Perspectives on nanoparticle engineered enzyme immobilization with evolving challenges innovative solutions and sustainable prospects

Abstract

Nanoparticle-engineered platforms are transforming enzyme immobilization by providing high surface area, tunable porosity, and controllable surface chemistry, which together improve enzyme orientation, stability, and catalytic performance. These advances address key industrial barriers—enzyme instability, limited reuse, and difficult recovery—while enabling greener and more efficient biocatalytic processes.This review synthesizes recent developments in nanoparticle-based enzyme immobilization, covering diverse nanostructures such as covalent organic frameworks (COFs), hybrid nanoflowers, nanofibers, graphene oxide (GO) and other carbon-based supports, metallic and polymeric nanoparticles (NPs), layered double hydroxides (LDHs), and carrier-free approaches such as cross-linked enzyme aggregates (CLEAs). Engineering strategies including covalent attachment, adsorption, entrapment, and co-aggregation are discussed, along with smart and stimuli-responsive supports for on-demand activation and emerging fabrication methods such as three-dimensional (3D) printing for tailored scaffolds. The role of computational design and artificial intelligence (AI) in optimizing immobilization conditions, predicting enzyme–material compatibility, and guiding scale-up is highlighted. Applications spanning industrial biocatalysis, biosensing, environmental remediation, wearable diagnostics, and space bioprocessing are examined. Key challenges include process scale-up, nanomaterial toxicity and environmental persistence, reproducibility, and techno-economic limitations. Sustainability considerations and mitigation strategies—such as surface functionalization, biodegradability, and circular-economy integration—are also evaluated.Rather than merely summarizing existing nanomaterials, this review provides a critical and integrative perspective that links nanoparticle design with enzyme functionality and real-world applicability, offering actionable insights for next-generation biocatalyst development.