Fabrication strategies and Cr(VI) elimination activities of the MOF-derivatives and their composites

Li, Yuxuan; Han, Yong-Chun; Wang, Chong-Chen

doi:10.1016/j.cej.2020.126648

Cited by 104 publications

(22 citation statements)

References 199 publications

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“…Metal–organic frameworks (MOFs) have the advantages of high porosity, tunable pore size, and large internal specific surface area. 7,8 Reduced graphene oxide (rGO) can anchor metal nanoparticles through its inherent residual oxygen-containing functional groups and defect sites, 9 which can enhance the conductivity of catalysts. Improve the dispersion of the supported metals to enhance the electrocatalytic activity and stability of EGOR by providing more active centers and electron transport.…”

Section: Introductionmentioning

confidence: 99%

PdPbAg alloy NPs immobilized on reduced graphene oxide/In₂O₃ composites as highly active electrocatalysts for direct ethylene glycol fuel cells

Zhong

Wang

et al. 2022

RSC Adv.

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Section: Introductionmentioning

confidence: 99%

PdPbAg alloy NPs immobilized on reduced graphene oxide/In₂O₃ composites as highly active electrocatalysts for direct ethylene glycol fuel cells

Zhong

Wang

et al. 2022

RSC Adv.

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“…Hexavalent chromium Cr(VI) ions, an essential industrial metal raw material, have been widely applied in paint making, leather tanning, alloy preparation, wood preservation, and so on. − However, water-soluble Cr(VI) ions existing in the form of Cr 2 O 7 2– or CrO 4 2– are also considered to be highly toxic and carcinogenic contaminants, leading to serious damage to the environment and human beings. , These issues accelerated the development of technology for the removal and conversion of Cr(VI). Notably, Cr(III) exhibits characteristics of low toxicity and easily formed insoluble precipitates in neutral or basic solutions .…”

Section: Introductionmentioning

confidence: 99%

Visible-Light-Driven Sonophotocatalysis for the Rapid Reduction of Aqueous Cr(VI) Based on Zirconium–Porphyrin Metal–Organic Frameworks with csq Topology

et al. 2021

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Photochemical treatment of highly toxic Cr(VI) is a desirable and ecofriendly method to protect the environment and human beings. In this study, a MOF-based sonophotocatalytic system is established, in which visible-light-driven sonophotocatalytic reduction of toxic Cr(VI) to Cr(III) in water is investigated using zirconium−porphyrin metal−organic frameworks (MOFs) structured as PCN-222(M) [M = H 2 , Zn(II), Fe(III), Co(II)]. In the view of the synergistic effect of sonochemistry and photocatalysis, PCN-222(M) exhibited enhanced activities for Cr(VI) reduction compared with the photocatalytic process. Kinetic studies showed that apparent reaction rate constants in the sonophotocatalytic system of PCN-222(M) are 1.5−3.3 times higher than those in photocatalysis. Fluorescence and UV−vis absorption spectra measurements demonstrate that the sonophotocatalytic process promotes the transfer of photoinduced electrons from to Cr(VI), thus enhancing the catalytic performance. The innovative combination of porous MOFs and sonophotocatalytic technology might become a feasible strategy to improve the existing MOF-based photocatalytic systems.

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“…In recent times, the continual increase in the development of modern industries comes with attendant challenges: harmful effects caused by water pollution have become increasingly severe (Adegoke & Bello, 2015; Ahmad et al, 2019; Ahmad & Alrozi, 2010; Bello et al, 2015; Bulgariu et al, 2019; Dahri et al, 2016). Among several pollutants found in industrial sewages, dyes are the most undesirable both on esthetical and toxicological grounds (Ahmad et al, 2014; Bello, Adegoke, et al, 2017; Crini, 2015; Li et al, 2021; Ojedokun & Bello, 2017; Zhang et al, 2016). Dyes are organic compounds widely employed by textile, rubber, plastic, leather, paper, and cosmetic industries.…”

Section: Introductionmentioning

confidence: 99%

Trapping Rhodamine B dye using functionalized mango (Mangifera indica) pod

Bello

Adegoke

Inyinbor

et al. 2021

Water Environment Research

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The use of acid‐modified mango pod (AMMP) sorbent for removing Rhodamine B (Rh‐B) dye from aqueous media was investigated. Raw mango pod (RMP) and AMMP sorbents were characterized using scanning electron microscopy (SEM), energy dispersive X‐ray (EDX), powdered X‐ray diffractogram (PXRD), Fourier transform infrared (FTIR), point of zero charge pH (pHpzc), and Boehm titration (BT) techniques. Batch adsorption was employed to examine the influence of operational factors. Sorption kinetic parameters were calculated using pseudo‐first‐order, pseudo‐second‐order, Elovich, and intraparticle diffusion models. The pseudo‐second‐order model best fitted the adsorption kinetic data most with maximum correlation coefficient (R2 > 0.99). The process of the adsorption was controlled by both boundary layer and intraparticle diffusion mechanisms. Four isotherm models (Langmuir, Freundlich, Dubinin–Radushkevich, and Temkin) were utilized to analyze the equilibrium data at various temperatures. Freundlich model gave the best fit with the maximum regression (0.99), while the Langmuir isotherm model established a maximum monolayer adsorption capacity of 500 mg g−1. Thermodynamic parameters studied revealed that the interaction is spontaneous and endothermic in nature. The cost analysis of the current study provides convincing proof that AMMP is efficient for removing Rh‐B dye from solution by providing a saving of 225.2 USD/kg, which is eight times cheaper than commercial activated carbon. Consequently, the study revealed that AMMP is a viable, effective, and sustainable sorbent for Rhodamine B dye removal. Practitioner points The powdered X‐ray diffractogram (PXRD) showed the formation of new and intense peaks with the presence of highly organized crystalline structures on acid‐modified mango pod (AMMP). Surface morphology of AMMP showed well‐developed open surface pores required for effective adsorption of Rh B dye molecules. Economic feasibility of the present study showed that AMMP is more affordable than commercial activated carbon that costs USD 259.5/kg, thus translated to a saving cost of USD 225.2/kg and more than 7.5 times cheaper than the commercial activated carbon (CAC).

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Fabrication strategies and Cr(VI) elimination activities of the MOF-derivatives and their composites

Cited by 104 publications

References 199 publications

PdPbAg alloy NPs immobilized on reduced graphene oxide/In₂O₃ composites as highly active electrocatalysts for direct ethylene glycol fuel cells

PdPbAg alloy NPs immobilized on reduced graphene oxide/In₂O₃ composites as highly active electrocatalysts for direct ethylene glycol fuel cells

Visible-Light-Driven Sonophotocatalysis for the Rapid Reduction of Aqueous Cr(VI) Based on Zirconium–Porphyrin Metal–Organic Frameworks with csq Topology

Trapping Rhodamine B dye using functionalized mango (Mangifera indica) pod

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Fabrication strategies and Cr(VI) elimination activities of the MOF-derivatives and their composites

Cited by 104 publications

References 199 publications

PdPbAg alloy NPs immobilized on reduced graphene oxide/In2O3 composites as highly active electrocatalysts for direct ethylene glycol fuel cells

PdPbAg alloy NPs immobilized on reduced graphene oxide/In2O3 composites as highly active electrocatalysts for direct ethylene glycol fuel cells

Visible-Light-Driven Sonophotocatalysis for the Rapid Reduction of Aqueous Cr(VI) Based on Zirconium–Porphyrin Metal–Organic Frameworks with csq Topology

Trapping Rhodamine B dye using functionalized mango (Mangifera indica) pod

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Product

Resources

About

PdPbAg alloy NPs immobilized on reduced graphene oxide/In₂O₃ composites as highly active electrocatalysts for direct ethylene glycol fuel cells

PdPbAg alloy NPs immobilized on reduced graphene oxide/In₂O₃ composites as highly active electrocatalysts for direct ethylene glycol fuel cells