Not anything with "ionization". Ionized air is a cute name for ozone. Ozone causes all the problems to your lungs that you clean air to avoid (well, except COVID infection I guess).
I wouldn't go for UV either since it either produces ozone or is quite bad to get exposed to depending on frequency range.
Get an air filter with high throughput. HEPA is standard, but many people argue that lower grade filters with higher throughput can be more noise efficient.
Hard to have sympathy with Elsevier, but this reeks of a failed COVID snake oil get-rich-quick schemer blaming someone else for not succeeding.