Material Science and Engineering College,Northeast Forestry University,Harbin,Heilongjiang, 150040,China.
Chemistry and Chemical Engineering School,Northeast Petroleum University,Daqing,Heilongjiang, 163318,China.
Ecotoxicol Environ Saf. 2020 Oct 1;202:110897. doi: 10.1016/j.ecoenv.2020.110897. Epub 2020 Jul 1.
Combining adsorption and photocatalysis is an effective strategy for degrading organic pollutants. Here, BiVO@diatomite composite photocatalyst (BiVO@diatomite CP) was prepared by hydrothermal synthesis from Bi(NO)·5HO glycerin solution, NHVO solution and diatomite. BiVO@diatomite/microcrystalline cellulose/PVB composite fibers (BiVO@diatomite/MCC/PVBCFs) were prepared from BiVO@diatomite CPs, microcrystalline cellulose (MCC) and PVB ethanol solution using the electrospinning method. BiVO@diatomite/MCC/PVBCFs were then mixed with pulp fibers to prepare the visible light-responsive photocatalytic paper. BiVO@diatomite CP with a BiVO/diatomite ratio of 6:4 had good interface states and displayed good photocatalytic activity with 64.32% degradation of methylene blue (MB) after 4 h. A PVB ethanol solution (6%) was formulated with BiVO@diatomite CP and MCC to provide an ethanol spinning solution (12% solid) to prepare BiVO@diatomite/MCC/PVBCFs (3:3:4). The resulting fibers had smooth surfaces, compact structures and exhibited good photocatalytic activity (66.80% and 56.80% degradation of MB and formaldehyde (HCHO), respectively, after 4 h). Photocatalytic paper containing 18% BiVO@diatomite/MCC/PVBCFs had good photocatalytic activity with 50.20% degradation of HCHO after 4 h. This paper also had good physical properties and has the potential to be used for the photocatalytic degradation of indoor air pollutants, such as HCHO.
将吸附和光催化相结合是降解有机污染物的有效策略。在这里，通过水热合成，以 Bi(NO)·5HO 甘油溶液、NHVO 溶液和硅藻土为原料，制备了 BiVO@硅藻土复合光催化剂（BiVO@diatomite CP）。通过静电纺丝法，用 BiVO@diatomite CPs、微晶纤维素（MCC）和 PVB 乙醇溶液制备了 BiVO@diatomite/MCC/PVBCFs。然后将 BiVO@diatomite/MCC/PVBCFs 与纸浆纤维混合，制备可见光响应光催化纸。BiVO@diatomite CP 的 BiVO/diatomite 比为 6:4，具有良好的界面状态，在 4 小时内对亚甲基蓝（MB）的降解率达到 64.32%，显示出良好的光催化活性。将 BiVO@diatomite CP 和 MCC 配制成 6%的 PVB 乙醇溶液，提供 12%固含量的乙醇纺丝溶液，制备 BiVO@diatomite/MCC/PVBCFs（3:3:4）。所得纤维表面光滑、结构致密，具有良好的光催化活性（4 小时内对 MB 和甲醛（HCHO）的降解率分别为 66.80%和 56.80%）。含 18%BiVO@diatomite/MCC/PVBCFs 的光催化纸在 4 小时内对 HCHO 的降解率达到 50.20%，具有良好的光催化活性。该纸还具有良好的物理性能，有望用于光催化降解室内空气污染物，如 HCHO。
