Advanced nanonetwork-structured carbon materials for high-performance formaldehyde capture
Advanced nanonetwork-structured carbon materials for high-performance formaldehyde capture
复制标题
用于高性能甲醛捕获的先进纳米网络结构碳材料
DOI：
10.1016/j.jcis.2018.11.047
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发表时间：
2019
影响因子：
9.9
通讯作者：
Liang Yeru
中科院分区：
文献类型：
--
作者：
Zhang Weicai;Chen Lidong;Xu Linhe;Dong Hanwu;Hu Hang;Xiao Yong;Zheng Mingtao;Liu Yingliang;Liang Yeru
简便易行的设计和施工的先进材料，以消除室内甲醛污染仍然是一个巨大的挑战，但非常希望为人类生活提供清洁的空气。在这里，我们报道了一种高性能的甲醛吸附剂，即一种新型的以中空纳米球为网络单元的纳米网络结构碳(NNSC)，通过开发一种简便、高效和无需后处理的策略。以天然麦壳为碳源，特氟隆为生物模板原位脱除剂，通过简单的碳化反应即可制得NNSCs。所构建的NNSC具有独特的三维互连的微孔、介孔和大孔纳米网络。得益于这种有价值的中空纳米球互联网络结构，NNSCs显示出惊人的甲醛气体吸附性能，包括超高的存储容量、超快的吸附速率和高效的吸附活性表面。值得注意的是，它们的比吸附容量和最大吸附速率分别高达120.3 mg g−1M−3和44 6 mg g−1M−3h−1，分别是商用吸附甲醛的活性碳的18倍和41倍。这项工作突出了通过简单合理地构建新型多孔结构来开发高性能甲醛吸附剂的有效解决方案，同时为获得高价值的先进材料提供了一条新的途径，以应对挑战环境的问题。
Facile design and construction of advanced materials for eliminating the indoor formaldehyde pollution is still a great challenge but very desirable to provide clean air for human life. Herein, we report a high-performance formaldehyde adsorbent,i.e., a new type of nanonetwork-structured carbon (NNSC) with a hollow nanosphere as network unit by developing a facile, efficient and post-treatment-free strategy. The NNSCs can be easily obtained by a simple carbonization of a mixture, in which natural wheat husk and Teflon are used as carbon precursor and biotemplate-in-situ-remover, respectively. The as-constructed NNSC exhibits a unique three-dimensional interconnected micro-, meso- and macroporous nanonetwork. Benefiting from such a valuable hollow nanosphere-interconnected network structure, the NNSCs show surprising formaldehyde gas adsorption properties including super-high storage capacity, ultrafast adsorption rate and efficient adsorptively active surface. Remarkably, their specific adsorption capacity and maximum adsorption rate are as high as 120.3 mg g−1m−3and 44.6 mg g−1m−3h−1, which make 18-fold and 41-fold enhancement when compared to activated carbon commercially used for formaldehyde adsorption, respectively. This work highlights an efficient solution to develop high-performance formaldehyde adsorbents by facile and rational construction of novel porous structure, simultaneously to provide a new avenue to high-value advanced materials for challenging environmental issue.