JOURNAL OF THE CHINESE CHEMICAL SOCIETY
·
2019
·Vol. 66
·期 10
·1311-1317
·
IF 1.188
Jinyun Peng,Qing Huang,Yuxia Liu,Fengping Liu,Cuizhong Zhang,Yingying Huang,Wei Huang
In this article, the fabrication and characterization of a photoelectrochemical (PEC) rifampicin sensor based on graphene oxide grafted with Ni tetraamino phthalocyanine was described, which presents an excellent PEC activity, sensitivity, and material stability. The synthesized graphene oxide grafted with Ni tetraamino phthalocyanine was characterized using ultraviolet–visible (UV–vis), Fourier transform infrared (FTIR), scanning electron microscopy (SEM), and transmission electron microscopy (TEM) analyses. Specifically, detection for rifampicin was based on the reduction of photocurrent caused by binding of the analyte to the sensing electrode surface. The fabricated sensor was characterized in a broad linear response range (0.025–71.3 μM) and with a low detection limit (2.5 nM), outperforming the previously reported sensors and thus being well suited for quality control and other applications, as confirmed by successful real-life sample testing.
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DOI
高影响因子
Journal of Environmental Chemical Engineering
·
2025
·
IF 7.2
Di Wu,Yilin Wang,Zhifang Liu,Caiyu Ge,Jiejun Li,Xinyi Li,Yixi Xie,Pengcheng Zhao,Junjie Fei
Rifampicin (RFP) is an emerging environmental pollutant that exists in natural waters due to discharged from the medical and pharmaceutical industries, posing potential risks to aquatic life and human health. Developing highly sensitive detection techniques for RFP is essential for environmental monitoring and public health protection. In this work, Mn 2 O@Zn-NC was synthesized using in-situ growth and pyrolysis methods. Rod-like MnO 2 providing dispersed sites for the growth and crystallization of dodecahedral ZIF-8,with dodecahedral ZIF-8 tightly encapsulates MnO 2 . Additionally, the Zn-NC formed after high-temperature treatment effectively addresses the issue of poor conductivity in MnO 2 , which is conducive to the accurate display of RFP current signals. Using material of Mn 2 O@Zn-NC, a high-sensitivity electrochemical sensor was developed with a detection range of 0.040–100 µM and a limit of detection of 25 nM. This highly sensitive sensor can accurately detect RFP in environmental samples, with results comparable to those obtained using UV-Vis spectroscopy. This breakthrough electrochemical detector provides valuable opportunities for creating smart, efficient, and portable monitoring solutions.
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DOI
高影响因子
POLYMER BULLETIN
·
2015
·Vol. 73
·期 1
·97-112
·
IF 1.438
Teng Lijing,Nie Wangyan,Zhou Yifeng,Chen Pengpeng
In this paper, a series of star-shaped poly( l -lactide)s (s-PLLA) were synthesized via ring-opening polymerization of l -lactide (LLA) using erythritol as initiator. The structure and properties of s-PLLA were characterized by 1 H NMR, GPC and DSC. Then taking rifampicin (RIF) as the model drug, RIF-loaded s-PLLA microspheres were prepared using an oil-in-water emulsion solvent evaporation method. SEM and size analysis indicated that s-PLLA with high monomer/initiator molar ratios (s-PLLA98 and s-PLLA99) could form regular microspheres with smooth surface and have narrow size distributions, which hold the drugs well. The XRD spectra of the RIF-loaded microspheres demonstrated that s-PLLA and RIF were both in their amorphous state after the encapsulation process, which might be caused by the impediment effect of each other. The in vitro release profiles of the RIF-loaded microspheres showed that the s-PLLA99 microspheres were able to sustain the release of RIF for a considerable period of time (70–80 % within 180 h) and the release profiles of RIF from s-PLLA microspheres followed the Baker–Lonsdale model equation. Therefore, these biodegradable and biocompatible s-PLLA microspheres may find practical applications as drug delivery carriers.
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高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2023
·
IF 8.6
Yidan Sun,Ligang Xia,Yuling Wang,Weifeng Yao,Qiang Wu,Yulin Min,Qunjie Xu
Photocatalytic fuel cells (PFC) as a potential green technology has been widely reported. In this study, a PFC/peroxymonosulfate (PMS) system with sulfur-doped CuMnO/carbon felt as the cathode to promote the co-activation of PMS and H 2 O 2 was constructed for efficient rifampicin (RIF) wastewater purification and synchronous power generation. The experimental results demonstrate that sulfur introduction makes the specific surface area of CuMnO increase and the stability of the system improve. Compared with the PFC system alone, PFC/PMS system exhibited excellent RIF degradation performance in 15 min with a removal ratio of 96.9 % and a TOC removal ratio of 78.12 %. Free radical quenching experiment and EPR test results give certification of the fact that •OH, 1 O 2 , O 2 •− , and S O 4 · - played a crucial part in RIF degradation. Furthermore, the constructed system demonstrated stable electricity generation performance during the degradation process with a short-circuit current density of 0.57 mA cm −2 , open-circuit voltage of 2.75 V, and maximum power output of 0.78 mW cm −2 . This work provides a sustainable approach for organic wastewater purification with high mineralization ratio.
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高影响因子
Journal of Materials Chemistry A
·
2024
·Vol. 12
·期 10
·6014-6027
·
IF 10.7
Panpan Li,Jingde Luan,Longde Jiang,Yu Zhang,Wengang Liu,Zheng Yan,Xin Ke
High pressure wet ball milling and thermal polycondensation are used to prepare W-doped O-bridge carbon nitride (WOCN) for the rapid catalytic degradation of antibiotic rifampicin (RIF). The removal of rifampicin at a concentration of 150 mg L−1 in a dark environment reached 60% within 8 minutes and 92% after 40 minutes of visible light exposure. The rapid catalytic degradation of RIF benefits from the coupling effect of dark degradation with photocatalytic degradation, including the electron replenishment theory of dark degradation and the electrophilic attack under light irradiation. In the dark degradation reaction, the abundant delocalized electrons at the tungsten-oxygen insertion surface are captured by the dissolved oxygen to produce ˙O2−, part of which directly participates in RIF degradation, whereas the other part is oxidized to 1O2 by the holes at the carbon-rich cyano group surface and then participated in RIF degradation. The electrons consumed at the reaction site are continuously replenished through the O electron bridge, allowing RIF degradation to continue. In the photocatalytic degradation reaction, photogenerated electron holes are excited using visible light, which partly participate in the degradation of RIF through the above dark reaction pathway. Meanwhile, some photogenerated holes oxidize OH− to ˙OH and degrade RIF by electrophilic attack.
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DOI
高影响因子
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