Zr-based MOF @ carboxymethylated filter paper: Insight into construction and methylene blue removal mechanism

“…The obtained double-networks enhanced hollow ZIF-8 (DNHZIF-8) are tested for adsorption and photo-degradation of methylene blue, which is a typical cationic pollutant in water and is often present in wastewater from printing and dyeing industries. [36,37] The adsorption capacity towards methylene blue is about 127.5 mg/g within half an hour. Furthermore, the adsorbed methylene blue is degraded through irradiation by a 500 W xenon lamp.…”

Section: Introductionmentioning

confidence: 99%

“…Based on our hypothesis, we assemble robust polyphenol networks and PEG networks into ZIF‐8 particles as shown in Figure 1. The obtained double‐networks enhanced hollow ZIF‐8 (DNHZIF‐8) are tested for adsorption and photo‐degradation of methylene blue, which is a typical cationic pollutant in water and is often present in wastewater from printing and dyeing industries [36,37] . The adsorption capacity towards methylene blue is about 127.5 mg/g within half an hour.…”

Section: Introductionmentioning

confidence: 99%

Dual‐networks Enhanced Hollow ZIF‐8 Particles for Water Treatment

Xia

Cui

et al. 2023

ChemNanoMat

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Hollow ZIF-8 particles are promising materials for water treatment because of the high porosity and catalytic activities under photon irradiation. However, hollow ZIF-8 particles can easily degrade under harsh conditions due to the weak stability. Here, we synthesize hollow ZIF-8 particles with polyphenol and polyethylene glycol networks embedded. The multiple interactions among the ZIF-8 frameworks and the networks increase the mechanical and chemical stability of the hollow ZIF-8 particles as suggested by a series of spectra. Uptake of methylene blue about 128 mg/g by the hollow particles is realized. Furthermore, hydroxyl or superoxide radicals for degradation of the adsorbed methylene blue are effectively generated through irradiation of the hollow ZIF-8 particles. In a water treatment test, the model pollute with a concentration of 50 mg/L is completely removed within half an hour. The performance of the recycled hollow ZIF-8 particles is proved to be significant, indicating the practical potential of the material.

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“…Several techniques, including biodegradation [2], filtration [3], and photocatalyst degradation [4], have been applied for the removal of dyes from the wastewater. Among those techniques, adsorption removal of dyes by carbonaceous adsorbent, derived from natural biomass and industrial by-products, has the advantages of simple operation and low-cost [5].…”

Section: Introductionmentioning

confidence: 99%

Silk Sericin Enrichment through Electrodeposition and Carbonous Materials for the Removal of Methylene Blue from Aqueous Solution

Zhang

Chen

et al. 2022

IJMS

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The recycling and reuse of biomass waste for the preparation of carbon-based adsorbents is a sustainable development strategy that has a positive environmental impact. It is well known that a large amount of silk sericin (SS) is dissolved in the wastewater from the silk industry. Utilizing the SS instead of discharging it into the environment without further treatment would reduce environmental and ecological problems. However, effective enrichment of the SS from the aqueous solution is a challenge. Here, with the help of carboxymethyl chitosan (CMCS), which can form a gel structure under low voltage, an SS/CMCS hydrogel with SS as the major component was prepared via electrodeposition at a 3 V direct-current (DC) voltage for five minutes. Following a carbonization process, an SS-based adsorbent with good performance for the removal of methylene blue (MB) from an aqueous solution was prepared. Our results reveal that the SS/CMCS hydrogel maintains a porous architecture before and after carbonization. Such structure provides abundant adsorption sites facilitating the adsorption of MB molecules, with a maximum adsorptive capacity of 231.79 mg/g. In addition, it suggests that the adsorption is an exothermic process, has a good fit with the Langmuir model, and follows the intra-particle diffusion model. The presented work provides an economical and feasible path for the treatment of wastewater from dyeing and printing.

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Zr-based MOF @ carboxymethylated filter paper: Insight into construction and methylene blue removal mechanism

Cited by 13 publications

References 77 publications

A facile synthesis of a Ce-based MOF at room temperature for effective adsorption of methylene blue

A facile synthesis of a Ce-based MOF at room temperature for effective adsorption of methylene blue

Dual‐networks Enhanced Hollow ZIF‐8 Particles for Water Treatment

Silk Sericin Enrichment through Electrodeposition and Carbonous Materials for the Removal of Methylene Blue from Aqueous Solution

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