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聚苯胺/TiO纳米复合材料实现高效日夜氮氧化物减排

Efficient Day-and-Night NO Abatement by Polyaniline/TiO Nanocomposites.

作者信息

Meroni Daniela, Galloni Melissa G, Cionti Carolina, Cerrato Giuseppina, Falletta Ermelinda, Bianchi Claudia L

机构信息

Dipartimento di Chimica, Università degli Studi di Milano, via Camillo Golgi 19, 20133 Milano, Italy.

Consorzio Interuniversitario Nazionale per la Scienza e Tecnologia dei Materiali (INSTM), via Giusti 9, 50121 Florence, Italy.

出版信息

Materials (Basel). 2023 Feb 3;16(3):1304. doi: 10.3390/ma16031304.

DOI:10.3390/ma16031304
PMID:36770310
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9920043/
Abstract

Finding innovative and highly performing approaches for NOx degradation represents a key challenge to enhance the air quality of our environment. In this study, the high efficiency of PANI/TiO nanostructures in the NO abatement both in the dark and under light irradiation is demonstrated for the first time. Heterostructures were synthesized by a "green" method and their composition, structure, morphology and oxidation state were investigated by a combination of characterization techniques. The results show that the unique PANI structure promotes two mechanisms for the NO abatement in the dark (adsorption on the polymeric chains and chemical reduction to NO), whereas the photocatalytic behavior prevails under light irradiation, leading to the complete NOx degradation. The best-performing materials were subjected to recycling tests, thereby showing high stability without any significant activity loss. Overall, the presented material can represent an innovative and efficient night-and-day solution for NOx abatement.

摘要

寻找创新且高效的氮氧化物降解方法是改善我们环境空气质量的一项关键挑战。在本研究中，首次证明了聚苯胺/二氧化钛纳米结构在黑暗和光照条件下对氮氧化物减排的高效性。通过一种“绿色”方法合成了异质结构，并结合多种表征技术对其组成、结构、形态和氧化态进行了研究。结果表明，独特的聚苯胺结构促进了黑暗中氮氧化物减排的两种机制（在聚合物链上吸附和化学还原为一氧化氮），而在光照下光催化行为占主导，导致氮氧化物完全降解。对性能最佳的材料进行了循环测试，结果显示其具有高稳定性且无任何显著的活性损失。总体而言，所展示的材料可为氮氧化物减排提供一种创新且高效的昼夜解决方案。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e87f/9920043/9a5fdedbcd71/materials-16-01304-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e87f/9920043/cba6fd018114/materials-16-01304-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e87f/9920043/7689bf8971e1/materials-16-01304-g002.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e87f/9920043/d6bff0843013/materials-16-01304-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e87f/9920043/5fe4286c702c/materials-16-01304-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e87f/9920043/e4600f157cb0/materials-16-01304-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e87f/9920043/bcdc450f464a/materials-16-01304-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e87f/9920043/42053be0f01e/materials-16-01304-sch001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e87f/9920043/999fb945a573/materials-16-01304-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e87f/9920043/9a5fdedbcd71/materials-16-01304-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e87f/9920043/cba6fd018114/materials-16-01304-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e87f/9920043/7689bf8971e1/materials-16-01304-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e87f/9920043/c8ed8d6822c6/materials-16-01304-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e87f/9920043/d6bff0843013/materials-16-01304-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e87f/9920043/5fe4286c702c/materials-16-01304-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e87f/9920043/e4600f157cb0/materials-16-01304-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e87f/9920043/bcdc450f464a/materials-16-01304-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e87f/9920043/42053be0f01e/materials-16-01304-sch001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e87f/9920043/999fb945a573/materials-16-01304-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e87f/9920043/9a5fdedbcd71/materials-16-01304-g009.jpg

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