scholarly journals Magnetic nanocomposite based on polyacrylic acid and carboxylated cellulose nanocrystal for the removal of cationic dye

RSC Advances ◽  
2020 ◽  
Vol 10 (20) ◽  
pp. 11945-11956 ◽  
Author(s):  
Rajib Samadder ◽  
Nahida Akter ◽  
Abinash Chandra Roy ◽  
Md. Mosfeq Uddin ◽  
Md. Jahangir Hossen ◽  
...  
Keyword(s):  
Polyacrylic Acid ◽  
Cellulose Nanocrystals ◽  
Low Cost ◽  
Magnetic Nanocomposite ◽  
Cellulose Nanocrystal ◽  
Cationic Dyes ◽  
Cationic Dye ◽  
Highly Efficient

A low-cost, highly efficient, and recyclable magnetic nanocomposite has been developed from polyacrylic acid and carboxylated cellulose nanocrystals for the removal of cationic dyes from the wastewater.

Treatment of Cationic Dye Wastewater with Hybrid Sorbent Generated by Anionic Dye Wastewater Hybridization with Calcium Fluoride

2013 ◽  
Vol 652-654 ◽  
pp. 1571-1579
Author(s):  
Dan Hua Zhao ◽  
Xiu Lian Zhang ◽  
Wei Yin ◽  
Xiao Jun Liu
Keyword(s):  
Ionic Strength ◽  
Calcium Fluoride ◽  
Low Cost ◽  
Methyl Violet ◽  
Cationic Dyes ◽  
Maximum Adsorption Capacity ◽  
Cationic Dye ◽  
Dye Wastewater ◽  
Anionic Dye ◽  
Hybrid Sorbent

CaF2/AG25 (CFA) hybrid sorbent formed by hybrid reaction with activated calcium fluoride of low cost and anionic dye wastewater-Acid Green 25 (AG25) was used for the treatment of cationic dye wastewater. The adsorption of two cationic dyes methyl violet (MV) and Neutral Red (NR) from aqueous solutions was examined using a batch sorption technique. The effects of time, pH, ionic strength and temperature on the adsorption were also examined. It exhibited a faster adsorption to cationic dyes and hardly affected in pH over 3.5, ionic strength low 0.04 mol/L and temperature between 20 oC and 60 oC. The adsorption behavior of the NR and MV on CFA is in good agreement with the Langmiur isotherms model with the correlation coefficients of R 0.9948 for NR and 0.9992 for MV and the maximum adsorption capacity of NR (39.22 mg/g) and MV (48.78 mg/g). Finally, this sorbent was used in treatment of two practical cationic dye wastewaters with satisfactory results.

Highly efficient and sustainable alginate/carboxylated lignin hybrid beads as adsorbent for cationic dye removal

2021 ◽  
pp. 104839
Author(s):  
Jong-Chan Kim ◽  
Jungkyu Kim ◽  
Jinseok Park ◽  
Jung-Kwon Oh ◽  
In-Gyu Choi ◽  
...  
Keyword(s):  
Dye Removal ◽  
Cationic Dye ◽  
Highly Efficient

MOF-derived M-OOH with rich oxygen defects by in-situ electro-oxidation reconstitution for highly efficient oxygen evolution reaction

2021 ◽  
Author(s):  
Zhikai Shi ◽  
Zebin Yu ◽  
Ronghua Jiang ◽  
Jun Huang ◽  
Yanping Hou ◽  
...  
Keyword(s):  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Energy Production ◽  
Low Cost ◽  
Highly Efficient ◽  
Oxygen Defects ◽  
Electro Oxidation

The oxygen evolution reaction (OER) is an important half-reaction in the field of energy production. However, how effectively, simply, and greenly to prepare low-cost OER electrocatalysts remains a problem. Herein,...

scholarly journals Concentric chiral nematic polymeric fibers from cellulose nanocrystals

2021 ◽  
Author(s):  
Arash Momeni ◽  
Christopher M. Walters ◽  
Yi-Tao Xu ◽  
Wadood Y. Hamad ◽  
Mark J. MacLachlan
Keyword(s):  
Cellulose Nanocrystals ◽  
Liquid Crystalline ◽  
Capillary Tube ◽  
Single Domain ◽  
Cellulose Nanocrystal ◽  
Polymeric Fibers ◽  
Chiral Nematic ◽  
Chiral Nematic Structure ◽  
Crystalline Suspension

A cellulose nanocrystal liquid crystalline suspension was mixed with monomers and confined to a capillary tube. After photopolymerization, a fiber with a single-domain concentric chiral nematic structure throughout the length of the fiber was obtained.

Embedding metal foam into metal–organic framework monoliths for triggering a highly efficient release of adsorbed atmospheric water by localized eddy current heating

2021 ◽  
Author(s):  
Yingle Tao ◽  
Qiangqiang Li ◽  
Qiannan Wu ◽  
Haiqing Li
Keyword(s):  
Thermal Insulation ◽  
Eddy Current ◽  
Energy Efficient ◽  
Metal Foam ◽  
Low Cost ◽  
Metal Organic Framework ◽  
Atmospheric Water ◽  
Highly Efficient ◽  
Metal Organic ◽  
Eddy Current Heating

Localized eddy current heating delivered by metal foam embedded in a MOF monolith provides a novel, low-cost, and energy efficient way to overcome the thermal insulation nature of MOF monoliths and realize their highly efficient regenerations.

scholarly journals Color-Variable Photodynamic Antimicrobial Wool/Acrylic Blended Fabrics

Materials ◽  
2020 ◽  
Vol 13 (18) ◽  
pp. 4141
Author(s):  
Tingting Wang ◽  
Wangbingfei Chen ◽  
Tingting Dong ◽  
Zihao Lv ◽  
Siming Zheng ◽  
...  
Keyword(s):  
Low Cost ◽  
Pathogen Transmission ◽  
Cationic Dyes ◽  
Light Illumination ◽  
Antibacterial Studies ◽  
Wool Fibers ◽  
Visible Light Illumination ◽  
Potential Applications ◽  
Dyed Fabrics ◽  
Acrylic Fibers

Towards the goal of developing scalable, economical and effective antimicrobial textiles to reduce infection transmission, here we prepared color-variable photodynamic materials comprised of photosensitizer (PS)-loaded wool/acrylic (W/A) blends. Wool fibers in the W/A blended fabrics were loaded with the photosensitizer rose bengal (RB), and the acrylic fibers were dyed with a variety of traditional cationic dyes (cationic yellow, cationic blue and cationic red) to broaden their color range. Investigations on the colorimetric and photodynamic properties of a series of these materials were implemented through CIELab evaluation, as well as photooxidation and antibacterial studies. Generally, the photodynamic efficacy of these dual-dyed fabrics was impacted by both the choice, and how much of the traditional cationic dye was employed in the dyeing of the W/A fabrics. When compared with the PS-only singly-dyed material, RB-W/A, that showed a 99.97% (3.5 log units; p = 0.02) reduction of Staphylococcus aureus under visible light illumination (λ ≥ 420 nm, 60 min), the addition of cationic dyes led to a slight decrease in the photoinactivation ability of the dual-dyed fabrics, but was still able to achieve a 99.3% inactivation of S. aureus. Overall, our findings demonstrate the feasibility and potential applications of low cost and color variable RB-loaded W/A blended fabrics as effective self-disinfecting textiles against pathogen transmission.

Conductive 3D sponges for affordable and highly-efficient water purification

Nanoscale ◽  
2018 ◽  
Vol 10 (10) ◽  
pp. 4771-4778 ◽  
Author(s):  
Yanbiao Liu ◽  
Fang Li ◽  
Qin Xia ◽  
Jiawei Wu ◽  
Jianshe Liu ◽  
...  
Keyword(s):  
Organic Pollutants ◽  
Water Purification ◽  
Low Cost ◽  
Highly Efficient ◽  
Electro Oxidation ◽  
Conductive Nanomaterials ◽  
Filtration Device

We developed a low-cost method to achieve efficient organic pollutants degradation by incorporating conductive nanomaterials to assist electro-oxidation, leading to an efficient conductive nano-sponge filtration device.

Atomic Heterointerface Engineering Breaks Activity Limitation of Electrocatalysts and Promises Highly-Efficient Alkaline Water Splitting

2021 ◽  
Author(s):  
Qiucheng Xu ◽  
Jiahao Zhang ◽  
Haoxuan Zhang ◽  
Liyue Zhang ◽  
Ling Chen ◽  
...  
Keyword(s):  
Water Splitting ◽  
Anion Exchange ◽  
Low Cost ◽  
Water Electrolysis ◽  
Anion Exchange Membrane ◽  
Alkaline Water Electrolysis ◽  
Green Electricity ◽  
Alkaline Water ◽  
Highly Efficient ◽  
Exchange Membrane

Alkaline water splitting, especially the anion-exchange-membrane based water electrolysis, is an attractive way for low-cost and scalable H2 production. Green electricity-driven alkaline water electrolysis is requested to develop highly-efficient electrocatalysts...

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