If I buy a home can my husband be entitled to any of it?

It's a complicated question and only can be answered by someone who has all the facts about your finances, specifically, what was the value and composition of marital estate when you separated. Generally, no, marital property is property acquired between the date of the marriage and the date of separation. So, since you bought this house after separation, it is not marital property and he should have no claim to it. However, where it could be complicated is if you used marital funds to by this home. For example if you used joint savings to purchase it or put a big down payment on it. When your divorce ever goes through property settlement, this money may have to be placed back into the marital "pie" and divided equally. You should consult with a lawyer to be safe.