ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
·
2024
·Vol. 31
·期 39
·51237-51252
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IF 0
Wang Tongtong,Husein Dalal Z.,Guo Siyan,Zhang Xinle,Kang Jiarui,Wang Huixia,Cao Shumiao,Shangguan Zhonghua,Shi Hui
Resource utilization of waste masks has become an urgent scientific issue. In this work, with sustainably, waste masks and biomass were co-pyrolysis with oxygen limitation to prepare mask-based biochar (MB). Then, urea was introduced to prepare novel nitrogen modified mask-based biochar (NMB) via a one-step hydrothermal synthesis method. The adsorption characteristics of NMB on the emerging environmental pollutant, bisphenol A (BPA), were evaluated via batch adsorption tests. Moreover, the physicochemical properties of the materials were characterized with various advanced techniques. Also, the roles of waste masks and nitrogen modification were explored. The adsorption mechanisms of NMB on BPA were revealed as well as the performance differences between different adsorbents. The results showed that waste masks participated in thermochemical reactions, shaped the microsphere structure of biochar, and increased the types of surface functional groups. The nitrogen modification enriched the surface elemental composition and activated the specific surface area via the mesopore. These would enhance the adsorption performance. The maximum adsorption of BPA by NMB was 62.63 mg·g −1 , which was approximately 2.35–5.58 times higher than that of the control materials. Temkin model and pseudo-second-order model optimally simulate the isothermal and kinetic adsorption, respectively. The adsorption mechanisms are jointly by physical and chemical adsorption, which mainly includes π–π interaction, hydrogen bonding, intraparticle diffusion, surface adsorption, and ion exchange. After discussion and evaluation, NMB has lower preparation process cost (7.21 USD·kg −1 ) and safety, with potential for environmental applications. This study aims to expand new ideas for the comprehensive utilization of waste masks and the preparation of eco-friendly materials. Moreover, it provides a theoretical basis for the removal of BPA.
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Science China-Materials
·
2024
·
IF 6.8
Ding Baosen,Liu Shaojia,Lu Junfeng,Guo Yiran,Zheng Tian,Zhao Hewei,Guo Lin
The hierarchical structure of tooth enamel can inspire the preparation of high strength and high toughness biomimetic composites, but fully mimicking the entire hierarchy of tooth enamel is still challenging. Here, we show that synthetic hydroxyapatite (HAP) microbundles containing a long range of ordered crystalline/amorphous HAP nanowires can be spun into enamel-inspired high-performance macroscopic fiber through shear-induced assembly. The highly ordered nanowire-microbundle structure as well as the strong interfacial connection between HAP nanowires, HAP microbundles, and the polymer matrix, leads to a hierarchical energy dissipation route, which enables this enamel-inspired fiber with a high strength and toughness of 196.3 MPa and 46.3 MJ m −3 , exceeding the fracture toughness of previously reported HAP-based hybrid fibers. This hierarchical enamel-inspired design strategy provides a new sight into the development of high strength and high toughness fibers for potential engineering and bio-repair applications.
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Scientific Reports
·
2025
·Vol. 15
·期 1
·1-15
·
IF 3.9
Feng Liujun,Chen Zhiqiang,Wang Haiyan,Chen Zhibiao,Chen Zuliang,Liu Jianhua,Zeng Yuee
Phytoremediation is currently a very popular remediation method for salvaging rare earth mining sites. However, there is still a challenge concerning how to use secondary resources such as plant biomass following the extraction of rare earth elements (REEs). Herein, Dicranopteris pedata (Houtt.) Nakaike, a REEs hyperaccumulator, served to fabricate REEs-rich carbonisation materials (REEs/C) at different temperatures. The results showed that the percentages of Pb(II) removed using REEs/C prepared at 400 °C (REEs/C-4) and 800 °C (REEs/C-8) were 85.1% and 84.0%, respectively. These amounts were better than that of REEs-C prepared at 600 °C (REEs/C-6 (67.0%)). Characterisation analysis confirmed that rich functional groups like aromatic, hydroxyl and C = C/C-C in REEs/C-4 provided more chelation sites to effectively complex with Pb(II), while the superior removal capacity of REEs/C-8 resulted from the enrichment of more REEs and abundant pore structure. Chemisorption, such as ion exchange and chelation, plays a significant role in adsorption. During the carbonisation process of REEs/C, the REEs enriched in Dicranopteris pedata contributed to the formation of rare earth oxides and oxygen vacancies in the material, and these properties enhanced the Pb removal ability of REEs/C. Moreover, the REEs contained in the material did not cause a leaching phenomenon during Pb removal, which is a safe and environmentally friendly material. Finally, the REEs/C was applied to wastewater, and it was found that this material could effectively adsorb Pb from wastewater. Overall, this study generates a new insight into: firstly, how to use phytoextracted biomass containing REEs as valuable REEs/C materials; and secondly, how to save the environment by using technology that promotes recycling of used materials.
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ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
·
2024
·Vol. 31
·期 23
·34159-34169
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IF 0
Cao Yu,Zhong Zehui,Zeng Fanqi,Zhou Yang
To ensure the safety of food contact materials, a liquid chromatography method was established to determine the migration of formaldehyde in paper packaging with various food simulants (10%, 25%, 50%, 75%, and 95% ethanol by volume) and to investigate the migration behavior of formaldehyde after various durations and with various materials. The results showed that the method has good linearity with a correlation coefficient of R 2 > 0.9990, a detection limit of 0.0011 ~ 0.0027 mg L −1 , and a spiked recovery of 89.7 ~ 103.2% in the range of formaldehyde determination; the migration of formaldehyde in all six paper contact materials showed a trend of gradual increase with time until equilibrium was reached. At the same time and temperature, the migration of formaldehyde in paper packaging was the highest in low-concentration ethanol. With the same food simulants and materials, the maximum migration of formaldehyde in printed materials was greater than that in nonprinted materials; with different materials and the same food simulant, the thickness value was higher, with the use of water-based ink as a printing material, and the maximum migration value of formaldehyde by offset printing technology was low.
CAS / MDL:
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JOURNAL OF INCLUSION PHENOMENA AND MACROCYCLIC CHEMISTRY
·
2011
·Vol. 73
·期 1
·237-246
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IF 1.22
He J.
In this work, the inclusion between methyl substitute β-cyclodextrin and some linear macromolecule in supercritical carbon dioxide medium was investigated. The contributions from several factors were studied; such as the hydrogen bonding interaction between the host and guest, the hydrogen bonding interaction between the neighborhood cyclodextrin rims threaded on the polymer chain, and the matching between the host cavity and the size of the polymer axis.
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CELLULOSE
·
2024
·Vol. 31
·期 6
·3645-3656
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IF 4.9
Hu Guizhen,Ning Juan,Wu Tian,Li Yuanjie,Nie Yamin,Lei Jiandu,Zhou Yanmei
Cellulose nanocrystals (CNCs) and polydopamine (PDA) have shown great application potential in the biomedical field due to their excellent biocompatibility. Using PDA@CNC as a carrier to construct functional nanocomposites for targeted fluorescence imaging of tumor cells and effective cancer treatment can expand the applications of CNCs in tumor diagnosis and treatment. Here, we conveniently modified microRNA-21 inhibitors (miRNAi) on PDA@CNC to construct a multifunctional nanocomposite (FAM-miRNAi@PDA@CNC) for achieving in situ fluorescence imaging of tumor biomarkers and photothermal effects to induce death of breast cancer cells. The overexpressed miRNA-21 in breast cancer cells hybridizes with FAM-miRNAi, triggering green fluorescence of FAM to recognize breast cancer cells. The rod-shaped morphology of FAM-miRNAi@PDA@CNC can effectively promote the endocytosis of FAM-miRNAi@PDA@CNC by the cell membrane. In addition, CNCs can stabilize the photothermal performance of PDA, and the photothermal conversion efficiency of PDA@CNC reached up to 61.66%, which will help FAM-miRNAi@PDA@CNC to achieve 70% apoptosis rate of breast cancer cells under 808 nm laser irradiation. The design of FAM-miRNAi@PDA@CNC provides a valuable pathway for CNCs utilization in biomedicine and accurate diagnosis and treatment of breast cancer.
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JOURNAL OF NANOBIOTECHNOLOGY
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2024
·Vol. 22
·期 1
·1-23
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IF 10.6
Chen Rong,Wang Pinkai,Xie Jiajun,Tang Zinan,Fu Jinlang,Ning Yanhong,Zhong Qiang,Wang Ding,Lei Mingyuan,Mai Huaming,Li Hao,Shi Zhanjun,Wang Jian,Cheng Hao
The proficient handling of diabetic wounds, a rising issue coinciding with the global escalation of diabetes cases, poses significant clinical difficulties. A range of biofunctional dressings have been engineered and produced to expedite the healing process of diabetic wounds. This study proposes a multifunctional hydrogel dressing for diabetic wound healing, which is composed of Polyvinyl Alcohol (PVA) and N 1 -(4-boronobenzyl)-N 3 -(4-boronophenyl)-N 1 , N 1 , N 3 , N 3 -teramethylpropane-1, 3-diaminium (TSPBA), and a dual-drug loaded Gelatin methacryloyl (GM) microgel. The GM microgel is loaded with sodium fusidate (SF) and nanoliposomes (LP) that contain metformin hydrochloride (MH). Notably, adhesive and self-healing properties the hydrogel enhance their therapeutic potential and ease of application. In vitro assessments indicate that SF-infused hydrogel can eliminate more than 98% of bacteria within 24 h and maintain a sustained release over 15 days. Additionally, MH incorporated within the hydrogel has demonstrated effective glucose level regulation for a duration exceeding 15 days. The hydrogel demonstrates a sustained ability to neutralize ROS throughout the entire healing process, predominantly by electron donation and sequestration. This multifunctional hydrogel dressing, which integrated biological functions of efficient bactericidal activity against both MSSA and MRSA strains, blood glucose modulation, and control of active oxygen levels, has successfully promoted the healing of diabetic wounds in rats in 14 days. The hydrogel dressing exhibited significant effectiveness in facilitating the healing process of diabetic wounds, highlighting its considerable promise for clinical translation. Graphical Abstract
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高影响因子
POLYMER BULLETIN
·
2011
·Vol. 68
·期 3
·729-743
·
IF 1.215
Han Wensong,Lin Baoping,Zhou Yidan,Song Jiangang
The hyperbranched polyurethane acrylate oligomers containing photoinitiator were synthesized by modifying the second-generation hyperbranched poly(amine-ester) with isophorone diisocyanate-2-hydroxyethylacrylate and isophorone diisocyanate-2-hydroxy-2-methylpropiophenone at different feed ratio. The elemental analysis, FT-IR and NMR methods are used for structural characterization, molecular weights, and polydispersities, photosensitive groups and thermal properties of the oligomers were analyzed by gel permeation chromatography, UV–Vis spectra and thermogravimetric analysis, respectively. UV-curing properties were characterized by FT-IR at different curing time. In addition, the solubilities of the oligomers were also examined.
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MICROCHIMICA ACTA
·
2024
·Vol. 191
·期 11
·1-9
·
IF 5.3
Shao Tong,Yang Dou,Wang Xiaoshuang,Wang Ruirui,Yue Qiaoli
A novel portable cotton swab based on nitrogen-doped carbon dots (NCDs) for Al 3+ detection was constructed for the first time. NCDs with bright green fluorescence were prepared by hydrothermal method with phenylhydrazine hydrochloride and 3-hydroxy-2-naphthoic acid hydrazide as precursors. The surface of NCDs was exposed to abundant functional groups (such as amino, carboxyl, hydroxyl, etc.), which was helpful for the formation of complexes between NCDs and Al 3+ . In the presence of Al 3+ , the aggregation of NCDs obviously induced their fluorescence enhancement due to the aggregation-induced emission (AIE) of NCDs. Furthermore, the quantum yield (QY) of NCDs was enhanced by 12 times with Al 3+ , and the fluorescence lifetime was increased by 7.54 ns. The fluorescence intensity was linearly correlated with the concentration of Al 3+ (2.5–300 μM), and the limit of detection was 0.76 μM. Moreover, for the portable way, cotton swabs were successfully employed to construct the sensors for the detection of Al 3+ in food samples. This proposal has potential for the application in food analysis. Graphical
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高影响因子
CHROMATOGRAPHIA
·
2025
·
IF 1.3
Jiang Qiaoling,Wu Qiaoli,Chen Shuhang,Zeng Tianfu,Tong Xiaoyi
This study introduces a rapid LC–MS/MS method designed to simultaneously quantify 14 water-soluble vitamins and their metabolites in human serum. The protein precipitation with metaphosphoric acid and stable isotope dilution techniques are utilized in this method. An Agilent XDB C18 column and dynamic ionization mode switching are adopted, enabling the completion of a single sample analysis within 5 min. The method has undergone rigorous validation. The lower limits of quantification (LLOQs) range from 0.3 to 400 ng/mL, with recovery rates between 80 and 120%. Intra-day and inter-day relative standard deviations (RSDs) are below 15%. The matrix effects are controlled within ± 15%, and the analyte carryover is less than 20% of the LLOQ. The stability tests have demonstrated that samples remain stable at room temperature (25 °C) for 10 h, at − 20 °C for 7 days, and can withstand one freeze–thaw cycle. Extracted samples are stable in the autosampler (4 °C) for 24 h. The method was applied to serum samples from 150 healthy individuals. Non-parametric statistical analysis was carried out to establish clinical reference intervals, which provides valuable data for the clinical evaluation of vitamin and metabolite levels in serum.
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Food and Bioprocess Technology
·
2024
·
IF 5.3
Gao Weilan,Zheng Zhan,Chen Rongyu,Zhang Na,Wang Xuehua,Zhu Zhenzhou,Li Shuyi,Cong Xin
Selenylation modification is an effective way to improve the nutritional and health effects of tea polysaccharide, but the effects of different selenylation methods on the structure and efficacy of polysaccharides remain unclear. In this study, a series of chemically selenized tea polysaccharides (CSe-TPS, selenium content of 129.98 ~ 1454.99 µg/g) were prepared by Na 2 SeO 3 -HNO 3 method, which were promoted by heating (HCSe-TPS), ultrasound (UCSe-TPS), and pulse electric field (PCSe-TPS) treatments, respectively. These different CSe-TPSs were systematically compared with ordinary tea polysaccharides (Ord-TPS) and natural selenium-enriched tea polysaccharides (NSe-TPS) in aspect of molecular structure and biological functions. The results of molecular structure and apparent morphology showed that the particle size ( p < 0.05) and the thermal stability of Ord-TPS were reduced after selenylation modification, while the absolute potential of polysaccharide was increased ( p < 0.05), coupled with altered monosaccharide composition and changed apparent morphology. However, the main functional groups and the secondary structure of Ord-TPS did not change. The antioxidant activities of tea polysaccharides after selenylation were improved as well as their inhibitory effects on carbohydrate digestive enzymes ( p < 0.05). The total antioxidant capacity of PCSe-TPS (selenium content of 240.66 ± 1.43µmol/g) was enhanced by 85.41% compared with Ord-TPS (selenium content of 129.80 ± 3.42 µmol/g), while its IC 50 values on inhibition of α-amylase (2.91 ± 0.18 mg/mL) and α-glucosidase (0.18 ± 0.01 mg/mL) were significantly lower than other tea polysaccharides ( p < 0.05), which suggested best antioxidant and hypoglycemic activity. Moreover, tea polysaccharides with higher selenium content and smaller particle size showed better antioxidant and hypoglycemic activities. This research will provide new strategies for the application of tea polysaccharides.
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Nature Communications
·
2024
·Vol. 15
·期 1
·1-11
·
IF 14.7
Wang Kun,Shi Jianwei,Lai Wenxuan,He Qiang,Xu Jun,Ni Zhenyi,Liu Xinfeng,Pi Xiaodong,Yang Deren
Integrated circuit anti-counterfeiting based on optical physical unclonable functions (PUFs) plays a crucial role in guaranteeing secure identification and authentication for Internet of Things (IoT) devices. While considerable efforts have been devoted to exploring optical PUFs, two critical challenges remain: incompatibility with the complementary metal-oxide-semiconductor (CMOS) technology and limited information entropy. Here, we demonstrate all-silicon multidimensionally-encoded optical PUFs fabricated by integrating silicon (Si) metasurface and erbium-doped Si quantum dots (Er-Si QDs) with a CMOS-compatible procedure. Five in-situ optical responses have been manifested within a single pixel, rendering an ultrahigh information entropy of 2.32 bits/pixel. The position-dependent optical responses originate from the position-dependent radiation field and Purcell effect. Our evaluation highlights their potential in IoT security through advanced metrics like bit uniformity, similarity, intra- and inter-Hamming distance, false-acceptance and rejection rates, and encoding capacity. We finally demonstrate the implementation of efficient lightweight mutual authentication protocols for IoT applications by using the all-Si multidimensionally-encoded optical PUFs.
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高影响因子
危险品化学品经营许可证（带存储）