Very recently, Prof. Dr. K. Faungnawakij and his research group have summarized a mini review report on an emerging renewable technique of Photobiorefinery . This is one of the beyond technique of Artificial Photosynthesis (AP) [1] . Despite great promises, AP technologies for solar H2 production and CO2 reduction are far uncompetitive to other promising technologies at the current stage . However, despite an enormous effort, time, and budget paid on AP-related researches throughout several decades, AP technologies have struggled to strive beyond laboratory demonstration except a very few exceptions [2] . This bitter reality makes the translation of this excellent science to practical application questionable [3] . Technoeconomic analysis shows that without achieving the aggressive technology targets, this technology will not be commercially viable. This has directed the research community towards the development of highly efficient yet expensive devices. While tremendous p

Increasing human consumption of fossil fuels continues to contribute to adversely high levels of atmospheric CO2 and a changing climate on the planet. Photosynthesis offers a blueprint to mitigating this global problem by converting intermittent light energy into electrical current for converting CO2 and H2O into sugars for sustainable energy storage. Artificial photosynthesis (AP), which aims to mimic natural photosynthesis (NP) that utilizes sunlight, water, and carbon dioxide to produce storable/transportable fuels or desired chemicals, has been the ultimate goal of scientists for many years, due to its great potential to solve both global energy and environmental crises simultaneously [1] . Both NP and AP follow the same physical chemistry steps including 1) light absorption, 2) charge separation, 3) water splitting, and 4) chemical synthesis, although electron accepters and charge transfer processes are different in details [2] . More than 5,000 publications related to artif