Polyacrylic acid@zeolitic imidazolate framework-8 nanoparticles for detection and absorptive removal of cyanide from aqueous media with high efficiency

2021 ◽  
pp. 126358
Author(s):  
Anshu Kumar ◽  
Debdeep Maity ◽  
Gaurav Vyas ◽  
Madhuri Bhatt ◽  
Shreya Bhatt ◽  
...  
Keyword(s):  
Polyacrylic Acid ◽  
High Efficiency ◽  
Aqueous Media ◽  
Zeolitic Imidazolate Framework

scholarly journals pH-triggered degradation and release of doxorubicin from zeolitic imidazolate framework-8 (ZIF8) decorated with polyacrylic acid

RSC Advances ◽  
2021 ◽  
Vol 11 (16) ◽  
pp. 9222-9234
Author(s):  
Vy Anh Tran ◽  
Sang-Wha Lee
Keyword(s):  
Drug Release ◽  
Polyacrylic Acid ◽  
Acidic Ph ◽  
Zeolitic Imidazolate Framework ◽  
Triggered Drug Release

The ZIF8–Dox@PAA nanocarrier demonstrated pH-triggered drug release through the detachment of the PAA layer along with the destruction of ZIF8 framework in acidic pH environment.

scholarly journals Bis-NHC–Ag/Pd(OAc)2 Catalytic System Catalyzed Transfer Hydrogenation Reaction

Catalysts ◽  
2020 ◽  
Vol 11 (1) ◽  
pp. 8
Author(s):  
Hui-Ju Chen ◽  
Chien-Cheng Chiu ◽  
Tsui Wang ◽  
Dong-Sheng Lee ◽  
Ta-Jung Lu
Keyword(s):  
Functional Groups ◽  
Catalytic System ◽  
High Efficiency ◽  
Aqueous Media ◽  
Hydrogenation Reaction ◽  
Transfer Hydrogenation ◽  
Terminal Alkynes ◽  
Wide Range ◽  
Transfer Hydrogenation Reaction

The bis-NHC–Ag/Pd(OAc)2 catalytic system (NHC = N-heterocyclic carbene), a combination of bis-NHC–Ag complex and Pd(OAc)2, was found to be a smart catalyst in the Pd-catalyzed transfer hydrogenation of various functionalized arenes and internal/terminal alkynes. The catalytic system demonstrated high efficiency for the reduction of a wide range of various functional groups such as carbonyls, alkynes, olefins, and nitro groups in good to excellent yields and high chemoselectivity for the reduction of functional groups. In addition, the protocol was successfully exploited to stereoselectivity for the transformation of alkynes to alkenes in aqueous media under air. This methodology successfully provided an alternative useful protocol for reducing various functional groups and a simple operational protocol for transfer hydrogenation.

N-Doped Carbon Materials as Heterogeneous Catalysts for High Efficiency Isomerization Glucose to Fructose in Aqueous Media

2019 ◽  
Vol 150 (2) ◽  
pp. 493-504 ◽  
Author(s):  
Yong Wang ◽  
Jinghua Wang ◽  
Yuan Zhang ◽  
Feng Song ◽  
Yujiao Xie ◽  
...  
Keyword(s):  
Heterogeneous Catalysts ◽  
High Efficiency ◽  
Carbon Materials ◽  
Aqueous Media

scholarly journals Synthesis of amphiphilic copolymers based on acrylic acid, fluoroalkyl acrylates and n-butyl acrylate in organic, aqueous–organic, and aqueous media via RAFT polymerization

RSC Advances ◽  
2017 ◽  
Vol 7 (39) ◽  
pp. 24522-24536 ◽  
Author(s):  
N. S. Serkhacheva ◽  
O. I. Smirnov ◽  
A. V. Tolkachev ◽  
N. I. Prokopov ◽  
A. V. Plutalova ◽  
...  
Keyword(s):  
Acrylic Acid ◽  
Polyacrylic Acid ◽  
Self Assembly ◽  
Butyl Acrylate ◽  
Raft Polymerization ◽  
Aqueous Media ◽  
Amphiphilic Copolymers

Hydrophilic and amphiphilic polymeric trithiocarbonates based on polyacrylic acid are able to provide polymerization-induced self-assembly in copolymerization of butyl and fluoroalkyl acrylates.

scholarly journals High Performance of Simple Organic Phosphorescence Host-Guest Materials

2020 ◽  
Author(s):  
Yunsheng Wang ◽  
Heqi Gao ◽  
Jie Yang ◽  
Manman Fang ◽  
Dan Ding ◽  
...  
Keyword(s):  
High Performance ◽  
High Efficiency ◽  
Aqueous Media ◽  
Theoretical Research ◽  
Long Afterglow ◽  
Afterglow Time ◽  
New Strategy ◽  
Long Lifetime ◽  
First Time ◽  
Design Guidance

<p><b>The study of purely organic room-temperature phosphorescence (RTP) has drawn </b><b>increasing attention </b><b>because of its considerable theoretical research and practical application </b><b>value</b><b>. Currently, organic RTP materials with both high efficiency (<i>Ф</i><sub>P</sub> > 20%) and a long lifetime (<i>τ</i><sub>P</sub> > 10 s) in air are still </b><b>scarce due to</b><b> the lack of related design guidance. Here, we </b><b>report</b><b> a new strategy to increase the phosphorescence performance of organic materials by integrating the RTP host and RTP guest in one doping system to form </b><b>a </b><b>triplet exciplex. With these materials, the high-contrast </b><b>labelling</b><b> of tumours in living mice and encrypted patterns in thermal printing are both successfully realized for the first time</b><b> by</b><b> taking </b><b>advantage of both</b><b> the long afterglow time (up to 25 min in aqueous media) and high phosphorescence efficiency (43%).</b></p>

scholarly journals A Novel Non-Enzymatic Electrochemical Hydrogen Peroxide Sensor Based on a Metal-Organic Framework/Carbon Nanofiber Composite

Molecules ◽  
2018 ◽  
Vol 23 (10) ◽  
pp. 2552 ◽  
Author(s):  
Yijun Fu ◽  
Jiamu Dai ◽  
Yan Ge ◽  
Yu Zhang ◽  
Huizhen Ke ◽  
...  
Keyword(s):  
High Efficiency ◽  
Carbon Nanofiber ◽  
Synergistic Effects ◽  
Metal Organic Framework ◽  
Synthesis Method ◽  
One Pot ◽  
Zeolitic Imidazolate Framework ◽  
X Ray ◽  
Metal Organic ◽  
Organic Framework

A co-based porous metal-organic framework (MOF) of zeolitic imidazolate framework-67 (ZIF-67) and carbon nanofibers (CNFs) was utilized to prepare a ZIF-67/CNFs composite via a one-pot synthesis method. Scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDX), and X-ray diffraction (XRD) were employed to investigate the morphology, structure, and composition of the resulting composite. A novel high-performance non-enzymatic electrochemical sensor was constructed based on the ZIF-67/CNFs composite. The ZIF-67/CNFs based sensor exhibited enhanced electrocatalytic activity towards H2O2 compared to a pure ZIF-67-based sensor, due to the synergistic effects of ZIF-67 and CNFs. Meanwhile, chronoamperometry was utilized to explore the detection performance of the sensor. Results showed the sensor displayed high-efficiency electrocatalysis towards H2O2 with a detection limit of 0.62 μM (S/N = 3), a sensitivity of 323 µA mM−1 cm−2, a linear range from 0.0025 to 0.19 mM, as well as satisfactory selectivity and long-term stability. Furthermore, the sensor demonstrated its application potential in the detection of H2O2 in food.

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