Light-driven transformation of biomass into chemicals using photocatalysts-Vistas and challenges

JOURNAL OF ENVIRONMENTAL MANAGEMENT

卷:284

Article

Rao, Vempuluru Navakoteswara¹  Malu, Thayil Jayakumari²  Cheralathan, Kanakkampalayam Krishnan²  Sakar, Mohan³  Pitchaimuthu, Sudhagar⁴  Rodriguez-Gonzalez, Vicente⁵  Kumari, Murikinati Mamatha¹  Shankar, Muthukonda Venkatakrishnan¹ 

[1] Yogi Vemana Univ, Dept Mat Sci & Nanotechnol, Nano Catalysis & Solar Fuels Res Lab, Kadapa 516005, Andhra Pradesh, India

[2] Vellore Inst Technol VIT, Sch Adv Sci, Dept Chem, Vellore 632014, Tamil Nadu, India

[3] Jain Univ, Ctr Nano & Mat Sci, Bangalore 562112, Karnataka, India

[4] Swansea Univ, Coll Engn, Mat Res Ctr, Multifunct Photocatalyst & Coatings Grp,SPECIFIC, Bay Campus,Fabian Way, Swansea SA1 8EN, W Glam, Wales

[5] Inst Potosino Invest Cient & Tecnol, Div Mat Avanzados, Camino La Presa San Jos 2055,Lomas 4a, San Luis Potosi 78216, Slp, Mexico

关键词: Photocatalysis;    Biomass;    Added-value chemicals;    Cellulose;    Lignin;    Sugars;    Alcohols;    Photobiorefinery;   

DOI  :  10.1016/j.jenvman.2021.111983

来源: Elsevier

【 摘 要 】

Lignocellulosic biomass has become an important sustainable resource for fuels, chemicals and energy. It is an attractive source for alternative fuels and green chemicals because it is non-edible and widely available in the planet in huge volumes. The use of biomass as starting material to produce fuels and chemicals leads to closed carbon cycle and promotes circular economy. Although there are many thermo-chemical methods such as pyrolysis, liquefaction and gasification close at hand for processing lignocellulosic biomass and transforming the derived compounds into valuable chemicals and fuels, the photocatalytic method is more advantageous as it utilizes light and ambient conditions for reforming the said compounds. Appraisal of recent literature indicates a variety of photocatalytic systems involving different catalysts, reactors and conditions studied for this purpose. This article reviews the recent developments on the photocatalytic oxidation of biomass and its derivatives into value-added chemicals. The nature of the biomass and derived molecules, nature of the photocatalysts, efficiency of the photocatalysts in terms of conversion and selectivity, influence of reaction conditions and light sources, effect of additives and mechanistic pathways are discussed. Importance has been given also to discuss the complementary technologies that could be coupled with photocatalysis for better conversion of biomass and biomass-derived molecules to value-added chemicals. A summary of these aspects, conclusions and future prospects are given in the end.

【 授权许可】

Free