文献类型：期刊文献

英文题名：Oxidation behavior of TiC and TiCN and their potential photocatalytic activity in a semi-oxidized state

作者：Tang, Shiyun Song, Guoqiang Guo, Junjiang Li, Claudia Lim, Kang Hui Diao, Pinli Chen, Wenting Hu, Feiyang Sunarso, Jaka Tang, Hao Kawi, Sibudjing

第一作者：唐石云

通信作者：Song, GQ[1];Tang, H[1];Kawi, S[2]

机构：[1]Guizhou Inst Technol, Sch Chem Engn, Guiyang 550003, Peoples R China;[2]Yuzhang Normal Univ, Inst Carbon Neutral New Energy Res, Nanchang 330103, Peoples R China;[3]Natl Univ Singapore, Dept Chem & Biomol Engn, 4 Engn Dr 4, Singapore 117585, Singapore;[4]Jiangxi Agr Univ, Coll Chem & Mat, 1101 Zhimin Ave, Nanchang 330045, Peoples R China;[5]Swinburne Univ Technol, Fac Engn Comp & Sci, Res Ctr Sustainable Technol, Jalan Simpang Tiga, Kuching 93350, Sarawak, Malaysia

第一机构：贵州理工学院化学工程学院

通信机构：corresponding author), Yuzhang Normal Univ, Inst Carbon Neutral New Energy Res, Nanchang 330103, Peoples R China;corresponding author), Natl Univ Singapore, Dept Chem & Biomol Engn, 4 Engn Dr 4, Singapore 117585, Singapore.

年份：2025

外文期刊名：NANOSCALE ADVANCES

收录：;EI(收录号：20252818776318);Scopus(收录号：2-s2.0-105010304654);WOS:【SCI-EXPANDED(收录号:WOS:001525132800001)】；

基金：The research was supported by the Science and Technology Planning Project of Guizhou Province (Qiankehezhicheng [2021] Yiban 493 and Qiankehejichu-ZK [2023] Yiban 129), the National Natural Science Foundation of China (22062003), GIT Academic Seedling Training and Innovation Exploration Project (GZLGXM-19), the National Research Foundation, Singapore, A*STAR under its Low-Carbon Energy Research (LCER) Funding Initiative (FI) Project (U2102d2011, WBS: A-8000278-00-00), and the Singapore Ministry of Education Academic Research Fund (MOE AcRF) Tier 1 Project (WBS: A-0009184-01-00).

语种：英文

外文关键词：Boron compounds - Complexation - Dyes - Iridium compounds - Oxidation - Oxide minerals - Rhodium compounds - Titanium carbide - Titanium nitride

摘要：The oxidation behavior of titanium carbide (TiC) and titanium carbonitride (TiCN) warrants significant attention. This study investigates the oxidation behavior of internally doped TiC and TiCN in ambient air by varying the oxidation temperature and explores their photocatalytic degradation activity. Macroscopic observations, combined with XRD and SEM analyses, reveal a pronounced color change during oxidation, with TiC exhibiting superior oxidation resistance compared to TiCN. TiC and TiCN were oxidized at 800 degrees C and 500 degrees C for 2 h, respectively, achieving substantial oxidation. During the oxidation process, TiC is directly oxidized to TiO2, while in TiCN, C is first replaced by O, followed by N. The final oxidation product for both materials is rutile TiO2. TG-DSC and TPO-IR analyses suggest that the C species in TiC is more complex than that in TiCN, attributed to the presence of C atoms with varying graphitization degrees embedded within the TiC lattice. In assessing photocatalytic degradation activity following semi-oxidization, TiC and TiCN exhibited optimal activity after oxidation for 2 h at approximately 400 degrees C and 500 degrees C, respectively, with residual rates of rhodamine B (RhB) at 3.85% and 9.37% after 240 min of degradation and adsorption. These results indicate that TiCN demonstrates superior adsorption and degradation capacities for RhB compared to oxidized TiC. Furthermore, UV-Vis DRS and XPS detection results confirm the formation of N and/or C inner-doped modified TiO2 in TiC and TiCN following appropriate semi-oxidization.