Speaker: Prof. Siddharth Patwardhan
Green Nanomaterials Research Group, Department of
Chemical and Biological Engineering,
University of Sheffield, U.K.
Title: "An integrated approach for taking green
nanomaterials from discovery to market."
Day and Date: Monday, 06 January, 2025.
Time: 3.30 PM.
Venue: Room no. 350, Chemistry Department
Second floor, Annex
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Hosted by Prof. Arnab Dutta
Abstract Despite an explosion in nanomaterials discovery, with many potential applications, very few have
been commercialised. Barriers lie with scalability, economics and sustainability. Indeed, a raft of
‘highly promising’ higher value nanomaterials have so far failed to meet their promise, or indeed to
escape the laboratory. Hence commercial manufacturing of sustainable and scalable high-value
nanomaterials remains elusive. Addressing these barriers requires new systems-based and
integrative mind-set. It enables parallel and responsive progression of multiple and dependent
research strands, according to need, opportunities, and emergent knowledge. This approach sits at
odds with the traditional linear view, which focuses initially on the discovery of specific material
leads at the laboratory scale, leaving scale-up and commercialisation to be considered as distinctly
separate and disconnected concerns.
Our integrated approach considers aspects ranging
from materials discovery to applications and
manufacturing as shown in the schematic. With the
example of bioinspired “green” nanosilica product
system, this presentation will illustrate how an
integrated approach was implemented and how it
helped overcome multiple technological
challenges.
• We will discuss a novel sequential DoE strategy complemented by a variance-based Global
Sensitivity Analysis used for materials discovery and resource-efficient process
development.4
• The molecular-scale understanding of the materials synthesis was developed by probing
the self-assembly and kinetics underpinning their formation.
• Simultaneously, we focussed on investigating the mixing mechanisms controlling the
synthesis in order to develop a scale-up methodology. From this work, mixing time and
conditions were correlated with both the fluidic conditions and the reaction products.
• Coupled with this, the economic feasibility and sustainability of the process at industrial
scale was estimated, providing key insights into scale-up and commercialisation.
Given the “circular” nature of this approach, we will show how key outputs from research in one
discipline has provided valuable inputs for others, which have in turn helped enrich the discovery
to market journey.