A Cu<sup>2+</sup>-doped two-dimensional material-based heterojunction photoelectrode: application for highly sensitive photoelectrochemical detection of hydrogen sulfide

Yu, Siyuan; Chen, Xia; Huang, Chaobiao; Han, Deman

doi:10.1039/c9ra05385a

Cited by 13 publications

(9 citation statements)

References 40 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Alternatively, increasing efforts have been concentrated on photoelectrochemical (PEC) detection techniques because of their advantages such as low background signals. , Especially, the PEC sensing devices can be easily miniaturized to be equipped with portable electronic readouts for in-field applications. Hence, many endeavors have been recently devoted to the detection of H 2 S or S 2– using PEC sensing approaches. − For example, Du and coworkers have fabricated a PEC sensor for sensing H 2 S based on a Cu 9 S 8 /polypyrrole/ZIF-67 heterojunction . Yuan’s group developed g-C 3 N 4 /Ag/AgI nanocomposites with a Z-scheme heterojunction for the selective PEC detection of H 2 S .…”

Section: Introductionmentioning

confidence: 99%

Turning on the Photoelectrochemical Responses of Cd Probe-Deposited g-C₃N₄ Nanosheets by Nitrogen Plasma Treatment toward a Selective Sensor for H₂S

Chen

Zhang

et al. 2020

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

A selective photoelectrochemical (PEC) sensor has been designed for the signal-on detection of H2S using g-C3N4 nanosheets that were treated with N2 plasma for depositing Cd probes. It was discovered that the yielded Cd/N@g-C3N4 nanocomposites could present enhanced photocurrents of specific responses to H2S under visible light irradiation, in contrast to the ones without the pretreatment of N2 plasma showing no H2S response. Herein, the Cd probes deposited on g-C3N4 nanosheets might react with H2S to generate CdS on Cd/N@g-C3N4, forming the efficient heterojunctions. Especially, the plasma-derived N contents might act as the “bridge” to promote charge transfer between the generated CdS and g-C3N4, resulting in the “signal-on” PEC responses to H2S. A selective PEC sensor was thereby developed for sensing H2S of concentrations linearly ranging from 40.0 to 10,000 pM, with a detection limit of about 21 pM. Also, the feasibility of sensing H2S in industrial waste gas was demonstrated by recovery tests. More importantly, this N2 plasma treatment route for g-C3N4 nanosheets may open a new door toward the construction of a Cd probe-based heterojunction for the signal-on PEC sensing platform, which is promising for the wide application in the fields of environmental monitoring, food safety, and biomedical analysis.

show abstract

Section: Introductionmentioning

confidence: 99%

Turning on the Photoelectrochemical Responses of Cd Probe-Deposited g-C₃N₄ Nanosheets by Nitrogen Plasma Treatment toward a Selective Sensor for H₂S

Chen

Zhang

et al. 2020

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

show abstract

“…Generally, the quenching of photocurrent should be resulted from the recombination of photoinduced electron–hole pair, but the declined PL intensity denies the conclusion of highly recombined photogenerated charge in case of Cu-CNQDs. Here, the Cu(II) can be anchored on the surface of CNQDs through ionic coordination interactions between Cu(II) and N atoms and formed the exciton trapping center, resulting in the declined photocurrent intensity . Furthermore, the separation efficiency of the photoexcited carriers were evaluated by the value of charge transfer resistance in the EIS response.…”

Section: Resultsmentioning

confidence: 99%

Cu(II)-Grafted Carbon Nitride Quantum Dots with High Crystallinity for Photoelectrochemical Detection Application

Wang

Chen

Qinqin

et al. 2022

Ind. Eng. Chem. Res.

View full text Add to dashboard Cite

The rapid growth of industry inevitably leads to a large variety of organic pollutants in the aquatic environment. The design of a photoelectrochemical (PEC) sensor is significant to achieve the goal of sensitive quantitative determination of organic pollutant residues. In this work, the graphitic carbon nitride (g-C 3 N 4 ) quantum dots (CNQDs) with high crystallinity were synthesized through the step-by-step cutting of bulk g-C 3 N 4 , which were modified with Cu(II) and then utilized to the fabrication of a PEC sensor for monitoring the typical organic pollutant methyl viologen in water. In the detection process, by means of the redox of Cu(II)/Cu(I), Cu(II) can effectively accelerate the photogenerated carriers' separation of CNQDs, and facilitate the reduction of methyl viologen, contributing to the notable photocurrent signal. More importantly, the stable PEC sensor presents a perfect linearity between the change in photoelectric signal and logarithm of methyl viologen concentrations ranging from 0.1 to 200 ng mL −1 . Thus, the constructed Cu-CNQDs 2% can be widely utilized in the quantitative determination of methyl viologen in real monitoring of environmental pollutants.

show abstract

“…The Interference by oxidizing agents CNTs [198,233] of nanomaterials are based on the employment of heavy metal ions, increasing healthcare concerns. However, the water-solubility, photostability, and porous structures of nanomaterial-based probes are attractive features over traditional alternatives.…”

Section: Perspective and Outlookmentioning

confidence: 99%

Synthetic nanoprobes for biological hydrogen sulfide detection and imaging

Zhou

Mazur

Fan

et al. 2022

VIEW

View full text Add to dashboard Cite

Hydrogen sulfide (H2S) is a gaseous molecule involved in multiple biological and physiological processes, including various diseases such as cancer and neurodegenerative disorders. This has led to the development of various analytical methods to monitor H2S in biological settings. Among these, fluorescence‐based assays, specifically organic small‐molecule probes, have been thoroughly utilized. They offer good sensitivity and specificity as sensors, and noninvasive detection with high spatiotemporal resolution in in vitro and in vivo imaging. Despite attempts to decrease the rate of photobleaching and enhance the photostability of these dyes, they are still limited by low survival time and complex reagent pretreatment. Fortunately, nanotechnology has been applied to develop effective, highly sensitive, and specific fluorescent nanoprobes. Specifically, nanomaterial‐based H2S probes have emerged as promising candidates for real‐time detection and imaging. In contrast to their organic molecule‐based counterparts, they offer higher versatility in imaging modes due to their unique optical properties, improved photostability and solubility within physiological fluids, as well as easily modifiable surfaces and tuneable structures for improved specificity. Recently, many nanomaterial‐based probes, ranging from inorganic nanoparticles to self‐assembled nanocomposites, have been developed. These have, for the most part, achieved sensitive and specific endogenous H2S detection and in vivo imaging. In this review, we evaluate five different nanomaterials currently being researched to detect and image endogenous H2S within the last 5 years. Furthermore, analytical methods associated with the various signal outputs, current challenges in H2S nanoprobe design, and possible future research interests are outlined and discussed.

show abstract

A Cu²⁺-doped two-dimensional material-based heterojunction photoelectrode: application for highly sensitive photoelectrochemical detection of hydrogen sulfide

Abstract: In this work, on the basis of a Cu2+-doped two-dimensional material-based heterojunction photoelectrode, a novel anodic photoelectrochemical (PEC) sensing platform was constructed for highly sensitive detection of endogenous H2S.

Cited by 13 publications

References 40 publications

Turning on the Photoelectrochemical Responses of Cd Probe-Deposited g-C₃N₄ Nanosheets by Nitrogen Plasma Treatment toward a Selective Sensor for H₂S

Turning on the Photoelectrochemical Responses of Cd Probe-Deposited g-C₃N₄ Nanosheets by Nitrogen Plasma Treatment toward a Selective Sensor for H₂S

Cu(II)-Grafted Carbon Nitride Quantum Dots with High Crystallinity for Photoelectrochemical Detection Application

Synthetic nanoprobes for biological hydrogen sulfide detection and imaging

Contact Info

Product

Resources

About

A Cu2+-doped two-dimensional material-based heterojunction photoelectrode: application for highly sensitive photoelectrochemical detection of hydrogen sulfide

Abstract: In this work, on the basis of a Cu2+-doped two-dimensional material-based heterojunction photoelectrode, a novel anodic photoelectrochemical (PEC) sensing platform was constructed for highly sensitive detection of endogenous H2S.

Cited by 13 publications

References 40 publications

Turning on the Photoelectrochemical Responses of Cd Probe-Deposited g-C3N4 Nanosheets by Nitrogen Plasma Treatment toward a Selective Sensor for H2S

Turning on the Photoelectrochemical Responses of Cd Probe-Deposited g-C3N4 Nanosheets by Nitrogen Plasma Treatment toward a Selective Sensor for H2S

Cu(II)-Grafted Carbon Nitride Quantum Dots with High Crystallinity for Photoelectrochemical Detection Application

Synthetic nanoprobes for biological hydrogen sulfide detection and imaging

Contact Info

Product

Resources

About

A Cu²⁺-doped two-dimensional material-based heterojunction photoelectrode: application for highly sensitive photoelectrochemical detection of hydrogen sulfide

Turning on the Photoelectrochemical Responses of Cd Probe-Deposited g-C₃N₄ Nanosheets by Nitrogen Plasma Treatment toward a Selective Sensor for H₂S

Turning on the Photoelectrochemical Responses of Cd Probe-Deposited g-C₃N₄ Nanosheets by Nitrogen Plasma Treatment toward a Selective Sensor for H₂S