A framework for identifying performance targets for sustainable nanomaterials

An issue in the application of nano-enabled products is how can we evaluate sustainable solutions to current system problems based on performance criteria? This work describes the application of an Input–Process–Output (IPO) model as a framework for a life-cycle analysis approach to identify performance metrics and criteria for evaluating the application of nanomaterials to improve the sustainability of a system. A case study is presented describing a scenario whereby a nano-enabled biocidal paint is considered for a remediation effort to reduce growth of dark molds and bacteria on refrigerated warehouses. The framework is applied to support identification of the energy-consuming steps (such as increased refrigeration energy burden, cleaning and repainting), selection of performance metrics for evaluating consumption, and determination of thresholds to measure sustainability outcomes.