Science China-Materials
·
2023
·Vol. 66
·期 9
·3582-3591
·
IF 8.1
Yu Renwang,Liu Yiwen,Sun Xiaohong,He Gang,Dong Heng,Deng Shuxiang,Li Jiangtao,Chu Yanhui
Exploiting functional characteristics of high-entropy boride materials is critical for extending their potential applications in harsh environments. Herein we develop high-entropy diboride (HEB 2 ) nanoparticles with efficient catalytic performance by engineering their compositions. Based on the theoretical analysis of the lattice size difference and mixing enthalpy of HEB 2 and the self-propagating combustion mode of the system, six different compositional HEB 2 nanoparticles are synthesized via a facile, rapid, and low-cost combustion synthesis method. By engineering their compositions, we achieve the efficient catalytic ability of HEB 2 nanoparticles in persulfate activation towards antibiotics removal, namely the highest tetracycline removal efficiency of 93.5%. Further investigations of the adsorption energy and the charge density difference of various adsorption sites via density functional theory confirm that the outstanding catalytic ability mainly originates from the Ti constituent rather than the high-entropy effect. In addition, a potential catalytic mechanism of HEB 2 towards persulfate activation for antibiotics degradation is proposed based on the detected reactive oxygen species and the computational reaction energy barrier. This study not only provides theoretical basis for their component design in the efficient catalytic degradation of antibiotics, but also shows a promising application of HEB 2 for removal of emerging contaminants from environmental water matrices.
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JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
·
2023
·Vol. 332
·期 6
·2135-2142
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IF 1.6
Chen Lanhua,Chen Bin,Weng Zhehui,Gao Xudong,Shen Binqing,Yan Hui,Chen Qi,Li Yuhao,Diwu Juan
The stable porous material capable of exchanging external ions has promising potential in sorption and separation for radioactive nuclides. Herein, an in situ hydrothermal synthesis successfully incorporates potassium ions into a three-dimensional anionic uranyl phosphonate framework ( UPF , 1 ), which endows the porous framework with a particular ion-exchange capacity towards alkali and alkali earth ions. Remarkably, framework 1 is tolerant to high temperature, acidity, and salinity, presenting high stability and thus allowing applications in multiple scenarios with harsh conditions. Graphical abstract
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Nano Research
·
2023
·Vol. 16
·期 7
·10026-10033
·
IF 9.9
Jiang Shihui,Ke Jianxi,Li Guowei,Liu Aijun,Li Xiaohan,Ye Lixiang,Jiang Feilong,Liu Yongsheng,Hong Maochun
Hexagonal-phase NaYF 4 (β-NaYF 4 ) has been acknowledged to be one of the most efficient doping hosts to prepare bright lanthanide-doped luminescent nano-bioprobes for various biomedical applications. However, to date, it remains a great challenge to synthesize ultra-bright lanthanide-doped β-NaYF 4 nano-bioprobes under a low reaction temperature by using conventional synthetic methods. Herein, we first develop an acetic acid (HAc)-mediated coprecipitation method for the preparation of ultra-bright lanthanide-doped β-NaYF 4 nanoprobes under a low reaction temperature at 200 °C. Based on a series of comparative spectroscopic investigations, we show that the use of HAc in the reaction environment can not only promote the rapid α–β phase transformation of NaYF 4 host at 200 °C within 1 h but also boost the absolute photoluminescence quantum yield (PLQY) of NaYF 4 nanocrystals to 30.68% for near-infrared emission and to 3.79% for upconversion luminescence, both of which are amongst the highest values for diverse lanthanide-doped luminescent nanocrystals ever reported. By virtue of their superior near-infrared luminescence, we achieve optical-guided dynamic vasculature imaging in vivo of the whole body at a high spatial resolution (23.8 µm) under 980 nm excitation, indicating its potential for the diagnosis and treatment evaluation of vasculature-related diseases.
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JOURNAL OF WUHAN UNIVERSITY OF TECHNOLOGY-MATERIALS SCIENCE EDITION
·
2023
·Vol. 38
·期 2
·274-279
·
IF 1.6
Hao Zhenbang,Tian Qihang,Cao Shiyi,Han Xiaoyu,Zhang Jihong,Xie Jun,Zhao Xiujian
Novel hollow Au Ag alloy nano urchins were synthesized via Ag seeds growth method, and self-assembly coated on the wall and end-tip of silica fiber for fiber probe fabrication. The nano urchins homogeneously distributed on fiber surface because of fiber silanization. The sizes and tip sharpness of the nano-urchins could be controlled by Ag seeds. The elements distribution analysis indicated there was high Ag content in tip-top for better surface enhance Raman scattering performance. The detectable concentration could be as low as 10 −8 M using crystal violet molecules as analyte. Moreover, the fiber probes were stable in air, due to Au in the alloy. This fiber probe could be used for low content single molecular analysis.
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Nano Research
·
2023
·Vol. 16
·期 7
·8871-8881
·
IF 9.9
Zhang Kunfeng,Chen Hongxia,Pei Wenbo,Dai Hongxing,Li Junshan,Zhu Yongfa
Herein, a series of three-dimensionally ordered macroporous (3DOM) Bi 4 O 5 Br 2 photocatalysts with different macropore sizes were successfully fabricated via a polymethyl methacrylate (PMMA) template method. The photocatalytic activity for phenol degradation over 3DOM Bi 4 O 5 Br 2 first increased and then decreased with the rise in macropore size. Specifically, 3DOM Bi 4 O 5 Br 2 -255 (macropore diameter ca. 170 nm) exhibits the best photocatalytic activity in the static system, which is about 4.5, 7.3, and 11.9 times higher than those of bulk Bi 4 O 5 Br 2 , Bi 2 WO 6 , and g-C 3 N 4 , respectively. Meanwhile, high phenol conversion (75%) is also obtained over 3DOM Bi 4 O 5 Br 2 -255 in the flow system under full spectrum irradiation. Furthermore, 3DOM Bi 4 O 5 Br 2 -255 also shows strong mineralization capacity owing to the downward shift of valance band position (0.15 V) as compared with Bi 4 O 5 Br 2 . Total organic carbon (TOC) removal rate over 3DOM Bi 4 O 5 Br 2 -255 (62%) is much higher than that of Bi 4 O 5 Br 2 (17%). The enhancement in photocatalytic performance of 3DOM Bi 4 O 5 Br 2 -255 is attributable to its better phenol adsorption, O 2 activation, and charge separation and transfer abilities. This work combines the advantages of 3D structure and surface dangling bonds, providing new possibilities for designing highly efficient photocatalysts for pollutants removal.
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BMC Chemistry
·
2023
·Vol. 17
·期 1
·1-9
·
IF 4.6
Jing Xianwu,Liu Youquan,Zhao Wanwei,Pu Junhong
Different from common hydrophobic associative polymers, a new hydrophobic associative polyacrylamide (HAPAM) with ultra-long side chains was synthesized and aimed to be used as drag reducer in this work. Firstly, a water-soluble hydrophobic monomer (named AT114) was obtained by alcoholysis reaction with acryloyl chloride and triton 114, then the drag reducer was obtained by radical copolymerization of AM, AMPS and AT114. The structures of AT114 and drag reducer were characterized by IR and NMR. Slick water was obtained by dissolving a small amount drag reducer in water. Although the viscosity of slick water varied greatly in fresh water and brine, the drag reduction rate always remained at a high level when flowing in pipelines. When the concentration of the drag reducer was 0.03% in fresh water, drag reduction rate can be up to 76.7%, while in high concentration brine, still as high as 76.2%. It shows that salt has no obvious negative impact on the drag reduction rate. That is also to say, in the case of low viscosity, the viscosity change has no obvious impact on drag reduction rate. From the Cryo-TEM observation, it can be concluded that the drag reducer forms sparse network structures in water, which is the direct reason for drag reducing effect. This finding provides knowledge regarding the development of new drag reducers.
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高影响因子
WOOD SCIENCE AND TECHNOLOGY
·
2023
·Vol. 57
·期 4
·879-901
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IF 3.4
Luo Lingcong,Zhang Qianqian,Lan Yuling,Deng Jianping,Lin Yang,Du Guanben,Zhao Weigang
High-performance electrodes of activated carbons (PNOACs) with P, N, and O heteroatoms were prepared through a simple one-step phosphoric acid activation method without the need for any dopants or post-treatment. In the preparation procedure, cork biomass material from Quercus variabilis was used as the precursor, and phosphoric acid was used as both the phosphoric resource and the activation agent. The pore structure, morphology, and physicochemical properties of the as-prepared carbons were investigated. In addition, the electrochemical performances of the PNOACs were evaluated using three-electrode and two-electrode systems (symmetric supercapacitor, AS). The results indicated that cork is promising as a low-cost and environmental-friendly precursor for producing high-performance supercapacitors electrode. Furthermore, galvanostatic charge–discharge analysis revealed a specific capacitance of 206 F g −1 at a current density of 0.5 A g −1 , which can be attributed to the excellent hierarchical pore structure (micro-, meso-, and macropores) and suitable pore size distribution of the PNOACs. The specific surface area and total pore volume as high as 515.80 m 2 g −1 and 0.29 cm 3 g −1 were obtained, respectively. The presence of heteroatoms, namely N (0.81–1.07%), P (0.52–2.06%), and O (15.87–19.18%) content, on the carbon surface resulted in a considerable enhancement in the capacitive performance. Furthermore, a PNOAC sample, prepared at 600 °C with a mass ratio of 1:1, exhibited high long-term cycling stability (84.5%) and an energy density of 15.03 W h kg −1 . Therefore, cork is highly promising as an electrode material for supercapacitors to attain exceptional electrochemical performance, as well as provide a new possibility for the utilization and valorization of high-value cork waste.
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CATALYSIS LETTERS
·
2023
·
IF 2.8
Liu Xinyu,Xu Jing,Li Faqin,Liu Zhenlu,Xu Shengming
With the increasing scarcity of resources, the search for green and available energy has become an urgent need. Among them, photocatalytic decomposition of water to hydrogen production has been widely studied. According to zeta potential and XRD characterization, NiCo2O4 and CuS were successfully reassembled by electrostatic self-assembly to construct S-scheme heterojunction induced by built-in electric site, which can accelerate the reaction. At the same time, under simulated visible light irradiation, the composite catalyst can rapidly decompose aqueous triethanolamine solution to produce hydrogen. The composite catalyst has high photocatalytic activity and shows a durable and efficient hydrogen generation effect. By studying the photogenerated carrier separation and transfer of the catalyst, the results show that the composite catalyst can accelerate the photogenerated carrier separation and transfer, so that it can participate in the photocatalytic reaction faster. It provides various insights into the construction of different heterojunctions in binary composite catalysts. Graphical Abstract
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JOURNAL OF POLYMERS AND THE ENVIRONMENT
·
2023
·Vol. 31
·期 12
·5089-5098
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IF 5.3
Chen Shaowei,Liu Peng,Li Zhenchun,Tang Ning,Li Tianwei,Yu Yunwu,Li Feihong,Bi Yuanyuan
In this study, relying on different ratios of dopamine (DA) and polyvinylimide (PEI) as mussel coating materials, a new type of mussel-coated modified composite nanofiltration membrane was developed. The effects on membrane flux and retention of the step-by-step and one-step methods were compared. The results showed that the membrane performance was closely related to the different ratios of DA and PEI. When the ratio of DA:PEI was 3:1, the water flux and dye retention rate were the best, and the pollution recovery rate of humic acid reached 86.8%. By optimizing a simple one-step fabrication process, the performance of composite nanofiltration membranes has been greatly improved. Compared with the membrane prepared by the step-by-step method, the pure water flux of the new composite membrane prepared by the one-step method increases by 19.8%, and the retention rate increases by 145.9%. This research will provide a simple, fast, and efficient preparation method for developing new high-performance composite nanofiltration membranes.
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Parasites & Vectors
·
2023
·Vol. 16
·期 1
·1-9
·
IF 3.2
Ma Xiaoxiao,Bai Xue,Li Hongchang,Ding Jing,Zhang Huiyuan,Qiu Yangyuan,Wang Jing,Liu Xiaolei,Liu Mingyuan,Tang Bin,Xu Ning
Background Fish-borne zoonotic clonorchiasis, caused by Clonorchis sinensis , is an emerging public health problem in several countries with more than 15 million people infected globally. However, a lack of accurate point-of-care (POC) diagnostic tests in resource-limited areas is still a critical barrier to effective treatment and control of clonorchiasis. The development of the recombinase polymerase amplification(RPA) assay, a POC diagnostic test based on the amplification of pathogen DNA, has provided a new, simple and inexpensive tool for disease detection with high sensitivity and specificity. Methods A novel RPA method was developed based on specific primers and probes, and combined with the dipstick, to allow for the rapid and intuitive detection of C. sinensis through the amplification of the mitochondrial cytochrome c oxidase subunit 1 ( COX1 ) gene. The lower limit of detection for the combined RPA/lateral flow dipstick (RPA-LFD) assay was evaluated using dilutions of the target DNA sequence. Cross-reactivity was evaluated using genomic DNA from 10 additional control parasites. Forty human clinical stool samples were tested to verify its performance. Results The evaluated primers designed from the C. sinensis COX1 region can be used to detect adult worms, metacercariae, and eggs at 39 °C within 20 min, and the results can be visually observed using the LFD. The detection limit of pathogen genomic DNA was as low as 10 fg, and the number of metacercaria(e) in fish and egg(s) in faeces were both as low as one. This improved the sensitivity of low-infection detection tremendously. The test is species-specific, and no other related control parasites were detected. In human stool samples with eggs per gram (EPG) > 50, the RPA-LFD assay was performed consistent with conventional Kato-Katz (KK) and PCR methods. Conclusion The established RPA-LFD assay provides a powerful tool for the diagnosis and epidemiological survey of C. sinensis from human and animal samples, and has important implications for the effective control of clonorchiasis. Graphical Abstract
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Nano Research
·
2023
·Vol. 16
·期 7
·10451-10461
·
IF 9.9
Song Yucheng,Ma Xin,Tan Huanhuan,Liu Zhong,Liu Chuntai,Shen Changyu,Yang Peipei,Li Songwei
Efficient capture of uranium(VI) (U(VI)) from seawater is of great significance to the sustainable development of nuclear energy and environmental protection, which is also a serious challenge at present. In this study, hollow Zn/Co zeolitic imidazolate framework (H-ZIF) was decorated on polyacrylamide/sodium alginate (PAM/SA) hydrogel by chelating and covalently crosslinking, and a new type of PAM/SA/H-ZIF hydrogel was synthesized. The combination of PAM/SA and H-ZIF gives PAM/SA/H-ZIF hydrogel excellent mechanical properties, good stability, and abundant surface functional groups, which is beneficial to improving the adsorption properties. The extraction amount of U(VI) by PAM/SA/H-ZIF is 171.14 mg·g −1 at C 0 = 99.52 mg·L −1 and pH = 5.0. The adsorption equilibrium is reached in 120 min and the adsorption process fits well with Langmuir isotherm model and pseudo-second-order rate equation. The PAM/SA/H-ZIF also showed good recyclability and stability after 10 cycles of adsorption—desorption. More importantly, the rate of uranium adsorption is 0.196 mg·g −1 ·day −1 after 30 days, which implies that the PAM/SA/H-ZIF could serve as a potential adsorbent for the development of uranium capture from seawater.
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Journal of Bionic Engineering
·
2021
·Vol. 19
·期 1
·167-178
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IF 2.682
Luo Kun,Wang Li,Chen Xiaohu,Zeng Xiyang,Zhou Shiyi,Zhang Peicong,Li Junfeng
3D porous scaffold could provide suitable bone-like structure for cell adhesion and proliferation; however, surgical suffering from large volume implantation is a great challenge for patients. In this study, a shape programmable porous poly( ε -caprolactone) (PCL)-based polyurethane scaffold with memory effect was synthesized via gas foaming method, using Citrate modified Amorphous calcium Phosphate (CAP) as bioactive factor. The bending experiments indicated that the scaffolds achieved excellent shape-memory effect, which could be influenced by particle weight content. In vitro mineralization results suggested that the deposition of hydroxyapatite was promoted by scaffolds. Additionally, cell assay showed that composite scaffolds presented good cell toxicity and osteogenicity by the differentiation of rat Mesenchymal Stem Cells (rMSCs) into the osteogenic lineage. In the model of rat cranial implantation, the reparative tissue covered the defect site and bone-like structure deposited on the scaffold due to the formation of new bones. In summary, the porous smart shape-memory composite scaffolds could be a potential candidate in future distinctive bone repair applications.
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