A Shell‐by‐Shell Approach for Synthesis of Mesoporous Multi‐Shelled Hollow MOFs for Catalytic Applications

摘要

Abstract >Over the past two decades, advanced materials with hollow interiors have received significant attention in materials research owing to their great application potential across a vast number of technological fields. Though with great difficulty, multi‐shelled hollow metal–organic frameworks (MSHMs) have also been successfully synthesized in recent years. Herein, a rational shell‐by‐shell soft‐templating protocol has been devised to fabricate highly uniform multi‐shelled hollow cobalt‐imidazole‐based MOF (ZIF‐67). For the first time, it has become possible to endow mesoporosity to this new type of functional material (i.e., mesoporous MOFs). When used as carrier materials in catalytic reactions, in principle, these mesoporous MSHMs with high surface area not only improve the dispersity of metal nanoparticles (NPs), but also efficiently facilitate the mass diffusion of the reactions, resulting in enhanced catalyst activity. Moreover, the obtained MSHMs/M nanocomposites serve as base‐metal bifunctional catalysts for one‐pot oxidation‐Knoevenagel condensation cascade reaction, in which the MSHMs itself serves as a pristine active catalyst in addition to its role of catalyst support. The results demonstrate that excellent multifunctional catalysts can be achieved via preparing intrinsically microporous bulk MOFs into extrinsically mesoporous MSHMs which possess many structural merits that conventional bulk MOFs do not have. </abstract> </span> <span class="z_kbtn z_kbtnclass hoverxs" style="display: none;">展开▼</span> </div> <div class="translation abstracttxt"> <span class="zhankaihshouqi fivelineshidden" id="abstract"> <span>机译：</span><Abstract Type =“Main”XML：Lang =“en”> <标题类型=“main”>抽象</ title> <P>在过去的二十年中，由于跨越技术领域的应用潜力，具有空心内饰的先进材料在材料研究中得到了重大关注。虽然很难困难，但近年来也已成功地合成多壳中空金属 - 有机框架（MSHMS）。这里，已经设计了一种合理的逐壳软模板方案，以制造高度均匀的多壳中空钴 - 咪唑基MOF（ZIF-67）。首次，已经可以赋予这种新型功能材料（即介孔MOF）来赋予中渗透性。当用作催化反应中的载体材料时，原则上，具有高表面积的这些介孔MSHM不仅改善了金属纳米颗粒（NPS）的分散性，而且还有效地促进了反应的质量扩散，导致催化剂活性增强。此外，所获得的MSHMS / M纳米复合材料用作一锅氧化knoevenageL缩合级联反应的金属双官能催化剂，其中MSHMS本身还用作原始活性催化剂，除了其催化剂载体的作用。结果表明，通过将本质上微孔的块状MOF制备到外在的中孔MSHMS中，可以实现优异的多官能催化剂，该MSHMS具有许多常规散装MOF的结构优点。</ p> </摘要> </span> <span class="z_kbtn z_kbtnclass hoverxs" style="display: none;">展开▼</span> </div> </div> <div class="record"> <h2 class="all_title" id="enpatent33" >著录项</h2> <ul> <li> <span class="lefttit">来源</span> <div style="width: 86%;vertical-align: text-top;display: inline-block;"> <a href='/journal-foreign-28901/'>《Particle & Particle Systems Characterization: Measurement and Description of Particle Properties and Behavior in Powders and Other Disperse Systems》</a> <b style="margin: 0 2px;">|</b><span>2020年第6期</span><b style="margin: 0 2px;">|</b><span>共10页</span> </div> </li> <li> <div class="author"> <span class="lefttit">作者</span> <p id="fAuthorthree" class="threelineshidden zhankaihshouqi"> </p> <span class="z_kbtnclass z_kbtnclassall hoverxs" id="zkzz" style="display: none;">展开▼</span> </div> </li> <li> <div style="display: flex;"> <span class="lefttit">作者单位</span> <div style="position: relative;margin-left: 3px;max-width: 639px;"> <div class="threelineshidden zhankaihshouqi" id="fOrgthree"> </div> <span class="z_kbtnclass z_kbtnclassall hoverxs" id="zhdw" style="display: none;">展开▼</span> </div> </div> </li> <li > <span class="lefttit">收录信息</span> <span style="width: 86%;vertical-align: text-top;display: inline-block;"></span> </li> <li> <span class="lefttit">原文格式</span> <span>PDF</span> </li> <li> <span class="lefttit">正文语种</span> <span>eng</span> </li> <li> <span class="lefttit">中图分类</span> <span><a href="https://www.zhangqiaokeyan.com/clc/6960.html" title="特种结构材料">特种结构材料;</a></span> </li> <li class="antistop"> <span class="lefttit">关键词</span> <p style="width: 86%;vertical-align: text-top;"> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=cascade reaction&option=203" rel="nofollow">cascade reaction;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=hollow materials&option=203" rel="nofollow">hollow materials;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=metal–organic frameworks&option=203" rel="nofollow">metal–organic frameworks;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=multifunctional catalysts&option=203" rel="nofollow">multifunctional catalysts;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=multi‐shelled&option=203" rel="nofollow">multi‐shelled;</a> </p> <div class="translation"> 机译：级联反应;中空材料;金属 - 有机框架;多功能催化剂;多壳; </div> </li> </ul> </div> </div> <div class="literature cardcommon"> <div class="similarity "> <h3 class="all_title" id="enpatent66">相似文献</h3> <div class="similaritytab clearfix"> <ul> <li class="active" >外文文献</li> <li >中文文献</li> <li >专利</li> </ul> </div> <div class="similarity_details"> <ul > <li> <div> <b>1. </b><a class="enjiyixqcontent" href="/journal-foreign-detail/0704024384930.html">A Shell‐by‐Shell Approach for Synthesis of Mesoporous Multi‐Shelled Hollow MOFs for Catalytic Applications</a> <b>[J]</b> . <span> <a 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href="/patent-detail/06130445001724.html">Process for making mesoporous silicate nanoparticle coatings and hollow mesoporous silica nano-shells</a> <b>[P]</b> . <span> 外国专利：  US2003157330A1 </span> <span> . 2003-08-21</span> </div> <p class="zwjiyix translation" style="max-width: initial;height: auto;word-break: break-all;white-space: initial;text-overflow: initial;overflow: initial;"> <span>机译：制备介孔硅酸盐纳米颗粒涂料和中空介孔二氧化硅纳米壳的方法 </span> </p> </li> <li> <div> <b>5. </b><a class="enjiyixqcontent" href="/patent-detail/06130419144889.html">Pot, particularly plant pot, has inner shell, outer shell and hollow space between inner shell and outer shell, where hole opens in hollow space, and water-bearing element is provided with multiple particles</a> <b>[P]</b> . <span> 外国专利：  DE102012101266A1 </span> <span> . 2013-08-22</span> </div> <p class="zwjiyix translation" style="max-width: initial;height: auto;word-break: break-all;white-space: initial;text-overflow: initial;overflow: initial;"> 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