Can we use nothing more than sunlight and inexpensive materials to produce clean hydrogen fuel while also removing toxic pollutants from water? That question shaped our recent work with γ-In2S3, a semiconductor that has intrigued researchers for years but still holds untapped potential. By making s ubtle changes at the atomic scale, we discovered that we could significantly enhance its performance under visible light without adding noble metals or forming complex heterojunctions. ...read more read less