Molecular-scale Study of Cr(VI) Adsorption onto Lepidocrocite Facets by EXAFS, In Situ ATR-FTIR, Theoretical Frequency Calculations and DFT+U Techniques

2022 ◽  
Author(s):  
Xiaofei Li ◽  
Chuling Guo ◽  
Xiaohu Jin ◽  
Qian Yao ◽  
Qianqian Liu ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Metal Ions ◽  
Heavy Metal Ions ◽  
Natural Environments ◽  
Iron Mineral ◽  
Theoretical Frequency ◽  
Molecular Scale

Lepidocrocite, as a ubiquitous iron mineral, is widely detected as different morphologies in natural environments, controlling the mobility and availability of heavy metal ions (HMIs). These different morphologies of lepidocrocite...

Metal in situ surface functionalization of polymer-grafted-carbon nanotube composite membranes for fast efficient nanofiltration

2017 ◽  
Vol 5 (2) ◽  
pp. 583-592 ◽  
Author(s):  
Faizal Soyekwo ◽  
Qiugen Zhang ◽  
Runsheng Gao ◽  
Yan Qu ◽  
Ruixue Lv ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Carbon Nanotube ◽  
Metal Ions ◽  
Surface Functionalization ◽  
Heavy Metal Ions ◽  
Composite Membranes ◽  
Carbon Nanotube Composite

Metal in situ surface functionalized PEI-g-MWCNT membranes are facilely prepared for nanofiltration of heavy metal ions in solution with high fluxes.

Defect- and phase-engineering of Mn-mediated MoS2 nanosheets for ultrahigh electrochemical sensing of heavy metal ions: chemical interaction-driven in situ catalytic redox reactions

2018 ◽  
Vol 54 (67) ◽  
pp. 9329-9332 ◽  
Author(s):  
Wen-Yi Zhou ◽  
Shan-Shan Li ◽  
Xiang-Yu Xiao ◽  
Shi-Hua Chen ◽  
Jin-Huai Liu ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Metal Ions ◽  
Electrochemical Detection ◽  
Heavy Metal Ions ◽  
Redox Reactions ◽  
Chemical Interaction ◽  
Electrochemical Sensing ◽  
Mos2 Nanosheets ◽  
Phase Engineering

An ultrasensitive electrochemical detection of heavy metal ions is achieved via defect- and phase-engineering of Mn-mediated MoS2 nanosheets.

scholarly journals Metal Nanostructures for Environmental Pollutant Detection Based on Fluorescence

Nanomaterials ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 276
Author(s):  
Luca Burratti ◽  
Erica Ciotta ◽  
Fabio De Matteis ◽  
Paolo Prosposito
Keyword(s):  
Heavy Metal ◽  
Metal Ions ◽  
Optical Sensors ◽  
Heavy Metal Ions ◽  
Analytical Techniques ◽  
Environmental Pollutant ◽  
Metal Nanostructures ◽  
Pesticides In Water ◽  
Metal Nanomaterials

Heavy metal ions and pesticides are extremely dangerous for human health and environment and an accurate detection is an essential step to monitor their levels in water. The standard and most used methods for detecting these pollutants are sophisticated and expensive analytical techniques. However, recent technological advancements have allowed the development of alternative techniques based on optical properties of noble metal nanomaterials, which provide many advantages such as ultrasensitive detection, fast turnover, simple protocols, in situ sampling, on-site capability and reduced cost. This paper provides a review of the most common photo-physical effects impact on the fluorescence of metal nanomaterials and how these processes can be exploited for the detection of pollutant species. The final aim is to provide readers with an updated guide on fluorescent metallic nano-systems used as optical sensors of heavy metal ions and pesticides in water.

Synthesis of sodium polyacrylate–bentonite using in situ polymerization for Pb2+ removal from aqueous solutions

RSC Advances ◽  
2016 ◽  
Vol 6 (53) ◽  
pp. 48145-48154 ◽  
Author(s):  
Youjun He ◽  
Meishan Pei ◽  
Ni Xue ◽  
Luyan Wang ◽  
Wenjuan Guo
Keyword(s):  
Heavy Metal ◽  
Aqueous Solutions ◽  
Metal Ions ◽  
Heavy Metal Ions ◽  
In Situ Polymerization ◽  
Sodium Polyacrylate ◽  
First Time

A sodium polyacrylate–bentonite material (PAANa–Bent), as an adsorbent for heavy metal ions, is synthesized for the first time using in situ polymerization.

Target-initiated impedimetric proximity ligation assay with DNAzyme design for in situ amplified biocatalytic precipitation

The Analyst ◽  
2014 ◽  
Vol 139 (12) ◽  
pp. 2998-3001 ◽  
Author(s):  
Juan Tang ◽  
Minghua Lu ◽  
Dianping Tang
Keyword(s):  
Heavy Metal ◽  
Metal Ions ◽  
Heavy Metal Ions ◽  
Silver Ions ◽  
Proximity Ligation Assay ◽  
Proximity Ligation ◽  
Precipitation Technique ◽  
First Time ◽  
Assay Protocol

A target-initiated proximity ligation assay protocol with DNAzyme formation was for the first time designed for ultrasensitive impedimetric monitoring of heavy metal ions (silver ions were used in this case) by coupling with an enzymatic biocatalytic precipitation technique.

In situ detection of heavy-metal ions in sewage with screen-printed electrode-based portable electrochemical sensor

The Analyst ◽  
2021 ◽  
Author(s):  
Qiwen Bao ◽  
Gang Li ◽  
Zhengchun Yang ◽  
peng pan ◽  
Jun Liu ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Metal Ions ◽  
Metal Pollution ◽  
Heavy Metal Pollution ◽  
Heavy Metal Ions ◽  
Rapid Development ◽  
Electrochemical Analysis ◽  
Screen Printed Electrode ◽  
In Situ Detection

The rapid development of industrial technologies continuously increases the heavy-metal pollution of water resources. Recently, portable electrochemical analysis-based devices for detecting heavy-metal ions have attracted much attention due to their...

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