A facile strategy involving wet impregnation and manual grinding was employed for synthesizing low loading (0.7 wt%) highly dispersed ultra-small quantum dots (QDs) of Bi₂O₃ anchored graphite carbon nitride (g-C₃N₄) nanosheets. Post-treatment of the as-prepared Bi₂O₃ QDs/g-C₃N₄ by facial photoinduction allowed remarkably boosted photocatalytic removal towards tetracycline (TC) and hexachromium (Cr (VI)) via either oxidation or reduction reactions, with efficiencies about 2.0 and 7.1 times higher than that of pure g-C₃N₄, respectively. The TC degradation pathways, toxicity reduction of intermediates and TOC elimination studies revealed significantly improved photocatalytic activity resulting from the abundant free radicals of O₂⁻, OH, and h⁺ that were produced by enhanced interfacial contact and metallic Bi⁰ bridged charge carrier transfer between Bi₂O₃ QDs and g-C₃N₄ nanosheets. In addition, the novel photocatalyst showed long term structural and photocatalytic stabilities.

采用一种涉及湿浸渍和手动研磨的简便策略来合成Bi ₂ O ₃锚固的碳氮化碳（gC ₃ N ₄）纳米片的低负载（0.7 wt％）高分散超小量子点（QDs）。通过面部光诱导对制备的Bi ₂ O ₃ QDs / gC ₃ N ₄进行后处理，可通过氧化或还原反应显着提高对四环素（TC）和六价铬（Cr（VI））的光催化去除，效率约为2.0是纯gC ₃ N _4的7.1倍， 分别。从的丰富的游离自由基产生的TC降解途径，中间体和TOC消除研究的毒性减少透露显著改善的光催化活性ö ₂ ^- ，OH，和H ⁺通过增强的界面接触和金属制作的Bi即⁰之间架设的电荷载体传输Bi ₂ O ₃ QD和gC ₃ N ₄纳米片。此外，新型光催化剂显示出长期的结构和光催化稳定性。