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Double-Shelled Porous g-C3N4 Nanotubes Modified with Amorphous Cu-Doped FeOOH Nanoclusters as 0D/3D Non-Homogeneous Photo-Fenton Catalysts for Effective Removal of Organic Dyes
Small ( IF 13.0 ) Pub Date : 2023-03-04 , DOI: 10.1002/smll.202208232 Jing Tang 1 , Rongping Xu 1 , Guozhe Sui 1, 2 , Dongxuan Guo 1, 2 , Zhenlong Zhao 1, 2 , Shanshan Fu 1, 2 , Xue Yang 1, 2 , Yue Li 3 , Jinlong Li 1, 2
Small ( IF 13.0 ) Pub Date : 2023-03-04 , DOI: 10.1002/smll.202208232 Jing Tang 1 , Rongping Xu 1 , Guozhe Sui 1, 2 , Dongxuan Guo 1, 2 , Zhenlong Zhao 1, 2 , Shanshan Fu 1, 2 , Xue Yang 1, 2 , Yue Li 3 , Jinlong Li 1, 2
Affiliation
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Graphite phased carbon nitride (g-C3N4) has attracted extensive attention attributed to its non-toxic nature, remarkable physical–chemical stability, and visible light response properties. Nevertheless, the pristine g-C3N4 suffers from the rapid photogenerated carrier recombination and unfavorable specific surface area, which greatly limit its catalytic performance. Herein, 0D/3D Cu-FeOOH/TCN composites are constructed as photo-Fenton catalysts by assembling amorphous Cu-FeOOH clusters on 3D double-shelled porous tubular g-C3N4 (TCN) fabricated through one-step calcination. Combined density functional theory (DFT) calculations, the synergistic effect between Cu and Fe species could facilitate the adsorption and activation of H2O2, and the separation and transfer of photogenerated charges effectively. Thus, Cu-FeOOH/TCN composites acquire a high removal efficiency of 97.8%, the mineralization rate of 85.5% and a first-order rate constant k = 0.0507 min−1 for methyl orange (MO) (40 mg L−1) in photo-Fenton reaction system, which is nearly 10 times and 21 times higher than those of FeOOH/TCN (k = 0.0047 min−1) and TCN (k = 0.0024 min−1), respectively, indicating its universal applicability and desirable cyclic stability. Overall, this work furnishes a novel strategy for developing heterogeneous photo-Fenton catalysts based on g-C3N4 nanotubes for practical wastewater treatment.
中文翻译：
用无定形 Cu 掺杂 FeOOH 纳米团簇修饰的双壳多孔 g-C3N4 纳米管作为 0D/3D 非均相光芬顿催化剂用于有效去除有机染料
石墨相氮化碳（gC 3 N 4）由于其无毒性质、显着的物理化学稳定性和可见光响应特性而受到广泛关注。然而，原始的gC 3 N 4存在快速的光生载流子复合和不利的比表面积，这极大地限制了其催化性能。在此，通过在 3D 双壳多孔管状 gC 3 N 4 上组装无定形 Cu-FeOOH 团簇，将 0D/3D Cu-FeOOH/TCN 复合材料构建为光芬顿催化剂（TCN）通过一步煅烧制造。结合密度泛函理论（DFT）计算，Cu和Fe物种之间的协同作用可以促进H 2 O 2的吸附和活化，并有效地分离和转移光生电荷。因此，Cu-FeOOH/TCN 复合材料的去除效率高达 97.8%，矿化率为 85.5%，甲基橙 (MO) (40 mg L -1 )的一级速率常数 k = 0.0507 min -1 photo-Fenton反应体系，比FeOOH/TCN ( k = 0.0047 min -1 ) 和TCN ( k = 0.0024 min -1 )高近10倍和21倍），分别表明其普遍适用性和理想的循环稳定性。总体而言，这项工作为开发用于实际废水处理的基于 gC 3 N 4纳米管的多相光芬顿催化剂提供了一种新策略。
更新日期：2023-03-04
中文翻译：
用无定形 Cu 掺杂 FeOOH 纳米团簇修饰的双壳多孔 g-C3N4 纳米管作为 0D/3D 非均相光芬顿催化剂用于有效去除有机染料
石墨相氮化碳（gC 3 N 4）由于其无毒性质、显着的物理化学稳定性和可见光响应特性而受到广泛关注。然而，原始的gC 3 N 4存在快速的光生载流子复合和不利的比表面积，这极大地限制了其催化性能。在此，通过在 3D 双壳多孔管状 gC 3 N 4 上组装无定形 Cu-FeOOH 团簇，将 0D/3D Cu-FeOOH/TCN 复合材料构建为光芬顿催化剂（TCN）通过一步煅烧制造。结合密度泛函理论（DFT）计算，Cu和Fe物种之间的协同作用可以促进H 2 O 2的吸附和活化，并有效地分离和转移光生电荷。因此，Cu-FeOOH/TCN 复合材料的去除效率高达 97.8%，矿化率为 85.5%，甲基橙 (MO) (40 mg L -1 )的一级速率常数 k = 0.0507 min -1 photo-Fenton反应体系，比FeOOH/TCN ( k = 0.0047 min -1 ) 和TCN ( k = 0.0024 min -1 )高近10倍和21倍），分别表明其普遍适用性和理想的循环稳定性。总体而言，这项工作为开发用于实际废水处理的基于 gC 3 N 4纳米管的多相光芬顿催化剂提供了一种新策略。
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