Mesoporous magnetic g-C3N4 nanocomposites for photocatalytic environmental remediation under visible light.

摘要: Abstract Mesoporous magnetic Fe3O4/g-C3N4 nanocomposites were synthesized by a facile precipitation method using deionized water as solution. And the prepared materials characterized mean of various detection methods. At same time, photocatalytic activity synthetic material photocatalyst under visible light was tested taking degradation rhodamine B in mark. Results show that as-synthesized have high specific surface areas about 5–10.5 times pure g-C3N4 and saturation magnetizations, which can ensure smooth recovery used nanomaterials action external field. The addition Fe3O4 greatly extents response range to reduces recombination rate photoinduced electron-hole pairs. Meanwhile, increases so ratio reached 97.6% after 4 h irradiation. Furthermore, also excellent stability almost not reduce 5 continuous reuse photocatalyst. Free radical scavenging experiments shows hydroxyl groups are main free radicals reaction, peroxyradicals holes play secondary role. Therefore, it be predicted mesoporous will broad application prospect environmental remediation.