Electrochemiluminescence of 1,8-Naphthalimide-Modified Carbon Nitride for Cu2+ Detection

Liu, Fengyu; Zhang, Tong-Kai; Zhao, Yilong; Ning, Hongxia; Li, Fusheng

doi:10.1007/s41664-021-00203-x

Cited by 11 publications

(6 citation statements)

References 52 publications

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“…Moreover, the limit of detection (LOD) was estimated to be 0.08 nM (S/N = 3). All these results demonstrate that this C 3 N 4 NT-Air/K 2 S 2 O 8 ECL system has high sensitivity and wide linear range, which is superior to other reported ECL methods for Cu 2+ detection ( Table S1 ) [ 46 , 47 , 48 , 49 , 50 , 51 , 52 , 53 , 54 ].…”

Section: Resultsmentioning

confidence: 69%

A Unique, Porous C3N4 Nanotube for Electrochemiluminescence with High Emission Intensity and Long-Term Stability: The Role of Calcination Atmosphere

Zhao

Zou²,

Liang³

et al. 2022

Molecules

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Developing excellent strategies to optimize the electrochemiluminescence (ECL) performance of C3N4 materials remains a challenge due to the electrode passivation, causing weak and unstable light emission. A strategy of controlling the calcination atmosphere was proposed to improve the ECL performance of C3N4 nanotubes. Interestingly, we found that calcination atmosphere played a key role in specific surface area, pore-size and crystallinity of C3N4 nanotubes. The C3N4 nanotubes prepared in the Air atmosphere (C3N4 NT-Air) possess a larger specific surface area, smaller pore-size and better crystallinity, which is crucial to improve ECL properties. Therefore, more C3N4•− excitons could be produced on C3N4 NT-Air, reacting with the SO4•− during the electrochemical reaction, which can greatly increase the ECL signal. Furthermore, when C3N4 nanotube/K2S2O8 system is proposed as a sensing platform, it offers a high sensitivity, and good selectivity for the detection of Cu2+, with a wide linear range of 0.25 nM ~ 1000 nM and a low detection limit of 0.08 nM.

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Section: Resultsmentioning

confidence: 69%

A Unique, Porous C3N4 Nanotube for Electrochemiluminescence with High Emission Intensity and Long-Term Stability: The Role of Calcination Atmosphere

Zhao

Zou²,

Liang³

et al. 2022

Molecules

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“…It was seen that the maximum emission appeared around 470 nm (Figure b), which is consistent with the ECL emission spectra of the sole CN-modified electrode (Figure S4, Supporting Information). Therefore, the ECL luminophor should be the excited-state CN. − The ECL signals of three repeats of all cases under −1.5–0 V potential were shown in Figure c. The similar ECL intensities of the three repeats indicate the high stability of the ECL probe.…”

Section: Resultsmentioning

confidence: 85%

Electron Transfer Efficiency-Regulated Electrochemiluminescence for Rapid Crystallinity Analysis in Layered Materials

Jia,

Fan,

et al. 2024

Anal. Chem.

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The electrochemiluminescence (ECL) signal is largely determined by the electron transfer efficiency. Therefore, in the nanomaterial-involved ECL system, the structure-related electron distribution could affect the electron transfer efficiency and further alter the ECL intensity. These features make the design of versatile ECL-based analytical techniques for probing the correlated structure possible. And it is generally accepted that the increased crystallinity of nanomaterials usually leads to a uniform electron distribution, which provides higher conductivity. Therefore, the crystallinity-improved conductivity could facilitate electron transfer, promote the electrochemical activity of support materials, and boost the efficiency of the ECL reaction. In this study, we have demonstrated that the ECL signal of the graphitic carbon nitride reporter was proportional to the crystallinity of layered double hydroxides (LDHs), which meets the supposition well. On the basis of this phenomenon, an ECL-based crystallinity analysis approach has been established using CdAl-LDHs as the model materials. The universality of this proposed technique was further validated by the rapid and accurate crystallinity determination of ZnAl-LDH samples with diverse crystallinities. This work not only contributes an alternative to the X-ray diffraction technique for the rapid screening of crystallinity in layered materials but also opens a new avenue for the design of ECL-based structure analysis techniques toward nanomaterials and even organic materials by involving electron transfer regulation correlation.

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“…It can be seen that interfering agents (10-fold to the Cu 2+ concentration) caused a very slight quenching effect on the ECL intensity (Figure D), which proved that the prepared sensor has high specificity for Cu 2+ . The reasons for the high specificity for Cu 2+ may be due to the redox potentials of Cu 2+ /Cu [0.159 eV versus normal hydrogen electrode (NHE)] being more positive than other metal ions (Table S4 of the Supporting Information); therefore, the electron transfer between Cu 2+ and the C 3 N 4 nanoflower is easier. ,, All of these results indicate that the C 3 N 4 NF-550/K 2 S 2 O 8 sensor possesses great application potential in Cu 2+ detection.…”

Section: Resultsmentioning

confidence: 99%

Crystallization Regulation Engineering in the Carbon Nitride Nanoflower for Strong and Stable Electrochemiluminescence

Zhao

Liang

Zou

et al. 2023

ACS Appl. Mater. Interfaces

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Cathode electrochemiluminescence (ECL) of C 3 N 4 material has suffered from weak and unstable ECL emission for a long time, which greatly limits its practical application. Herein, a novel approach was developed to improve the ECL performance by regulating the crystallinity of the C 3 N 4 nanoflower for the first time. The high-crystalline C 3 N 4 nanoflower achieved a pretty strong ECL signal as well as excellent long-term stability compared to low-crystalline C 3 N 4 when K 2 S 2 O 8 was used as a co-reactant. Through the investigation, it is found that the enhanced ECL signal is attributed to the simultaneous inhibition of K 2 S 2 O 8 catalytic reduction and enhancement of C 3 N 4 reduction in the high-crystalline C 3 N 4 nanoflower, which can provide more opportunities for SO 4• − to react with electro-reduced C 3 N 4 • − , and a new "activity passivation ECL mechanism" was proposed, while the improvement of the stability is mainly ascribed to the long-range ordered atomic arrangements caused by structure stability in the high-crystalline C 3 N 4 nanoflower. As a benefit from the excellent ECL emission and stability of high-crystalline C 3 N 4 , the C 3 N 4 nanoflower/K 2 S 2 O 8 system was employed as a Cu 2+ detection sensing platform, which exhibited high sensitivity, excellent stability, and good selectivity with a wide linear range from 6 nM to 10 μM and a low detection limit of 1.8 nM.

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Electrochemiluminescence of 1,8-Naphthalimide-Modified Carbon Nitride for Cu2+ Detection

Cited by 11 publications

References 52 publications

A Unique, Porous C3N4 Nanotube for Electrochemiluminescence with High Emission Intensity and Long-Term Stability: The Role of Calcination Atmosphere

A Unique, Porous C3N4 Nanotube for Electrochemiluminescence with High Emission Intensity and Long-Term Stability: The Role of Calcination Atmosphere

Electron Transfer Efficiency-Regulated Electrochemiluminescence for Rapid Crystallinity Analysis in Layered Materials

Crystallization Regulation Engineering in the Carbon Nitride Nanoflower for Strong and Stable Electrochemiluminescence

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