Dynamic defects boost in-situ H 2 O 2 piezocatalysis for water cleanup

Creating efficient catalysts for simultaneous H 2 O 2 generation and pollutant degradation is vital. Piezocatalytic H 2 O 2 synthesis offers a promising alternative to traditional methods but faces challenges like sacrificial reagents, harsh conditions, and low activity. In this study, we introduce a cobalt-loaded ZnO (CZO) piezocatalyst that efficiently generates H 2 O 2 from H 2 O and O 2 under ultrasonic (US) treatment in ambient aqueous conditions. The catalyst demonstrates exceptional performance with ~50.9% TOC removal of phenol and in situ generation of 1.3 mM H 2 O 2 , significantly outperforming pure ZnO. Notably, the CZO piezocatalyst maintains its H 2 O 2 generation capability even after multiple…

• NN
  National Natural Science Foundation of China

  Awards: 22276071, B16017, 22325602, 22176060, 52000101, 2018SHZDZX03, 22076064
• EC
  East China University of Science and Technology
• SA
  Science and Technology Commission of Shanghai Municipality

  Awards: 20DZ2250400, 23XD1421000, B16017, 2018SHZDZX03
• P2
  Project 211

  Awards: 2018SHZDZX03, B16017
• PO
  Program of Shanghai Academic Research Leader

  Award: 23XD1421000