Photoelectrochemical sensor for detection Hg2+ based on in situ generated MOFs-like structures

Bu, Yuwei; Wang, Kun; Yang, Xiaoyan; Nie, Guangming

doi:10.1016/j.aca.2022.340496

Cited by 15 publications

(5 citation statements)

References 57 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The -COOH-rich HMA binds photoactive materials and provides reaction sites for coupling of linker probes. 42 As shown in Fig. 4B, when the concentration of HMA was less than 1.0 mg mL −1 , the photocurrent signal increased signicantly with the increase of HMA concentration, and when the concentration of HMA was more than 1.0 mg mL −1 , the photocurrent decreased remarkably with the increase of HMA concentration.…”

Section: Optimization Of Experimental Conditionsmentioning

confidence: 77%

A label-free photoelectrochemical biosensor for silver ions based on Zn–Co doped C and CdS QD nanomaterials

Zhang,

Wang,

Zhou

et al. 2024

Anal. Methods

Self Cite

View full text Add to dashboard Cite

show abstract

Section: Optimization Of Experimental Conditionsmentioning

confidence: 77%

A label-free photoelectrochemical biosensor for silver ions based on Zn–Co doped C and CdS QD nanomaterials

Zhang,

Wang,

Zhou

et al. 2024

Anal. Methods

Self Cite

View full text Add to dashboard Cite

show abstract

“…mdpi.com/article/10.3390/molecules29010001/s1, Figure S1 S1: Comparison between CeO 2 ECL sensor and other methods for detecting Hg 2+ . References [37][38][39][40] are cited in the Supplementary Materials.…”

Section: Supplementary Materialsmentioning

confidence: 99%

“…The following supporting information can be downloaded at: , Figure S1: EDS mapping images of (A) CeO 2 (B) Ce (C) O (D) N; Figure S2: (A) Optimization of pH of ECL sensing environment (B) The concentration of the CeO 2 solution dripped onto the electrode surface; Table S1: Comparison between CeO 2 ECL sensor and other methods for detecting Hg 2+ . References [ 37 , 38 , 39 , 40 ] are cited in the Supplementary Materials.…”

mentioning

confidence: 99%

Electrochemiluminescence Sensor Based on CeO2 Nanocrystalline for Hg2+ Detection in Environmental Samples

Tian,

Tang,

Guo

et al. 2023

Molecules

View full text Add to dashboard Cite

The excessive concentration of heavy-metal mercury ions (Hg2+) in the environment seriously affects the ecological environment and even threatens human health. Therefore, it is necessary to develop rapid and low-cost determination methods to achieve trace detection of Hg2+. In this paper, an Electrochemiluminescence (ECL) sensing platform using a functionalized rare-earth material (cerium oxide, CeO2) as the luminescent unit and an aptamer as a capture unit was designed and constructed. Using the specific asymmetric matching between Hg2+ and thymine (T) base pairs in the deoxyribonucleic acid (DNA) single strand, the “T−Hg−T” structure was formed to change the ECL signal, leading to a direct and sensitive response to Hg2+. The results show a good linear relationship between the concentration and the response signal within the range of 10 pM–100 µM for Hg2+, with a detection limit as low as 0.35 pM. In addition, the ECL probe exhibits a stable ECL performance and excellent specificity for identifying target Hg2+. It was then successfully used for spiked recovery tests of actual samples in the environment. The analytical method solves the problem of poor Hg2+ recognition specificity, provides a new idea for the efficient and low-cost detection of heavy-metal pollutant Hg2+ in the environment, and broadens the prospects for the development and application of rare-earth materials.

show abstract

“…However, we have found that the PEC signal of CdS significantly decreases with time, which essentially hinders the construction of reusable and sensitive PEC sensor based on CdS nanoparticles. In order to improve the PEC performance of CdS, many endeavors have been performed, e.g., modifying the structure, hybridizing with other metal, carbon-based materials, or dyes, − etc.…”

Section: Introductionmentioning

confidence: 99%

Sn-Triggered Protein Self-Assembly Photoanode Based on CdS Quantum Dots and Au Nanoparticles for Dual-Electrode Photoelectrochemical Detection of Pb²⁺

Wang,

Tang,

Xing

et al. 2024

ACS Appl. Nano Mater.

Self Cite

View full text Add to dashboard Cite

Protein self-assembly has attracted extensive interest in the field of biomaterials and biomedicine due to its inherent biocompatibility and flexible designability. In this paper, we propose a potential route to generate a photoelectrochemical (PEC) sensing platform through Sn-triggered protein selfassembly. Specifically, Sn 2+ ion was used to trigger the selfassembly of bovine serum albumin (BSA) to form in situ Sn/BSA film on the indium tin oxide (ITO) glass. Then, a CdS thin film as a PEC active material was electrodeposited on the Sn/BSA modified ITO electrode. The hybrid Sn/BSA film was demonstrated to stabilize the PEC response of the CdS. A dual-electrode PEC cell comprised a graphene oxide (GO)-modified photocathode and a Sn/BSA hybrid film/CdS-loaded photoanode. Pb 2+response deoxyribozymes (DNAzymes) were hybridized with the substrate strands tagged with Au nanoparticles (Au NPs) and then immobilized on the photocathode. Upon Pb 2+ -induced cleavage, Au NP-linked oligonucleotide fragment dislocated from the photocathode surface, resulting in a decrease in the PEC response. The present PEC biosensor showed highly sensitive detection of Pb 2+ with a wide detection range from 10.0 fM to 0.1 μM and a low detection limit of 4.0 fM. This work demonstrates that the Sn/ BSA hybrid film has potential application prospects in PEC sensing, thereby providing a new way of thinking for the design and development of the bioinspired biosensor.

show abstract

Photoelectrochemical sensor for detection Hg2+ based on in situ generated MOFs-like structures

Cited by 15 publications

References 57 publications

A label-free photoelectrochemical biosensor for silver ions based on Zn–Co doped C and CdS QD nanomaterials

A label-free photoelectrochemical biosensor for silver ions based on Zn–Co doped C and CdS QD nanomaterials

Electrochemiluminescence Sensor Based on CeO2 Nanocrystalline for Hg2+ Detection in Environmental Samples

Sn-Triggered Protein Self-Assembly Photoanode Based on CdS Quantum Dots and Au Nanoparticles for Dual-Electrode Photoelectrochemical Detection of Pb²⁺

Contact Info

Product

Resources

About

Photoelectrochemical sensor for detection Hg2+ based on in situ generated MOFs-like structures

Cited by 15 publications

References 57 publications

A label-free photoelectrochemical biosensor for silver ions based on Zn–Co doped C and CdS QD nanomaterials

A label-free photoelectrochemical biosensor for silver ions based on Zn–Co doped C and CdS QD nanomaterials

Electrochemiluminescence Sensor Based on CeO2 Nanocrystalline for Hg2+ Detection in Environmental Samples

Sn-Triggered Protein Self-Assembly Photoanode Based on CdS Quantum Dots and Au Nanoparticles for Dual-Electrode Photoelectrochemical Detection of Pb2+

Contact Info

Product

Resources

About

Sn-Triggered Protein Self-Assembly Photoanode Based on CdS Quantum Dots and Au Nanoparticles for Dual-Electrode Photoelectrochemical Detection of Pb²⁺