Abstract Graphite-like carbon nitride (g-C3N4)-based nanocomposites with zinc terpyridyl (ZnTPy) coordination polymers (CPs) were developed for photo-induced current generation and the catalytic degradation of organic dyes. The oxidized g-C3N4 nanoparticles (O-g-C3N4) were reacted with silane and terpyridyl benzyl bromide (TPyBenBr) to form O-g-C3N4TPy nanohybrids, which then acted as a support for the construction of O-g-C3N4-based nanocomposites, using Zn(CF3SO3)2 as a connector, and bidentate ligand of 1,4-di([2,2′:6′,2′'- terpyridin]-4′-yl)benzene (BTPy) as a linker, respectively. The luminescent emission features revealed that the recombination of charged carriers was inhibited in the O-g-C3N4@(ZnBTPy)n nanocomposites. As a consequence, the photocurrent density for the electrode, modified by the developed nanocomposites, was about 5.6 times higher than that modified by the original O-g-C3N4 particles; furthermore, their catalytic degradation efficiency for methyl orange (MO) and Congo red (CR) was about 20–25 times higher than that for the original O-g-C3N4 nanoparticles. The improved performance was attributed to the fact that, in addition to their enhanced absorption ability, the ZnBTPy CP films could effectively improve the electron transfer efficiency and generation of O2 − radicals on the surfaces of the nanocomposites.

中文翻译：

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用于光电流产生和有机染料光催化降解的氮化碳基纳米复合材料与三联吡啶锌配位聚合物的界面自组装

摘要 开发了具有三联吡啶锌 (ZnTPy) 配位聚合物 (CPs) 的类石墨氮化碳 (g-C3N4) 纳米复合材料，用于光诱导电流产生和有机染料的催化降解。氧化的 g-C3N4 纳米粒子 (Og-C3N4) 与硅烷和三联吡啶基溴化 (TPyBenBr) 反应形成 Og-C3N4TPy 纳米杂化物，然后作为构建基于 Og-C3N4 的纳米复合材料的载体，使用 Zn(CF3SO3 )2作为连接体，1,4-二([2,2':6',2''-三联吡啶]-4'-基)苯(BTPy)的双齿配体分别作为连接体。发光特征表明，Og-C3N4@(ZnBTPy)n纳米复合材料中带电载流子的复合受到抑制。因此，由开发的纳米复合材料改性的电极的光电流密度约为 5。比原来的Og-C3N4颗粒改性的高6倍；此外，它们对甲基橙 (MO) 和刚果红 (CR) 的催化降解效率比原始 Og-C3N4 纳米颗粒高约 20-25 倍。性能的提高归因于这样一个事实，除了增强的吸收能力外，ZnBTPy CP 薄膜还可以有效提高电子转移效率和纳米复合材料表面 O2 - 自由基的产生。