An increasingly level of one of the important greenhouse gas, CO₂, in the atmosphere from anthropogenic human activities has several adverse consequences and thus, chemical transformation of carbon dioxide into useful, renewable and environmentally friendly products is becoming an important research problem. In the present investigation, we have developed photocatalyst of graphene oxide modified with cobalt metallated aminoporphyrin (GO-Co-ATPP) for conversion of CO₂ to formic acid under visible light. The efficiency of nanohybrid photosynthetic conversion of formic acid from carbon-dioxide is 96.49 μmol for 2 h. We have used XRD, SEM, HR-TEM, AFM, thermogravimetric analysis, BET measurement to establish the structural and physical properties along with infrared spectroscopy and Raman spectroscopy for chemical properties of GO-Co-ATPP. The photocatalyst was significantly effective for NADH photoregeneration with cumulative 48.53% over time and photoelectrochemical measurement showed photocurrent properties. These results strongly suggest that the GO-Co-ATPP photocatalyst materials may open new vistas in conversion of CO₂ into useful and environmentally friendly products as well as energy applications.

人为活动引起的大气中重要温室气体之一的CO ₂含量的增加具有若干不利后果，因此，将二氧化碳化学转化为有用的，可再生的和环境友好的产品正成为一个重要的研究问题。在本研究中，我们开发了用钴金属化氨基卟啉（GO-Co-ATPP）改性的氧化石墨烯的光催化剂，用于转化CO ₂在可见光下生成甲酸。二氧化碳从纳米碳到纳米光合作用的光合转化效率为96.49μmol，持续2 h。我们已经使用XRD，SEM，HR-TEM，AFM，热重分析，BET测量来建立结构和物理性质，并结合红外光谱和拉曼光谱来确定GO-Co-ATPP的化学性质。该光催化剂对于NADH光再生具有显着的效果，随着时间的推移累积达到48.53％，并且光电化学测量显示出光电流特性。这些结果强烈表明，GO-Co-ATPP光催化剂材料可能在将CO ₂转化为有用且环保的产品以及能源应用方面开辟新的前景。