Epitaxial growth of TiO2 nanoparticles on Ti3C2 MXene for dye-sensitized photoconversion of CO2 into CH4

Epitaxial growth of TiO2 nanoparticles on Ti3C2 MXene for dye-sensitized photoconversion of CO2 into CH4 | Authorea try { document.documentElement.classList.add('js'); } catch (e) { } var _gaq = _gaq || []; _gaq.push(['_setAccount', 'G-8VDV14Y67G']); _gaq.push(['_trackPageview']); (function() { var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true; ga.src = ('https:' == document.location.protocol ? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js'; var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s); })(); Skip to main content Preprints Collections Wiley Open Research IET Open Research Ecological Society of Japan All Collections About About Authorea FAQs Contact Us Quick Search anywhere Search for preprint articles, keywords, etc. Search Search ADVANCED SEARCH SCROLL This is a preprint and has not been peer reviewed. Data may be preliminary. 11 November 2025 V1 Latest version Share on Epitaxial growth of TiO2 nanoparticles on Ti3C2 MXene for dye-sensitized photoconversion of CO2 into CH4 Authors : Xiangfeiyi Yu , Zhihua Liu , Lingang Yang , Qian Li , Feifei Tao 0000-0003-4243-8759 [email protected] , Shengdan Tao , and Pingan Zhang Authors Info & Affiliations https://doi.org/10.22541/au.176289061.16245523/v1 140 views 99 downloads Contents Abstract Supplementary Material Information & Authors Metrics & Citations View Options References Figures Tables Media Share Abstract Photocatalytic CO2 conversion has been deemed as a green and sustainable strategy to alleviate energy crisis and mitigate greenhouse effect. Efficient and high selective CO2 photoconversion into CH4 still remains a challenge. In this work, the epitaxial growth of TiO2 nanoparticles on Ti3C2 MXene was synchronously coupled with the modification of methylene blue (MB) to successfully fabricate the TiO2/Ti3C2/MB (TTM) composites via one-step ultrasonic method. The resulting TTM composites display the accordion-like layered structure embellished with nanoparticles with a large surface area and narrow band gap. Excitingly, the optimized TTM achieves a prominent near 100% CO2-to-CH4 photoconversion with a yield rate of 54.34 μmol·g-1·h-1, surpassing accordion-like TiO2 (AT) by 12.9 folds. As revealed by characterizations, MB behaves as photosensitizer to transfer more excited electrons to TiO2 and Ti3C2 through the tightly packed multi-component interfaces. Ti3C2 MXene serves as active sites to strongly capture CO2 molecules and stabilize reaction intermediates for the highly selective CH4 generation. And the multiple charge transfer pathways are established to greatly separate and transfer photo-induced charge carriers. This work highlights the feasible design of TiO2-based photocatalysts, which not only achieves the effective removal of MB pollutant but also effectuates highly selective CO2-to-CH4 conversion. Supplementary Material File (figure.docx) Download 3.26 MB File (main document.doc) Download 289.50 KB Information & Authors Information Version history V1 Version 1 11 November 2025 Copyright This work is licensed under a Non Exclusive No Reuse License. Keywords methylene blue photocatalytic co2 reduction photosensitization effect selective ch4 generation ti3c2 mxene Authors Affiliations Xiangfeiyi Yu Shaoxing University View all articles by this author Zhihua Liu Shaoxing University View all articles by this author Lingang Yang Shaoxing University View all articles by this author Qian Li Shaoxing University View all articles by this author Feifei Tao 0000-0003-4243-8759 [email protected] Shaoxing University View all articles by this author Shengdan Tao Shaoxing University View all articles by this author Pingan Zhang Shaoxing University View all articles by this author Metrics & Citations Metrics Article Usage 140 views 99 downloads .FvxKWukQNSOunydq8rnd { width: 100px; } Citations Download citation Xiangfeiyi Yu, Zhihua Liu, Lingang Yang, et al. Epitaxial growth of TiO2 nanoparticles on Ti3C2 MXene for dye-sensitized photoconversion of CO2 into CH4. Authorea . 11 November 2025. DOI: https://doi.org/10.22541/au.176289061.16245523/v1 If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download. For more information or tips please see 'Downloading to a citation manager' in the Help menu . Format Please select one from the list RIS (ProCite, Reference Manager) EndNote BibTex Medlars RefWorks Direct import Tips for downloading citations document.getElementById('citMgrHelpLink').addEventListener('click', function() { popupHelp(this.href); return false; }); $(".js__slcInclude").on("change", function(e){ if ($(this).val() == 'refworks') $('#direct').prop("checked", false); $('#direct').prop("disabled", ($(this).val() == 'refworks')); }); View Options View options PDF View PDF Figures Tables Media Share Share Share article link Copy Link Copied! Copying failed. 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