Interface engineering of Ti-MOFs: Adsorption of anionic, cationic and neutral dyes in wastewater

Zhao, Yinghao; Zhou, Hualan; Song, Mengzhen; Xu, ZeXin; Sun, Zhonghua; Xu, Qianhui; Chen, Yanyan; Liao, Xiaoyuan

doi:10.1016/j.molstruc.2023.135268

Cited by 10 publications

(2 citation statements)

References 42 publications

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“…Among the various MOFs studied for dye removal, modi ed MOFs have shown great potential. For example, titanium-based MOFs have proven to be highly e cient adsorbents for the remediation of industrial dyes, including methylene blue (MB), methyl orange, and indigo [15]. A zinc (Zn) based-MOF exhibited highly selective adsorption of cationic dyes of methylene blue, and crystal violet in aqueous solutions.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of a new catalyst (Cu-MOF235) and its optimization for dye removal by wet-oxidation

Shadigooo,

Salimi,

Azimi

2024

Preprint

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This study focuses on enhancing the catalytic properties of copper-modified MOF235 (Cu-MOF235) in the wet-oxidation for methylene blue (MB) removal from aqueous solutions, while also optimizing process conditions. The impact of variables such as catalyst dosage (0.005–0.02 g), pH (4–10), temperature (20–40°C), reaction time (5–60 min), and catalyst type on dye removal is investigated. The SEM, EDX, FTIR, and XRD techniques were used to investigate the structural and physical characteristics of the synthesized catalyst. The statistical approach of Design of Experiments (DOE) systematically establishes the relationship between process factors and output. Increasing catalyst dosage boosts active sites for faster degradation or transformation of dye compounds, although diminishing returns may arise. Elevated temperatures reduce activation energy, increasing the MB removal rate. Cu-MOF235 surpasses MOF235 due to enhanced active sites, robust chemical interactions, surface modifications, potential synergies, catalytic degradation, and altered solution chemistry. The degradation of MB in the presence of Cu-MOF235 and aeration can proceed through a series of steps by adsorption, activation of oxygen, catalytic degradation, formation of intermediate products, complete degradation, and desorption. This research underscores the significant impact of catalyst modification on dye removal and offers insights into optimizing such processes.

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Section: Introductionmentioning

confidence: 99%

Synthesis of a new catalyst (Cu-MOF235) and its optimization for dye removal by wet-oxidation

Shadigooo,

Salimi,

Azimi

2024

Preprint

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show abstract

“…Membrane or nano-filtration can be costly to manufacture, energy-intensive, and require frequent filter replacement due to pore clogging, necessitating pressure for filtration [ 11 , 12 , 13 ]. Of these methods, adsorption is the most widely used industrially, with ongoing research into various dye adsorbents, including activated carbon [ 14 ], lignin-based products [ 15 , 16 , 17 ], chitosan [ 18 , 19 ], cellulose-based beads [ 20 ], Metal–Organic Framework (MOF) [ 21 , 22 , 23 , 24 ], and other thermopolymerized composites [ 25 , 26 ].…”

Section: Introductionmentioning

confidence: 99%

Highly Sustainable Dyes Adsorption in Wastewater Using Textile Filters Fabricated by UV Irradiation

Ryu,

Park,

Shim

et al. 2023

Polymers

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Vast amounts of dyeing wastewater released from the textile industry can not only cause water pollution but also have negative effects on the human body, such as skin irritation and respiratory diseases. Dye adsorption technology is necessary for the treatment of wastewater discharged from the dyeing industry and for environmental improvement. However, to remove dyeing wastewater, more energy and solvents are used to fabricate adsorbents, or excessive energy is used to filter dyeing wastewater out, resulting in more environmental pollution. Therefore, it is necessary to develop a method of filtering dyeing wastewater in a more environmentally friendly manner by minimizing the use of solvents and energy. In this study, we modified the surface of a textile substrate through UV irradiation to create a monomer capable of facilely bonding with dyes. Employing the UV photografting method, we were able to produce a dye adsorption filter in a more environmentally friendly manner, minimizing solvent usage and heat energy consumption required for absorbent synthesis. At a monomer concentration of 10%, the fabricated filter exhibited a dye removal efficiency of 97.34% after 24 h, all without the need for a pressure treatment or temperature increase. Moreover, it displayed an adsorption capacity of approximately 77.88 mg per 1 g of filter material.

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Optimization of organic polymer/g-C3N4 for selective oxidative HMF coupling H2O2 production: A complete metal-free approach

Song,

Si,

Han

et al. 2024

Fuel

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Interface engineering of Ti-MOFs: Adsorption of anionic, cationic and neutral dyes in wastewater

Cited by 10 publications

References 42 publications

Synthesis of a new catalyst (Cu-MOF235) and its optimization for dye removal by wet-oxidation

Synthesis of a new catalyst (Cu-MOF235) and its optimization for dye removal by wet-oxidation

Highly Sustainable Dyes Adsorption in Wastewater Using Textile Filters Fabricated by UV Irradiation

Optimization of organic polymer/g-C3N4 for selective oxidative HMF coupling H2O2 production: A complete metal-free approach

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