Two new transition CdII and MnII-based MOFs for highly effective photodegradation antibiotics

IF 2.7 3区化学 Q2 CHEMISTRY, INORGANIC & NUCLEAR Inorganica Chimica Acta Pub Date : 2024-08-03 DOI:10.1016/j.ica.2024.122296

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Abstract

Two coordination polymers (CPs), [Cd₃(L)₃(phen)₂]_n (1) and [Mn(L)(phen)]_n (2), [H₃L=3,3′-(1,4-phenylenebis(methylenoxy)dibezoic acid] were synthesized via hydrothermal method. 1 features a 2D layered structure with the potential for 3D network formation through weak interactions, 2 exhibits a 1D waved chain capable of forming 3D polymeric chains via intra- or intermolecular hydrogen bonding (OH···O) interactions. Both CPs demonstrate promising photocatalytic activity against antibiotics, including chloramphenicol (CAP), metronidazole (MDZ), nitrofurazone (NFZ), oxytetracycline (OXY), and sulfamethazine (SMZ). Notably, CP 1 shows superior photocatalytic activity for NFZ degradation. Systematic investigations revealed that under optimized conditions, CP 1 achieves a remarkable ∼ 92.21 % photodegradation of NFZ at a concentration of 40 ppm NFZ with a photocatalyst dosage of 25 mg/L within 50 min. Radical quencher experiments identified h⁺ (positive holes) and O₂^•- as the primary active species driving the photodegradation process. Additionally, CP 1 maintained consistent performance over five cycles, indicating its stability and reusability for NFZ degradation.

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两种新的基于 CdII 和 MnII 的过渡型 MOFs，可用于高效光降解抗生素

通过水热法合成了[Cd3(L)3(phen)2]n (1)和[Mn(L)(phen)]n (2)两种配位聚合物（CPs），[H3L=3,3′-(1,4-亚苯基双(甲烯氧基)二苯甲酸]。1 具有二维层状结构，可通过弱相互作用形成三维网络；2 表现出一维波状链，可通过分子内或分子间氢键（OH--O）相互作用形成三维聚合物链。两种氯化石蜡都对抗生素具有良好的光催化活性，包括氯霉素（CAP）、甲硝唑（MDZ）、硝基呋喃唑酮（NFZ）、土霉素（OXY）和磺胺甲噁嗪（SMZ）。值得注意的是，CP 1 在降解 NFZ 方面显示出卓越的光催化活性。系统研究表明，在优化条件下，当 NFZ 浓度为 40 ppm、光催化剂用量为 25 mg/L 时，CP 1 在 50 分钟内对 NFZ 的光降解率可达 92.21%。自由基淬灭实验确定 h+（正空穴）和 O2--是驱动光降解过程的主要活性物种。此外，CP 1 在五个周期内保持了稳定的性能，表明其在降解 NFZ 方面具有稳定性和可重复性。

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来源期刊

Inorganica Chimica Acta 化学-无机化学与核化学

CiteScore

6.00

自引率

3.60%

发文量

440

审稿时长

35 days

期刊介绍： Inorganica Chimica Acta is an established international forum for all aspects of advanced Inorganic Chemistry. Original papers of high scientific level and interest are published in the form of Articles and Reviews. Topics covered include: • chemistry of the main group elements and the d- and f-block metals, including the synthesis, characterization and reactivity of coordination, organometallic, biomimetic, supramolecular coordination compounds, including associated computational studies; • synthesis, physico-chemical properties, applications of molecule-based nano-scaled clusters and nanomaterials designed using the principles of coordination chemistry, as well as coordination polymers (CPs), metal-organic frameworks (MOFs), metal-organic polyhedra (MPOs); • reaction mechanisms and physico-chemical investigations computational studies of metalloenzymes and their models; • applications of inorganic compounds, metallodrugs and molecule-based materials. Papers composed primarily of structural reports will typically not be considered for publication.