GREEN CHEMISTRY
·
2025
·
IF 9.2
Lingli Zhu,Jin Cao,Hongmin Yang,Dekui Shen,Haitao Hu,Mengjia Dou
Biomass-derived carbon quantum dots (CQDs) have emerged as a promising sustainable alternative to conventional semiconductor quantum dots for light-emitting diode (LED) applications, offering distinct advantages in terms of renewability, low toxicity, and environmental friendliness. However, the efficient preparation of multicolor biomass-derived CQDs remains a critical challenge for practical implementation. In this study, lemon peel was screened as the optimal precursor from 26 types of agricultural and forestry residues, landscaping wastes, and food wastes. A green synthesis strategy involving hydrothermal carbonization coupled with controlled heteroatom doping was developed, which enabled the preparation of multicolor CQDs with superior photoluminescence properties. The synthesized CQDs exhibited tunable emission wavelengths (440–655 nm), high fluorescence quantum yields (4.98–35.58%), and exceptional photostability. High-efficiency LEDs were successfully fabricated by constructing a multilayer device structure using a mixture of multicolor biomass-derived CQDs and polymers. The CQD-based LEDs exhibited high color rendering indices (81.8–92.9) and a wide color temperature range (3912–6964 K) covering the visible spectrum while maintaining a decay rate below 30% over an operating lifetime of 11 832–12 815 h. This work not only provides a novel route for low-cost and sustainable synthesis of CQDs but also establishes theoretical and technical foundations for green electronic devices, accelerating the application of biomass resources in high-value optoelectronic devices.
研究领域:
材料科学
·
环境科学
·
光学工程
✓ 已验证
产品关联
DOI
高影响因子
Arabian Journal of Chemistry
·
2023
·
IF 6
Zhijuan Li,Miya Zhou,Ningxin Liu,Fuyan Zhang,Keyao An,Xinwei Xiong,Shuangyan Fan,Qi Sun,Tao Le
The urgent need for efficient decontamination of organic dyes from polluted waters necessitates the search for a low-cost and suitable adsorbent. The large amount of lemon peel residue in actual production can be an ideal raw material for the preparation of adsorbents. Herein, a novel magnetic nanocomposite derived from lemon ( Citrus limon L .) peel residue (Fe 3 O 4 /Lp-biochar) was successfully synthesized by one-step hydrothermal method and used for the adsorptive capture of methylene blue (MB) in aqueous solution. The prepared Fe 3 O 4 /Lp-biochar are spherical with a particle size of 8.3 nm and have a saturation magnetization intensity of 52.9 emu/g and a specific surface area of 64.30 m 2 /g. It was found that the maximum MB adsorption capacity of 26.36 mg/g by the Fe 3 O 4 /Lp-biochar can be achieved when the amount of nanocomposite was 0.10 mg/mL, the system's pH value was 10, the reaction temperature was 25 °C, and the adsorption time was 60 min. Adsorption kinetics of MB on the Fe 3 O 4 /Lp-biochar followed the pseudo-second-order kinetic model whilst the Freundlich isotherm model could well simulate the adsorption behavior of MB on magnetic biochar. The adsorption mechanism of MB by the Fe 3 O 4 /Lp-biochar predominantly include electrostatic attraction and mesoporous interaction. Furthermore, the Fe 3 O 4 /Lp-biochar exhibited a remarkable retention of 94.7% of the initial adsorption efficiency even after the 10th cycle of repeated use. It was concluded that the lemon peel-derived magnetic biochar can be a promising alternative to conventional adsorbents for wastewater treatment.
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
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
·
2024
·
IF 11.2
Dongliang Xie,Yi Kuang,Bingnan Yuan,Yunlong Zhang,Chenyu Ye,Yuyi Guo,Hua Qiu,Juanna Ren,Saud O. Alshammari,Qamar A. Alshammari,Zeinhom M. El-Bahy,Kui Zhao,Zhanhu Guo,Qingqing Rao,Shengxiang Yang
As a typical bioflavonoid, diosmetin is desirable in the field of natural medicine, healthy food, and cosmetics by anti-cancer, antibacterial, antioxidant, estrogen-like and anti-inflammatory activities, and it comes from a wide range of sources in traditional Chinese medicine like spider fragrance, spearmint and chrysanthemum, as well as in Citrus fruit. However, traditional analytical methods such as silica gel column chromatography face multiple challenges in the selective extraction of diosmetin from biological materials and traditional Chinese medicinal materials. Therefore, it is urgent to develop a new type of absorbent with high efficiency, recyclability and good specificity to diosmetin. In this investigation, a magnetic surface molecularly imprinted polymer (labeled as Diosmetin/SMIPs) was synthesized employing magnetic nanoparticles as the carrier and 4-vinylpyridinyl (4-VP) as the functional monomer by surface imprinting technology. The functional monomer was screened by the binding energy (ΔE) between functional monomers and template molecules via computational simulation. The Diosmetin/SMIPs had a high level of specific recognition and adsorption capability towards diosmetin with a 20.25 mg g -1 adsorption capacity and an imprinting factor (IF) of 2.28. Additionally, it demonstrated excellent regeneration performance with 8 adsorption/desorption cycles. In addition, 91.20 %–94.16 % of spiked diosmetin was recovered from the lemon peel samples. The strategy of constructing Diosmetin/SMIPs based on computational simulation can effectively enhance the specific adsorption performance of diosmetin. Meanwhile, Diosmetin/SMIPs synthesized by imprinting polymerization showed excellent anti-interference and reusability, and realized efficient targeted extraction of diosmetin from lemon peel samples. The results of this investigation provide a promising adsorbent for selective enrichment of diosmetin from Citrus fruit and complicated materials.
研究领域:
天然药物化学
·
材料科学
·
分析化学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF FOOD ENGINEERING
·
2024
·
IF 5.3
Sara Shamim,Zhenting Wu,Yuling Tang,Jingru Jia,Chunju Liu,Haiou Wang,Fangcheng Zheng,Long Ba
This study investigated the transformations of lemon flavedo tissues during freeze-drying based on high-resolution X-ray micro-computed tomography ( μ- CT) and confocal laser scanning microscopy (CLSM). Contrast-enhanced segmentation, traversal statistic algorithmic analysis, and 3D visualization of lemon peel texture are studied. To avoid pseudo-imaging caused by precipitation of contrast enhancer, low concentration cesium iodide was used to improve X-ray contrast and decrease enlarged inter-cellular region. X-ray μ-CT showed the precipitation of contrast enhancers at the intercellular boundary after freeze-drying. The grayscale thresholding method was presented as the most suitable segmentation method for detecting cell walls due to the high noise level caused by low contrast enhancer concentration in the reconstructed images. The faster water loss at the primary drying stage caused the disintegration of oil glands and induced high porosity of 0.7 % in fresh to 0.84 % in 0.5 h freeze-dried. The results suggest that noise filtering based on voxel statistics provides an efficient approach for the inter and intra-cellular microstructural analysis of excessively watery plant tissues with low contrast enhancer concentration.
研究领域:
植物学
·
食品科学
·
显微成像技术
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2025
·
IF 8.5
Hai He,Fanrui Liu,Lei Yang,Honghao Fan,Hao Wan
This paper highlighted the structural changes of rice starch complexed with green tea catechin and lemon peel caffeic acid under thermomechanical-assist low moisture, and their prebiotic functions during in vitro digestibility and fermentation were further explained. Extruded starch with caffeic acid, characterized by enhanced short-range order, a distinct fractal structure, and a V-amylose helical arrangement, exhibited slower glucose release due to V-type inclusion crystalline structures and strong hydrogen bondings. Additionally, extruded starch with catechin or caffeic acid changed the composition of gut microbiota by increasing the proliferation of good bacteria and reducing pathogenic microorganisms, which led to a greater synthesis of short-chain fatty acids. According to a PICRUSt2 analysis, the extruded starch with caffeic acid may trigger metabolic alterations via altering the gut flora and increasing bile acid metabolism. Thus, extruded starch with caffeic acid demonstrates significant potential as a prebiotic for developing nutritionally tailored starch-based foods.
研究领域:
食品科学
·
微生物学
·
营养学
✓ 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）