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Fluorescent probe for imaging NH in plants, food, and living cells and for quantitative detection of NH in soil and water using a smartphone.
J Hazard Mater
November 2024
College of Food Science and Engineering, College of Chemistry and Materials Engineering, Institute of Ocean, National & Local Joint Engineering Research Center of Storage, Processing and Safety Control Technology for Fresh Agricultural and Aquatic Products, Bohai University, Jinzhou 121013, PR China. Electronic address:
Hydrazine is volatile and highly toxic, causing severe harm to water, soil, air, and organisms. Therefore, real-time detection and long-term monitoring of hydrazine are crucial for environmental protection and human health. Herein, an "OFF-ON" fluorescent probe 5-((10-ethyl-2-methoxy-10 H-phenothiazin-3-yl)methylene)-2,2-dimethyl-1,3-dioxane-4,6-dione (MPD) for hydrazine detection through a nucleophilic addition reaction was developed.
View Article and Find Full Text PDFFabricating whole pine needles biomass with phenylhydrazine-4-sulphonic acid for effective removal of cationic dyes and heavy metal ions from wastewater.
Chemosphere
September 2024
Department of Chemistry, Himachal Pradesh University, Summerhill, Shimla, Himachal Pradesh, India, 171005. Electronic address:
We applied a holistic, sustainable, and green approach to develop an effective multipurpose adsorbent from whole pine needles (PNs), a forest waste lignocellulosic biomass. The PNs were oxidized and modified with phenylhydrazine-4-sulphonic acid (ɸHSOH) to OPN-ɸHSOH. The latter was characterized and tested as an adsorbent for cationic dyes, malachite green (MG), methylene blue (MB), crystal violet (CV), and metal ions (Hg⁺ and Pb⁺).
View Article and Find Full Text PDFA phenothiazine-based ratiometric fluorescence probe for the detection of hydroxylamine in real water and living cells.
Anal Methods
July 2024
Hebei Lansheng Bio-Tech Co., Ltd, Shijiazhuang, 052263, China.
In this study, a phenothiazine-based ratiometric fluorescent probe PCHO was developed for highly sensitive and specific detection of hydroxylamine (HA). In the presence of HA, the aldehyde group on the PCHO molecule underwent a specific nucleophilic addition with HA to form an oxime group, accompanied by significant changes in fluorescence from green to blue. This detection mechanism was well supported by H NMR titration, HRMS and DFT calculations.
View Article and Find Full Text PDFElectrocatalysis Using Cobalt Porphyrin Covalently Linked with Multi-Walled Carbon Nanotubes: Hydrazine Sensing and Hydrazine-Assisted Green Hydrogen Synthesis.
Small
July 2024
Centre for Nanotechnology, Indian Institute of Technology Roorkee, Roorkee, 247667, India.
Acid-treated multi-walled carbon nanotube (MWCNT) covalently functionalized with cobalt triphenothiazine porphyrin (CoTriPTZ-OH) AB type porphyrin, containing three phenothiazine moieties (represented as MWCNT-CoTriPTZ) is synthesized and characterized by various spectroscopic and microscopic techniques. The nanoconjugate, MWCNT-CoTriPTZ, exhibits a pair of distinct redox peaks due to the Co/Co redox process in 0.1 M pH 7.
View Article and Find Full Text PDFIron nanoparticles prepared from South African acid mine drainage for the treatment of methylene blue in wastewater.
Environ Sci Pollut Res Int
June 2024
Department of Chemical Engineering, Cape Peninsula University of Technology, Symphony Way, Bellville 7535, PO Box 1906, Bellville 7535, Cape Town, South Africa.
In this study, three acid mine drainage (AMD) sources were investigated as potential sources of iron for the synthesis of iron nanoparticles using green tea extract (an environmentally friendly reductant) or sodium borohydride (a chemical reductant). Electrical conductivity (EC), total dissolved solids (TDS), dissolved oxygen (DO), oxidation-reduction potential (ORP), ion chromatography (IC), and inductively coupled plasma-mass spectroscopy (ICP-MS) techniques were used to characterize the AMD, and the most suitable AMD sample was selected based on availability. Additionally, three tea extracts were characterized using ferric-reducing antioxidant power (FRAP) and 2,2-diphenyl-1-picryl-hydrazine-hydrate (DPPH), and the most suitable environmentally friendly reductant was selected based on the highest FRAP (1152 µmol FeII/g) and DPPH (71%) values.
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