scholarly journals Cellulose-Based Materials for Water Remediation: Adsorption, Catalysis, and Antifouling

2021 ◽  
Vol 3 ◽  
Author(s):  
Hani Nasser Abdelhamid ◽  
Aji P. Mathew
Keyword(s):  
Functional Groups ◽  
High Performance ◽  
Antibacterial Agents ◽  
Organic Dyes ◽  
Cellulose Nanofibrils ◽  
Water Remediation ◽  
Advanced Technologies ◽  
Simple Processing ◽  
Metal Organic ◽  
As Adsorption

Cellulose-based materials have been advanced technologies that used in water remediation. They exhibit several advantages being the most abundant biopolymer in nature, high biocompatibility, and contain several functional groups. Cellulose can be prepared in several derivatives including nanomaterials such as cellulose nanocrystals (CNCs), cellulose nanofibrils (CNFs), and TEMPO (2,2,6,6-tetramethylpiperidine-1-oxyl radical)-mediated oxidized cellulose nanofibrils (TOCNF). The presence of functional groups such as carboxylic and hydroxyls groups can be modified or grafted with organic moieties offering extra functional groups customizing for specific applications. These functional groups ensure the capability of cellulose biopolymers to be modified with nanoparticles such as metal-organic frameworks (MOFs), graphene oxide (GO), silver (Ag) nanoparticles, and zinc oxide (ZnO) nanoparticles. Thus, they can be applied for water remediation via removing water pollutants including heavy metal ions, organic dyes, drugs, and microbial species. Cellulose-based materials can be also used for removing microorganisms being active as membranes or antibacterial agents. They can proceed into various forms such as membranes, sheets, papers, foams, aerogels, and filters. This review summarized the applications of cellulose-based materials for water remediation via methods such as adsorption, catalysis, and antifouling. The high performance of cellulose-based materials as well as their simple processing methods ensure the high potential for water remediation.

High-performance adsorption and separation of anionic dyes in water using a chemically stable graphene-like metal–organic framework

2017 ◽  
Vol 46 (31) ◽  
pp. 10197-10201 ◽  
Author(s):  
Jun-Jiao Li ◽  
Chong-Chen Wang ◽  
Hui-fen Fu ◽  
Jing-Rui Cui ◽  
Peng Xu ◽  
...  
Keyword(s):  
High Performance ◽  
Organic Dyes ◽  
Metal Organic Framework ◽  
Anionic Dyes ◽  
Rapid Separation ◽  
Selective Uptake ◽  
Metal Organic ◽  
Organic Framework

MOF BUC-17 was used to conduct efficiently selective uptake of organic dyes, and achieve rapid separation of CR and MB from their mixture.

scholarly journals Membrane adsorbers with ultrahigh metal-organic framework loading for high flux separations

2019 ◽  
Vol 10 (1) ◽  
Author(s):  
Hang Wang ◽  
Shuang Zhao ◽  
Yi Liu ◽  
Ruxin Yao ◽  
Xiaoqi Wang ◽  
...  
Keyword(s):  
High Performance ◽  
Organic Dyes ◽  
Metal Organic Framework ◽  
Water Flux ◽  
Mixed Matrix Membranes ◽  
High Porosity ◽  
Water Permeation ◽  
Cross Flow Filtration ◽  
Metal Organic ◽  
Membrane Adsorbers

Abstract Metal-organic frameworks (MOFs) with high porosity and designable functionality make it possible to access the merits of high permeability and selectivity. However, scalable fabrication methods to produce mixed matrix membranes (MMMs) with good flexibility and ultrahigh MOF loading are urgently needed yet largely unmet. Herein, we report a thermally induced phase separation-hot pressing (TIPS-HoP) strategy to roll-to-roll produce 10 distinct MOF-membranes (loadings up to 86 wt%). Ultrahigh-molecular-weight polyethylene interweaving the MOF particles contributes to their mechanical strength. Rejections (99%) of organic dyes with a water flux of 125.7 L m–2 h–1 bar–1 under cross-flow filtration mode. The micron-sized channels between the MOF particles translate into fast water permeation, while the porous MOFs reject solutes through rapid adsorption. This strategy paves ways for developing high-performance membrane adsorbers for crucial separation processes. As a proof-of-concept, the abilities of the membrane adsorbers for separating racemates and proteins have been demonstrated.

scholarly journals Characterization of high-performance organic dyes for dye-sensitized solar cell: a DFT/TDDFT study

2016 ◽  
Vol 94 (12) ◽  
pp. 1109-1118 ◽  
Author(s):  
Christopher Lambert ◽  
Yu Mao ◽  
Yanzhen Zheng ◽  
Xia Tao ◽  
P. Hu ◽  
...  
Keyword(s):  
Solar Cell ◽  
Molecular Orbital ◽  
High Performance ◽  
Organic Dyes ◽  
Cost Effective ◽  
Substitution Effect ◽  
Dye Sensitized Solar Cell ◽  
Metal Free ◽  
Dye Sensitized ◽  
Metal Organic

Dye-sensitized solar cell (DSSC) is currently a promising technology that makes solar energy efficient and cost-effective to harness. In DSSC, metal-free dyes such as indoline-containing D149 and D205 have been proven to be potential alternatives for traditional metal organic dyes. In this work, a DFT/TDDFT characterization for D149 and D205 was carried out using different functionals, including B3LYP, MPW1K, CAM–B3LYP, and PBE0. Three different conformers for D149 and four different conformers for D205 were identified and calculated in a vacuum. The performance of different functionals on calculating the maximum absorbance of the dyes in a vacuum and five common solvents (acetonitrile, chloroform, ethanol, methanol, and THF) were examined and compared to determine the suitable computational setting for predicting properties of these two dyes. Furthermore, deprotonated D149 and D205 in solvents were also considered, and the highest occupied molecular orbital (HOMO) and lowest unoccupied molecular orbital (LUMO) were calculated, which elucidates the substitution effect on the rhodanine ring of D149 and D205 dyes on their efficiency. Finally, D149 and D205 molecules were confirmed to be firmly anchored on ZnO surface by periodic DFT calculations. These results shed light on the design of new, highly efficient metal-free dyes.

Bio-based metal−organic aerogel (MOA) adsorbent for capturing tetracycline from aqueous solution

2021 ◽  
Author(s):  
Xiaofei Luo ◽  
Shuai Hu ◽  
Jingyou Yuan ◽  
Huan Yang ◽  
Shaoyun Shan ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
High Performance ◽  
Metal Organic ◽  
Organic Aerogel

The increasingly severe issues of antibiotic-induced pollution greatly stimulate the development of high-performance advanced adsorbents. In this contribution, a novel Fe-centered metal-organic aerogel (Fe-MOA) was synthesized through the use of...

A binuclear Co-based metal-organic framework towards efficient oxygen evolution reaction

2021 ◽  
Author(s):  
Ning Liu ◽  
Qiaoqiao Zhang ◽  
Jingqi Guan
Keyword(s):  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
High Performance ◽  
Low Cost ◽  
Metal Organic Framework ◽  
Research Interest ◽  
Metal Organic ◽  
Organic Framework

Seeking for low-cost and high-performance electrocatalysts for oxygen evolution reaction (OER) has drawn enormous research interest in the last few years. Reported herein is the topotactic construction of a binuclear...

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