Rosa Roberto, Paradisi Enrico, Lassinantti Gualtieri Magdalena, Mugoni Consuelo, Cappucci Grazia Maria, Ruini Chiara, Neri Paolo, Ferrari Anna Maria
Department of Sciences and Methods for Engineering, University of Modena and Reggio Emilia, via G. Amendola 2, 42122, Reggio Emilia, Italy.
Department of Engineering "Enzo Ferrari", University of Modena and Reggio Emilia, via P. Vivarelli 10, 41125, Modena, Italy.
ChemSusChem. 2023 Apr 21;16(8):e202202196. doi: 10.1002/cssc.202202196. Epub 2023 Feb 27.
This paper represents the first attempt to quantitatively and reliably assess the environmental sustainability of solution combustion synthesis (SCS) with respect to other soft chemistry strategies, which are more conventionally employed in the preparation of engineered oxide nanomaterials, namely hydrolytic and non-hydrolytic sol-gel syntheses (i. e., HSGS and NHSGS). Indeed, although SCS is well known to rely on significant reduction in the energy as well as time required for the obtainment of the desired nanocrystals, its quantitative environmental assessment and a detailed comparison with other existing synthetic pathways represents an absolute novelty of high scientific desirability in order to pursue a more sustainable development in the inorganic chemistry as well as materials science research fields. TiO nanoparticles were selected as the material of choice, for the production of which three slightly modified literature procedures were experimentally reproduced and environmentally evaluated by the application of the comprehensive life cycle assessment (LCA) methodology. Particularly, SCS was compared from an environmental perspective with sol-gel approaches performed both in water and in benzyl alcohol. The results of the present study were also framed among those recently obtained in a systematic study assessing seven further chemical, physical, and biological routes for the synthesis of TiO nanoparticles, comprising also flame spray pyrolysis (typically used in industrial productions), highlighting and quantifying the excellent environmental performances of SCS.
本文首次尝试定量且可靠地评估溶液燃烧合成（SCS）相对于其他软化学策略的环境可持续性，这些软化学策略在工程氧化物纳米材料制备中更常被使用，即水解和非水解溶胶 - 凝胶合成（即HSGS和NHSGS）。实际上，尽管众所周知SCS在获得所需纳米晶体所需的能量和时间方面有显著减少，但其定量环境评估以及与其他现有合成途径的详细比较代表了一种绝对新颖且具有高度科学价值的内容，以便在无机化学以及材料科学研究领域追求更可持续的发展。选择TiO纳米颗粒作为研究对象，通过应用综合生命周期评估（LCA）方法，对生产该纳米颗粒的三种略有修改的文献方法进行了实验重现和环境评估。特别是，从环境角度将SCS与在水和苯甲醇中进行的溶胶 - 凝胶方法进行了比较。本研究结果也被纳入最近在一项系统研究中获得的结果之中，该系统研究评估了另外七种合成TiO纳米颗粒的化学、物理和生物途径，其中还包括火焰喷雾热解（通常用于工业生产），突出并量化了SCS优异的环境性能。
