COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2024
·
IF 4.9
Jin Wang,Xu Guo,Qixiang Zhou,Yan Cai,Bing Lu,Yang Wang,Yong Yao
The functional photoelectric materials based on bismuth oxyhalides (BiOX, X = Cl, Br and I) have been widely used in the field of photo-electrochemistry (PEC) due to their excellent physical, chemical and optical properties. Herein, a series of BiOX nanoflowers conjugated water-soluble pillar[5]arenes functionalized Au (Au@WP5/BiOX) modified PEC sensor are constructed and investigated for the PEC detection of serotonin. Upon exploring the physical properties, such as size, visible light absorption capacity, band gap and impedance, of the three BiOX materials, it is discovered that BiOBr is more effective in detecting 5-HT due to its high redox ability, moderate band gap (∼2.03 eV), and low impedance. BiOBr can provide a high and stable starting photocurrent compared to the other two bismuth oxyhalides. When used in acidic or neutral environments, 5-HT with a positive charge can undergo electrostatic adsorption and host-guest complexation behavior with WP5, which has a negative charge. By using WP5, the recognition ability of the material to 5-HT molecules can be enhanced, and the adsorption of 5-HT molecules on Au@WP5/BiOBr can be accelerated. The local surface plasmon resonance effect (LSPR) of gold nanoparticles (Au NPs) can accelerate the electrochemical reaction rate and charge transfer rate, which ultimately leads to the amplification of the photocurrent signal. As a result, the 5-HT detection sensor based on Au@WP5/BiOBr has a wide detection range from 0.01 to 100 μM and a low detection limit of 3 nM (S/N = 3) compared to other sensors, including Au@WP5/BiOCl and Au@WP5/BiOI. The proposed PEC sensor also exhibits good stability and selectivity, making it a promising strategy for detecting biological small molecules using pillar[5]arene functionalized PEC active materials.
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高影响因子
ADVANCED MATERIALS
·
2022
·Vol. 35
·期 8
·2209002
·
IF 32.086
Jibin Zhang,Tiankai Zhang,Zhuangzhuang Ma,Fanglong Yuan,Xin Zhou,Heyong Wang,Zhe Liu,Jian Qing,Hongting Chen,Xinjian Li,Shijian Su,Jianing Xie,Zhifeng Shi,Lintao Hou,Chongxin Shan
Pure-red perovskite LEDs (PeLEDs) based on CsPb(Br/I) 3 nanocrystals (NCs) usually suffer from a compromise in emission efficiency and spectral stability on account of the surface halide vacancies-induced nonradiative recombination loss, halide phase segregation, and self-doping effect. Herein, a “halide-equivalent” anion of benzenesulfonate (BS – ) is introduced into CsPb(Br/I) 3 NCs as multifunctional additive to simultaneously address the above challenging issues. Joint experiment-theory characterizations reveal that the BS – can not only passivate the uncoordinated Pb 2+ -related defects at the surface of NCs, but also increase the formation energy of halide vacancies. Moreover, because of the strong electron-withdrawing property of sulfonate group, electrons are expected to transfer from the CsPb(Br/I) 3 NC to BS – for reducing the self-doping effect and altering the n-type behavior of CsPb(Br/I) 3 NCs to near ambipolarity. Eventually, synergistic boost in device performance is achieved for pure-red PeLEDs with CIE coordinates of (0.70, 0.30) and a champion external quantum efficiency of 23.5%, which is one of the best value among the ever-reported red PeLEDs approaching to the Rec. 2020 red primary color. Moreover, the BS – -modified PeLED exhibits negligible wavelength shift under different operating voltages. This strategy paves an efficient way for improving the efficiency and stability of pure-red PeLEDs.
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高影响因子
Reaction Kinetics Mechanisms and Catalysis
·
2025
·
IF 1.7
Badr Shahad Ali,Bai Yang,Gu Deng,He Jianing,Badr Rafal Ali
In this study, we explored the photocatalytic degradation of methyl orange (MO) and Rhodamine B (RhB) via 2.0 wt% I–Bi 2 S 3 , ZnIn 2 S 4 , and their composite ZnIn 2 S 4 /2.0 wt% I–Bi 2 S 3 under visible light irradiation. While 2.0 wt% I–Bi 2 S 3 revealed insignificant photocatalytic activity, ZnIn 2 S 4 showed outstanding efficiency, degrading 94.7% of MO in 150 min and 98.9% of RhB in just 35 min. The composite achieved even better performance, 95% MO degradation (150 min) and 99.7% RhB degradation (35 min), demonstrating a synergistic effect between 2.0 wt% I–Bi 2 S 3 and ZnIn 2 S 4 . TEM, SEM, XRD, XPS, UV–Vis DRS, ESR, photoelectrochemistry, and PL tests were performed to characterize the structure, morphology, and separation efficiency of the products. According to kinetic studies, the photocatalytic degradation kinetics of rhodamine B and methyl orange exhibited various patterns. For Rhodamine B (RhB), a nonlinear exponential decay function was applied to obtain the rate constants, yielding k = 0.17186 ± 0.00147 min⁻ 1 for ZnIn 2 S 4 and k = 0.25567 ± 0.00405 min⁻ 1 for the composite with R 2 = 0.99. This outcome indicates that RhB degradation follows first order kinetics closely. While the degradation of methyl orange fulfills R 2 ≈ 0.93, which means it is less consistent with the first order model. The computed rate constants were k = 0.01171 ± 0.00157 min⁻ 1 for ZnIn 2 S 4 and k = 0.01362 ± 0.00184 min⁻ 1 for the composite. MO degradation is characterized by pseudo-first order behavior due to the deviation from linearity of a first order reaction. The boost in photocatalytic degradation was related to the reduction in electron–hole recombination that resulted from the creation of a heterostructure and a doping strategy. This study shows the potential of ZnIn 2 S 4 -based composites as high-performance photocatalysts for environmental remediation, displaying an exceptional solution for effectively eliminating hazardous organic dyes from wastewater.
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高影响因子
APPLIED ORGANOMETALLIC CHEMISTRY
·
2017
·Vol. 32
·期 1
·e3946
·
IF 2.319
Xingquan Xiong,Zhongke Tang,Zhaohong Sun,Xiaoqing Meng,Sida Song,Zhilong Quan
An eco-efficient, green, and multi-gram procedure is presented for one-pot multicomponent synthesis of N -substituted 1,2,3-triazoles by using waste fishbone powders supported CuBr (FBPs-CuBr) as catalyst. FBPs-CuBr is found to be an efficient heterogeneous catalyst and a series of 1,2,3-triazoles are obtained in moderate to excellent yields in water under MW irradiation (70–98%). It can be separated conveniently by a simple filtration and reused at least seven consecutive runs with a slight drop in the product yields. Furthermore, the desired product still could be obtained in 80% yield when the scale of the reaction was increased to 40.0 mmol.
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高影响因子
CHEMOSPHERE
·
2022
·
IF 8.943
Cheng-Feng Liang,Song-Hai Wu,Yu-Le Wang,Zhi Xu,Yong Liu,Hai-Tao Ren,Shao-Yi Jia,Xu Han
Thiosulfate (S 2 O 3 2− ) is an important ligand to complex metal cations, however, the reactivity of metal-thiosulfate complexes has barely been mentioned. In this study, the reactivity of the Cu(II)–S 2 O 3 2− system in the reduction of Cr(VI) was investigated. Kinetic results show that the reduction rates of Cr(VI) decrease with increasing pH values from 3.0 to 5.0, and 94.3% and 97.5% of 10 mg L −1 Cr(VI) was rapidly reduced within 1 min at pH 3.0 and within 30 min at pH 5.0, respectively at the molar ratio of Cu(II):S 2 O 3 2− of 0.05. We rule out the contributions of S species of tetrathionate (S 4 O 6 2− ) and sulfite (SO 3 2− ) to Cr(VI) reduction and point out that the produced Cu(I) in the Cu(II)–S 2 O 3 2− system is the key reductant that mediates the reduction of Cr(VI). We suggest that complexation between Cu(II) and S 2 O 3 2− with the formation of Cu II (S 2 O 3 ) 2 2− is the pre-requisite for the formation of Cu I (S 2 O 3 ) n 1−2n , which plays an important role in Cr(VI) reduction, accompanied by the re-oxidation of Cu(I) to Cu(II) by Cr(VI), achieving the rapid redox cycling of Cu(II)–Cu(I)–Cu(II). Such a redox cycle also mediates the denitrification process of NO 2 − to NH 3 /NH 4 + under weakly acidic conditions. This study enriches our understanding on the reducing reactivity of the Cu(II)–S 2 O 3 2− system and the importance of the Cu(II)–Cu(I)–Cu(II) redox cycle towards environmental oxidizing contaminants.
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PubMed
高影响因子
RSC Advances
·
2023
·Vol. 13
·期 9
·5993-6001
·
IF 3.9
Zhi Jiang,Hezhuang Liu,Jihua Zou,Yixuan Huang,Zhaoquan Xu,Denys Pustovyi,Svetlana Vitusevich
High-quality CsCu2X3 and Cs3Cu2X5 (X = Cl, Br, I) nanocrystals (NCs) exhibit excellent optoelectronic, physical, and chemical properties for detection of UV radiation due to large carrier mobility and lifetime, and heavy atoms. The nanocrystal materials can be prepared via a low-cost and simple solid-state synthesis. However, poor reproducibility and complex synthesis methods of obtaining perovskite NC thin films represent a drawback for the fabrication of the commercial photoelectric device. To address these issues, we develop highly stable CsCu2X3 and Cs3Cu2X5 NC materials using a facile solid-state reaction method for the scale-up production of halogen lead-free perovskites. We suggest a distinctive way to design a series of nanocrystalline perovskites using short-term synthesis and study the mechanism of perovskite formation using thermal solid-state synthesis. These all-inorganic and lead-free CsCu2X3 and Cs3Cu2X5 exhibit large photoluminescence quantum yields (PLQYs) up to 95.2%. Moreover, flexible paper photodetectors based on this series of lead-free perovskites show strong photoselectivity and bending stability at 254 nm, 365 nm, and 405 nm wavelengths. High-quality responses with a responsivity of 1.1 × 10−3 A W−1 and detectivity of 2.71 × 109 jones under UV illumination (10 μW cm−2) at a bias voltage of 5 mV are demonstrated. These results open prospects for designing photodetectors, LEDs, and other photosensitive devices.
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PubMed
高影响因子
JOURNAL OF DAIRY SCIENCE
·
2022
·
IF 4.225
Bolong Fang,Juan Peng,Gan Zhang,Keyu Xing,Wenyao Chen,Daofeng Liu,Shan Shan,Yonghua Xiong,Weihua Lai
ABSTRACT Escherichia coli O157:H7 is a type of hazardous bacteria in the field of food safety. A sensitive and effective method is urgently needed to detect it, avoiding enormous harm for the human health. In this study, we synthesized stable Ag + -doped gold nanoclusters (Ag-AuNC) with a fluorescence intensity 4.8 times stronger than that of AuNC. It was further demonstrated that Ag 0 existing in the AuNC core and a fraction of Ag + anchored on the AuNC shell eliminated the surface defects and improved the luminescent properties of AuNC. A combination of I 2 and I − was used to quench fluorescence-enhanced Ag-AuNC, which was first applied in ELISA for detecting E. coli O157:H7 to improve the sensitivity. In the presence of E. coli O157:H7, the biotinylated anti- E. coli O157:H7 mAb and streptavidin-alkaline phosphatase would be immobilized and catalyze l -ascorbic acid 2-phosphate sesquimagnesium salt hydrate to produce ascorbic acid. After addition of KIO 3 , I 2 /I − were generated. The I 2 could trigger oxidative etching of Ag-AuNC and I − could combine with Ag + to decrease the Ag + concentration of Ag-AuNC, which resulted in fluorescence quenching of Ag-AuNC. Under optimal conditions, the linear range of I 2 /I − -mediated fluorescence quenching of Ag-AuNC-based immunoassay for detecting E. coli O157:H7 was 3.3 × 10 3 to 10 6 cfu/mL, with a detection limit of 9.2 × 10 2 cfu/mL, 10.7-fold lower than that of the traditional ELISA. The proposed immunoassay exhibits excellent sensitivity, specificity, recovery, and accuracy, which is useful for quantitative detection of E. coli O157:H7 in food safety.
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高影响因子
Frontiers of Chemical Science and Engineering
·
2023
·Vol. 18
·期 2
·1-12
·
IF 4.5
Lu Jiangyan,Xiong Zhu,Cheng Yuhang,Long Qingwu,Dong Kaige,Zhang Hongguo,Luo Dinggui,Yu Li,Zhang Wei,Zhang Gaosheng
Thallium is a highly toxic metal, and trace amount of thallium(I) (Tl + ) in potable water could cause a severe water crisis, which arouses the exploitation of highly-effective technology for purification of Tl + contaminated water. This report proposes the multi-layered Prussian blue (PB)-decorated composite membranes (PB x @PDA/PEI-FP) based on the aminated filter papers for Tl + uptake. Extensively characterization by Fourier transform infrared spectrometer-attenuated total reflectance, scanning electron microscope, thermogravimetric analysis, X-ray photoelectron spectroscopy and X-ray diffraction were performed to confirm the in situ growth of cubic PB crystals on filter paper membrane surfaces via the aminated layers, and the successful fabrication of multi-layered PB overcoats via the increasing of aminated layers. The effect of PB layers on Tl + removal by PB x @PDA/PEI-FP from simulated drinking water was evaluated as well as the influence of different experimental conditions. A trade-off between PB decoration layer number and PB distribution sizes is existed in Tl + uptake by PB x @PDA/PEI-FP. The double-layered PB 2 @PDA/PEI-FP membrane showed the maximum sorption capacity, but its Tl + uptake performance was weakened by the acid, coexisting ions (K + and Na + ) and powerful operation pressure, during filtrating a large volume of low-concentrated Tl + -containing water. However, the negative effect of coexisting ions on the Tl + uptake could be effectively eliminated in weak alkaline water, and the Tl + removal was increased up to 100% without any pressure driving for PB 2 @PDA/PEI-FP membrane. Most importantly, PB 2 @PDA/PEI-FP displayed the high-efficiency and high-selectivity in purifying the Tl + -spiked Pearl River water, in which the residual Tl + in filtrate was less than 2 µg·L −1 to meet the drinking water standard of United States Environmental Protection Agency. This work provides a feasible avenue to safeguard the drinking water in remote and underdeveloped area via the energy-free operation.
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高影响因子
JOURNAL OF SOLID STATE CHEMISTRY
·
2025
·
IF 3.5
Yingxia Ma,Miaoshi Li,Tianze Li,Haijun Yang,Ruilin Zhang,Xiaofei Ye,Wenli Meng,Xiaojun Chai,Cuixia Li
Industrial wastewater containing heavy metal Ag(I) causes irreversible harm to human health through food chain, necessitating effective removal methods. According to hard-soft acids-bases (HSAB) theory, nitrogen (N) and sulfur (S) functional groups form stable chelates with Ag(I). In this study, 2-amino-5-sulfanyl-1,3,4-thiadiazole (AST) with three N and two S groups served as organic ligand, and zinc nitrate hexahydrate provided metal center, novel amorphous metal-organic framework (Zn-AST) rich in N and S groups was synthesized via a one-pot solvothermal method. Batch experiments assessed the Zn-AST adsorption properties for Ag(I) in aqueous solutions. In addition, density-functional theory, frontier orbital theory, and molecular electrostatic surface potential analyses were used to elucidate the synthesis and adsorption mechanisms. The maximum adsorption capacity of Zn-AST for Ag(I) was 2932.91 mg/g. The Zn-AST exhibited good selectivity in the presence of Cu(II), Co(II), Ni(II), and Pb(II) ions, the removal rate for Ag(I) was 98.28 %, which was far higher than the values of other ions (all less than 10 %). The main adsorption mechanisms of Ag(I) by the Zn-AST involved electrostatic interactions, the formation of Ag–S bonds, and chelation between Ag and nitrogen functional groups. This study offers a viable strategy for developing unique adsorbents for Ag(I) removal from wastewater.
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高影响因子
MICROCHIMICA ACTA
·
2019
·Vol. 186
·期 7
·1-10
·
IF 5.479
Lv Hui,Zhang Xiaobo,Li Yueyun,Ren Yong,Zhang Chunyan,Wang Ping,Xu Zhen,Li Xinjin,Chen Zhiwei,Dong Yunhui
A voltammetric sandwich immunoassay is described for the biomarker cardiac troponin I (cTnI). The gold nanocube-functionalized graphene oxide (AuNC/GO) is employed as a substrate to accelerate the electron transfer and to immobilize more primary antibodies. It also employs composite materials prepared from bimetallic gold/silver core-shell nanocubes and nitrogen and sulfur co-doped reduced graphene oxide as the signal amplifier. The introduction of N and S into GO enlarges the active surface and accelerates the electron transfer rate. Such unique characteristics render the material an effective support substrate to load more Au@AgNC and to immobilize an increasing number of second antibodies via Ag-N bonds. After specific binding with cTnI, the immunosensor was incubated in a labeled cTnI secondary antibody solution. The amperometric signal change is then measured at 0.34 V (vs. SCE) using o-phenylenediamine and hydrogen peroxide as an electrochemical probe. Response is linear in the concentration range from 100 fg∙mL −1 to 250 ng∙mL −1 , and the detection limit is 33 fg∙mL −1 .
Schematic presentation of cardiac troponin I (cTnI) electrochemical immunosensor based on gold nanocube-functionalized graphene oxide (AuNC/GO) as substrate material, bimetallic gold/silver core-shell nanocubes and nitrogen and sulfur co-doped reduced graphene oxide (Au@AgNC/N, S-rGO) as signal amplifier, and hydrogen peroxide (H 2 O 2 ) and o-phenylenediamine (o-PD) as redox probe.
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高影响因子
DALTON TRANSACTIONS
·
2023
·Vol. 52
·期 23
·7893-7905
·
IF 4
Lingjun Shu,Jingxuan Yin,Zhemin Gon,Chengwei Gao,Yongxing Liu,Xiaolong Zhou,Hongli Ma,Xianghua Zhang,Xiang Shen,Shixun Dai,Changgui Lin,Qing Jiao
The fabrication of all electrolytes from noncombustible ceramic materials offers a superior option for providing safer and higher-capacity batteries to fulfill future energy needs. To achieve a competitive performance with combustible liquid electrolytes used in commercial Li-ion batteries, the creation of ceramic material compositions with a high electrical conductivity is necessary. Here, we report that co-doping with W and halogens results in a superconductivity of 13.78 mS cm−1 in a cubic-phase Na3SbS4 glass ceramic electrolyte. After undergoing high-temperature heat treatments, the W ions in the electrolyte can facilitate the replacement of S atoms with halogens, introducing many Na vacancies. The samples also had a high degree of cycling stability. An excellent glass ceramic electrolyte for Na ion batteries will be constructed for Na3SbW0.25Cl0.25S4.
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高影响因子
ACTA BIOCHIMICA ET BIOPHYSICA SINICA
·
2025
·Vol. 57
·期 7
·1115
·
IF 3.4
Yingchun Luo,Wenbo Ma,Qi Kang,Han Pan,Ling Shi,Jiudong Ma,Jiahui Song,Dongmei Gong,Kai Kang,Xuexin Jin
Diabetes mellitus (DM) is a risk factor for the development of atrial fibrillation (AF). The action potential duration (APD) has been demonstrated to be prolonged in the atrium of diabetic mice. In contrast, the APD is generally shortened in AF patients. It is unclear what change occurs in the atrial APD of diabetic patients. In this study, we explore the APD change of atrial myocytes from diabetic patients and the underlying molecular mechanisms. The whole-cell patch-clamp technique is used to detect single-cell electrical activity in diabetic and nondiabetic human samples. The results show that both APD 50 and APD 90 , the APD at 50% and 90% repolarization, are increased in diabetic patients compared with those in nondiabetic controls. The density of late sodium current ( I NaL ) in the atrial myocytes of diabetic patients is greater than that in the myocytes of nondiabetic patients. The expression of receptor for advanced glycation end products (RAGE) is increased in the atria of diabetic patients. In cultured HL-1 cells, high glucose (HG) treatment increases I NaL , and the expression of RAGE prolongs APD. The siRNA-mediated knockdown of RAGE reduces the I NaL and shortens the APD. The APD is prolonged in the atria of diabetic patients because of the upregulation of RAGE and the subsequent increase in I NaL . Our findings provide novel insights into atrial electrical remodeling in diabetic patients.
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高影响因子
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