ACS Applied Nano Materials
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2023
·
IF 5.9
Guorong Wang,Guiquan Liu,Zhiliang Jin
Vanadium-based hydrotalcite materials have attracted much attention in supercapacitor electrodes due to their polyvalent properties. Nevertheless, the weak electrical conductivity of hydrotalcite limits its further development. In order to overcome this problem, nanoflowers P-NiV-LDHs-8 and Se-NiV-LDHs-1 were obtained by ingenious modification on the surface of nanoflower microlamellae of NiV-LDHs. Compared with Se-NiV-LDHs-x (x = 0.5, 2), P-NiV-LDHs-x (x = 4, 12), NiV-LDHs, Ni2P, and NiSe2, nanoflowers P-NiV-LDHs-8 and Se-NiV-LDHs-1 have better mass-specific capacity and corresponding rate performances. The self-assembled P-NiV-LDHs-8//AC and Se-NiV-LDHs-1//AC (AC = activated carbon) soft package devices have relatively superior energy density and power density. Moreover, the specific capacitance retention also maintains a relatively impressive level. It is proven that the interfacial modification has a positive effect on the energy storage performance of NiV-LDHs from the perspectives of phosphating and selenizing.
研究领域:
材料科学
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电化学
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产品关联
DOI
高影响因子
Journal of Materials Chemistry B
·
2023
·Vol. 11
·期 40
·9630-9638
·
IF 7
Cong Jiang,Huimin Zhong,Jiahui Zou,Guancheng Zhu,Yanyan Huang
Conventional nanozyme-based pesticide detection often requires the assistance of acetylcholinesterase. In this work, a CuCeTA nanozyme was successfully designed for the direct colorimetric detection of glyphosate. Direct detection can effectively avoid the problems caused by cascading with natural enzymes such as acetylcholinesterase. By assembling tannic acid, copper sulfate pentahydrate and cerium(III) nitrate hexahydrate, CuCeTA nanoflowers were prepared. The obtained CuCeTA possessed excellent peroxidase-like activity that could catalyze the oxidation of 3,3′,5,5′-tetramethylbenzidine (TMB) to blue oxidized TMB in the presence of hydrogen peroxide. Glyphosate could effectively inhibit the peroxidase-like activity of CuCeTA while other pesticides (fenthion, chlorpyrifos, profenofos, phosmet, bromoxynil and dichlorophen) did not show significant inhibitory effects on the catalytic activity of CuCeTA. In this way, CuCeTA could be used for the colorimetric detection of glyphosate with a low detection limit of 0.025 ppm. Combined with a smartphone and imageJ software, a glyphosate test paper was designed with a detection limit of 3.09 ppm. Fourier transform infrared spectroscopy demonstrated that glyphosate and CuCeTA might be bound by coordination, which could affect the catalytic activity of CuCeTA. Our CuCeTA-based nanozyme system exhibited unique selectivity and sensitivity for glyphosate detection and this work may provide a new strategy for rapid and convenient detection of pesticides.
研究领域:
生物化学
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环境科学
·
分析化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
MATERIALS RESEARCH BULLETIN
·
2023
·
IF 5.4
Pengcheng Ma,Ran Bi,Qianqian Wang,Lingtian Lu,Xiaoyan Ma,Fang Chen
We have synthesized copper phosphate-protein hybrid heterostructure nanoflowers (Cu(II)-HNFs) in situ on nickel foam for the first time. The interaction between protein and copper ions facilitated the nucleation growth of copper phosphate crystals and self-assembly of hybrid nanosheets into exquisite flower-like nanostructures . The unique high-specific surface structure of Cu(II)-HNFs provided high-density catalytically active sites for copper phosphate. Also, the direct growth of Cu(II)-HNFs on the NiF surface enhanced the electron transfer efficiency during catalysis. As a result, Cu(II)-HNFs exhibit an excellent electrocatalytic efficacy in glucose sensing. Including wide linear range of 0.1-3000 μM, high sensitivity of 2497.1 μA mM −1 cm −2 , ultra-low detection limit of 0.03 μM, good selectivity, and stability. Moreover, Cu(II)-HNFs@NiF has been validated as a reliable tool for detecting glucose in urine samples, with recoveries ranging from 92.9 % to 101.9 %. These findings demonstrate that the developed Cu(II)-HNFs@NiF has immense potential for non-invasive glucose monitoring through body fluids.
研究领域:
生物化学
·
材料科学
·
医学诊断
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产品关联
DOI
高影响因子
MATERIALS LETTERS
·
2023
·
IF 3
Jianfeng Tan,Weijia Ma,Gaoxiang Meng,Congkui Tian,Yin Wang,Yan Wang,Zhuo Liu
Room temperature (RT) gas sensors have been widely studied because of their low power consumption and easy integration. The low response value and long response/recovery time of gas-sensitive materials have hindered the development of RT gas sensors. In this paper, Bi-doped SnS 2 nanoflowers with high surface area were tailored by a novel hydrothermal method. A fast response/recovery speed of 52/100 s and high response (5.58) were obtained from 3 % Bi doped SnS 2 nanoflower for 1 ppm NO 2 . This work provides a strategy to fabricate RT gas sensors based on layered metal sulfide.
研究领域:
材料科学
·
环境监测
✓ 已验证
DOI
高影响因子
Micro & Nano Letters
·
2019
·Vol. 14
·期 5
·493-495
·
IF 0.975
Qinghua Yang,Chunni Xiao,Bingbing Chen,Lin Ma,Limei Xu
MoS 2 hierarchical nanoflowers are fabricated through a gelatin-assisted hydrothermal route. The obtained MoS 2 products are characterised by X-ray powder diffraction, scanning electronic microscopy, transmission electronic microscopy and X-ray photoelectron spectra. It is indicated that MoS 2 nanoflowers (MoS 2 NFs) are assembled by nanosheets as building blocks and gelatin plays a crucial role in the formation of these novel structures. Moreover, MoS 2 NF electrode exhibits an enhanced capacitive property because of its unique microstructure.
研究领域:
材料科学
·
纳米技术
✓ 已验证
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2022
·
IF 7.392
Xiang Li,Huimin Yang,Qirui Wu,Chaoqi Zhu,Jiahong Tang,Chaofan Ma,Lu Tang,Huiyu Su,Xiaoxia Wang,Changsheng Xie,Dawen Zeng
Limited by the dense arrangement of oxygen atoms in the outer layer, the active Mo sites of MoO 3 ultrathin nanoflowers are shielded by oxygen, making it difficult for efficient gas adsorption. Here, oxygen atoms on the surface of MoO 3 nanoflowers (MoO 3 NFs) were knocked out based on a simple hydrogenation strategy to obtain MoO 3 defective nanoflowers (MoO 3 DNFs) with abundant molecular traps and exposed Mo sites. Notably, the response of MoO 3 DNFs-10 to 2 ppm H 2 S is 3 times that of MoO 3 NFs. Oxygen atom knockout was verified based on Laser Raman Spectroscopy, Photoluminescence (PL), UV–Visible Spectroscopy (UV–Vis), and X-ray photoelectron energy Spectroscopy (XPS), while calculations based on density functional theory (DFT) were used to reveal the sensing enhancement of molecular traps and exposed Mo sites. On the one hand, molecular traps can effectively trap H 2 S molecules to facilitate further adsorption. On the other hand, exposed Mo sites have higher charge activity and exhibit higher adsorption capacity for H 2 S gas. This work breaks through the limitations of the traditional oxygen vacancy model and innovatively discusses the synergistic effect of molecular traps and exposed Mo sites on enhanced sensing, which can provide a reference for the gas sensing by metal oxide semiconductors.
研究领域:
材料科学
·
传感器技术
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DOI
高影响因子
FOOD CHEMISTRY
·
2025
·
IF 9.8
Xiaoyu Li,Fengchun Huang,Juan Zhang,Jiaci Chen,Xiangyi Pang,Longrui Yang,Xiaoyun Sun,Yuhang Fan,Ailiang Chen,Qingli Yang
Acetylcholinesterase inhibition–luciferase bioluminescence system enables rapid detection of organophosphate and carbamate pesticide residues. However, firefly luciferase (FLuc) suffers from poor stability and short luminescence duration, thereby introducing uncertainties in detection. To address this problem, nanoflower-immobilized FLuc (FLuc@NFs) was prepared using a coprecipitation method, which markedly enhanced stability and activity. FLuc@NFs exhibited intact nanoflower structures and allowed storage at 25 °C and at 4 °C for 2 weeks, overcoming the limitation of free enzyme storage at −20 °C. In the bioluminescence reaction, FLuc@NFs at 1 mg/mL achieved 62.14 % higher luminescence than free FLuc, with stable signals extending from 10 s to 30 min, enabling high-throughput detection. The system achieved detection limits of 5 and 10 ng/mL for chlorpyrifos and carbaryl, respectively, demonstrating improved reliability and sensitivity in pesticide detection.
研究领域:
生物化学
·
食品安全
✓ 已验证
DOI
PubMed
高影响因子
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
·
2025
·
IF 4.1
Kun Liu,Long Ma,Pengpeng Du,Qiufang Liu,Yan Yan,Shaohua Wen,Yuan Dang,Qi Xue
Developing non-noble transition metal electrocatalysts with high catalytic activity and durability is essential for the oxygen evolution reaction (OER). Herein, novel nanoflower-like Se-NiCo 2 O 3 electrocatalyst (Se-NiCo 2 O 3 NFs) were fabricated via a hydrothermal refluxing and high-temperature calcination strategy. The electrochemical test results demonstrated that the 7 wt% Se-NiCo 2 O 3 NFs exhibit superior OER activity compared with the pristine NiCo 2 O 3 NFs, requiring an overpotential of 290 mV to reach a current density of 10 mA cm −2 along with a low Tafel slope of 56.89 mV dec −1 . Their superior and stable catalytic performance can be attributed to structure advantage and Se doping. The nanoflower structure provides a large specific surface area to expose abundant active sites. In addition, the doping of Se can further increase the electrical conductivity and regulate the electronic structure of metal atoms, promoting the adsorption of reaction intermediates such as OH ⁎ and enhancing the material's oxygen evolution capability. This work provides new insights and methodologies for designing efficient and stable Se-doped metal oxide electrocatalysts.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2024
·
IF 4.9
Hang Wu,Lei Xie,Liang Zhu,Tengbo Yu,Yingze Zhang
As a common malignant bone tumor in adolescents, osteosarcoma (OS) possesses a very poor prognosis and lacks effective treatments. In this study, we developed a multifunctional nanotherapeutic agent (WSe 2 /AIPH/GOx) that can combine photothermal therapy (PTT) /thermodynamic therapy (TDT) /starvation therapy (ST) against OS. The prepared WSe 2 /AIPH/GOx exhibited a high photothermal conversion efficiency of 37.3% under 808 nm near-infrared laser irradiation, which could effectively eliminate tumor cells. In addition, the local high temperature caused by photothermal heat induces the rapid release and decomposition of AIPH, generating oxygen-independent alkyl radicals that promote tumor cell death in the hypoxic microenvironment. More importantly, the introduction of GOx depletes glucose to starve tumor cells on the one hand, and on the other hand can indirectly increase the thermal sensitivity of cells. In vivo experiments have demonstrated that WSe 2 /AIPH/GOx can effectively inhibit tumor growth in mice due to the combined effects of multiple therapies. Overall, this work provides an effective strategy for potential osteosarcoma treatment based on combination therapies.
研究领域:
肿瘤学
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纳米医学
·
生物材料学
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2025
·
IF 8.3
Riguang Cheng,Zhaoyu Liu,Pantrangi Manasa,Zhongxian Zhao,Hongge Pan,Fen Xu,Lixian Sun,Federico Rosei
The inherent thermodynamic stability and slow kinetics of LiAlH₄ pose significant challenges for its practical application in hydrogen storage. This study addresses these limitations by introducing nanoflower-structured layered double oxides (Co₃O₄@CoNi-LDO) as a performance-enhancing catalyst. The Co₃O₄@CoNi-LDO was synthesized through a hydrothermal process followed by calcination and subsequently incorporated into LiAlH₄ via mechanical ball milling. Experimental results demonstrate that the addition of 7 wt% Co₃O₄@CoNi-LDO substantially improves the hydrogen desorption properties of LiAlH₄. The hydrogen release temperatures for the two-step desorption process are reduced to 85.1 °C and 177.0 °C, respectively, with a total hydrogen release of approximately 6.87 wt% below 300 °C. Moreover, the activation energy of the two desorption steps is lowered by 20.0% and 46.3% compared to pristine LiAlH₄. The modified material also exhibits superior rehydrogenation performance, absorbing approximately 0.64 wt% hydrogen within 5 h-markedly better than pristine LiAlH₄. Mechanistic studies reveal that the in-situ formation of catalytically active species, such as Al₁₃Co₄ and Al₀.₉Ni₄.₂₂, anchored on the LiAlH₄ matrix, plays a pivotal role in facilitating hydrogen transfer. These catalytic sites effectively reduce the energy barriers for hydrogen desorption, enhancing the kinetics of the process. This work highlights the potential of Co₃O₄@CoNi-LDO nanoflowers as a highly effective catalyst for improving the hydrogen storage capabilities of LiAlH₄, paving the way for its application in advanced energy storage systems.
研究领域:
材料科学
·
能源存储
·
催化化学
✓ 已验证
产品关联
DOI
高影响因子
CATALYSIS COMMUNICATIONS
·
2017
·
IF 3.33
Miaoyu Li,Huijuan Zheng,Gaoyi Han,Yaoming Xiao,Yanping Li
A facile one-pot solvothermal method has been presented to synthesize PtRu nanoflower catalysts by using oleylamine as the coordinating solvent, reductant and surfactant. The morphology, composition and electrochemical performance of the PtRu catalysts have been characterized by XRD, XPS, TEM, EDX, ICP-AES and electrochemical methods. The results indicate that the obtained PtRu catalysts show flower-like nanostructures and exhibit different morphologies at different ratios of Pt to Ru, among which the PtRu nanoflowers composed of nanodendrites show superior electrocatalytic properties toward methanol electro-oxidation normalized by the ECSA.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
·
2020
·
IF 5.278
Anming Wang,Xinxin Chen,Jianyun Yu,Ningning Li,Huimin Li,Youcheng Yin,Tian Xie,Stephen Gang Wu
To prepare enzyme@Ca 3 (PO 4 ) 2 for environmentally friendly biocatalysis, Ca 2+ and (PO 4 ) 3− were extracted from bone waste by acidification. In the nearly neutralized filtrate, the Ca 2+ and (PO 4 ) 3− formed a Ca 3 (PO 4 ) 2 sediment that crystallized on a template of Thermomyces lanuginosus lipase (TLL) at 4 ℃ for 24 h, producing enzyme@Ca 3 (PO 4 ) 2 -Bone hybrid nanoflowers (hNFs). Clindamycin palmitate was efficiently synthesized by transfer of a palmityl moiety from vinyl palmitate to clindamycin free base using these hNFs as a biocatalyst. At 30 ℃ in petroleum ether (PE) as the solvent, the yield of the TLL hNF-catalyzed reaction was as high as 70.0%. Even at a high temperature (80 ℃), the yield in the hNF-catalyzed reaction was still 52.6%, but no product was detected when using free lipase as the catalyst. Moreover, the hNFs retained 90% of their initial activity after 10 cycles (120 h, 12 h per cycle). This green and sustainable method that utilizes bone waste from food production as the raw source of the inorganic component was facile and efficient, and the system may also be applicable for preparing other enzyme@Ca 3 (PO 4 ) 2 hNFs for industrial applications.
研究领域:
生物化学
·
环境科学
·
制药工程
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）