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In the present work, we report the synthesis of pristine and Ce-doped CuO hollow nanostructures, which have much higher VOC sensing and response characteristics than their solid analogues. Undoped CuO hollow nanostructures exhibit high response for sensing of acetone as compared to commercial CuO nanoparticles. As a result of doping with cerium, the material starts showing selectivity. CuO hollow structures doped with 5 at. % of Ce return highest response toward methanol sensing, whereas increasing the Ce doping concentration to 10%, the material shows high response for both\u2500acetone and methanol. The observed tunability in selectivity is directly linked to the varying concentration of the oxygen defects on the surface of the nanostructures. The work also shows that the use of hollow nanostructures could be the way forward for obtaining high-performance sensors even by using conventional and simple metal or semiconductor oxides.<\/jats:p>","DOI":"10.1021\/acsomega.8b00203","type":"journal-article","created":{"date-parts":[[2018,5,9]],"date-time":"2018-05-09T10:19:25Z","timestamp":1525861165000},"page":"5029-5037","source":"Crossref","is-referenced-by-count":42,"title":["Cerium-Doped Copper(II) Oxide Hollow Nanostructures\nas Efficient and Tunable Sensors for Volatile Organic Compounds"],"prefix":"10.1021","volume":"3","author":[{"given":"Inderjeet","family":"Singh","sequence":"first","affiliation":[{"name":"Indian Institute of Technology , , , ,","place":["Kharagpur, West Bengal, India, 721302"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sayan","family":"Dey","sequence":"additional","affiliation":[{"name":"Indian Institute of Technology , , , ,","place":["Kharagpur, West Bengal, India, 721302"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sumita","family":"Santra","sequence":"additional","affiliation":[{"name":"Indian Institute of Technology , , , ,","place":["Kharagpur, West Bengal, India, 721302"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9591-4638","authenticated-orcid":true,"given":"Katharina","family":"Landfester","sequence":"additional","affiliation":[{"name":"Max Planck Institute for Polymer Research , , Ackermannweg 10 , ,","place":["Mainz, Germany, 55128"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8146-2332","authenticated-orcid":true,"given":"Rafael","family":"Mun\u0303oz-Espi\u0301","sequence":"additional","affiliation":[{"name":"Max Planck Institute for Polymer Research , , Ackermannweg 10 , ,","place":["Mainz, Germany, 55128"]},{"name":"Institute of Materials Science (ICMUV), University of Valencia , C\/Catedra\u0300tic Jose\u0301 Beltra\u0301n 2 , ,","place":["Paterna, Spain, 46980"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8247-7926","authenticated-orcid":true,"given":"Amreesh","family":"Chandra","sequence":"additional","affiliation":[{"name":"Indian Institute of Technology , , , ,","place":["Kharagpur, West Bengal, India, 721302"]}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"316","published-online":{"date-parts":[[2018,5,9]]},"reference":[{"key":"2026090208004794500_cit1","doi-asserted-by":"publisher","first-page":"267","DOI":"10.1002\/ange.200502823","article-title":"Template-Free Synthesis and Assembly of Single-Crystalline\nTungsten Oxide Nanowires and their Gas-Sensing Properties","volume":"118","author":"Polleux","year":"2006","journal-title":"Angew. 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