Here are a few more points about none.

The American Heritage Dictionary defines the pronoun meaning of none as not any, not one, nobody. With these several meanings, it is possible that none takes on both singular and plural meanings. However, if we use not one or nobody, these are both singular.

Not one of the boys is aware of the monster approaching.
Nobody comes when I call.

The explanation for none does note that there are some sentence structures where none must be plural in agreement.

Almost none of the students were finished with the assignment.
None but the players on his team supported him.


None is used with noncount nouns .

None of the milk is in the glass because it is all on the table.
None of the furniture was damaged in the storm.