# Antiviral potential of proton-type zeolite

## TL;DR

Proton-type zeolites show strong antiviral properties, inactivating viruses like M13 phage and influenza without metal cations.

## Contribution

The study demonstrates that proton-type zeolites can inactivate viruses through direct surface contact, without requiring metal cations.

## Key findings

- Proton-type zeolites inactivated viruses with up to 99% efficiency.
- Direct contact with the external surface of zeolites is necessary for virus inactivation.
- The antiviral effect was observed for both M13 phage and influenza virus.

## Abstract

This study reports the potent antiviral ability of proton-type zeolites without the aid of any metal cations. Antiviral activities of zeolites with different topologies and chemical compositions are investigated using M13 phage and influenza virus. Proton-type zeolites exhibit excellent antiviral activity, equivalent to 99% inactivated. Antiviral tests using a centricon device suggest that direct contact of viruses on the external surface of zeolites is required to inactivate the viruses. This discovery is of importance in an interdisciplinary research field covering both zeolite science and virological science and shed light on the possibility of the development of low-cost and environmentally friendly antiviral zeolites.