The lower specific surface area and limited surface contact between BiOCl and TiO in composite fabricated by hybridization of TiO with BiOCl extremely hinder its catalytic performance. In this work, the area of interface contact between BiOCl and TiO was increased through the mediation of SiO, and a Bi-modified ternary 0D/2D/2D TiO/BiOCl Z-scheme heterojunction photocatalyst with large specific surface area (= 237.83 mg) and surface plasmon resonance (SPR) effect was constructed in situ by ingeniously utilizing the reduction of carbon species generated during the calcination process. The results show that the COD removal rate of Bi/TBOC-10% for real liquor brewing wastewater (LBW) reaches 90.5% after 10 hours of visible light irradiation, which is 2.6 times and 2.1 times that of TiO and Degussa P25, respectively. The COD removal rate of the composite was reduced only by 8.9% after five cycles of performance test (50 h). Photoluminescence spectroscopy (PL), Transient Photocurrent Response (TPR), Electrochemical Impedance Spectroscopy (EIS) and BET characterization suggest that its excellent photocatalytic activity should be attributed to the Z-scheme heterojunction that broadens the light absorption range while retains strong oxidation-reduction active sites, the SPR effect that facilitates the separation and migration of photogenerated carriers, and high specific surface area of the composite that provides more active sites for the photodegradation reaction.

中文翻译：

---

Bi改性TiO2/BiOCl的紧密且充分接触的Z型异质结：原位构建并促进可见光驱动的酿酒废水净化


TiO2与BiOCl杂化制备的复合材料中BiOCl和TiO之间较低的比表面积和有限的表面接触极大地阻碍了其催化性能。该工作通过SiO的介导增加了BiOCl和TiO之间的界面接触面积，并制备了具有大比表面积（= 237.83mg）的Bi改性三元0D/2D/2D TiO/BiOCl Z型异质结光催化剂。通过巧妙地利用煅烧过程中产生的碳物种的还原，原位构建了表面等离子共振（SPR）效应。结果表明，可见光照射10h后，Bi/TBOC-10%对真酒酿造废水(LBW)的COD去除率达到90.5%，分别是TiO和Degussa P25的2.6倍和2.1倍。经过5个循环的性能测试（50h）后，复合材料的COD去除率仅降低8.9%。光致发光光谱（PL）、瞬态光电流响应（TPR）、电化学阻抗谱（EIS）和BET表征表明，其优异的光催化活性应归因于Z型异质结拓宽了光吸收范围，同时保留了强氧化还原活性SPR效应有利于光生载流子的分离和迁移，复合材料的高比表面积为光降解反应提供了更多的活性位点。