DYES AND PIGMENTS
·
2024
·
IF 4.1
Yue Zhao,Xian Yang,Hongping Han,Luoyilan Zhang,Ke Cheng,Yujie Xiao,Xuan Tan,Hao Xue,Xue Zhang,Hong Zheng
N–S co-doped quantum carbon dots (N–S-CQD) were synthesized using a hydrothermal method with Artemisia annua L. as a precursor and dl -cysteine as the nitrogen-sulfur source. N–S-CQD can enhance the chemiluminescence (CL) intensity of KMnO 4 system, while sulfanilamide (SA) is capable of significantly inhibit the CL intensity of KMnO 4 -(N–S-CQD) system. Based on this finding, we developed a novel CL method for the determination of SA. Under the optimal conditions, SA could be accurately determined in the concentration range of 50–1600 μM with a limit of detection of 0.22 μM. The investigation of potential interferences and recovery rates confirmed the method's suitability for assessing biomass samples.
研究领域:
分析化学
·
生物医学
✓ 已验证
产品关联
DOI
高影响因子
SENSORS
·
2018
·Vol. 18
·期 3
·846
·
IF 2.475
Bao-Shan He,Xiao-Hai Yan
In this paper, we present a simple and feasible electrochemical sensor based on Au nanoparticle-functionalized graphene for the determination of sulfanilamide. Au nanoparticles were deposited on graphene, which acted as a platform to prepare excellent nanocomposites. Attributed to the graphene’s large surface area and the Au nanoparticles’ strong conductivity, many sulfanilamide molecules were enriched on the sensor surface and the signal response became more sensitive. Under the optimal conditions, the electrochemical sensors could be used for the efficient detection of sulfanilamide. Good linearity was observed in the range of 0.1–1000 μmol·L−1and the detection limit was 0.011 μmol·L−1. Most importantly, the Au nanoparticle-functionalized graphene-modified electrode could be successfully applied for the detection of sulfanilamide in animal meat, and exhibited good stability, acceptable recovery, and offered a promising platform for point-of-care detecting in real samples.Keywords:electrochemical sensor;Au nanoparticles;graphene;sulfanilamide
研究领域:
分析化学
·
纳米技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2020
·
IF 5.774
Jinxin Xie,Weirui Chen,Yanfeng Lv,Haoyao Chen,Xukai Li,Laisheng Li
In this work, a hollow mesoporous CeO x @SiO 2 was synthesized and used to promote sulfanilamide (SA) mineralization in ozonation . SA mineralization was promoted to 68.2% by O 3 /CeO x @SiO 2 in 120 min, but only 30.0% in O 3 process. O 3 /CeO x @SiO 2 behaved the better at acidic and alkaline condition than that at neutral condition. CeO x @SiO 2 had the great ability in enhancing O 3 utility rate. Silanol (Si OH) in pore channel of SiO 2 shell was non-reactive with O 3 but could provide transmission way for O 3 to reach the inner CeO x core. Lewis sites, oxygen vacancies and surface hydroxyl groups induced by CeO x favored for the activation of O 3 . The excess electron at oxygen vacancies would be transferred to the absorbed O 3 molecular, which then generated reactive oxygen species (ROS) to mineralize SA. Hydroxyl radicals ( OH) and superoxide radicals ( O 2 − ) were the main ROS, which were recorded by EPR. The interfacial electron transfer process was revealed by LSV and ESI characterizations. SA degradation intermediates were also identified by HPLC-MS and IC, a possible degradation pathway was proposed. Moreover, CeO x @SiO 2 showed a good reusability, no obvious decline of TOC removal was found in four times’ uses. Water matrix would complete ROS with SA, which inhibited the SA removal of both O 3 and O 3 /CeO x @SiO 2 processes, but the better TOC removal efficiency was still obtained by O 3 /CeO x @SiO 2 in actual water.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
International Journal of Electrochemical Science
·
2023
·
IF 1.5
Hao Li,Xinmou Kuang,Xiaolan Shen,Jianwei Zhu,Botao Zhang,Hua Li
Owing to its high hardness, high chemical inertness, and good biocompatibility, nanodiamond (ND) has recently been increasingly used in electrochemical analysis. In this work, a comparative study of voltammetric detection of sulfanilamide using a bare glassy carbon electrode (GCE) and ND-modified glassy carbon electrode (GCE-ND) was carried out. Scanning electron microscopy (SEM) and cyclic voltammetry (CV) analyses revealed that modification of a GCE with 100 gL of ND suspension (40 mg∙L -1 ) was the optimum condition in this study. The results of CV analyses with the [Fe(CN)6] 3- redox couple suggested the occurrence of a diffusion-controlled process on both electrodes. However, the GCE-ND exhibited a larger electroactive surface area and a higher heterogeneous electron transfer rate constant, which were approximately 2.11 and 5.05 times greater than those of the bare GCE, respectively. When applied to the detection of sulfanilamide solution using square wave voltammetry under the optimum conditions, the bare GCE showed a linear dynamic range of 1—80 mg∙L -1 (R 2 = 0.9994) with a detection limit of 0.744 mg∙L -1 , by contrast, the GCE- ND showed a linear dynamic range of 0.2-100 mg∙L -1 (R 2 = 0.9949) with a detection limit of 0.161 mg∙L -1 . The detection limit of the GCE-ND was as much as 78.4% lower than that of the bare GCE. Furthermore, interday detection experiments revealed that the GCE-ND had higher repeatability and accuracy than the bare GCE.
研究领域:
分析化学
·
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
ULTRASONICS SONOCHEMISTRY
·
2018
·
IF 6.012
Guowei Wang,Siyi Li,Xue Ma,Jing Qiao,Guanshu Li,Hongbo Zhang,Jun Wang,Youtao Song
A novel Z-scheme coated composite, Er 3+ :Y 3 Al 5 O 12 @Ni(Fe 0.05 Ga 0.95 ) 2 O 4 -Au-BiVO 4 , was designed for sonocatalytic degradation of sulfanilamide and fabricated by sol-hydrothermal and calcination methods. The prepared sample was characterized by X-ray diffractometer (XRD), transmission electron microscopy (TEM), scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), energy dispersive X-ray spectroscopy (EDX), UV–vis diffuse reflectance spectra (DRS), fourier transform infrared (FT-IR) spectra, Raman spectra and photoluminescence (PL) spectra. In Er 3+ :Y 3 Al 5 O 12 @Ni(Fe 0.05 Ga 0.95 ) 2 O 4 -Au-BiVO 4 , Ni(Fe 0.05 Ga 0.95 ) 2 O 4 and BiVO 4 form a Z-scheme sonocatalytic system, Er 3+ :Y 3 Al 5 O 12 as an up-conversion luminescence agent (from visible-light to ultraviolet-light) provides the ultraviolet-light for satisfying the energy demand of wide band-gap Ni(Fe 0.05 Ga 0.95 ) 2 O 4 and Au nanoparticles as co-catalyst forms more active sites to enrich electrons. Also, Au nanoparticles as conductive channels promotes the electrons (e − ) from conduction band of BiVO 4 to transfer to valence band of Ni(Fe 0.05 Ga 0.95 ) 2 O 4 . Due to the characteristics of valence state diversity, the Fe 3+ and V 5+ constitute a redox reaction recombination system, which can also push electrons (e − ) on conduction band of BiVO 4 to quickly transfer to valence band of Ni(Fe 0.05 Ga 0.95 ) 2 O 4 . The sonocatalytic activity of Er 3+ :Y 3 Al 5 O 12 @Ni(Fe 0.05 Ga 0.95 ) 2 O 4 -Au-BiVO 4 nanocomposite was detected through degradation of sulfanilamide under ultrasonic irradiation. A high sonocatalytic degradation ratio (95.64%) of sulfanilamide can be obtained when the conditions of 10.00 mg/L sulfanilamide, 1.00 g/L Er 3+ :Y 3 Al 5 O 12 @Ni(Fe 0.05 Ga 0.95 ) 2 O 4 -Au-BiVO 4 , 300 min ultrasonic irradiation and 100 mL total volume were adopted. Some factors such as ultrasonic irradiation time and cycle number on the sonocatalytic degradation efficiency are also investigated by using TOC and UV–vis spectroscopy. Subsequently, the effects of hydroxyl radicals ( OH) and hole scavengers were investigated to elaborate the mechanism. The researches show that the prepared Z-scheme Er 3+ :Y 3 Al 5 O 12 @Ni(Fe 0.05 Ga 0.95 ) 2 O 4 -Au-BiVO 4 coated composite displayed an excellent sonocatalytic activity in degradation of sulfanilamide under ultrasonic irradiation.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2024
·
IF 8.1
Guangfei Liu,Min Li,Rihong Gu,Lianfeng Wang,Huali Yu,Ruofei Jin,Jiti Zhou,Bin Ma
Incubation of iron-reducing bacteria with Fe(III) could generate •OH to decompose organic pollutants under redox fluctuation conditions. However, the Fe(III)/Fe(II) transformation efficiency and therefore yields of •OH production in systems using Fe(III)-bearing minerals as respiration substrate of bacteria is unsatisfying. Here, we showed that different iron- and iron-copper-based metal–organic frameworks (Fe-MOFs and FeCu-MOFs) can mediate electron transfer from Shewanella oneidensis MR-1 to O 2 through their Fe(III)/Fe(II) cycling during anoxic–oxic transition, resulting in generation of reactive oxygen species including •O 2 – , H 2 O 2 and •OH. While 3 g/L of MIL-101(Fe) demonstrated faster Fe(III)/Fe(II) cycling, better yields of •OH production (69.0 μmol/mmol Fe(II) oxidation) and sulfanilamide removal (81.5 % in 24 h) than iron-bearing minerals and the rest two Fe-MOFs (MIL-53(Fe) and MIL-88B(Fe)), Fe 0.75 Cu 0.25 -B surpassed the performance of MIL-101(Fe) and other FeCu-MOFs with different Fe/Cu ratios, which might be attributed to its larger surface area, higher amounts of associated Fe(II), and synergistic effects between Fe and Cu species. Moreover, both MIL-101(Fe) and Fe 0.75 Cu 0.25 -B maintained structure stability and persistent catalytic activity during four continuous redox cycles in 48 h, the •OH production and sulfanilamide degradation of which exceeded those of one-time operation in the same duration. This study revealed the efficacy of combining bacteria and MOFs for •OH production, and provided promising alternatives for oxidative degradation of contaminants.
研究领域:
环境科学
·
微生物学
·
材料科学
✓ 已验证
DOI
高影响因子
WATER RESEARCH
·
2019
·
IF 7.913
Jiangkun Du,Guangfeng Xiao,Yanxing Xi,Xiaowei Zhu,Fan Su,Sang Hoon Kim
This study presents a novel periodate oxidation system mediated by manganese oxides for the rapid removal of aqueous contaminants. The catalytic activation of periodate on manganese oxides was demonstrated as an efficient advanced oxidation system for degradation of sulfanilamide. The reactivity of manganese oxides with different Mn valence followed the order of MnO 2 >Mn 3 O 4 >Mn 2 O 3 , all of which showed extraordinary reusability during repeated activation of periodate. Sulfanilamide was rapidly degraded along with stoichiometric transformation of IO 4 − to IO 3 − , and both processes exhibited good linear correlations with the dosage of manganese oxides. While the degradation of sulfanilamide in the MnO 2 /IO 4 − system was accelerated at lower solution pH, it was only slightly affected by ionic strength, water anions and humic acid . In contrast to the homogeneous system of Mn 2+ /IO 4 − , sulfanilamide degradation was not influenced in oxic and anoxic environment. It was evidenced by quenching studies and EPR tests that both singlet oxygen ( 1 O 2 ) and iodate radicals (IO 3 • ) were generated when the metastable Mn(IV)-O-IO 3 interacted with sulfanilamide. The XPS spectra of Mn 2p and O 1s before and after reactions indicated that the catalytic activation of periodate on MnO 2 was not in company with the redox cycling of Mn(IV) species.
研究领域:
环境科学
·
化学工程
✓ 已验证
DOI
高影响因子
ADVANCED MATERIALS
·
2025
·
IF 26.8
Xiuling Li,Yuechuan Bi,Xiang Guan,Jiaqi Wang,Jinli Liu,Yingjie Zhao,Chunli Zhao,Zhuojian Li,Shurui Chi,Junnan Wang,Renjing Chen,Zixun Zhao,Zemin Wang,Xin Tong,Ninggui Ma,Han Liu,Zhiming Wang,Zongwen Liu,Yang Ren,Zhanhua Wei,Kebin Lin
Eco-friendly CsSnI 3 -based perovskite light-emitting diodes (PeLEDs) with the emission peak extending to the near-infrared-II (NIR-II) region hold tremendous potential for applications in biological monitoring, night vision, and optical communications. However, the various defects caused by the instability of Sn 2+ within the CsSnI 3 film, and the non-equilibrium carrier injection rate in the devices are the two major factors that limit the device performance. Here, we report high-performance NIR-II CsSnI 3 -based PeLEDs achieved by employing functional sulfaguanidine (SG) molecules. Due to the strong S═O─Sn coordination bonds, NH 2 ···I − hydrogen bonds could be formed between CsSnI 3 and SG, which effectively eliminated various Sn(II)-related defects in the CsSnI 3 film. Moreover, the SG molecules significantly improved the morphological uniformity and regulated the carrier injection balance, resulting in more balanced carrier injection that enhanced the effective radiation recombination rate. Consequently, the optimized CsSnI 3 -SG PeLEDs achieved a breakthrough external quantum efficiency (EQE) of 8.1%, which is the highest efficiency reported for CsSnI 3 -based PeLEDs to date.
研究领域:
光电子学
·
材料科学
·
钙钛矿发光二极管
·
近红外光子学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）