Abstract Mg Al layered double oxide (LDO) nanosheets were coated by B,N-codoped carbon (MA#C(B,N)) for the enhanced photocatalytic degradation of tetracycline hydrochloride (TCH) under solar light irradiation. In contrast with bare Mg Al LDO and BN, MA#C(B,N) nanosheets present higher photocatalytic efficiency for TCH removal. The photocatalytic activity of obtained composites are greatly affected by B,N-codoped content, TCH concentrate, pH, and inorganic ions. The optimal MA#C(B,N)-3 exhibited excellent photocatalytic activity and durability in the visible light region, and its removal efficiency was 98.85% for 120 mg L−1 of TCH solution. B,N-codoped carbon with distorted carbon lattice is favorable for the photo-generated electrons trapping and the charge transfer, meanwhile, Mg Al LDO with sufficient basic sites and oxygen vacancies can accelerate the rapid separation of charge carriers at junction interface, enhancing the photocatalytic activity of MA#C(B,N).

中文翻译：

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具有 B,N 共掺杂碳涂层的 Mg Al 层状双氧化物纳米片增强光催化去除四环素

摘要 Mg Al 层状双氧化物 (LDO) 纳米片被 B,N 共掺杂碳 (MA#C(B,N)) 包覆，以增强四环素盐酸盐 (TCH) 在太阳光照射下的光催化降解。与裸镁铝 LDO 和 BN 相比，MA#C(B,N) 纳米片对 TCH 去除具有更高的光催化效率。所得复合材料的光催化活性受 B,N 共掺杂量、TCH 浓度、pH 值和无机离子的影响很大。最优的MA#C(B,N)-3在可见光区表现出优异的光催化活性和耐久性，120 mg L-1 TCH溶液的去除率为98.85%。B,N-共掺杂碳晶格畸变有利于光生电子俘获和电荷转移，同时，