JOURNAL OF MOLECULAR LIQUIDS
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2023
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IF 6
Xialan Zhang,Xin Wang,Ting Cheng,Qilang Lin
Nowadays, the reduction of dye contaminants in the aquatic environment has attracted widespread research attention. In this work, a novel mesoporous carbon nanospheres (MCNs)-based material as an adsorbent for dye removal was achieved by the carbonization of a composite of sucrose and aluminum sulfate without involving any hazardous activators. The as-obtained MCNs were analyzed by TG, XRD, FESEM, TEM, Raman, BET and XPS, meanwhile the batch experiments of Congo red (CR), Malachite green (MG) and Methylene blue (MB) on the MCNs were conducted to explore the impact of adsorption conditions on the adsorption process, respectively. Results show that the MCNs exhibit a uniform spherical morphology as well as partially graphitic structure with a large surface area of 449.25 m 2 /g, a relatively narrow pore size distribution and a high pore volume of 0.57 cm 3 g −1 . The unique porous structure of the MCNs endows it with high adsorption capabilities for dyes, including CR (1726.60 mg g −1 ), MG (980.55 mg g −1 ) and MB (708.82 mg g −1 ), suggesting its high adsorption capability for both anionic and cationic dyes. Meanwhile, the adsorption process is demonstrated to follow the Langmuir model and pseudo-second-order kinetic model, respectively, and the main adsorption mechanisms may involve pore filling, π-π conjugation, electrostatic attraction and hydrogen bonding. Furthermore, the as-synthesized adsorbent displays good recyclability performance for remaining relatively high sorption performance even after five regeneration cycles.
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JOURNAL OF MEMBRANE SCIENCE
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2023
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IF 9.5
Zhongbao Ma,Chao Wang,Ran Li,Yi Zhao,Chenglin Zhang,Long-Fei Ren,Jiahui Shao
Janus charged nanofiltration (NF) membranes are appealing for efficient separation of both positively and negatively charged ions/molecules. Nevertheless, polyamide-based Janus charged membranes still face bottlenecks in engineering applications due to their poor fouling and chlorine resistance. To overcome this limitation, herein, bilayer heterostructured Janus charged NF membranes with a negatively charged non-polyamide outer selection layer and a positively charged polyamide inner selection layer were prepared via electrospray polymerization-based strategy for the first time. The evolutionary behavior of the mutually charge neutralization effect between two charged selection layers was explored. Results showed the membrane inner selection layer with denser cross-linked structures and lower positive charge densities exhibited a weak charge neutralization effect, leading to ∼90% rejection for both Na 2 SO 4 and MgCl 2 and >95% rejection for charged dyes. Impressively, the flux recovery rate of Janus NF membrane could reach 91.9% after three bovine serum albumin fouling cycles. More importantly, the non-polyamide outer selection layer could serve as an “armor” to safeguard polyamide inner selection layer, allowing Janus NF membranes to maintain a normalized salt rejection of 0.94 even under 12000 mg L −1 h chlorination conditions. Thus, this work provides an easy strategy for developing Janus NF membranes with high antifouling properties and chlorine resistance.
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Journal of the Taiwan Institute of Chemical Engineers
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2023
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IF 5.7
Yue Liu,Jiajun Zhang,Taimei Cai,Rong Wang,Gan Yang,Tao Wen,Hailong Peng
Background On-site and rapid detection of glucose level in foods is important for monitoring and control glucose intake. Methods Magnetic and N–doped nanofibrous carbon microspheres (Fe@NCMs) with hierarchical porosity were designed as a novel nanozyme (Fe@NCMzyme), and the catalytic mechanism was investigated via the density functional theory (DFT) calculation. Therefore, Fe@NCMzyme sensor and point-of-care testing (POCT) platform were developed for glucose detection in food samples. Significant findings Fe@NCMzyme showed 3D porous structure, a larger surface area, and N–doped carbon material properties, resulting in an enhanced peroxidase (POD)–like activity. In Fe@NCMzyme, Fe 3 O 4 nanoparticles (FeNPs) act as catalytic centers and N–doped carbon nanofibers could be used as substrate binding sites. DFT results revealed that Fe–induced Fenton–like reaction was the main catalytic mechanism. The low detection limit and linear range of Fe@NCMzyme sensor was 0.247 μM and 1–900 μM, respectively. The excellent recovery ration in spiked food samples was 85.0 %–110.0 %. The applicability of Fe@NCMzyme sensor for glucose detection was verified by the commercial Glucometer. Furthermore, Fe@NCMzyme POCT platform was established and a linear detection range (10–900 μM) was obtained with low detection limit (3.125 μM). Importantly, Fe@NCMzyme POCT platform was realized visual, on–site, and rapid detection of glucose in food samples.
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高影响因子
ACS Biomaterials Science & Engineering
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2023
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IF 5.8
Zitong Sun,Huilin Wen,Zhengao Di,Yang Zhang,Shaobin Zhang,Zhiqian Zhang,Jing Zhang,Ziyi Yu
Living materials that combine living cells and synthetic matrix materials have become promising research fields in recent years. While multicellular systems present exclusive benefits in developing living materials over single-cell systems, creating artificial multicellular systems can be challenging due to the difficulty in controlling the multicellular assemblies and the complexity of cell-to-cell interactions. Here, we propose a coculture platform capable of isolating and controlling the spatial distribution of algal-bacterial consortia, which can be utilized to construct photosynthetic living fibers. Through coaxial extrusion-based 3D printing, hydrogel fibers containing bacteria or algae can be deposited into designated structures and further processed into materials with precise geometries. In addition, the photosynthetic living fibers demonstrate a significant synergistic catalytic effect resulting from the immobilization of both bacteria and algae, which effectively optimizes sewage treatment for bioremediation purposes. The integration of microbial consortia and 3D printing yields functional living materials with promising applications in biocatalysis, biosensing, and biomedicine. Our approach provides an optimized solution for constructing efficient multicellular systems and opens a new avenue for the development of advanced materials.
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JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
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2023
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IF 6.1
Jun-Ling Deng,Meng-Jie Tang,Xiao-Xia Su,Yu-Tong Ye,Jie-Ying Wei,Zhong-Xiu Chen,Yu-Mei Qin
The subjective measurement of the dynamic perception of sweetness is a problem in food science. Herein, the rapid interactions of sugars and sugar alcohols with sweet taste receptors on living cells on a millisecond timescale were studied via stopped-flow fluorescence spectroscopy. According to the rapid-kinetic parameters, sweeteners were divided into two groups. Sweeteners in group I disrupted the hydrogen bond network structure of water, and the apparent rate constant (kobs) was in the range of 0.45–0.6 s–1. Sweeteners in group II promoted the hydrogen bond formation of water, and the kobs was mostly in the range of 0.6–0.75 s–1. For most sweeteners, the kobs of cell responses was negatively correlated with the apparent specific volume of sweeteners. The differences in the cellular responses may be attributed to the disturbance in the water structure. Experimental results showed that the kinetic parameters of sweet cell responses reflected the dynamic perception of sweetness. Rapid kinetics, solution thermodynamic analysis, and water structure analysis enriched the physicochemical study of the sweetness mechanism and can be used to objectively evaluate the dynamic perception of sweetness.
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高影响因子
LANGMUIR
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2023
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IF 3.9
Ze-Lin Qiu,Wen-Han Yu,Wu-Shang Yang,Tong Sun,Zi-Hao Zhao,Qian-Wei Su,Bao-Ku Zhu
High-efficiency dye desalination is crucial in the textile industry, considering its importance for human health, safe aquatic ecological systems, and resource recovery. In order to solve the problem of effective separation of univalent salt and ionic dye under the condition of high salt, ionic hyperbranched poly(amido-amine) (HBPs) were synthesized based on a simple and scalable one-step polycondensation method and then incorporated into the polyamide (PA) selective layers to construct charged nanochannels through interfacial polymerization (IP) on the surface of a polyvinyl chloride ultrafiltration (PVC-UF) hollow fiber membrane. Both the internal nanopores of HBPs (internal nanochannels) and the interfacial voids between HBPs and the PA matrix (external nanochannels) can be regarded as a fast water molecule transport pathway, while the terminal ionic groups of ionic HBPs endow the nanochannels with charge characteristics for improving ionic dye/salt selectivities. The permeate fluxes and dye/salt selectivities of HBP-TAC/PIP (57.3 L m–2 h–1 and rhodamine B (RB)/NaCl selectivity of 224.0) and HBP-PS/PIP (63.7 L m–2 h–1 and lemon yellow (LY)/NaCl selectivity of 664.0) membranes under 0.4 MPa operation pressure are much higher than PIP-only and HBP-NH2/PIP membranes. At the same time, this project also studied the membrane desalination process in a simulated high-salinity dye/salt mixture system to provide a theoretical basis and technical support for the actual dye desalination process.
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POLYMER COMPOSITES
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2023
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IF 5.2
Qing-qing Liu,Zheng-xing Dai,De-xiang Sun,Xiao-dong Qi,Jing-hui Yang,Yong Wang
With the trend of integration and miniaturization of stretchable electronics, thermal management has been a crucial issue. Developing novel materials with high thermal conductivity (TC) and flexibility is urgent. Herein, we report a stretchable polydimethylsiloxane (PDMS)/boron nitride nanosheet (BNNS)@spherical aluminum oxide (Al 2 O 3 ) composite with high TC and electrical insulation prepared by a two-step strategy of sucrose-template and hot-pressing. An effective foam-pressing route benefits the composites to form a three-dimensional thermally conductive networks, improving the in-plane TC value of the resultant composite to 4.03 W/(mK) at the filler mass fraction of 35.7 wt% and enhancing to 4.66 W/(mK) under 40% stretching ratio. Meanwhile, the composites can be restored to their former state and retain thermally conductive stability with repeated bending and twisting tests. Moreover, the composites were applied in LED with stretching, exhibiting good heat dissipation performance. These results demonstrate this PDMS composite can be potentially utilized as a high-performance material to solve thermal management problems in flexible electronics. Highlights The heat conduction network is prepared by sucrose-template and hot-pressing. BNNS@P-Al 2 O 3 fillers are self-assembled via the electrostatic interaction. The composites exhibit good thermal conduction and superior flexibility. The thermal conductivity of the composite increases after stretching. The composites can retain thermal conductive stability after deformation.
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INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
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2023
·Vol. 25
·期 1
·386
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IF 5.6
Ziyuan Deng,Chengling Lai,Jun Zhang,Fan Sun,Danting Li,Peiying Hao,Xuping Shentu,Kun Pang,Xiaoping Yu
The brown planthopperNilaparvata lugens(Stål) (BPH) is a main rice pest in China and many other Asian countries. In the control of BPH, the application of insect-resistant rice has proven to be quite effective. Secondary metabolites are essential weapons in plants’ defense against phytophagous insects. Studies have found that differences in the content of secondary metabolites play a crucial role in determining whether rice exhibits resistance or susceptibility to BPH. Simultaneously, symbionts are essential to the BPH. Nevertheless, there is limited research on the impact of secondary metabolites on the symbionts within BPH. Therefore, investigating the influence of secondary metabolites on both BPH and their symbionts is significant for the control of BPH. In this experiment, newly emerged female adults of BPH were fed artificial diets containing 10 different secondary metabolites. The results indicated that methyl jasmonate had inhibitory effects on the survival rate, weight gain, and reproductive capacity of BPH. Using qPCR methods, it was discovered that the number of symbiotic fungi (Ascomycetessymbionts) within BPH significantly decreased under methyl jasmonate stress. In conclusion, this experiment has preliminarily revealed the inhibitory effects of methyl jasmonate on BPH and its symbionts, demonstrating its potential for controlling BPH.Keywords:brown planthopper;secondary metabolites;symbionts;methyl jasmonate
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APPLIED CLAY SCIENCE
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2023
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IF 5.6
Ting Zhang,Ge Bai,Nan Cai,Yongqian Lei,Pengran Guo,Jingwei Xu
Since the outbreak of COVID-19, the extensive use of epidemic control drugs such as Arbidol (ARB) and Acyclovir (ACV) has significantly increased and the environmental pollution caused by these residues has attracted increasing attention. In this article, a novel montmorillonite graphene-like carbon hybrid Fe 3 O 4 compound (Mt/GH/Fe 3 O 4 ) as particle electrode catalyst was prepared and applied in three-dimensional-electro-Fenton (3D-EF) for the ARB and ACV degradation. The structure and composition of the compound catalyst were characterized. The degradation efficiency of targets was significantly increased in the 3D-EF degradation system and even more thorough for the degradation of targets, compared with simple 2D, 3D, and EF catalytic degradation systems. The degradation rate of antiviral drugs can reach >90% in 5 min with excellent stability. The research demonstrated that the clay mineral with a special structure loaded with graphene-like carbon and Fe 3 O 4 had supplied an ideal reaction medium for the electro-Fenton reaction. Mt./GH/Fe 3 O 4 -based 3D-EF degradation system would have promising applications in the degradation and removal of antiviral drug residuals in the environment.
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JOURNAL OF ALLOYS AND COMPOUNDS
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2023
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IF 6.2
Shasha Wang,Qing Wang,Wuxin Liu,Yan Wang,Yuli Wei,Shaohua Luo,Pengqing Hou,Yahui Zhang,Shengxue Yan,Xin Liu
Due to the advantages of abundant precursors, simple preparation, and environmental friendliness, nitrogen-doped carbon is considered one of the most potential anodes for potassium ion batteries (PIBs). Here, nitrogen-doped carbon materials (NC-2) were prepared by using secondary exfoliated g-C 3 N 4 as a precursor, combined with sucrose, and subjected to hydrothermal and high-temperature pyrolysis. NC-2 is characterized by high nitrogen content, porous layered structure, and large interlayer spacing. NC-2 used as anode of PIBs shows a high reversible capacity of 261.07 mAh g −1 at 0.1 A g −1 and an impressive rate performance of 153.36 mAh g −1 at 2 A g −1 . The impressive performance of NC-2 can be originated from the porous layered structure and enlarged interlayer spacing promotes the intercalation/deintercalation and the diffusion of K ions , and the defective carbon structure formed after nitrogen doping can supply abundant active sites for K ions. The results show that NC-2 has great potential in the field of PIBs anode.
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Molecular Catalysis
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2023
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IF 4.6
Ming Zhan,Yue Wang,Huai Liu,Rui Zhang,Lincai Peng,Junhua Zhang
Visible-light-driven upgrading of biomass and its derivatives into value-added chemicals under mild reaction conditions is an economical and sustainable strategy for biomass valorization. In this contribution, industrially-accessible anthraquinone and its derivatives (AQs) have been developed as efficient metal-free photocatalysts for the photo-oxidation of 5-hydroxymethylfurfural (HMF). Especially, a quantitative furans selectivity containing 86.0 % of 2,5-diformylfuran (DFF) and 13.6 % of 5-formyl-2-furancarboxylic acid (FFCA) was implemented at HMF conversion of 88.8 % over 2,6-dibromoanthraquinone (2,6-DB-AQ) catalyst under visible light illumination. In addition, the homogeneous 2,6-DB-AQ catalyst can be readily separated and recycled from the reaction mixture by a “water-assisted” precipitate method. Photophysical characterizations indicated that the introduction of bromine substituents on AQ enhances its visible light absorption ability, decrease its band gap energy and enables the catalyst with a more stable photoexcitation state. It has also been demonstrated that the lower photoexcitation energy of O 2 over 2,6-DB-AQ endowed the catalyst with better capacity for the activation of O 2 than that of AQ. These contributions should be in charge of the excellent catalytic activity of 2,6-DB-AQ for the photo-oxidation of HMF. This work demonstrates an efficient and recyclable organo-photocatalyst for the visible-light-mediated valorization of biomass-derived alcohols and aldehydes to value-added chemicals.
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SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
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2023
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IF 4.4
Shen Zhang,Jinjia Bao,Ling Lv,Yongjie Bai,Yiming Zhang,Yaofang Zhang
The non-standard use of curcumin could cause some adverse drug reactions, such as diarrhea, nausea and skin allergies. Thus, the curcumin determination was fundamental to disease treatment and prevention. Herein, a facile and efficient fluorescent probe was developed based on carbon dots, which was prepared through hydrothermal method (o-phenylenediamine and N-isopropylacrylamide as the reaction raw materials). Characteristics of the as-fabricated carbon dots (NCDs) were studied through some analysis techniques, such as UV–vis absorption spectroscopy, transmission electron microscopy, Fourier transform infrared instrument, X-ray photoelectron spectroscopy and fluorescence spectrophotometer. Fluorescence quenching phenomenon could be observed after addition of curcumin. This as-prepared fluorescent probe displayed a significant response for the determination of curcumin with a satisfactorily lower detection limit of 0.017 μM and a considerable linear range of 0.5–50 μM compared to reported literatures. Because of the preeminent repeatability and anti-jamming capability, the as-developed CDs suggested mighty potentiality for actual applications of curcumin detection in real samples and temperature sensing.
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