AUTHOR=Zhu Chonghui , Cheng Xiaoli , Dong Xin , Xu Ying ming TITLE=Enhanced Sub-ppm NH3 Gas Sensing Performance of PANI/TiO2 Nanocomposites at Room Temperature JOURNAL=Frontiers in Chemistry VOLUME=Volume 6 - 2018 YEAR=2018 URL=https://www.frontiersin.org/journals/chemistry/articles/10.3389/fchem.2018.00493 DOI=10.3389/fchem.2018.00493 ISSN=2296-2646