A hydrostable Zn2+ Coordination Polymer for Multifunction Detection of Inorganic and Organic Contaminants in Water

2021 ◽  
Author(s):  
Hao Cheng ◽  
Fu-Qiang Song ◽  
NaNa Zhao ◽  
Xue-Qin Song
Keyword(s):  
Heavy Metal ◽  
Coordination Polymer ◽  
Metal Ions ◽  
Human Health ◽  
Organic Contaminants ◽  
Heavy Metal Ions ◽  
Environmental Safety ◽  
Fluorescent Sensors ◽  
Challenging Issue ◽  
Inorganic And Organic Contaminants

From the perspective of human health and environmental safety, the development of hydrostable fluorescent sensors for detection of heavy metal ions and nitroaromatics is an important but challenging issue. To...

scholarly journals Fluorescent Sensors for the Detection of Heavy Metal Ions in Aqueous Media

Sensors ◽  
2019 ◽  
Vol 19 (3) ◽  
pp. 599 ◽  
Author(s):  
Nerea De Acha ◽  
César Elosúa ◽  
Jesús Corres ◽  
Francisco Arregui
Keyword(s):  
Heavy Metal ◽  
Metal Ions ◽  
Heavy Metal Ions ◽  
Organic Dyes ◽  
Aqueous Media ◽  
High Specificity ◽  
Fluorescent Sensors ◽  
Special Focus ◽  
Quality Of Water

Due to the risks that water contamination implies for human health and environmental protection, monitoring the quality of water is a major concern of the present era. Therefore, in recent years several efforts have been dedicated to the development of fast, sensitive, and selective sensors for the detection of heavy metal ions. In particular, fluorescent sensors have gained in popularity due to their interesting features, such as high specificity, sensitivity, and reversibility. Thus, this review is devoted to the recent advances in fluorescent sensors for the monitoring of these contaminants, and special focus is placed on those devices based on fluorescent aptasensors, quantum dots, and organic dyes.

Straw-sheaf-like terbium-based coordination polymer architectures: microwave-assisted synthesis and their application as selective luminescent probes for heavy metal ions

2015 ◽  
Vol 39 (4) ◽  
pp. 2973-2979 ◽  
Author(s):  
Mengmeng Shi ◽  
Chenghui Zeng ◽  
Lei Wang ◽  
Zhiwen Nie ◽  
Yongxia Zhao ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Heavy Metal ◽  
Coordination Polymer ◽  
Metal Ions ◽  
Heavy Metal Ions ◽  
Microwave Assisted Synthesis ◽  
Luminescent Probes ◽  
Microwave Assisted ◽  
Highly Sensitive ◽  
Polymer Architectures

Terbium-based coordination polymer architectures were successfully synthesized via a microwave heating approach and they showed highly sensitive and selective luminescence quenching to Pb2+ in aqueous solution.

Robust and direct electrochemical sensing of arsenic using zirconia nanocubes

The Analyst ◽  
2016 ◽  
Vol 141 (13) ◽  
pp. 4211-4218 ◽  
Author(s):  
Gaurav Bhanjana ◽  
Neeraj Dilbaghi ◽  
Savita Chaudhary ◽  
Ki-Hyun Kim ◽  
Sandeep Kumar
Keyword(s):  
Heavy Metal ◽  
Metal Ions ◽  
Human Health ◽  
Heavy Metal Ions ◽  
Electrochemical Sensing ◽  
Food Items

The presence of heavy metal ions in the environment and in food items can severely harm human health.

scholarly journals A Review on Abatement of Nickel(II) from Aqueous Solution by Agricultural Biomass

2020 ◽  
pp. 1-8
Author(s):  
S. Sophie Beulah ◽  
K. Muthukumaran
Keyword(s):  
Aqueous Solution ◽  
Heavy Metal ◽  
Metal Ions ◽  
Human Health ◽  
Removal Efficiency ◽  
Heavy Metal Ions ◽  
Detrimental Effect ◽  
Agricultural Biomass ◽  
Optimum Parameters

Levels of toxins has increased in water due to the spurge of industries. Nickel (II) is mostly used in industries because of its anticorrosion behaviour. Nickel (II) is present in the effluent of electroplating, plastics manufacturing, fertilizers and mining industries. It causes detrimental effect on the human health as well as environment because of its toxicity, non-biodegradability and bioaccumulation. Adsorption technique has been investigated in many researches as an effective method for not only detoxifying but also recovering precious heavy metal ions from aqueous solution. In this review various agricultural biomass based adsorbents used for removing Ni(II) from aqueous solution, optimum parameters employed and their removal efficiency from wastewater have been explored.

Removal of Heavy Metals from Wastewater of Textile Industry Using Polymeric Nano-Adsorbent

2019 ◽  
Vol 7 (1) ◽  
pp. 10-18
Author(s):  
Ahmad Naveed ◽  
Najaf Ali ◽  
Muhammad Ashraf ◽  
Hafiz Miqdad Masood
Keyword(s):  
Heavy Metal ◽  
Metal Ions ◽  
Human Health ◽  
Retention Time ◽  
Textile Industry ◽  
Heavy Metal Ions ◽  
Electrostatic Force ◽  
Human Society ◽  
Aquatic Life ◽  
Adsorbent Dosage

Wastewater of textile industry having impurities and heavy metal ions cause problems in human society that can endanger the human health through food chain. Adsorption of heavy metal ions before draining makes wastewater safe for aquatic life and human health. Now a day’s adsorption of heavy metal through polymeric nano adsorbents is the emerging technology which is more efficient than conventional adsorbents like activated carbon. The pH 9.0 gave maximum 96% sorption of Co at 1.0 g/L adsorbent dosage, due to increased electrostatic force of attraction produced by the negative charge at the surface of sorbent which is favorable for adsorbing cationic species. In the beginning of15 minute retention time, metal ions adsorption was rapid due to availability of more number of adsorptive sites but further increase of retention time decreased the sorption capacity due to partial desorption that may occur due to the charge density and diameter of hydrated ions. Similarly in case of Cu, the maximum sorption was 95% at 7.0 pH using 1.0 g/L adsorbent dosage.

scholarly journals Fungal remediation of Cd(ii) from wastewater using immobilization techniques

RSC Advances ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 4853-4863
Author(s):  
Eman Abdullah M. Ali ◽  
Mohsen A. Sayed ◽  
Tahany M. A. Abdel-Rahman ◽  
Rabab Hussein
Keyword(s):  
Heavy Metal ◽  
Metal Ions ◽  
Human Health ◽  
Heavy Metal Ions ◽  
Immobilization Techniques

The pollution of wastewater by heavy metal ions is hazardous to the environment and human health.

scholarly journals Rhodamine-Triazole Functionalized Fe3O4@SiO2 Nanoparticles as Fluorescent Sensors for Heavy Metal Ions

2019 ◽  
Vol 35 (3) ◽  
pp. 1054-1061 ◽  
Author(s):  
Kanokorn Wechakorn ◽  
Pairsunan Chanpanich ◽  
Pimfa Kamkalong ◽  
Suranan Anantachisilp
Keyword(s):  
Heavy Metal ◽  
Metal Ions ◽  
Metal Ion ◽  
Heavy Metal Ions ◽  
Fluorescence Emission ◽  
Sio2 Nanoparticles ◽  
Fluorescent Sensors ◽  
Ion Binding ◽  
Metal Ion Binding ◽  
Color Changes

Rhodamine-triazole sensor functionalized Fe3O4@SiO2 nanoparticles were developed for the detection of heavy metal ions, namely Cu2+, Ni2+, Hg2+, Co2+, Fe3+, and Pb2+. Rhodamine conjugated with a triazole moiety (RBT) was utilized as the metal ion binding site. The RBT-Fe3O4@SiO2 nanoparticles were fully characterized by XRD, FTIR, TGA, SEM and TEM techniques. Additionally, RBT-functionalized Fe3O4@SiO2 nanoparticles can be separated from the aqueous phase by application of an external magnet, leading to clear naked-eye observation of the color changes and fluorescence enhancement. From UV-Vis absorption spectra, aqueous solutions of RBT-Fe3O4@SiO2 in the presence of heavy metal ions show an absorption peak at 554 nm. Fluorescence titration experiments reveal that the intensity of the fluorescence emission band at 574 nm is linearly dependent on Cu2+ concentration, over a 100-800 µM range. Furthermore, complexation of Cu2+ by RBT-Fe3O4@SiO2 nanoparticles can induce ring-opening of the rhodamine spirolactam ring followed by hydrolysis, confirmed by mass spectrometry.

Electrochemical detection of heavy metal ions in water

2021 ◽  
Author(s):  
qi ding ◽  
chen li ◽  
haijun wang ◽  
Chuanlai Xu ◽  
Hua Kuang
Keyword(s):  
Water Pollution ◽  
Heavy Metal ◽  
Metal Ions ◽  
Human Health ◽  
Electrochemical Detection ◽  
Heavy Metal Ions ◽  
Ecological Balance

Heavy metal ions are one of the main sources of water pollution. Most heavy metal ions are carcinogens that pose a threat to both ecological balance and human health. With...

Preparation of graphene oxide–montmorillonite nanocomposite and its application in multiple-pollutants removal from aqueous solutions

2019 ◽  
Vol 79 (2) ◽  
pp. 323-333 ◽  
Author(s):  
Chengyu Zhang ◽  
Jingde Luan ◽  
Wei Chen ◽  
Xin Ke ◽  
Haijun Zhang
Keyword(s):  
Heavy Metal ◽  
Graphene Oxide ◽  
Metal Ions ◽  
Organic Contaminants ◽  
Contact Time ◽  
Heavy Metal Ions ◽  
Crosslinking Agent ◽  
Experimental Studies ◽  
Contact Temperature ◽  
Simultaneous Adsorption

Abstract It is of interest to develop a novel fabrication method of a mineral adsorbent for wastewater treatment to remove the combination of heavy metal ions and refractory organic contaminants. The crosslinking agent stearyl trimethyl ammonium chloride was added into a suspension of montmorillonite and graphene oxide to implement their recombination to fabricated graphene oxide–montmorillonite nanocomposite (GMN). The fabricated nanocomposite was characterized by X-ray diffraction, scanning electron microscopy, Fourier transform infrared spectroscopy, Brunauer-Emmett-Teller analysis and zeta potential. Results indicated that GMN exhibited a honeycomb texture, providing the chemical reaction site for the simultaneous adsorption of Pb2+ and p-nitrophenol (PNP). Factors including pH value, contact time, contact temperature and GMN dosage in the adsorption process were crucial for both Pb2+ adsorption and PNP adsorption. The optimum adsorption capacities of Pb2+ and PNP onto GMN were 19.39 mg·g−1 and 14.90 mg·g−1 under the condition of pH = 6, contact temperature 55 °C, contact time 60 min and GMN dosage 0.10 g, respectively. Data from experimental studies on simultaneous adsorption was well described by the pseudo-second-order model. The implementation of this work shows that GMN is a promising material for application in the simultaneous removal of heavy metal ions and refractory organic contaminants.

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