INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2025
·
IF 8.5
Haiping Yu,Yuanchun Qin,Brian Chen,Fan Song,Shenyang Deng,Lin Wen,Jiaji Pan,Dongying Hu
Fabrics tend to absorb moisture and foster bacterial growth during use, due to surface hydrophilic groups such as hydroxyl groups. Economically and environmentally, extending antibacterial efficacy through hydrophobic treatment proves highly viable. This study employed pressurized impregnation to load ZnO NPs onto polyester (PET) and cotton fabrics, subsequently modified by octadecyltrichlorosilane (OTS) spraying. Post-OTS treatment, the fabrics achieved water contact angles (WCA) of 148.74 ± 0.95° and 145.47 ± 1.13°, respectively. The composite coating displays substrate adaptability by resisting stains from ordinary liquids (tea, milk, coffee, vinegar, cola, etc.) and synthetic blood while maintaining natural breathability. Bacterial eradication is accomplished by synergistic methods, which include electrostatic interactions between ZnO NPs and bacteria, as well as light-induced reactive oxygen species (ROS), giving the fabrics dual antibacterial and hydrophobic properties. The material's antibacterial and hydrophobic qualities remain constant even after acid-base immersion, UV irradiation, mechanical friction, repeated washing, and ultrasonic treatment. This fully fluorine-free approach is environmentally beneficial, increasing fabrics' application possibilities in industries such as fabric manufacturing and medicine.
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Materials Today Chemistry
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2025
·
IF 6.7
Hongmei Liu,Boyue Zheng,Zhengxue Ge,Mengyun Liu,Caihong Tao,Fangbin Fan
The analysis and treatment of hazardous substances in food have long been constrained by the dual challenges of limited single-target recognition capability and low resource utilization efficiency. To overcome these limitations, this study developed an ionic liquid-hydrogel material using a polymerization technique. The material featured a stable porous nanostructure and exhibited dual functionality, enabling highly efficient photo-catalytic degradation and adsorptive extraction. Under optimized conditions, it achieved a degradation rate of over 90 % for the dye Amaranth and extraction recovery exceeding 85 % for three benzoylurea pesticides. Mechanistic studies using in-situ IR spectroscopy revealed that the material's efficient and synergistic pretreatment capability for the two distinct classes of pollutants was attributed to the high substrate specificity of its active sites, which ensured that the two pathways operated independently without interference, guaranteeing the reliability of the treatment process. In conclusion, the developed dual-functional material combining with the advantages of low cost, ease of preparation and environmental friendliness provided an innovative strategy for the simultaneous pretreatment of multiple food contaminants and represented a significant advancement in this field.
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CARBOHYDRATE POLYMERS
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2026
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IF 13.2
Hongxing Shi,Qian Zhao,Mingjie Han,Yin Li,Limin Wang,Jiying Men
Dye-contaminated wastewater from the textile and dyeing industries poses severe environmental and health risks due to the persistence and toxicity of synthetic dyes. To address this issue, sodium alginate (SA)-based composite gel microspheres were fabricated via ionic crosslinking with calcium chloride followed by acid exchange to enhance structural stability and adsorption performance. Two types of functionalized adsorbents were synthesized and optimized: SA modified, and with stearyltrimethylammonium chloride (SA/S-H) and SA co -functionalized with poly(sodium 4-styrenesulfonate) (SA/S/PS-H). Comprehensive characterization using scanning electron microscopy (SEM), Fourier-transform infrared spectroscopy (FT-IR) and X-ray photoelectron spectroscopy (XPS) confirmed the successful preparation and compositional uniformity of the adsorbents. Adsorption kinetics for methylene blue (MB) followed the pseudo-second-order model, reaching equilibrium within 6 h， while isotherm data fitted the Dubinin-Radushkevich (D-R) model. Notably, the incorporation of PSSS significantly enhanced the adsorption capacity; at 45 °C, SA/S/PS-H achieved a remarkable maximum adsorption capacity of 900.91 mg/g, compared to 612.61 mg/g for SA/S-H. The dominant adsorption mechanisms were identified as electrostatic attraction, micropore filling and hydrogen bonding. Furthermore, the microspheres showed excellent reusability despite the interference of co-existing cations. This study presents a simple and scalable approach for constructing high-performance bio-based adsorbents with significant potential for sustainable and practical treatment of dye-laden wastewater.
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Journal of Environmental Chemical Engineering
·
2026
·Vol. 14
·期 2
·121666
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IF 7.5
Jianjun Chen,Qian Zhao,Hongxing Shi,Ying Li,Limin Wang
The coexistence of cationic and anionic dyes in wastewater necessitates the development of amphoteric adsorbents. Herein, amphoteric hydrogel microspheres SA-S@PDA-H was successfully fabricated for their simultaneous removal. The microspheres were synthesized by crosslinking sodium alginate (SA) with Ca²⁺, followed by coating with polydopamine (PDA) and stearyl trimethyl ammonium chloride (STAC). The microspheres prepared through acid treatment to replace STAC was labeled SA-S@PDA-H, endowing the microspheres with enhanced adsorption capacity. FT-IR, SEM, zeta potential was utilized to characterize the structure and morphology of SA-S@PDA-H. The adsorption behavior and mechanism of SA-S@PDA-H for cationic and anionic dyes was investigated in depth. The results show SA-S@PDA-H exhibit 127.3 % of swelling ratio. The adsorption of SA-S@PDA-H for MB and MO reaches equilibrium at about 300 min followed by PSO model. The adsorption process of SA-S@PDA-H for MB and MO followed Temkin and Dubinin-Radushkevich model, respectively, and the maximum adsorption capacity displayed 869.1 mg/g at 45°C and 730.9 mg/g at 15°C, for MB and MO, respectively. MB adsorption increased with higher temperature and pH, while MO adsorption increased with lower temperature and pH. Adsorption of both dyes decreased at high ionic strength, and Cu 2 + and Fe 3+ had a significant inhibitory for MB than K + , while the inhibitory effects of SO 4 2- or CO 3 2- is more obvious for MO than Cl - . SA-S@PDA-H exhibited excellent adsorption performance for mixed cationic and anionic dyes through synergistic effects including electrostatic interactions, hydrogen bonds, π-π stacking and micropore filling. The microspheres maintained over 80 % removal efficiency after five consecutive adsorption-desorption cycles.
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DYES AND PIGMENTS
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2022
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IF 5.122
Yujiao Tu,Ze Liu,Lei Jiang,Yingying Xiang,Fei Song,Lifen Meng,Xiuling Ji,Lin Yuan
New coccine is one of the most used red colorants in foods. Due to its cytotoxicity, quantitative determination is very necessary. Herein, the ratiometric fluorescent and UV absorption dual-mode nanosensor , derived from fangchinoline and o-phenylenediamine, was successfully prepared by hydrothermal way. The prepared carbon dots with three colors were purified with dialysis, thin layer chromatography and chromatographic column. Highly green fluorescence of Fan,N-CDs was quenched by new coccine with inner filter effect. The dependence of the ratiometric fluorescent response on new coccine concentrations was found linear over the range of 0–12.5 μM and 20–55 μM with LOD of 30.12 nM and 54.85 nm, respectively. The linearity of UV absorption ranged from 0 to 45 μM with of LOD 1.98 nM. In addition, the nanosensor was used to determine new coccine in energy drinks, carbonated beverage, gum and ketchup. It provides a new insight on the detection of new coccine by the dual-mode nanosensor.
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Biosensors-Basel
·
2022
·Vol. 12
·期 5
·326
·
IF 5.743
Shuwen Cheng,Danyao Tang,Yi Zhang,Libin Xu,Kunping Liu,Kejing Huang,Zhengzhi Yin
A novel electrochemical sensor designed to recognize and detect tartrazine (TZ) was constructed based on a molecularly imprinted polydopamine (MIPDA)-coated nanocomposite of platinum cobalt (PtCo) nanoalloy-functionalized graphene oxide (GO). The nanocomposites were characterized and the TZ electrochemical detection performance of the sensor and various reference electrodes was investigated. Interestingly, the synergistic effect of the strong electrocatalytic activity of the PtCo nanoalloy-decorated GO and the high TZ recognition ability of the imprinted cavities of the MIPDA coating resulted in a large and specific response to TZ. Under the optimized conditions, the sensor displayed linear response ranges of 0.003–0.180 and 0.180–3.950 µM, and its detection limit was 1.1 nM (S/N = 3). The electrochemical sensor displayed high anti-interference ability, good stability, and adequate reproducibility, and was successfully used to detect TZ in spiked food samples. Comparison of important indexes of this sensor with those of previous electrochemical sensors for TZ revealed that this sensor showed improved performance. This surface-imprinted sensor provides an ultrasensitive, highly specific, effective, and low-cost method for TZ determination in foodstuffs.Keywords:platinum cobalt nanoalloy;molecularly imprinted polydopamine;graphene oxide;tartrazine;electrochemical sensor
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ANALYTICA CHIMICA ACTA
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2022
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IF 6.911
Shuangshou Wang,Wenzhi Li,Zhihong Yuan,Qiwen Jin,Zongpeng Ding,Xiaomeng Liu,Mingfu Ye,Jing Gu,Tingxuan Yan,Hongmei Chen,Yang Chen
The existing strategies for the determination of synthetic food colorants (FCs) in manufactured foods are highly relied on specialized instruments and skilled personnel which are limited by the high technical threshold and instrumentation cost. Herein, highly branched pipette tips (PTs) were fabricated as a robust all-in-one device for high-performance extraction and visual detection of FCs via handy aspiration and dispensing procedures of pipette controller. The density of extraction groups and inner specific surface area of PTs greatly increased after facile physical coating and subsequent layer-by-layer branching reactions, and the maximum increment in binding capacity of PTs was exceeded 300 times at 8–10 iterations of branching layers, enabling the PTs to be colored just by short-time extraction of FCs and to achieve the instrument-independent visual detection of FCs by virtue of their outstanding PT-SPE performance. As a proof-of-concept, the in-situ PT-based solid phase extraction (PT-SPE) with high recoveries (from 91.73 ± 4.76% to 99.90 ± 4.14%) and semiquantitative naked-eye detection of FCs (Allura red and brilliant blue) in real beverages were experimentally demonstrated to be highly feasible by comparison with classical techniques like spectrophotometry , HPLC , and mass spectrometry.
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MOLECULES
·
2022
·Vol. 27
·期 6
·2035
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IF 4.927
Jiao Jia,Hao Wu,Le Xu,Fengchun Dong,Yongtang Jia,Xi Liu
A nanofiber metal–organic framework filter, a polyacrylonitrile (PAN) nanofiber membrane composite with an iron/2-amino-terephthalic acid-based metal–organic framework (MIL101(Fe)-NH2), was prepared by one-step electrospinning. MIL101(Fe)-NH2was combined into the polymer nanofibers in situ. PAN-MIL101(Fe)-NH2composite nanofiber membranes (NFMs) were prepared from a homogeneous spinning stock containing MIL101(Fe)-NH2prebody fluid and PAN. Crystallization of MIL101(Fe)-NH2and solidification of the polymer occurred simultaneously during electrospinning. The PAN-MIL101(Fe)-NH2composite NFM showed that MIL101(Fe)-NH2was uniformly distributed throughout the nanofiber and was used to adsorb and separate acidic organic ionic dyes from the aqueous solution. The results of Fourier transform infrared spectroscopy, energy-dispersive X-ray spectroscopy, and X-ray diffraction analysis showed that MIL101(Fe)-NH2crystals were effectively bonded in the PAN nanofiber matrix, and the crystallinity of MIL101(Fe)-NH2crystals remained good, while the distribution was uniform. Owing to the synergistic effect of PAN and the MIL101(Fe)-NH2crystal, the PAN-MIL101(Fe)-NH2composite NFM showed a fast adsorption rate for acidic ionic dyes. This study provides a reference for the rapid separation and purification of organic ionic dyes from wastewater.Keywords:electrospinning;MIL101(Fe)-NH2;functional nanofibers;water treatment membrane
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MICROCHEMICAL JOURNAL
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2022
·
IF 5.304
Zhi-Yong Wu,Fu Zhang,Zhi Kuang,Fang Fang,Yan-Yan Song
This study proposed gradient zone electrophoresis on a paper-based analysis device (PAD) for sensitive and rapid colorimetric detection of multiple analytes with smartphone imaging. With experimental optimization, simultaneous stacking and separation of color pigments was successfully demonstrated in 60 s as visualized by real-time smartphone photography. Compared with isocratic zone electrophoresis, the separation was obviously improved. Meanwhile, due to the allowance of larger sample introduction volume in the proposed method, the band intensity was also largely enhanced. Practical application of this PAD method was demonstrated by detection of synthetic pigments in commercial beverages. With the enrichment capability of the proposed method, the signal intensity of brilliant blue and amaranth was enhanced by 60 and 180 times, respectively. The limits of detection (LOD) for the common food pigments brilliant blue and amaranth in beverages were 0.35 and 0.14 μg/mL, respectively. Thanks to the simultaneous separation and enrichment functions of this PAD method, not only a detection LOD close to that of a benchtop spectrophotometer can be simply achieved with a smartphone camera, but spectral interference could also be avoided in multi-component analysis.
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Analytical Methods
·
2022
·Vol. 14
·期 41
·4127-4132
·
IF 3.532
Lei Jiang,Lin Yuan,Ze Liu,Yingying Xiang,Fei Song,Lifen Meng,Yujiao Tu
Colorant tartrazine is widely used in the food industry, but its long-term and excessive consumption is harmful to human health. Therefore, it is necessary to establish a sensitive detection method for tartrazine. Blue fluorescent carbon dots with L-arginine and o-phenylenediamine as precursors, namely L-Arg/oPD-CDs, were prepared via the hydrothermal method. Then, L-Arg/oPD-CDs were further purified by dialysis, thin layer chromatography and column chromatography. A dual-mode nanosensor based on fluorescent and UV absorption was successfully developed. Excellent linear ranges of 0–5 μM and 10–50 μM were obtained with a low detection limit of 42.3 nM based on fluorescence. A good linear range of 0–50 μM was obtained with a low detection limit of 130.15 nM based on UV absorption. The quenching mechanism of tartrazine towards L-Arg/oPD-CDs fluorescence was the inner filter effect. In addition, a dual-mode nanosensor was used for tartrazine determination in millet, maize flour, carbonated drink, and sugar samples. This study provides new insight into the detection of tartrazine by applying a dual-mode nanosensor.
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JOURNAL OF FOOD COMPOSITION AND ANALYSIS
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2022
·
IF 4.52
Yanping Wei,Yiyong Wu,Jinxia Feng,Jun Liu,Yaling Tian,Jingyun Xiao,Quanguo He
The novel binary metal oxide cerium molybdate (Ce 2 Mo 3 O 13 ) as a promising strategy can be combined with MWCNTs for the development of ultrasensitive sensors. Herein, a pod-like Ce 2 Mo 3 O 13 was prepared, characterized, and used to construct a molecularly imprinted sensor (MIPs) for detection of ponceau 4 R as low as to nanomolar concentration. The results demonstrate that the electrochemical response at the specific hybridized electrode of MIPs/Ce 2 Mo 3 O 13 -MWCNTs/GCE is stronger than non-molecularly imprinted ones (NIPs). It indicates a synergistic effect resulting from the hybridized Ce 2 Mo 3 O 13 -MWCNTs combination and modification to the electrode. Under optimal conditions, the calibration curve is in the range of 10 nmol L −1 to 1 μmol L −1 , with a limit of detection of 7 nmol L −1 for ponceau 4 R determination. The excellent sensitivity, reproducibility, and selectivity of the new sensor provide an accurate and facile avenue for ultrasensitive ponceau 4 R detection in different samples.
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Nanomaterials
·
2022
·Vol. 12
·期 10
·1727
·
IF 5.719
Xiuya Wang,Pengbo Xie,Lan He,Yuwei Liang,Liang Zhang,Yuanyuan Miao,Zhenbo Liu
Graphene-cellulose-polyethyleneimine aerogels (GA-MCC-PEI) were prepared using a simple, environmentally friendly method to remove anionic and cationic dyes in water. Graphene-cellulose hydrogels were prepared using a hydrothermal method and then immersed in a polyethyleneimine aqueous solution for 48 h to obtain graphene-cellulose-polyethyleneimine hydrogels, which were then freeze-dried. The light and porous composite aerogels had a good compression resistance, and the maximum allowable pressure of the graphene-cellulose-polyethyleneimine aerogel with a cellulose content of 43% was 21.76 kPa, which was 827 times its weight. Adsorption of the anionic dye amaranth and the cationic dye methylene blue by the graphene-cellulose-polyethyleneimine aerogel was satisfactorily modeled using the Langmuir isothermal equation, indicating monolayer adsorption. When the cellulose content was 39%, the equilibrium adsorption capacities of the composite aerogel for amaranth and methylene blue were 369.37 mg/g and 237.33 mg/g, respectively. This graphene-cellulose-polyethyleneimine aerogel can be used to remove dye pollutants in water to maintain ecological balance, thus broadening the application space of aerogel materials, that is, as adsorbents in different environments.Keywords:graphene;cellulose;polyethyleneimine;aerogel;adsorbent
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