Publications de Vikram Vinayak Karve

Anisotropic node distortions in amorphous MOFs: Low-valent Zr sites as catalytic hotspots

Emad Oveisi, Berend Smit, Wendy Lee Queen, Kumar Varoon Agrawal, Vikram Vinayak Karve, Andres Adolfo Ortega Guerrero, Till Marian Schertenleib, Jian Hao, Beatriz Bueno Mouriño, Timo Markus Oskar Felder

We introduce a new approach to defect engineering in Zr-based metal-organic frameworks (Zr-MOFs), aiming to reduce Zr site valency while preserving high node connectivity. Using a rapid heat treatment (RHT) in humid air, oxygen vacancies (O-vacancies) were ...

Elsevier BV2025

A post-synthetic modification strategy for enhancing Pt adsorption efficiency in MOF/polymer composites

Mounir Driss Mensi, Emad Oveisi, Mehrdad Asgari, Wendy Lee Queen, Olga Trukhina, Vikram Vinayak Karve, Till Marian Schertenleib

Growing polymers inside porous metal-organic frameworks (MOFs) can allow incoming guests to access the backbone of otherwise non-porous polymers, boosting the number and/or strength of available adsorption sites inside the porous support. In the present wo ...

Royal Soc Chemistry2024

Densification and shaping of pure Cu-BTC powders using a solid-state chemical transformation

Mathieu Soutrenon, Mehrdad Asgari, Wendy Lee Queen, Vikram Vinayak Karve, Alexandre Mabillard, Jordi Espin Marti

MOFs are a class of porous crystalline materials whose unique properties have led to applicability in several fields ranging from gas adsorption to drug delivery. Despite their high potential, MOFs are usually found as fine powders, a property that can lim ...

Iop Publishing Ltd2024

N-Containing Carbons Derived from Microporous Coordination Polymers for Use in Post-Combustion Flue Gas Capture

Emad Oveisi, Wendy Lee Queen, Vikram Vinayak Karve, Jordi Espin Marti

Herein, novel carbons that, owing to a high density of micropores (up to 79%) and N-content (up to 14.9%), offering exciting potential for post-combustion CO2 capture are reported. Given that little is known about how starting materials impact the structur ...

WILEY-V C H VERLAG GMBH2023

3D vs. turbostratic: controlling metal-organic framework dimensionality via N-heterocyclic carbene chemistry

Mounir Driss Mensi, Emad Oveisi, Mehrdad Asgari, Wendy Lee Queen, Ilia Kochetygov, Vikram Vinayak Karve, Shuliang Yang, Anita Justin, Till Marian Schertenleib

Using azolium-based ligands for the construction of metal-organic frameworks (MOFs) is a viable strategy to immobilize catalytically active N-heterocyclic carbenes (NHC) or NHC-derived species inside MOF pores. Thus, in the present work, a novel copper MOF ...

ROYAL SOC CHEMISTRY2022

Recent Advances in MOF-Based Adsorbents for Dye Removal from the Aquatic Environment

Mehrdad Asgari, Vikram Vinayak Karve

The adsorptive removal of dyes from industrial wastewater using commercially available adsorbents is not significantly efficient. Metal-organic frameworks (MOFs) offer outstanding properties which can boost the separation performance over current commercia ...

MDPI2022

Solid-state synthesis of a MOF/polymer composite for hydrodeoxygenation of vanillin

Wendy Lee Queen, Olga Trukhina, Vikram Vinayak Karve, Dragos-Constantin Stoian

A new solid-state method was used to introduce a furan-thiourea polymer into the pores of a MOF, Cr-BDC. Next, the activity of the new MOF-polymer composite containing Pd was assessed in the catalytic hydrodeoxygenation of vanillin, a biomass derived chemi ...

Royal Society of Chemistry2022

Understanding Your Support System: The Design of a Stable Metal-Organic Framework/Polyazoamine Support for Biomass Conversion

Jeremy Luterbacher, Mehrdad Asgari, Wendy Lee Queen, Olga Trukhina, Ilia Kochetygov, Vikram Vinayak Karve, Shuliang Yang

Introducing oligomeric or polymeric units into metal- organic frameworks (MOFs) can result in composites that have significantly improved properties when compared with the individual MOF or polymer building blocks. With such synergy in mind, this work pres ...

AMER CHEMICAL SOC2022

Hydro-processing of biomass using novel metal-organic framework (MOF)/polymer composite catalysts

Vikram Vinayak Karve

Generating value, in the form of functional chemicals, from biomass is a critical need of today. It is expected that replacing petroleum with biomass as the source of many commodity and fine chemicals can lead the transition away from a fossil-fuel based e ...

EPFL2022

Hybridization of Synthetic Humins with a Metal-Organic Framework for Precious Metal Recovery and Reuse

Wendy Lee Queen, Claudia Esther Avalos, Olga Trukhina, Vikram Vinayak Karve, Till Marian Schertenleib, Jordi Espin Marti

The number of synthetic strategies used to functionalize MOFs with polymers is rapidly growing; this stems from the knowledge that non-native polymeric guests can significantly boost MOF performance in a number of desirable applications. The current work p ...

AMER CHEMICAL SOC2021

An Investigation into the Intrinsic Peroxidase-Like Activity of Fe-MOFs and Fe-MOFs/Polymer Composites

Daniel Teav Sun, Wendy Lee Queen, Vikram Vinayak Karve

The quest for developing materials that provide a perfect trade-off between factors such as enzyme-like response, stability, and low cost has been a long-standing challenge in the field of biosensing. Metal-organic frameworks (MOFs) and their composites ha ...

Wiley2021

Synthetic Tunability of Colloidal Covalent Organic Framework/Nanocrystal Hybrids

Chethana Janardhana Gadiyar, Raffaella Buonsanti, Seyedehbehnaz Varandili, Yannick Thomas Guntern, Vikram Vinayak Karve, Jan Vávra, Ona Segura Lecina

The combination of porous reticular frameworks and nanocrystals (NCs) offers a rich playground to design materials with functionalities, which are beneficial for a large variety of applications. Achieving compositional and structural tunability of these hy ...

2021

Efficient reductive amination of HMF with well dispersed Pd nanoparticles immobilized in a porous MOF/polymer composite

Jeremy Luterbacher, Emad Oveisi, Daniel Teav Sun, Wendy Lee Queen, Olga Trukhina, Vikram Vinayak Karve, Shuliang Yang

Aminated derivatives of 5-hydroxymethylfurfural (HMF) and furfural are critical intermediates for the pharmaceutical industry. The state-of-the-art catalysts currently used for these syntheses are mostly homogeneous in nature, motivating the design of recy ...

2020

Enhancing MOF performance through the introduction of polymer guests

Mehrdad Asgari, Daniel Teav Sun, Wendy Lee Queen, Li Peng, Olga Trukhina, Ilia Kochetygov, Vikram Vinayak Karve, Shuliang Yang, Anita Justin, Jordi Espin Marti

In this contribution, recent advances in the construction of MOF-polymer composites and their corresponding applications are briefly reviewed. The appearance of such architectures is becoming prominent in recent literature, due to the fact that the union o ...

2020

The Dark Energy Survey: Data Release 1

Vanda Carla Costa Grisel, Juan Andrei Villarroel Fernandez, Eduardo Sanchez, Josiane Angèle Charlotte Smith-Clerc, Craig Matthew Smith, Aaron James Rossini, Yi Zhang, Augusto Martins Lima, Jonathan Andrew Blazek, Xi Chen, Vikram Vinayak Karve, Jennifer Kaitlyn Olsen, Xin Chen

We describe the first public data release of the Dark Energy Survey, DES DR1, consisting of reduced single-epoch images, co-added images, co-added source catalogs, and associated products and services assembled over the first 3 yr of DES science operations ...

IOP PUBLISHING LTD2018