Ultrasonic-assisted synthesis of mesoporous g-C3N4/Na-bentonite composites and its application for efficient photocatalytic simultaneous removal of Cr(VI) and RhB
作者： Yadan Guo , Chenxi Li , Yiqin Guo , Xuegang Wang , Xiaomeng Li
DOI: 10.1016/J.COLSURFA.2019.123624
关键词: Photocatalysis 、 Graphitic carbon nitride 、 X-ray photoelectron spectroscopy 、 Composite material 、 Composite number 、 Adsorption 、 Nanocomposite 、 Nitride 、 Materials science 、 Mesoporous material
摘要: Abstract Graphitic carbon nitride (g-C3N4) is a new type of nonmetal polymeric semiconductor photocatalyst for removal pollutants. To overcome the low BET surface and electron–hole recombination rate g-C3N4 photocatalysts, we successfully synthesized g-C3N4/Na-bentonite composites using an ultrasonic-assisted method. The XRD showed that composite was composed Na-bentonite. analyses TEM XPS indicated graphite intercalated on Na-bentonite via strategy, nanocomposites presented remarkable light absorption capacities mesoporous structure observed by UV–vis DRS In addition, as-prepared can be used photocatalytic single RhB or Cr(VI), efficiencies Cr(VI) reduction are increased from 53.2% to 88.6% in RhB/Cr(VI) mix-system. Superior stability high were also exhibited up 4 cycles. enhancement due strong adsorption higher charge separation efficiency composites.
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