Combined LCA and Green Metrics Approach for the Sustainability Assessment of an Organic Dye Synthesis on Lab Scale

Frontiers in Chemistry

Simone Maranghi¹  Alessandro Mordini²  Sanaz Mohammadpourasl²  Massimo Calamante²  Riccardo Basosi³  Adalgisa Sinicropi³  Gianna Reginato³  Maria Laura Parisi³  Alessio Dessì³  Lorenzo Zani³ 

[1] Center for Colloid and Surface Science-CSGI, Florence, Italy;Department of Chemistry “U. Schiff”, University of Florence, Sesto Fiorentino, Italy;National Research Council, Institute for the Chemistry of OrganoMetallic Compounds (CNR-ICCOM), Florence, Italy;R2ES Lab, Department of Biotechnology, Chemistry and Pharmacy, University of Siena, Siena, Italy;

关键词: life cycle assessment;    green metrics;    sustainability assessment;    organic dyes;    solar cells;    lab scale;   

DOI  :  10.3389/fchem.2020.00214

来源: DOAJ

【 摘 要 】

New generation photovoltaic devices have attracted much attention in the last decades since they can be efficiently manufactured employing abundant raw materials and with less-energy intensive processes. In this context, the use of powerful environmental assessment is pivotal to support the fine-tuning of solar cells fabrication and hit the target of manufacturing effective sustainable technological devices. In this work, a mass-based green metrics and life cycle assessment combined approach is applied to analyze the environmental performances of an innovative synthetic protocol for the preparation of organic dye TTZ5, which has been successfully proposed as sensitizer for manufacturing dye sensitized solar cells. The new synthetic strategy, which is based on the C-H activation process, has been compared with the previously reported synthesis employing classic Suzuki-Miyaura cross-coupling chemistry. Results highlight the contribution of direct energy consumption and purification operations in organic syntheses at lab scale. Furthermore, they demonstrate the usefulness of the environmental multifaceted analytic tool and the power of life cycle assessment to overcome the intrinsic less comprehensive nature of green metrics for the evaluation of organic synthetic protocols.

【 授权许可】

Unknown