scholarly journals Hydrogenation/oxidation induced efficient reversible color switching between methylene blue and leuco-methylene blue

RSC Advances ◽  
2017 ◽  
Vol 7 (48) ◽  
pp. 30080-30085 ◽  
Author(s):  
Ya-Nan Liu ◽  
Xiao Zhou ◽  
Xin Wang ◽  
Kuang Liang ◽  
Zheng-Kun Yang ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Cycling Performance ◽  
Switching System ◽  
One Pot ◽  
Color Switching

A novel reversible color switching system based on one-pot hydrogenation/oxygenation reactions, and with excellent cycling performance and high switching rates as an oxygen indicator.

One step synthesis of silane-capped copper clusters as a sensitive optical probe and efficient catalyst for reversible color switching

RSC Advances ◽  
2016 ◽  
Vol 6 (45) ◽  
pp. 38897-38905 ◽  
Author(s):  
Shaochen Zhou ◽  
Yingxuan Li ◽  
Fu Wang ◽  
Chuanyi Wang
Keyword(s):  
Methylene Blue ◽  
Redox Reactions ◽  
Optical Probe ◽  
Switching System ◽  
Efficient Catalyst ◽  
Copper Clusters ◽  
Highly Efficient ◽  
One Step ◽  
Color Switching

Luminescent silane-functionalized copper clusters are developed as a highly efficient catalyst to build up a recyclable and photoreversible color switching system based on the redox reactions of methylene blue.

Highly efficient redox-driven reversible color switching of dye molecules via hydrogenation/oxygenation

2017 ◽  
Vol 53 (2) ◽  
pp. 360-363 ◽  
Author(s):  
Yi-Fan Jiang ◽  
Cheng-Zong Yuan ◽  
Xiao Zhou ◽  
Hong-Li Guo ◽  
Ya-Nan Liu ◽  
...  
Keyword(s):  
Switching System ◽  
Dye Molecules ◽  
One Pot ◽  
Highly Efficient ◽  
Color Switching

A novel color switching system based on one-pot hydrogenation/oxygenation reactions, which could find applications in rewritable papers, security and so on, is reported.

scholarly journals Straightforward Synthesis of Mn3O4/ZnO/Eu2O3-Based Ternary Heterostructure Nano-Photocatalyst and Its Application for the Photodegradation of Methyl Orange and Methylene Blue Dyes

Molecules ◽  
2021 ◽  
Vol 26 (15) ◽  
pp. 4661
Author(s):  
Jayachamarajapura Pranesh Shubha ◽  
Haralahalli Shivappa Savitha ◽  
Syed Farooq Adil ◽  
Mujeeb Khan ◽  
Mohammad Rafe Hatshan ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Methyl Orange ◽  
Irradiation Time ◽  
Solar Irradiation ◽  
Anionic Dyes ◽  
One Pot ◽  
Sunlight Irradiation ◽  
Ft Ir ◽  
Degradation Activity ◽  
Ecological Applications

Zinc oxide-ternary heterostructure Mn3O4/ZnO/Eu2O3 nanocomposites were successfully prepared via waste curd as fuel by a facile one-pot combustion procedure. The fabricated heterostructures were characterized utilizing XRD, UV–Visible, FT-IR, FE-SEM, HRTEM and EDX analysis. The photocatalytic degradation efficacy of the synthesized ternary nanocomposite was evaluated utilizing model organic pollutants of methylene blue (MB) and methyl orange (MO) in water as examples of cationic dyes and anionic dyes, respectively, under natural solar irradiation. The effect of various experimental factors, viz. the effect of a light source, catalyst dosage, irradiation time, pH of dye solution and dye concentration on the photodegradation activity, was systematically studied. The ternary Mn3O4/ZnO/Eu2O3 photocatalyst exhibited excellent MB and MO degradation activity of 98% and 96%, respectively, at 150 min under natural sunlight irradiation. Experiments further conclude that the fabricated nanocomposite exhibits pH-dependent photocatalytic efficacy, and for best results, concentrations of dye and catalysts have to be maintained in a specific range. The prepared photocatalysts are exemplary and could be employed for wastewater handling and several ecological applications.

scholarly journals Efficient Adsorption of Methylene Blue by Porous Biochar Derived from Soybean Dreg Using a One-Pot Synthesis Method

Molecules ◽  
2021 ◽  
Vol 26 (3) ◽  
pp. 661
Author(s):  
Zhiwei Ying ◽  
Xinwei Chen ◽  
He Li ◽  
Xinqi Liu ◽  
Chi Zhang ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Methylene Blue ◽  
Photoelectron Spectroscopy ◽  
Synthesis Method ◽  
Urban Pollution ◽  
Maximum Adsorption Capacity ◽  
One Pot ◽  
Average Pore ◽  
X Ray ◽  
Isotherm Equation

Soybean dreg is a by-product of soybean products production, with a large consumption in China. Low utilization value leads to random discarding, which is one of the important sources of urban pollution. In this work, porous biochar was synthesized using a one-pot method and potassium bicarbonate (KHCO3) with low-cost soybean dreg (SD) powder as the carbon precursor to investigating the adsorption of methylene blue (MB). The prepared samples were characterized with scanning electron microscopy (SEM), transmission electron microscopy (TEM), elemental analyzer (EA), Brunauer-Emmett-Teller (BET), X-ray diffractometer (XRD), Raman spectroscopy (Raman), Fourier transform infrared spectrometer (FTIR), and X-ray photoelectron spectroscopy (XPS). The obtained SDB-K-3 showed a high specific surface area of 1620 m2 g−1, a large pore volume of 0.7509 cm3 g−1, and an average pore diameter of 1.859 nm. The results indicated that the maximum adsorption capacity of SDB-K-3 to MB could reach 1273.51 mg g−1 at 318 K. The kinetic data were most consistent with the pseudo-second-order model and the adsorption behavior was more suitable for the Langmuir isotherm equation. This study demonstrated that the porous biochar adsorbent can be prepared from soybean dreg by high value utilization, and it could hold significant potential for dye wastewater treatment in the future.

One-Pot Syntheses of Porous Hollow Silica Nanoreactors Encapsulating Rare Earth Oxide Nanoparticles for Methylene Blue Degradation

2019 ◽  
Vol 58 (9) ◽  
pp. 3726-3734 ◽  
Author(s):  
Pengyao Xu ◽  
Kaijie Li ◽  
Hongbo Yu ◽  
Martien A. Cohen Stuart ◽  
Junyou Wang ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Rare Earth ◽  
Rare Earth Oxide ◽  
Oxide Nanoparticles ◽  
One Pot ◽  
Hollow Silica ◽  
Methylene Blue Degradation

scholarly journals Large-scale synthesis of carbon dots/TiO2 nanocomposites for the photocatalytic color switching system

2019 ◽  
Vol 1 (5) ◽  
pp. 1819-1825 ◽  
Author(s):  
Aiwu Wang ◽  
Xufen Xiao ◽  
Cangtao Zhou ◽  
Fucong Lyu ◽  
Li Fu ◽  
...  
Keyword(s):  
Carbon Dots ◽  
Large Scale ◽  
Switching System ◽  
System P ◽  
Large Scale Synthesis ◽  
Color Switching

In view of the easy control and contactless spatial nature of light, the photoreversible color switching system has attracted tremendous attention.

scholarly journals One-pot preparation of poly(styrene-co-divinylbenzene)/silver nanoparticles composite microspheres with tunable porosity and their catalytic degradation of methylene blue in aqueous solution

RSC Advances ◽  
2017 ◽  
Vol 7 (79) ◽  
pp. 50176-50187 ◽  
Author(s):  
Xiaohuan Ji ◽  
Franziska Griesing ◽  
Ruijia Yan ◽  
Bin Sun ◽  
Werner Pauer ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Methylene Blue ◽  
Silver Nanoparticles ◽  
Silver Nanoparticle ◽  
Catalytic Degradation ◽  
One Pot ◽  
Composite Microspheres ◽  
Polymerization Method ◽  
Porous Poly

Porous poly(styrene-co-divinylbenzene)/silver nanoparticle composite spheres with tunable porosity were synthesized by seed swelling polymerization method and show a great catalytic degradation of methylene blue within NaBH4.

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