You can buy little doggie socks these days, your local pet shop will have them - keeping them on is another matter! Mini elastic bands might help, the sort they use on bunches of watrercress...
In these circumstances I boil up some rosemary in an old pan, and dip the paw into the cold 'rosemary tea' as often as possible, 4/4 times a day anyway - this stops the paws getting infected and helps healing. I also use an antiseptic cream - aloe vera gel would be good, or just Savlon or any kind of herbal cold cream from your health food shop, or Bach Rescue Remedy - anything really to keep the pad from drying and splitting.
It should heal up quite fast - if not, get an antiboitic shot at the vets but I doubt you'll need it esp if using the rosemary. If he won't stop licking the cut pads, try pounding up some dried rosemary and sprinkling that on when you've put the cream on - he won't like the taste and it's very antiseptic.