The excessive use of fossil fuels to carry out industrial activities by humans has led to the excessive emission of CO2 in the atmosphere. According to the latest reports, the concentration of carbon dioxide has exceeded 400 ppm. A concentration of 400 ppm means that for every one million particles of air, there are 400 particles of carbon dioxide molecules (0.04%). This extremely high concentration of CO2 has led to global warming and many negative consequences for the Earth's climate system, but despite the harm and dangers caused by carbon dioxide, this gas can be a useful source of carbon for the synthesis of valuable chemicals and fuels. Therefore, a team of researchers recently selected a highly efficient and stable copper-based catalyst (DFNS/TiO2-Cu) to convert CO2 to CO. In addition to providing researchers with information on the regulation of strong metal interactions, this study shows that this catalyst can remain stable for more than 200 hours. There are many reports of noble metal catalysts, but their application is limited due to the moderate catalytic performance and high cost of these metals. In the family of non-noble metal catalysts, copper-based catalysts are among the most widely used catalysts that have a good capacity to perform industrial processes, but unfortunately, the low Tamman temperature of copper limits its activity and long-term stability. As a result of the research, scientists introduced a catalyst with active copper sites on titanium oxide-coated Nano fibrous silica (DFNS/TiO2-Cu) to convert CO2 to CO.