Nanoscale zeolitic imidazole framework-90: selective, sensitive and dual-excitation ratiometric fluorescent detection of hazardous Cr(vi) anions in aqueous media

2018 ◽  
Vol 42 (15) ◽  
pp. 12549-12556 ◽  
Author(s):  
Hong-Guang Jin ◽  
Weibang Zong ◽  
Lin Yuan ◽  
Xiao-Bing Zhang
Keyword(s):  
Aqueous Solution ◽  
Aqueous Media ◽  
Fluorescent Detection

Toxic Cr(vi) anions sensing in aqueous solution has been achieved by virtue of fluorescent nanoscale ZIF-90 and RhB@ZIF-90.

A highly sensitive benzimidazole-based chemosensor for the colorimetric detection of Fe(ii) and Fe(iii) and the fluorometric detection of Zn(ii) in aqueous media

RSC Advances ◽  
2016 ◽  
Vol 6 (66) ◽  
pp. 61505-61515 ◽  
Author(s):  
Yong Sung Kim ◽  
Jae Jun Lee ◽  
Sun Young Lee ◽  
Tae Geun Jo ◽  
Cheal Kim
Keyword(s):  
Aqueous Solution ◽  
Colorimetric Detection ◽  
Aqueous Media ◽  
Fluorescent Detection ◽  
Fluorometric Detection ◽  
Highly Sensitive

A selective chemosensor 1 was developed for the colorimetric detection of Fe2+/3+ and the fluorescent detection of Zn2+ in aqueous solution.

Highly efficient and selective photocatalytic CO2 to CO conversion in aqueous solution

2020 ◽  
Vol 56 (27) ◽  
pp. 3851-3854 ◽  
Author(s):  
Xiaomin Chai ◽  
Hai-Hua Huang ◽  
Huiping Liu ◽  
Zhuofeng Ke ◽  
Wen-Wen Yong ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Photocatalytic Performance ◽  
Aqueous Media ◽  
Highly Efficient ◽  
Co Conversion

A Co-based complex displayed the highest photocatalytic performance for CO2 to CO conversion in aqueous media.

scholarly journals Double-Cross-Linked Networks Based on Methacryloyl Mucin

Polymers ◽  
2021 ◽  
Vol 13 (11) ◽  
pp. 1706
Author(s):  
Elena Olăreț ◽  
Brîndușa Bălănucă ◽  
Andra Mihaela Onaș ◽  
Jana Ghițman ◽  
Horia Iovu ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Aqueous Solution ◽  
Chemical Modification ◽  
Structural Modification ◽  
Aqueous Media ◽  
Cross Linking ◽  
Ph Values ◽  
Acid Aqueous Solution ◽  
Reaction Media ◽  
Double Cross

Mucin is a glycoprotein with proven potential in the biomaterials field, but its use is still underexploited for such applications. The present work aims to produce a synthesis of methacryloyl mucin single-network (SN) hydrogels and their double-cross-linked-network (DCN) counterparts. Following the synthesis of the mucin methacryloyl derivative, various SN hydrogels are prepared through the photopolymerization of methacrylate bonds, using reaction media with different pH values. The SN hydrogels are converted into DCN systems via supplementary cross-linking in tannic acid aqueous solution. The chemical modification of mucin is described, and the obtained product is characterized; the structural modification of mucin is assessed through FTIR spectroscopy, and the circular dichroism and the isoelectric point of methacryloyl mucin is evaluated. The affinity for aqueous media of both SN and DCN hydrogels is estimated, and the mechanical properties of the systems are assessed, both at macroscale through uniaxial compression and rheology tests and also at microscale through nanoindentation tests.

Colorimetric and fluorescent detection of biological thiols in aqueous solution

2013 ◽  
Vol 24 (2) ◽  
pp. 96-98 ◽  
Author(s):  
Yin-Hui Li ◽  
Jin-Feng Yang ◽  
Chang-Hui Liu ◽  
Ji-Shan Li ◽  
Rong-Hua Yang
Keyword(s):  
Aqueous Solution ◽  
Fluorescent Detection

scholarly journals Towards the fluorogenic detection of peroxide explosives through host–guest chemistry

2018 ◽  
Vol 5 (4) ◽  
pp. 171787 ◽  
Author(s):  
Estefanía Almenar ◽  
Ana M. Costero ◽  
Pablo Gaviña ◽  
Salvador Gil ◽  
Margarita Parra
Keyword(s):  
Aqueous Media ◽  
Sensory Systems ◽  
Fluorescent Detection ◽  
Cyclodextrin Derivatives ◽  
Triacetone Triperoxide ◽  
Diacetone Diperoxide ◽  
Guest Chemistry

Two dansyl-modified β-cyclodextrin derivatives ( 1 and 2 ) have been synthesized as host–guest sensory systems for the direct fluorescent detection of the peroxide explosives diacetone diperoxide (DADP) and triacetone triperoxide (TATP) in aqueous media. The sensing is based on the displacement of the dansyl moiety from the cavity of the cyclodextrin by the peroxide guest resulting in a decrease of the intensity of the fluorescence of the dye. Both systems showed similar fluorescent responses and were more sensitive towards TATP than DADP.

A highly sensitive probe based on spiropyran for colorimetric and fluorescent detection of thiophenol in aqueous media

2020 ◽  
Vol 175 ◽  
pp. 108154 ◽  
Author(s):  
Linlin Yang ◽  
Yanping Li ◽  
Huaxiong Song ◽  
Haihua Zhang ◽  
Nan Yang ◽  
...  
Keyword(s):  
Aqueous Media ◽  
Fluorescent Detection ◽  
Highly Sensitive

scholarly journals The Equilibrium, Kinetics, and Thermodynamics Studies of the Sorption of Methylene Blue from Aqueous Solution Using Pulverized Raw Macadamia Nut Shells

2020 ◽  
Vol 2020 ◽  
pp. 1-10
Author(s):  
Joshua N. Edokpayi ◽  
Samson O. Alayande ◽  
Ahmed Adetoro ◽  
John O. Odiyo
Keyword(s):  
Aqueous Solution ◽  
Methylene Blue ◽  
Surface Area ◽  
Low Cost ◽  
Aqueous Media ◽  
Group Analysis ◽  
Second Order ◽  
Isotherm Models ◽  
Macadamia Nut ◽  
Pseudo Second Order

In this study, the potential for pulverized raw macadamia nut shell (MNS) for the sequestration of methylene blue from aqueous media was assessed. The sorbent was characterized using scanning electron microscopy for surface morphology, functional group analysis was performed with a Fourier-transform infrared spectrometer (FT-IR), and Brunauer–Emmett–Teller (BET) isotherm was used for surface area elucidation. The effects of contact time, sorbent dosage, particle size, pH, and change in a solution matrix were studied. Equilibrium data were fitted using Temkin, Langmuir, and Freundlich adsorption isotherm models. The sorption kinetics was studied using the Lagergren pseudo-first-order, pseudo-second-order, Elovich, and intraparticle diffusion models. The feasibility of the study was established from the thermodynamic studies. A surface area of 2.763 m2/g was obtained. The equilibrium and kinetics of sorption was best described by the Langmuir and the pseudo-second-order models, respectively. The sorption process was spontaneous (−ΔG0=28.72−31.77 kJ/mol) and endothermic in nature (ΔH0=17.45 kJ/mol). The positive value of ΔS0 (0.15 kJ/molK) implies increased randomness of the sorbate molecules at the surface of the sorbent. This study presents sustainable management of wastewater using MNS as a potential low-cost sorbent for dye decontamination from aqueous solution.

Sign in / Sign up

Export Citation Format

Share Document