| Title: | Harnessing Waste Heat from Indoor lamps for Sustainable Thermocatalytic Mineralization of Acetaldehyde using Platinized TiO(2) |
| Author(s): | Lee M; Yim H; Kim B; Kim S; Choi W; Kim W; Kim HI; |
| Address: | "Department of Civil & Environmental Engineering, Yonsei University, Seoul, 03722, Republic of Korea. Department of Civil & Environmental Engineering, Yonsei University, Seoul, 03722, Republic of Korea; Zachry Department of Civil and Environmental Engineering, Texas A&M University, College Station, TX, 77843-3136, USA. Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, 37673, Republic of Korea. KENTECH Institute for Environmental and Climate Technology, Korea Institute of Energy Technology (KENTECH), Naju, 58330, Republic of Korea. KENTECH Institute for Environmental and Climate Technology, Korea Institute of Energy Technology (KENTECH), Naju, 58330, Republic of Korea. Electronic address: wkim@kentech.ac.kr. Department of Civil & Environmental Engineering, Yonsei University, Seoul, 03722, Republic of Korea. Electronic address: hi.kim@yonsei.ac.kr" |
| DOI: | 10.1016/j.chemosphere.2022.136350 |
| ISSN/ISBN: | 1879-1298 (Electronic) 0045-6535 (Linking) |
| Abstract: | "This study demonstrates the first reported thermocatalytic oxidation of an indoor volatile organic compound (VOC), acetaldehyde, by harnessing the waste-heat energy from indoor light sources (e.g., halogen lamps) without additional energy inputs. With an optimal Pt-TiO(2) catalyst, the designed catalyst-coated lampshade was successfully activated under waste-heat energy ( approximately 120 degrees C) and achieved the complete mineralization of CH(3)CHO into CO(2) (k = 0.02 min(-1)). The catalytic activity of Pt-TiO(2) was extremely dependent on its preparation method which greatly influenced the characteristics (e.g., oxidation state and size) of Pt. The thermocatalytic oxidation mechanism of CH(3)CHO over Pt-TiO(2) was investigated, which revealed that O(2) and H(2)O sources play vital roles. Although Pt is an expensive noble metal, the thermocatalytic process on the Pt-TiO(2)-coated lampshade without additional energy, along with its outstanding activity, can offset the high material cost. The proposed strategy offers a sustainable and feasible method for the degradation of indoor VOCs" |
| Keywords: | *Acetaldehyde Carbon Dioxide Catalysis Halogens Hot Temperature Titanium *Volatile Organic Compounds Acetaldehyde Low-temperature catalyst Mineralization Thermocatalytic oxidation Waste-heat energy; |
| Notes: | "MedlineLee, Minhyung Yim, Heewon Kim, Bupmo Kim, Suho Choi, Wonyong Kim, Wooyul Kim, Hyoung-Il eng England 2022/09/13 Chemosphere. 2022 Dec; 308(Pt 2):136350. doi: 10.1016/j.chemosphere.2022.136350. Epub 2022 Sep 9" |
