Alternating spin-and-spray electrospun scaffold membranes with fractionated MIL-101(Cr) adsorbent for high-performance single-pass dye adsorption process

Lim, Josh HuaiXun; Goh, Kunli; Ng, Daniel Yee Fan; Jiang, Xu; Chuah, Chong Yang; Chew, Jia Wei; Wang, Rong

doi:10.1016/j.cej.2022.137963

Cited by 14 publications

(9 citation statements)

References 78 publications

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“…The N2 adsorption isotherm also reveals the presence of micropores at two sizesone at 1.6 nm and the other at 2.1 nm. These micropore sizes are in good agreement with those reported in the literature [164,165,218], which suggest that the microporous adsorbent should be able to exert strong adsorbate-adsorbent interactions [46].…”

Section: Synthesis Of Mil-101(cr)supporting

confidence: 89%

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Development of novel electrospun nanofibrous scaffold with nanomaterials for target adsorption in different applications

Lim

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whom I have worked very closely throughout my PhD. Your guidance on numerous subject matters helped me immensely throughout my PhD. I would also like to extend my appreciation to my research colleagues, Wairen Keng, Clover Lim, and NEWRI's analytical team for their help in the lab and to my coursemates, Yujun, Anh, Dexter, Genevieve, Theodora, and Ganesh for keeping the laboratory and office lively throughout my PhD. Last but not least, I would like to express my deepest appreciation to my family and wife, Jolene, for the endless love, encouragement, and moral support they have shown me throughout my journey in pursuing the doctorate and also recharge in the holidays.

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Section: Synthesis Of Mil-101(cr)supporting

confidence: 89%

“…Our group had also recently fabricated a polyacrylonitrile (PAN) nanofibrous membrane to be used as scaffold to fractionate the loading of the MOF adsorbents in an alternate layer-by-layer design. The highest water flux obtained was >8000 L m -2 h -1 bar -1 with removal rates of >99% towards anionic organic dyes [218].…”

Section: Introductionmentioning

confidence: 97%

Development of novel electrospun nanofibrous scaffold with nanomaterials for target adsorption in different applications

Lim

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“…[27,28] For example, Zhou et al obtained HF-MIL-101(Cr) 660-700 nm in diameter, whereas their CH 3 COOLi-MIL-101(Cr) is 260-280 nm in diameter. [27] Figure 8a also shows that MIL-101(Cr) prepared using acetate salts [126][127][128][129][130][131][132][133][134] tends to be smaller than HF-MIL-101(Cr). Reportedly, acetate (CH 3 COO − ) ions form chromium trimeric acetate building units with Cr 3+ ions and the subsequent exchange between BDC 2− and the CH 3 COO − ions yields highly crystalline MIL-101(Cr) particles.…”

Section: Acetate Saltsmentioning

confidence: 96%

“…[27] Specifically, CH 3 COONa was the acetate salt of choice as it is less hazardous than CH 3 COOLi (Table 3). [113,[126][127][128][129][130][131][132][133][134][135][136][137] Despite providing the same monocarboxylate anion as CH 3 COOH, acetate salts form mildly alkaline solutions [27] and are less hazardous than CH 3 COOH (Table 3). Hence, acetate salts also aid the dissolution of H 2 BDC for high nucleation rates and slow crystal growth.…”

Section: Acetate Saltsmentioning

confidence: 99%

Elucidating Improvements to MIL‐101(Cr)’s Porosity and Particle Size Distributions based on Innovations and Fine‐Tuning in Synthesis Procedures

Wee

Chinnappan

Ramakrishna

2023

Adv Materials Inter

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Among the existing metal–organic frameworks (MOFs), MIL‐101(Cr) is renowned for its stability in air and water. As a result, MIL‐101(Cr) has numerous potential applications ranging from adsorptive cooling to catalysis. The industrial‐scale production of MIL‐101(Cr) is necessary before realizing these applications. Yet, there remain two main bottlenecks in preparing MIL‐101(Cr) in bulk: the toxicity of hydrofluoric acid (HF) used in conventional MIL‐101(Cr) synthesis and the challenge of ensuring that the as‐prepared MIL‐101(Cr) is highly porous with specific Brunauer–Emmett–Teller surface area (SBET) above 4000 m2 g−1. On the laboratory scale, MIL‐101(Cr) often presents SBET 2300–3500 m2 g−1. The synthesis and purification procedures often influence the yield, particle size, porosity, and other properties of MIL‐101(Cr). This critical review examines trends in MIL‐101(Cr) preparation procedures and the MOF's resulting properties to elucidate areas for improvement toward its real‐world applications. The purification processes for conventional HF‐based MIL‐101(Cr) whereby porosities vary despite the same synthesis approach are first investigated. Next, the reported additives for substituting HF and their influence on the resulting MIL‐101(Cr)’s porosity and particle size are discussed. The selection of additives may be application‐specific: exemplified in the examination of MIL‐101(Cr)’s preparation, its corresponding water sorption capacity, and desiccant‐related applications.

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“…The MIL-101(Cr) is composed of octahedral clusters of trimeric chromium(III) interlinked via 1,4-benzenedicarboxylates [21]. It has a very high Langmuir surface area of 5900 m 2 g −1 and thermal stability up to 250 • C (Figure 2b) [22]. Its large Langmuir surface area enables it to adsorb pollutants in water.…”

Section: Mil-101mentioning

confidence: 99%

Recent Progress of MIL MOF Materials in Degradation of Organic Pollutants by Fenton Reaction

Xiao

Shu²,

et al. 2023

Catalysts

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In recent years, environmental pollution has become more serious, especially the organic pollutants. Metal organic frameworks (MOFs) are promising materials used to degrade pollutants recently. Among them, Materials Institute Lavoisier frameworks (MILs) have been widely engaged due to their good stability and unique structural characteristics. This paper systematically analyses and summarizes the progress of MILs in degradation of organic pollutant by Fenton reaction in recent years. The MILs, especially four types of MILs, including MIL-100, MIL-101, MIL-88, and MIL-53, are first described and classified. Then, the common synthesis methods (hydrothermal synthesis, steam-assisted synthesis, and microwave-assisted synthesis) of MIL are summarized and compared. Modification and activation of MILs to obtain good degradation effect are also introduced and discussed. Finally, the applications of MILs in Fenton reaction are reviewed and their future development is prospected.

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Alternating spin-and-spray electrospun scaffold membranes with fractionated MIL-101(Cr) adsorbent for high-performance single-pass dye adsorption process

Cited by 14 publications

References 78 publications

Development of novel electrospun nanofibrous scaffold with nanomaterials for target adsorption in different applications

Development of novel electrospun nanofibrous scaffold with nanomaterials for target adsorption in different applications

Elucidating Improvements to MIL‐101(Cr)’s Porosity and Particle Size Distributions based on Innovations and Fine‐Tuning in Synthesis Procedures

Recent Progress of MIL MOF Materials in Degradation of Organic Pollutants by Fenton Reaction

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