状双氢氧化物(CaAl-layered double hydroxide,CaAl-LDH),利用该特性,将C3A投加至含锌溶液中,通过调节初始Zn2+浓度、反应时间及温度等条件原位即时合成了锌基层状双氢氧化物(ZnAl-LDH),并以XRD、FT-IR、SEM等手段对产物结构、形貌进行表征.结果表明,14mmol·L-1初始Zn2+浓度,2.5h反应时间和35℃反应温度为最佳的合成条件,此时产物ZnAl-LDH层间距为0.89nm,Zn2+负载量为13.73mmol·-1.本文结合合成过程中溶液组分的变化情况,初步探究了ZnAl-LDH 原位即时形成机制,主要是C3A水化产物CaAl-LDH与Zn2+发生阳离子交换,以及自身溶解出的Al(OH)-4与Zn2+协同共沉淀.【期刊名称】《南昌大学学报（理科版）》【年(卷),期】2018(042)005【总页数】6页(P467-472)【关键词】铝酸三钙(C3A);锌基层状双氢氧化物(Zn-LDHs);合成;阳离子交换;溶解-再沉淀【作者】王亲媛;温笑寒;曾宪哲;章萍【作者单位】南昌大学资源环境与化工学院,江西南昌 330031;南昌大学资源环境与化工学院,江西南昌 330031;南昌大学资源环境与化工学院,江西南昌 330031;南昌大学资源环境与化工学院,江西南昌 330031;南昌大学鄱阳湖环境与资源利用教育部重点实验室,江西南昌 330031【正文语种】中文【中图分类】TQ172以水滑石为代表的层状双氢氧化物(Layered Double Hydroxides,简称LDHs)是一类新型化合物，因具有主层板可自组装性、层间阴离子可交换性及结构坍塌记忆效应等特点，被广泛应用于高分子复合材料、催化材料、环境治理等领域[3-5]。
化工进展Chemical Industry and Engineering Progress2024 年第 43 卷第 1 期2D 层状材料的燃料油氧化脱硫研究进展杨雪，刘可，张程翔，李东霖，王江芹，杨万亮（贵州大学化学与化工学院，贵州 贵阳 550025）摘要：二维（2D ）层状材料因其独特的性质在燃料油氧化脱硫领域应用广泛，如石墨烯和类石墨烯材料（如类石墨相氮化碳和六方氮化硼等）、2D 硅基材料、层状双金属氢氧化物、MXene 、2D 金属有机骨架材料、二硫化钼等。
本文从不同2D 层状材料出发，综述了如何构建催化氧化脱硫催化剂、催化剂脱硫效率以及脱硫过程和机制，并对2D 层状材料在氧化脱硫领域的研究现状进行了梳理。
然而，普通的2D 层状材料大多因为材料本身的催化性能不足，不能直接应用于燃料油氧化脱硫工艺。
因此，研究人员通过制造缺陷、元素掺杂、官能团改性和负载活性位点等方法对2D 层状材料进行改性并将其应用于催化氧化脱硫工艺。
最后，本文对2D 层状材料在氧化脱硫领域的研究方向提出了展望，指出了构建具有可控、开放2D 传输孔道的2D 层状氧化脱硫催化剂是未来脱硫领域研究的重要方向之一。
关键词：二维材料；燃料油；催化；氧化脱硫；二维孔道中图分类号：TE624；TQ426 文献标志码：A 文章编号：1000-6613（2024）01-0422-15Research progress of 2D layered materials for fuel oiloxidation desulfurizationYANG Xue ，LIU Ke ，ZHANG Chengxiang ，LI Donglin ，WANG Jiangqin ，YANG Wanliang(School of Chemistry and Chemical Engineering, Guizhou University, Guiyang 550025, Guizhou, China)Abstract: Two dimensional (2D) layered materials are widely used in the field of oxidative desulfurization of fuel oil due to their unique properties, such as graphene and other graphene-like materials (such as graphitic carbon nitride and hexagonal boron nitride), 2D silicon-based materials, layered double hydroxides, MXene, 2D metal-organic frameworks, molybdenum disulfide, etc . Starting from different 2D layered materials, this paper summarized how to build catalytic oxidation desulfurization catalysts, catalyst desulfurization efficiency, desulfurization process and mechanism, and combed the research status of 2D layered materials in the field of oxidative desulfurization. Nevertheless, most ordinary 2D layered materials cannot be directly applied to fuel oil oxidation desulfurization process because of their insufficient catalytic performance. Therefore, researchers modified 2D layered materials by manufacturing defects, element doping, functional group modification and loading active sites, and applied them to catalytic oxidation desulfurization process. Finally, this article presentes prospects for the research direction of 2D layered materials in the field of oxidative desulfurization, and pointes out that constructing 2D layered oxidative desulfurization catalysts with controllable and open 2D transport channels was one of综述与专论DOI ：10.16085/j.issn.1000-6613.2023-0259收稿日期：2023-02-24；修改稿日期：2023-04-26。
除硼方法的原理及应用贺融融;李小康;鱼涛;屈撑囤【摘要】硼作为一种微量元素, 在水溶液中以硼酸、硼酸盐、硼硅酸盐的形式存在, 对人类生产生活有利有弊, 当硼浓度过大时, 会影响周围环境和生物生存, 而化学沉淀法、吸附法、树脂法、膜分离法是现在去除污水中硼主要使用的方法.介绍了这几种除硼方法的原理及其在海水淡化、压裂返排液中的应用, 但是随着科学技术的发展我们需要对原有的方法进行升级优化和新的技术结合, 从而达到高效、节能、环保的环境治理理念.%Boron, as a microelement which is in the form of boric acid, borate and borosilicate in aqueous solution, has advantages and disadvantages for human production and life. When the concentration of boron is too high, it will affect the surrounding environment and biological survival. The chemical precipitation, adsorption, resin and membrane separation method are the main methods for removing boron from sewage. The principles of these methods and its application in seawater desalination and fracturing backflow were introduced. But with the development of science and technology, the original methods needed to be upgraded and optimized to achieve efficient, energy-saving, environmentally friendly environmental governance.【期刊名称】《广州化工》【年(卷),期】2019(047)001【总页数】4页(P17-19,40)【关键词】硼;除硼;压裂返排液;海水淡化【作者】贺融融;李小康;鱼涛;屈撑囤【作者单位】西安石油大学,陕西省油气田环境污染控制与储层保护重点实验室,陕西西安 710065;西安石油大学,陕西省油气田环境污染控制与储层保护重点实验室,陕西西安 710065;西安石油大学,陕西省油气田环境污染控制与储层保护重点实验室,陕西西安 710065;石油石化污染物控制与处理国家重点实验室,北京 102206;西安石油大学,陕西省油气田环境污染控制与储层保护重点实验室,陕西西安 710065;石油石化污染物控制与处理国家重点实验室,北京 102206【正文语种】中文【中图分类】TE9921 硼的存在形式及危害硼在自然界中主要以硼酸、硼酸盐、硼硅酸盐的形式存在，无单质硼元素的存在。
层状双氢氧化物和蒙脱石的剥离及其自组装戴璐逊;梁少彬;陈耀;谢襄漓;李存军;王林江【摘要】以钙基蒙脱石为原料,氟化钠为钠化剂,十六烷基三甲基溴化铵为有机改性剂采用离子交换法制备了有机蒙脱石(CTA-MMT);以硝酸镁、硝酸铝、氢氧化钠和十二烷基磺酸钠为原料,采用水热法制备了有机型镁铝层状双氢氧化物(MgAl-SDS-LDH);以氯仿为剥离介质,采用超声法剥离CTA-MMT和MgAl-SDS-LDH,分别获得了两种剥离型矿物溶胶,将其混合自组装制备了蒙脱石/层状双氢氧化物(MMT/LDH)组装材料.用XRD和AFM表征了CTA-MMT和MgAl-SDS-LDH及其剥离产物,并分析了组装材料的热稳定性.结果表明,CTA-MMT和MgAl-SDS-LDH在氯仿介质中剥离仅需20 min,剥离型CTA-MMT和MgAl-SDS-LDH片层平均厚度分别约为9和8 nm.MMT/LDH由剥离型CTA-MMT和MgAl-SDS-LDH片层有序组装而成,组装材料结构与MgAl-SDS-LDH和CTA-MMT的含量有关,其结构单元层间距2.59 nm(CTA-MMT含量较低时)随着组装材料中CTA-MMT含量的升高而转变为1.82 nm.MMT/LDH组装材料具有较单一的CTA-MMT或MgAl-SDS-LDH更高的热稳定性.【期刊名称】《日用化学工业》【年(卷),期】2018(048)007【总页数】7页(P392-398)【关键词】表面活性剂;蒙脱石;层状双氢氧化物;氯仿;剥离;自组装【作者】戴璐逊;梁少彬;陈耀;谢襄漓;李存军;王林江【作者单位】桂林理工大学材料科学与工程学院,广西桂林 541004;桂林理工大学材料科学与工程学院,广西桂林 541004;桂林理工大学材料科学与工程学院,广西桂林 541004;桂林理工大学化学与生物工程学院,广西桂林 541004;桂林理工大学材料科学与工程学院,广西桂林 541004;桂林理工大学材料科学与工程学院,广西桂林 541004【正文语种】中文【中图分类】TQ423.9蒙脱石(MMT)和层状双氢氧化物(LDH)分别属于阳离子型粘土矿物和阴离子型粘土矿物，其典型的层状结构和层间域环境特征使其能够被剥离形成二维纳米层状材料，这些剥离产物在纳米材料科学、化学、矿物学等领域具有广阔的应用前景[1，2]。
