Agree with focusing on fit rather than rank.
You may also choose to start your search by looking for faculty who publish in the area of sustainable operations and then talking to students whose dissertations they have supervised. A couple of names come to mind..
Luk Van Wassenhove, Professor at INSEAD
Charles Corbett, Professor at UCLA
Tom Choi, Professor at Arizona State
Laurens Debo, Associate Professor at Chicago Booth (Some of his early work was in the area).