In Situ Laser-Induced Breakdown Spectroscopy for Chromium Speciation Analysis Based on the Interactions of Oxygen-Containing Groups with Functionalized Co3O4-rGO: Evidence from Advanced Optical Techniques and Density Functional Theoretical Calculations under Electric Field DOI
Congcong Huang,

Zong‐Yin Song,

Xiang‐Yu Xiao

et al.

Analytical Chemistry, Journal Year: 2023, Volume and Issue: unknown

Published: Dec. 15, 2023

Achieving accurate detection of different speciations heavy metal ions (HMIs) in an aqueous solution is urgent problem due to the bioavailabilities and physiological toxicity. Herein, we nominated a novel strategy detect HCrO4– Cr(OH)2+ at trace level via electrochemical sensitive surface constructed by Co3O4-rGO modified with amino carboxyl groups, which revealed that interactions between distinct functional groups oxygen-containing target are conducive susceptible anti-interference detection. The sensitivities 19.46 counts μg–1 L for 13.44 were obtained under optimal conditions, while limits 0.10 0.12 μg L–1, respectively. Satisfactory actual water sample analysis results obtained. A series advanced optical techniques like X-ray photoelectron spectroscopy, absorption near-edge structure technology, density theory calculations electric field demonstrated chemical contribute more fixation than electrical attraction alone. presence from simple ionic forms was critical factor selectivity Furthermore, valence cycle Co(II)/(III) synergistically boosted performance. This research provides promising tactic microscopic perspective groups' accomplish precise speciation HMIs environment.

Language: Английский

Oxygen Vacancy-Enriched CoFe2O4 for Electrochemically Sensitive Detection of the Breast Cancer CD44 Biomarker DOI

Abudulitifujiang Abuduhelili,

Rongling Chen, Jian Sun

et al.

Langmuir, Journal Year: 2024, Volume and Issue: 40(28), P. 14583 - 14593

Published: July 5, 2024

Enhancing the selectivity of detection methods is essential to distinguish breast cancer biomarker cluster differentiation 44 (CD44) from other species and reduce false-positive or false-negative results. Here, oxygen vacancy-enriched CoFe

Language: Английский

Citations

2
Computer-aided design and preparation of surface arsenite molecularly imprinted polymers for selective adsorption and highly sensitive detection of As(Ⅲ) DOI

Keyang Fu,

Huizhen Sun,

Xiuhua Chen

et al.

Journal of Hazardous Materials, Journal Year: 2024, Volume and Issue: 480, P. 136386 - 136386

Published: Nov. 2, 2024

Language: Английский

Citations

1
BiVO4 Photoanodes Modified with Synergetic Effects between Heterojunction Functionalized FeCoOx and Plasma Au Nanoparticles DOI Open Access
Huangzhaoxiang Chen, Qian Zhang, Aumber Abbas

et al.

Catalysts, Journal Year: 2023, Volume and Issue: 13(7), P. 1063 - 1063

Published: July 1, 2023

The design and development of high-performance photoanodes are the key to efficient photoelectrochemical (PEC) water splitting. Based on carrier transfer characteristics localized surface plasmon resonance effect noble metals, gold nanoparticles (AuNPs) have been used improve performance photoanodes. In this study, a novel composite BiVO4/Au/FeCoOx photoanode is constructed, quantitative analysis its systematically conducted. results reveal that co-modification AuNPs FeCoOx plays synergetic role in enhancing absorption ultraviolet visible light BiVO4, which mainly attributed induced by extended edge position BiVO4/FeCoOx heterojunction. exhibits high photocurrent density 4.11 mA cm−2 at 1.23 V versus RHE room temperature under AM 1.5 G illumination, corresponds 299% increase compared pristine BiVO4 photoanode. These provide practical support for preparation PEC decorated with FeCoOx.

Language: Английский

Citations

1
Green Design and Preparation of Surface Arsenic Ion-Imprinted Nanoparticles for the Selective Adsorption and Highly Sensitive Detection of Heavy Metal Arsenic(Iii) in Environmental Sewage DOI

Kaixin Fu,

Huizhen Sun,

Xiuhua Chen

et al.

Published: Jan. 1, 2024

This study utilized a simple hydrothermal method to synthesize an arsenic ion-imprinted polymer (As(III)-IIPs@MOFs) for treating and monitoring arsenic-contaminated water. Employing computational simulations, system was designed using As(III) with four functional monomers, streamlining the process reducing experimental workload. A highly sensitive electrochemical sensor detection developed, integrating advanced techniques. The optimal template monomer (MAA) cross-linker ratio found be 1:3:40, corroborated by predictions. These three-dimensional porous nanoparticles demonstrated adsorption capacity of 312 mg g-1, kinetics isotherms aligning PSO Sips models. showed range from 1.0 × 10-11 mol L-1 3.0 10-5 limit 10-13 L-1. high surface area As(III)-IIPs@MOFs enhanced specificity anti-interference, boosted gold increased sensitivity. Adsorption mechanisms were primarily electrostatic coordination interactions, confirmed energy calculations FTIR studies. has been successfully applied in river tap water tests, offering practical theoretical basis remediation environmental waters

Language: Английский

Citations

0
Green Preparation of Surface Arsenic Ion-Imprinted Polymers by Means of Computational Simulation for Selective Extraction and Highly Sensitive Determination of Arsenic(Ⅲ) in Environmental Sewage DOI

Kaixin Fu,

HuiZhen Sun,

Xiuhua Chen

et al.

Published: Jan. 1, 2023

A novel surface ion-imprinted polymer (SIIPs) for the removal and analysis of toxic As(Ⅲ) in water was synthesized using a straightforward co-precipitation method, based on computational simulation design Density Functional Theory (DFT). The characteristics structure, morphology, electrochemical properties were assessed. experimental findings indicated that transparent imprinted membrane, which prepared advance, exhibited significantly high adsorption capacity 312 mg g－1 As(Ⅲ). analytical quantification arsenic exhibits broad linear dynamic range spanning from 1.0 × 10−11 mol L−1 to 3.0 10−5 L−1, accompanied by notably low detection limit 10−13 L−1. process molecular imprinting offers highly discerning approach detect adsorb As(III), resulting enhanced resistance interference. exceptional sensing capabilities As(Ⅲ)-SIIPs towards can be primarily attributed their specific area, porous ion transport channels, abundant imprints, as demonstrated through theoretical FTIR DFT techniques. active sites present system are hydroxyl groups (-OH) carboxyl (-COOH). Furthermore, incorporation gold nanoparticles resulted an augmentation sensitivity As(III). established methodology effectively utilized both river tap samples.

Language: Английский

Citations

0
Green Preparation of Surface Arsenic Ion-Imprinted Polymers by Means of Computational Simulation for Selective Extraction and Highly Sensitive Determination of Arsenic(Ⅲ) in Environmental Sewage DOI

Kaixin Fu,

Huizhen Sun,

Xiuhua Chen

et al.

Published: Jan. 1, 2023

A novel surface ion-imprinted polymer (SIIPs) was synthesized for the removal and analysis of hazardous As(III) in water utilizing a simple co-precipitation process based on computational simulation design Density Functional Theory (DFT). The structure, morphology, electrochemical properties were all evaluated. experimental results showed that pre-prepared transparent imprinted membrane had considerably high adsorption capacity 312 mg g－1 As(III). Arsenic analytical quantification has large linear dynamic range spanning from 1.0 × 10−11 mol L−1 to 3.0 10−5 L−1, with particularly low detection limit 10−13 L−1. molecular imprinting provides highly selective method detecting adsorbing As(III), resulting increased interference resistance. As(III)-SIIPs' extraordinary sensing capabilities towards can be attributed primarily their specific area, porous ion transport channels, numerous imprints, as proven by theoretical studies FTIR DFT techniques. Hydroxyl groups (-OH) carboxyl (-COOH) are active sites system. Furthermore, introduction gold nanoparticles sensitivity established methodology successfully used quantify both river tap samples.

Language: Английский

Citations

0
In Situ Laser-Induced Breakdown Spectroscopy for Chromium Speciation Analysis Based on the Interactions of Oxygen-Containing Groups with Functionalized Co3O4-rGO: Evidence from Advanced Optical Techniques and Density Functional Theoretical Calculations under Electric Field DOI
Congcong Huang,

Zong‐Yin Song,

Xiang‐Yu Xiao

et al.

Analytical Chemistry, Journal Year: 2023, Volume and Issue: unknown

Published: Dec. 15, 2023

Achieving accurate detection of different speciations heavy metal ions (HMIs) in an aqueous solution is urgent problem due to the bioavailabilities and physiological toxicity. Herein, we nominated a novel strategy detect HCrO4– Cr(OH)2+ at trace level via electrochemical sensitive surface constructed by Co3O4-rGO modified with amino carboxyl groups, which revealed that interactions between distinct functional groups oxygen-containing target are conducive susceptible anti-interference detection. The sensitivities 19.46 counts μg–1 L for 13.44 were obtained under optimal conditions, while limits 0.10 0.12 μg L–1, respectively. Satisfactory actual water sample analysis results obtained. A series advanced optical techniques like X-ray photoelectron spectroscopy, absorption near-edge structure technology, density theory calculations electric field demonstrated chemical contribute more fixation than electrical attraction alone. presence from simple ionic forms was critical factor selectivity Furthermore, valence cycle Co(II)/(III) synergistically boosted performance. This research provides promising tactic microscopic perspective groups' accomplish precise speciation HMIs environment.

Language: Английский

Citations

0