Publications by authors named "P V Ajayan"

Nanoarchitected materials are at the frontier of metamaterial design and have set the benchmark for mechanical performance in several contemporary applications. However, traditional nanoarchitected designs with conventional topologies exhibit poor stress distributions and induce premature nodal failure. Here, using multi-objective Bayesian optimization and two-photon polymerization, optimized carbon nanolattices with an exceptional specific strength of 2.

View Article and Find Full Text PDF

Polymeric membranes with great processability are attractive for the H/CO separation required for hydrogen production from renewable biomass with carbon capture for utilization and sequestration. However, it remains elusive to engineer polymer architectures to obtain desired sub-3.3 Å ultramicropores to efficiently sieve H from CO.

View Article and Find Full Text PDF
Article Synopsis
  • The alkaline oxygen evolution reaction (OER) involves four key reactions and poses challenges in balancing Gibbs free energies of intermediates like HO*, O*, and HOO* at active sites.
  • A new high-entropy metal-organic framework using Fe, Ni, Co, Cu, and Y is developed via electrodeposition, resulting in the FeCoNiCuYP/C composite, which features an amorphous structure with several active sites.
  • This composite shows enhanced OER performance in alkaline solutions, with a low overpotential of 316 mV at 100 mA/cm², attributed to the optimized electronic structure and binding strengths facilitated by Co/Ni and Fe atom interactions.
View Article and Find Full Text PDF

The surging demand for electronics is causing detrimental environmental consequences through massive electronic waste production. Urgently shifting toward renewable and eco-friendly materials is crucial for fostering a green circular economy. Herein, we develop a multifunctional bionanocomposite using an algae-derived carbohydrate biopolymer (alginate) and boron nitride nanosheet (BNNS) that can be readily employed as a multifunctional dielectric material.

View Article and Find Full Text PDF

Halide perovskite nanocrystals (HPNCs) have emerged as promising materials for various light harvesting applications due to their exceptional optical and electronic properties. However, their inherent instability in water and biological fluids has limited their use as photocatalysts in the aqueous phase. In this study, we present highly water-stable SiO-coated HPNCs as efficient photocatalysts for antimicrobial applications.

View Article and Find Full Text PDF