One-step, template-free route to silver porous hollow spheres and their optical property

Silver porous hollow spheres (SPHS) were obtained via ultrasonic spray pyrolysis of aqueous solutions containing AgNO3 and glucose. The pores with size in the range of tens to hundreds nanometers were randomly distributed in the shells of silver hollow spheres. SPHS exhibited a wide Vis-NIR adsorption in the range of 400-1100 nm.