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以Bi(NO_3)_3·5H_2O和Na_2WO_4·2H_2O为主要原料,采用水热法合成了纯相Bi_2WO_6,并对其进行非金属离子Br-掺杂改性。采用XRD、SEM、TEM、XPS、Raman、PL和DRS研究了Br~-掺杂对Bi_2WO_6的物相结构、形貌和可见光催化性能的影响。结果表明,Br-掺杂可有效提高Bi_2WO_6的可见光催化性能,当掺杂量(物质的量百分数)为8%时,溴掺杂Bi_2WO_6的光催化性能最好,可见光照射40 min后,可降解96.73%的罗丹明-B,与未掺杂Bi_2WO_6相比,其降解率提高了36.32%。
Pure Bi 2 WO 6 was synthesized by hydrothermal method using Bi (NO 3) 3 · 5H 2 O and Na 2 WO 4 · 2H 2 O as main raw materials, and its nonmetal ions were Br-doped modified. The effects of Br ~ - doping on the phase structure, morphology and visible light catalytic properties of Bi_2WO_6 were studied by XRD, SEM, TEM, XPS, Raman, PL and DRS. The results showed that Br-doping could effectively improve the visible light catalytic activity of Bi_2WO_6. The photocatalytic activity of bromine-doped Bi_2WO_6 was the best when the doping amount (mass fraction) was 8% 96.73% rhodamine-B, compared with undoped Bi_2WO_6, its degradation rate increased by 36.32%.