Study on visible light photocatalytic activity of nano diamond core/onion like carbon shell materials
LIANG Baoyan
WANG Changtong
LUO Yitong
HAN Danhui
Abstract：Through annealing nanodiamonds,a composite material featuring a diamond core and a graphene shell was synthesized.It exhibited excellent adsorption and photocatalytic capabilities.The results show that the surface of nano diamond with coarse particle size(particle size of 50 nm)may be graphitized after high-temperature annealing,but no onion graphite shell can be formed.The annealed nano diamond also had no photocatalytic degradation ability for methyl orange.Nanodiamond/onion like carbon materials with a core/shell structure were obtained by high-temperature annealing(1 400～1 500℃)of nano diamond(particle size of 5 nm)prepared by detonation method.The mate-rial exhibited commendable visible light photocatalytic activity.The nano diamond annealed at 1 500 ℃ can almost completely degrade 100 mg/L of methyl orange solution within 1 h .
Keywords：nano diamondphotocatalysiscore/shell structures
Publication Date：2023-12-25
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：6( 11-16 )