INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2025
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IF 8.5
Huiqi Gao,Haiyun Ma,Jinjin Cui,Chang Wang,Hong Zhang,Yunhong Jiao,Jianzhong Xu
As a promising candidate to mitigate the intermittence of solar energy, multifunctional phase change materials (PCMs) with flame retardancy and fire warning are urgently desirable. Herein, we design a cellulose-based multifunctional aerogel PCMs with leak-proof, thermal energy storage, thermoelectric conversion, flame retardancy, and fire warning. As a natural plant fiber, the hollow structure of Kapok fiber (KF) endows the composite PCMs a high loading ratio and thermal energy storage density. Additionally, the polyhydroxyl KF can rapidly carbonize via synergistic catalysis of phytic acid and MXene, enhancing flame retardancy and achieving rapid fire alarm. Specifically, KSM@PEG-PA PCMs exhibit 98 % encapsulation efficiency and a high heat storage density of 173.1 J/g, as well as exceptional solar-thermal conversion efficiency (97.1 %). KSM@PEG-PA10 further converts the harvested thermal energy into electrical energy, generating 587 mV of voltage, 78.7 mA of current at 500 mw/cm 2 . The peak heat release rate (pHRR) and total heat release (THR) of KSM@PEG-PA is significantly decreased by 52.6 % and 32.8 %, respectively. Furthermore, the KSM@PEG-PA10 achieves an ultra-fast fire alarm response time of 2.0 s. This work offers valuable insights on the design of composite PCMs, expanding the application prospects in solar energy and fire safety.
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高影响因子
FOOD CHEMISTRY
·
2023
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IF 8.8
Di Chen,Xinmiao Bu,Xinli Xu,Bin Wang,Manyu Zhang,Yumei Gan,Hang Yuan,Xu Xia
This study presents an in-pipette-tip kapok fiber-supported liquid extraction/ in-situ derivatization (in-pipette-tip KF-SLE-ISD) method for simultaneous enrichment and derivatization of furfurals . Briefly, 3 mg of natural kapok fiber, which was loaded in an assembled pipette-tip, was used to support 12.5 μL of extractant (ethyl acetate/toluene, 75:25, v/v) containing 10 mM 2,4-dinitrophenylhydrazine. The in-pipette-tip KF-SLE-ISD procedure was conveniently conducted by aspirating/releasing 1 mL of sample solution 10 cycles, allowing simultaneous extraction and derivatization of furfurals. Then, 100 μL of acetonitrile was aspirated/released 5 cycles for elution, 10 μL of which was directly analyzed by high-performance liquid chromatography. The limits of quantitation were in ranges of 0.10–0.45 μg/mL. The method showed satisfied linearity (R 2 > 0.99), precision (RSD < 8.53%) and relative recovery (90.34–114.71%), which was successfully applied to determine furfurals in various samples (e.g., honeys, juices and glucose injections). The proposed method has the merits of effectiveness, simplicity, low cost, wide availability and ease of automation.
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高影响因子
CELLULOSE
·
2023
·Vol. 30
·期 11
·7031-7045
·
IF 5.7
He Hualing,Wang Yushu,Liu Jinru,Zhao Yuhang,Jiang Qing,Zhang Xin,Wang Jinfeng,Wang Hua,Yu Zhicai
Construction of biomass-based wearable aerogel heater with enhanced thermal insulation property plays a significant role in preventing heat loss for personal thermal management. Inspired by natural creatures’ utilization own hollow microstructures to resist the extremely cold surroundings, we report an eco-friendly strategy to construct calcium alginate (CA) /kapok fiber (KF)/carbon nanotubes (CNTs) active-cum-passive aerogel heater with desired economic feasibility, sustainability and efficient thermal insulation performance. The renewable cellulose hollow KF disrupts the heat transfer pathway and enabled CA/KF/CNT lower thermal conductivity (0.024 W/m·K) and ultralight density (0.027 g/cm 3 ). The CNTs in the aerogel heater not only provided excellent conductivity for realizing Joule-heating but also enhanced the photothermal conversion capability from solar irradiation, ensuring extra self-heating ability without power supply. According to energy-saving analysis, the total energy saved in China per year was 6.03 × 10 9 kWh when using the developed aerogel heater instead of the traditional heating method. This developed biomass aerogel heater in this work exhibits great potential to be applicable in the fields of wearable personal thermal management to enhance the adaptability of human body in cold environment. Our work may inspire the study of biomass-derived wearable heaters for solving global energy issues. Graphical abstract
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MICROCHEMICAL JOURNAL
·
2024
·
IF 4.9
Yumei Gan,Linlin Hua,Yuanyuan Zheng,Bin Wang,Di Chen
Effective antidepressant monitoring is crucial for safe treatment, with liquid chromatography being the primary detection method. Due to the complexity of biofluids, meticulous sample preparation is vital to remove interferences and concentrate analytes. In this study, a novel solid-phase extraction method utilizing unprocessed kapok fiber (KF) as an eco-friendly and efficient sorbent , ingeniously incorporated within an in-syringe device for the extraction of antidepressants from biofluids was introduced. The extraction process displayed several advantages, including simplicity and rapidity (less than 3 min with minimal manual intervention), as well as the potential for automation, which represents significant advancements in sample preparation techniques. The method demonstrated excellent analytical performance when coupled with high-performance liquid chromatography-ultraviolet detection, achieving good linearity (R 2 ≥ 0.991), excellent relative recovery (92.6–107.5 %), high precision in intraday and interday analyses (RSDs within 0.8–6.0 % and 1.2–7.9 %, respectively), and good sensitivity with limits of quantification between 5–10 ng/mL. Notably, given the use of a renewable and biodegradable material with KF, and a low-toxicity desorption solvent with ethanol, the developed method stands out for its environmental sustainability, aligning with green analytical chemistry principles. Its application to real biological samples validates its efficacy as a rapid and reliable tool for clinical and forensic monitoring of antidepressants. Moreover, the low cost of this method facilitated by the economical nature of KF and the reusability of syringes further enhances its practicability. This study presents a unique approach by employing natural and renewable KF as adsorbents, thereby eliminating the need for complex material synthesis and making a pioneering contribution to the field of analytical chemistry for drug analysis in complex matrices.
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MICROCHEMICAL JOURNAL
·
2023
·
IF 4.8
Fanglin Liu,Yongqiang Pang,Dexiang Liu,Qianwen Cao,Ying Rong,Xinglin Liao,Qiman Jiang,Peirong Xu,Di Chen,Xia Xu
In this study, Artemisia argyi essential oil (AAEO), extracted from the leaves of Artemisia argyi , was employed as a green extraction solvent for in-syringe kapok fiber-supported liquid-phase microextraction (KF-SLME) of hydrophobic compounds in aqueous samples. The wheat of natural kapok fiber as the support medium was 2 mg, and the optimum volume of the extraction solvent AAEO was 12.5 μL. The volume of green desorption solvent 75 % ethanol was 100 μL, which realized a highly environmentally friendly sample preparation method. By simply pulling and pushing the syringe plunger five times, the extraction process enabled rapid and convenient enrichment of analytes while removing most interferences. Coupled with liquid chromatography-tandem mass spectrometry (LC-MS/MS), the AAEO-based in-syringe SLME method was applied as a proof-of-concept study to determine triazole fungicides (TFs) residues in fruit juices, herbal oral liquids and herbal extract granules. Employing in-syringe KF-SLME prior to LC-MS/MS detection significantly reduced the limits of quantification (LOQs) by 5–50-fold. The integrated AAEO-based in-syringe KF-SLME-LC-MS/MS method demonstrated satisfactory linearity (R 2 ≥ 0.995), accuracies (86.5 %–115.1 %), and precisions (1.2 %–12.7 %) using an isotope calibration method. Furthermore, three greenness assessment metrics uniformly highlighted its outstanding environmental friendliness. The proposed method offers competitive advantages in terms of its environmentally friendly approach, detection sensitivity, analysis cost, and operational convenience.
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FOOD CHEMISTRY
·
2023
·
IF 8.8
Bin Wang,Yongyue Chen,Wenxuan Li,Yuwei Liu,Xinli Xu,Lei Ma,Xia Xu,Xuezhong Shi,Yongli Yang,Di Chen
Heating edible oils generates aldehydes, potentially leading to adverse health effects, making their analysis essential for quality control. This study presents a convenient miniaturized kapok fiber-supported liquid-phase extraction/ in-situ derivatization method for the simultaneous extraction and derivatization of aldehydes in oils. The method involves placing 150 mg oil into a 1 mL pipette tip packed with 25 mg kapok fiber, adding 150 μL ACN with 1.5 mg mL −1 DNPH, and post 30-minute static extraction, retrieving the extractant with a pipettor for liquid chromatography-tandem mass spectrometry analysis. By optimizing critical parameters through a Box-Behnken design, the method exhibits good linearity (1–500 ng g −1 , R 2 ≥ 0.991), low detection limits (0.2–1.0 ng g −1 ), excellent accuracy (95.3–107.1%) and high precisions (relative standard deviation < 7.9%). This method simplifies sample preparation processes, cuts solvent use, and facilitates automation. It effectively identifies ten aldehyde variations in six heated oils, displaying distinct profiles consistent with prior research.
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Sustainable Chemistry and Pharmacy
·
2024
·
IF 5.5
Yuwei Liu,Wenxuan Li,Yuanyuan Zheng,Bowen Deng,Lei Ma,Di Chen
Organochlorine pesticides (OCPs) are known for their environmental persistence and potential health risks through consumption of contaminated agricultural products. The need for their routine monitoring and quantification is thus critically important. This study introduces a novel approach utilizing kapok fiber-derived biochar (KFBC) affixed to the inner wall of pipette tips for solid-phase microextraction (PT-SPME) to detect OCPs in beverages and herbal extracts. The KFBC was prepared through the pyrolysis of natural kapok fibers, chosen for its efficiency, economy, eco-friendliness, and notably its porous structure. The method simplifies handling by integrating the biochar into a pipette-tip extraction device, optimizing key parameters for efficient extraction. This process, requiring only 150 μL of acetonitrile , is completed in about 3 min. Coupled with gas chromatography-electron capture detection, the method demonstrates high linearity (R 2 > 0.995), sensitivity (detection limits: 0.03–0.30 ng/mL), accuracy (relative recoveries: 88.5–117.1%), and precision (relative standard deviations: 2.6–11.8%) for OCPs. Its operational ease and minimal environmental impact highlight its potential as an effective analytical technique for OCPs determination.
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JOURNAL OF CHROMATOGRAPHY A
·
2024
·
IF 3.8
Qianqian Wang,Yuanyuan Zheng,Bowen Deng,Di Chen,Liuqun Jia,Nian Shi
This study delineates the development of a novel automated pipette-tip solid-phase extraction (SPE) methodology, employing kapok fiber as a naturally efficient and cost-effective adsorbent for the selective extraction of eleven tyrosine kinase inhibitors (TKIs) from plasma. The uniqueness of this method lies in its assembly, where kapok fibers are ingeniously wrapped around a stainless-steel spring within the pipette tip, ensuring an obstruction-free central space for effortless solution aspiration and dispensation. This design significantly minimizes backpressure, enhancing operational efficiency and ensuring compatibility with pipettors, including the implementation of an electric pipettor to streamline the sample preparation process and facilitate automation. The method's analytical performance, rigorously validated through liquid chromatography-tandem mass spectrometry, exhibits outstanding linearity in ranges of 0.1/0.5–200 ng mL -1 (R² > 0.993), commendable accuracy (86.3%–114.8%), and consistent precision (3.4–11.3%), alongside remarkably low detection limits that span from 0.024 to 0.130 ng mL -1 . The assembly of kapok fiber within the pipette tip, in this unique configuration, results in a practical, cost-effective, eco-friendly, and automated pipette-tip SPE method. This innovation signifies a significant advancement in bioanalytical methodologies, offering an efficient and sustainable approach for extracting analytes from complex biological samples. This process notably enhances both the sensitivity and selectivity of subsequent instrumental analyses.
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JOURNAL OF FOOD COMPOSITION AND ANALYSIS
·
2023
·
IF 4.3
Yongyue Chen,Wenxuan Li,Yuwei Liu,Yifeng Lou,Jiaqi Chen,Xia Xu,Xuezhong Shi,Lei Ma,Yongli Yang,Di Chen
The addition of synthetic phenolic antioxidants can effectively delay or prevent oxidation of edible oils . However, excessive use of these antioxidants can have negative impacts, which emphasizes the importance of accurate analysis methods to determine their presence in edible oils. Given the large number of food samples involved in regulatory purposes, there is a need to develop high-throughput and cost-effective detection methods for routine analysis. However, the existing methods are not suitable, indicating a need for further improvement. This study presents a technique that combines miniaturized-kapok fiber-supported liquid-phase extraction (mini-KF-SLE) with gas chromatography-flame ionization detection (GC-FID) to determine synthetic antioxidants like 3- tert -butyl-4-hydroxyanisole, 3,5-di- tert -butyl-4-hydroxytoluene, and tert -butylhydroquinone in edible oils. The mini-KF-SLE device consists of 20 mg of kapok fibers placed in a 1 mL pipette tip attached to a pipette. The extraction procedure involves three simple steps: loading the oil sample (150 mg), adding the extractant (150 µL of ACN), and eluting the extractant by applying air pressure using a pipette. The developed mini-KF-SLE-GC-FID method shows satisfactory quantitation ability (R 2 >0.99) and detection limits of 0.4–0.5 µg/g. Moreover, the relative standard deviations for all analytes were below 9.2%, indicating good precise of the method for routine analysis. The proposed method also exhibits excellent environmental friendliness , as evidenced by three widely recognized metrics. Overall, the mini-KF-SLE-GC-FID method provides a convenient, low-cost, environmentally friendly, and easy to automate alternative for routinely determining synthetic antioxidants in edible oils.
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