Journal ArticleDOI
Bifunctional NH2-MIL-88(Fe) metal–organic framework nanooctahedra for highly sensitive detection and efficient removal of arsenate in aqueous media
Donghua Xie,Donghua Xie,Yue Ma,Yue Ma,Yue Gu,Yue Gu,Hongjian Zhou,Haimin Zhang,Guozhong Wang,Yunxia Zhang,Huijun Zhao,Huijun Zhao +11 more
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In this paper, an amino-functionalized iron-based metal organic framework (MOF) nanooctahedra has been successfully synthesized via a facile one-step solvothermal route for the selective detection and facile removal of arsenate from polluted water.Abstract:
Extensive exposure to and high toxicity of arsenic species have posed severe health threats worldwide. Consequently, it is imperative to develop novel dual functional materials, which can not only precisely monitor trace levels of arsenic, but also simultaneously realize its efficient decontamination. In this study, amino-functionalized iron-based metal organic framework (MOF) nanooctahedra have been successfully synthesized via a facile one-step solvothermal route for the selective detection and facile removal of arsenate from polluted water. Benefiting from the unique fluorescence enhancement and high specific surface area as well as excellent stability, the resultant NH2-MIL-88(Fe) nanooctahedra can be utilized for the quantitative assay of arsenate, accompanied by a fast response time (<1 min), broad linear range (0.1–50 μM) and high sensitivity (detection limit of as low as 4.2 ppb) along with excellent selectivity towards arsenate. More significantly, the proposed sensing system has been further exemplified for the determination of arsenate in real environmental water samples with acceptable recoveries, highlighting its feasibility in complicated environmental samples. It is noteworthy that the as-synthesized NH2-MIL-88(Fe) nanooctahedra also exhibit extraordinary sorption performance towards As(V) in terms of high saturated adsorption capacity (125 mg g−1) and fast sorption kinetics, capable of easily reducing trace amounts of As(V) to below the acceptable standard for drinking water within 60 min. These results indicate that the obtained NH2-MIL-88(Fe) nanooctahedra can be expected to be an excellent candidate for arsenic determination and remediation from contaminated water systems.read more
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Metal–organic framework-based materials: superior adsorbents for the capture of toxic and radioactive metal ions
Jie Li,Jie Li,Xiangxue Wang,Guixia Zhao,Changlun Chen,Zhifang Chai,Ahmed Alsaedi,Tasawar Hayat,Xiangke Wang,Xiangke Wang,Xiangke Wang +10 more
TL;DR: This review focuses on recent progress in reported MOFs and MOF-based composites as superior adsorbents for the efficient removal of toxic and nuclear waste-related metal ions.
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Valence Engineering via In Situ Carbon Reduction on Octahedron Sites Mn3O4 for Ultra‐Long Cycle Life Aqueous Zn‐Ion Battery
Qiuyang Tan,Qiuyang Tan,Xueting Li,Bao Zhang,Xu Chen,Yawen Tian,Houzhao Wan,Lishang Zhang,Ling Miao,Cong Wang,Yi Gan,Jianjun Jiang,Yi Wang,Hao Wang +13 more
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Highly efficient sunlight-driven reduction of Cr(VI) by TiO2@NH2-MIL-88B(Fe) heterostructures under neutral conditions
TL;DR: In this paper, an efficient MOF-based photocatalytic reduction towards Cr(VI) in a neutral aqueous media has been demonstrated, where the photoelectrons and superoxide radicals were the main active species.
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Adsorption behavior of arsenicals on MIL-101(Fe): The role of arsenic chemical structures
TL;DR: MIL-101(Fe) is confirmed a reliable adsorbent to control the aqueous arsenic species contamination and emphasize the significant role of the chemical structure of arsenic speciation on adsorption performances of MOFs.
Journal ArticleDOI
The synthesis strategies and photocatalytic performances of TiO2/MOFs composites: A state-of-the-art review
Chong-Chen Wang,Xun Wang,Wen Liu +2 more
TL;DR: In this paper, the outlooks and challenges of TiO2/MOF composites as photocatalysts for energy conversion and environment remediation are proposed, and the fabrication strategies, characterizations techniques, photocatalysis activities and the mechanisms of some selected selected composites were reviewed and highlighted.
References
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Introduction to Metal–Organic Frameworks
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Luminescent Functional Metal–Organic Frameworks
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Postsynthetic Modifications of Iron-Carboxylate Nanoscale Metal−Organic Frameworks for Imaging and Drug Delivery
TL;DR: Potential utility of the new NMOF-based nanodelivery vehicles for optical imaging and anticancer therapy was demonstrated in vitro using HT-29 human colon adenocarcinoma cells.
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Highly Stable Zr(IV)-Based Metal–Organic Frameworks for the Detection and Removal of Antibiotics and Organic Explosives in Water
Bin Wang,Xiu-Liang Lv,Dawei Feng,Lin-Hua Xie,Jian Zhang,Jian Zhang,Ming Li,Ya-Bo Xie,Jian-Rong Li,Hong-Cai Zhou +9 more
TL;DR: It was demonstrated that the adsorption plays an important role in the preconcentration of analytes, which can further increase the fluorescent quenching efficiency and be potentially useful in monitoring water quality and treating wastewater.
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ERRATUM: Competition among memes in a world with limited attention
TL;DR: Surprisingly, this work can explain the massive heterogeneity in the popularity and persistence of memes as deriving from a combination of the competition for the authors' limited attention and the structure of the social network, without the need to assume different intrinsic values among ideas.