This mini-review outlines the research progress and characterization techniques of dual-atomic-site catalysts (DACs) and presents representative examples of DAC-based nanozymes. It also provides current challenges and perspectives for researchers interested in this field.
Nanozymes, a new class of functional nanomaterials with enzyme-like characteristics, have recently made great achievements and have become potential substitutes for natural enzymes. In particular, single-atomic nanozymes (Sazymes) have received intense research focus on account of their versatile enzyme-like performances and well-defined spatial configurations of single-atomic sites. More recently, dual-atomic-site catalysts (DACs) containing two neighboring single-atomic sites have been explored as next-generation nanozymes, thanks to the flexibility in tuning active sites by various combinations of two single-atomic sites. This minireview outlines the research progress of DACs in their synthetic approaches and the latest characterization techniques highlighting a series of representative examples of DAC-based nanozymes. In the final remarks, we provide current challenges and perspectives for developing DAC-based nanozymes as a guide for researchers who would be interested in this exciting field. This mini-review captures the emerging direction of nanozymes and presents a comprehensive overview of dual-atomic site nanozymes. It guides the exploration of next-generation nanozymes and inspires further innovation in the field.
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