In order to notify the Home Office of your new passport details, you will need update your UK Visas and Immigration (UKVI) account with details of your new passport, once you have accessed your eVisa.
You must do this before you next travel with your new passport so that your eVisa is linked to your new passport;
Once you get your new passport, you will also need to update your details with the University Visa and Immigration Team.
Please visit a Student Services centre with your new passport to have it scanned.