No, you cannot use a solar charger to charge a portable air purifier. Portable air purifiers typically require a significant amount of power to operate, and solar chargers are designed to charge smaller electronic devices like phones and small gadgets. The power requirements of an air purifier are generally beyond the capabilities of a solar charger, which may not provide a consistent or sufficient power supply. It is recommended to use a traditional power source or rechargeable batteries to charge your portable air purifier.