COLLOIDS AND SURFACES B-BIOINTERFACES
·
2024
·
IF 5.4
Xieyu Yan,Quanjin Li,Shuai Xiao,Junjie Chen,Wei Song
Promoting ferroptosis in tumor cells has emerged as a promising strategy for cancer therapy. Nonetheless, the heightened antioxidant activity within tumor cells hampers this approach, diminishing its effectiveness and fostering drug resistance. In this study, a new type of sulfasalazine (SAS) loaded nanoframe self-etched Pt-Co nanodendrites (Pt/Co-BNN@SAS) was developed, presenting a novel avenue for inducing ferroptosis in tumor cells by depleting glutathione (GSH) for cancer treatment. Pt/Co-BNN exhibits notable peroxidase (POD) activity, catalyzing the production of abundant oxygen radicals through the consumption of hydrogen peroxide (H 2 O 2 ) and the concurrent depletion of GSH. Simultaneously, the liberated sulfasalazine (SAS) from Pt/Co-BNN@SAS effectively obstructs system xc - , impeding the absorption of cystine by tumor cells and thereby expediting GSH depletion. The expeditious reduction of GSH markedly stimulates the accumulation of lipid peroxides (LPO) and suppresses glutathione peroxidase 4 (GPX4), consequently triggering ferroptosis in bladder cancer cells and inhibiting the migration ability of bladder cancer cells effectively. This research contributes to a more profound comprehension of nano-drug-biological interactions and provides a prospective outlook on treating bladder cancer by instigating ferroptosis in tumor cells through GSH depletion.
研究领域:
肿瘤学
·
药理学
·
纳米医学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Advanced Materials Interfaces
·
2023
·
IF 5.4
Bingxuan Du,Haichao Li,Conglin Zhang,Qingsong Ji
Carbon nanomaterials have attracted much attention in the field of science and technology for their excellent properties; however, developing a simple, environmentally friendly, and versatile synthesis strategy for the preparation of carbon nanomaterials with novel structures remains a great challenge. Herein, a surfactant @ salt (dodecyltrimethylammonium bromide DTAB @ NaCl) self-assembly strategy for the synthesis of carbon nanomaterials with novel structures, i.e., carbon nanoframes is reported. The synthesis differs from the traditional template method in that it is characterized by the introduction of surfactants for separation and protection, and the salt can be recycled. In addition, the carbon frame size in this system can be adjusted on demand by simply adjusting the concentration of surfactant, thus realizing that the carbon nanoframe size is adjustable in the range of 232.58–322.51 nm. Impressively, the carbon nanoframe has purple, blue, and green PL emission behavior. It is anticipated that this research will provide new insights into the development of novel carbon nanomaterials.
研究领域:
材料科学
·
化学工程
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2021
·
IF 13.273
Shujie Liang,Xiaohui Zhong,Zuqi Zhong,Bin Han,Weiyi Chen,Kainan Song,Hong Deng,Zhang Lin
The development of biomimetic catalysis for efficient photoreduction of CO 2 is an effective alternative to address energy problems. However, amelioration on the construction of biomimetic catalysts for elevated photocatalytic performance is still challenging and demanded. Herein, a bioinspired artificial photosynthesis system is constructed based on ZrO 2 nanoframes (ZFs) and metalloporphyrin to mimic the morphology of trees. The robust backbone of the framework and the bio-inspiring porphyrins anchored on the surface of ZFs function as the strong trunk and well-ordered leaves of a tree, respectively. The biomimetic system achieves an evolution yield of 35.3 μmol during 3 h reaction with 93.1% CO selectivity and 1.84% CO apparent quantum efficiency ( A.Q.E. ), which is about 60.8 times larger than that of pure porphyrin (Ni) (0.58 μmol). Detailed analysis reveals that the catalytic system could not only achieve fast separation of the photogenerated carriers and effective CO 2 activation but also possess suitable energy levels, which could efficiently transfer electrons to the Ni catalytic sites to improve the photocatalytic activity. Furthermore, the good recycling tests could be explained by the robust supporting of frameworks as well as the strong binding of the Zr atoms and carboxyl groups of porphyrins. This work presents a simple model of biomimetic catalysts and outlines possible strategies for other biomimetic manufactures.
研究领域:
材料科学
·
环境科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
Materials Chemistry Frontiers
·
2018
·Vol. 2
·期 6
·1155-1164
·
IF 0
Zhen Chen,Bo Zhao,Ya-Chuan He,Hao-Ran Wen,Xian-Zhu Fu,Rong Sun,Ching-Ping Wong
NiCo2O4 nanoframes with a nanosheet surface are fabricated using Cu2O nanoframes as a template. The size of the NiCo2O4 nanoframe is about 450 nm, and the thickness of the surface nanosheet is about 10 nm. Compared with Co3O4 and NiO nanoframes, NiCo2O4 nanoframes as electrocatalysts demonstrate much higher catalytic activity and stability for the oxygen evolution reaction (OER). The superior electrocatalytic performance of NiCo2O4 nanoframes might be attributed to the large surface area and synergistic effect of Ni and Co.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
BIOSENSORS & BIOELECTRONICS
·
2023
·
IF 12.6
Shiyu Liu,Jinyue Shi,Yu Lin,Hu Luo,Yeyu Wu,Jun Yan,Xuecai Tan,Ke-Jing Huang
Thalassemia is a globally prevalent single-gene blood disorder, with nearly 7% of the world's population being carriers. Therefore, the development of specific and sensitive methods for thalassemia detection holds significant importance. Herein, a sandwich-type electrochemical/colorimetric dual-mode biosensor is developed based on gold nanoparticles (AuNPs)/graphdiyne (GDY) and DNA nanoframeworks for ultra-sensitive detection of CD142 gene associated with sickle cell anemia. Utilizing AuNPs/GDY as the substrate electrode, the fabricated sandwiched DNA nanoframework not only improves selectivity but also introduces numerous signal probes to further amplify the output signal. In the electrochemical mode, glucose oxidase catalyzes the oxidation of glucose, generating electrons that are transferred to the biocathode for a reduction reaction, resulting in an electric signal proportional to the target concentration. In the colorimetric mode, glucose oxidase catalyzes the generation of H 2 O 2 from glucose, and with the aid of horseradish peroxidase , H 2 O 2 oxidizes 3,3′,5,5′-tetramethylbenzidine to produce a colored product, enabling colorimetric detection of the target. The dual-mode biosensor demonstrates a detection range of 0.0001–100 pM in the electrochemical mode and a detection range of 0.0001–10,000 pM in the colorimetric mode. The detection limit in the electrochemical mode is determined to be 30.4 aM ( S/N=3 ), while in the colorimetric mode is of 35.6 aM ( S/N=3 ). This dual-mode detection achieves ultra-sensitive detection of CD142, demonstrating broad prospects for application.
研究领域:
生物传感技术
·
医学遗传学
·
纳米生物学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Nano Today
·
2024
·
IF 13.2
Zhihao Lin,Guangyang Liu,Bin Sheng,Yiming Zhao,Dan Xu,Zhijian Wu,Jie Zhou,Meng Zhang,Ge Chen,Jing Wang,Jun Lv,Huan Lin,Donghui Xu
Nanoplastics, as a novel pollutant, are widely found in the environment and water, which also can be migrated to vegetables and fruits through irrigation water and the growing process, posing threat to the human health. In this study, post-modification strategy was implemented to synthesize a series of fine-tuning hierarchically porous ZIF-derived nanoframework (Zn-Co-Ni-ZIF, Zn-Co-TA-ZIF and ZIF67-Ni-ZIF) with various morphologies and structures to investigate the relationship between the polystyrene nanoplastics (PS-NPs) adsorption performance and structure property. The correlation degree between PS-NPs adsorption property and structure parameter followed the order of the intensity of Co2p > the intensity of M-N > the number of linker deficiencies > crystal defect > zeta potential. The gray models (GM) (1,1) between adsorption capacity and evaluation items were successfully established (C < 0.342; RSD < 18.108 %) but zeta potential. A highly linked association (R 2 = 0.9561) between the PV meso /PV micro and equilibrium constants k t 2 may be discovered. The combined findings from experimental analysis and Density Functional Theory calculations demonstrated that the adsorption capacity of adsorbents for PS-NPs was greatly enhanced by the introduction of additional defects and the reinforcement of adsorbent-adsorbate interactions, including electrostatic and coordination interactions. Among the selected materials, Zn-Co-ZIF and Zn-Co-Ni-(60 mg)-ZIF exhibited better resistance to acid, alkali, and salt. Moreover, the PS-NPs removal efficiency of Zn-Co-ZIF and Zn-Co-Ni(60 mg)-ZIF were > 83.55 % and > 87.80 %, respectively, in irrigation water, watermelon, strawberry, and carrot, meeting the environmental and food safety. Therefore, this work provides valuable insights into the modification of MOFs to improve the elimination of micropollutants in water, fruit, vegetable, as well as a comprehensive comprehension of the correlations between structure and performance.
研究领域:
环境科学
·
材料科学
·
食品科学
✓ 已验证
产品关联
DOI
高影响因子
ACS Sustainable Chemistry & Engineering
·
2024
·
IF 7.1
Tianhang Liu,Kaisheng Yao,Hang Li,Qi Wang,Tianhang Han,Aozhou Wang,Haili Zhao,Weiwei Lu
Developing a simple, environmentally friendly, and mild method to one-step prepare bimetallic nanoframes is pretty important but still technically challenging. In this paper, a simple and easy-to-operate ionic liquid (IL)-regulated protocol is proposed to fabricate Au–Pd superbranched trigonal nanoframes (STNFs) in water at room temperature. In the aqueous solution containing precursors (Na2PdCl4 and HAuCl4) and a reducing agent (ascorbic acid), a common IL 1-octyl-3-methylimidazolium chloride ([C8mim]Cl) was used to guide the anisotropic growth and construction of Au–Pd STNFs, brightly showing green and energy-saving characteristics. Au–Pd STNFs take shape as unique two-dimensional (2D) trigonal frameworks containing multilevel orderly branches. It is found that [C8mim]Cl is crucial to the formation of Au–Pd STNFs. Owing to the unique structures, high specific surface areas, large freestanding sizes, and probably electronic effects between Au and Pd, Au–Pd STNFs-1 exhibit dramatically enhanced catalytic activity, selectivity, durability, and convenience for recycling in the 4-nitrostyrene hydrogenation reaction. Specifically, 4-nitrostyrene can be converted completely only within 5.0 min at 25 °C under atmospheric pressure, and the selectivity toward 4-nitroethylbenzene is as high as 100% and maintains good performance after five cycles. It is expected that well-constructed Au–Pd STNFs also display advanced potential in other applications.
研究领域:
材料科学
·
催化化学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
CRYSTAL GROWTH & DESIGN
·
2018
·
IF 3.972
Pengfang Zhang,Yun Xiao,Hui Sun,Xiaoping Dai,Xin Zhang,Haixia Su,Yuchen Qin,Daowei Gao,Axiang Jin,Hai Wang,Xiubing Wang,Shigang Sun
Morphology-controlled synthesis of metal–organic frameworks (MOFs) is of tremendous importance to understand the morphology–structure–property relationships. Although great emphasis has been placed on the controllable synthesis of MOFs, the preparation of hollow and nanoframe-like MOFs, especially using the microwave irradiation method, remains a great challenge. In the present work, we report microwave-assisted synthesis of hollow butterfly and ring zeolitic imidazolate framework-8 (ZIF-8) with the stimuli of Ni ions. Interestingly, the sphere, butterfly, and fiber ZIF-8 catalysts were also fabricated when adjusting the weight ratio of Zn and Ni resources. Specifically, sphere, butterfly, hollow butterfly, and ring particles have maintained the ZIF-8 structure. On the basis of the time sequential experiments, we inferred that the formation of hollow butterfly and ring particles is driven by the change of surface energy. The Knoevenagel reaction was carried out to explore the catalytic activity of these ZIF materials. The ring particles with ZIF-8 structure showed the highest catalytic activity. The open structure, thin walls, and the amount of basicity have been extensively discussed to shed light on the superior catalytic performance of ring particles.
研究领域:
材料科学
·
催化化学
✓ 已验证
产品关联
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2016
·
IF 4.803
Huiyun Yang,Haijun Wang,Chengyi Xiong,Yuting Liu,Ruo Yuan,Yaqin Chai
In this work, an electrochemiluminescence (ECL) immunosensor for ultrasensitive detection of mucin-1 (MUC1) was designed with N-(aminobutyl)-N-(ethylisoluminol) (ABEI) and host-guest inclusion functionalized Platinum@Copperhierarchicaltrigonalbipyramidnanoframes(Pt@Cu HNFs) as signal label. At First, Pt@Cu HNFs were prepared to load abundant amine-modified β-cyclodextrin (β-CD) and luminophore ABEI via Pt-N bond. Based on the effect of host-guest recognition, ferrocenecarboxylic acid (FCA) as a catalyst of ABEI-H 2 O 2 system was linked on the cavity of amine-modified β-CD to form nanocomposite of Pt@Cu HNFs-ABEI-(β-CD-FCA). Both Pt@Cu HNFs and FCA could catalyze H 2 O 2 decomposition, which significantly enhanced the ECL intensity of ABEI-H 2 O 2 system. Forthermore, simultaneously immobilizing ABEI and its catalyst FCA on Pt@Cu HNFs with good electrical conductivity could greatly increase the electron transfer efficiency in the ECL reaction, leading to a further signal amplification. Then, due to its good biocompatibility, large specific surface area and high luminous efficiency, the obtained Pt@Cu HNFs-ABEI-(β-CD-FCA) could act as an ideal nanocarrier of detection antibody (Ab 2 ). As a result, a desirable “signal-on” ECL immunosensor was proposed for the detection of MUC1 with a wide linear range from 1 × 10 −5 ng mL −1 to 10 ng mL −1 and a relatively low detection limit of 3.3 fg mL −1 (S N −1 = 3), making this approach hold great potential for protein analysis.
研究领域:
生物传感
·
分析化学
·
医学检测
✓ 已验证
DOI
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2020
·
IF 16.683
Xinxin Zhu,Lei Huang,Min Wei,Panagiotis Tsiakaras,Pei Kang Shen
A novel self-etched engineering of Pt-Co nanodendrite in nanoframe (Pt-Co ND-NF) synthesized through a simple one-pot approach, for the first-time. The modulation mechanism of Pt-Co ND-NF formation is established by investigating critical factors of adjusting: i) the water amount, ii) the ratio of mixed solvent oleylamine to oleic acid and iii) the amount of surfactant hexadecyl trimethyl ammonium bromide. Besides, the formation process of Pt-Co ND-NF is carefully explored with reaction time progress, further confirming the state of Pt-Co nanoframe blockade on Pt-Co nanodendrite (ND). Pt-Co ND-NF exhibits improved catalytic performance for oxygen reduction reaction (ORR), in which mass activity (0.939 A mg Pt −1 ) is much higher (∼500 %) than that of commercial Pt/C (0.187 A mg Pt −1 ), respectively. Furthermore, Pt-Co ND-NF shows enhanced stability during the accelerated durability tests (ADTs) for 50,000 cycles. Pt-Co nanodendrites in nanoframe with Pt skin, create a novel protection with an external nanoframe (NF) and obtain a unique catalytic material Pt-Co ND-NF, which could provide promising ways for highly strengthening catalytic activity.
研究领域:
材料科学
·
电化学
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2022
·
IF 7.392
Yangyang Ren,Baosong Li,Chenhao Lv,Fan Gao,Xiaojing Yang,Lanlan Li,Zunming Lu,Xiaofei Yu,Xinghua Zhang
Nanoframe structures with rich defects are desirable in the field of catalysis, whereas the precise synthesis of them remains challenging. In this study, the defect-rich PtPdCu flower-like nanoframes have been successfully synthesized by oxidative etching of pre-prepared PdCu@Pt core-shell nanoflowers. According to the experiment results, the formation of PdCu@Pt core-shell nanoflowers plays a decisive role in synthesizing PtPdCu flower-like nanoframes. Due to its novel structures with rich defects and the synergistic effect between Pd, Cu and Pt, PtPdCu flower-like nanoframes exhibit enhanced catalytic activity. In special, the mass activity of PtPdCu flower-like nanoframes is 2.0 and 7.0 times as large as that of PdCu@Pt core-shell nanoflowers and Pt black for methanol oxidation reaction (MOR) in acidic medium, respectively. Furthermore, PtPdCu flower-like nanoframes present exceptionally stability even after the long-term accelerating test.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
Inorganic Chemistry Frontiers
·
2021
·Vol. 8
·期 9
·2280-2287
·
IF 6.569
Yangyang Ren,Chuanliang Li,Baosong Li,Fan Gao,Xinghua Zhang,Xiaojing Yang,Lanlan Li,Zunming Lu,Xiaofei Yu
Here, PtPd nanoframes were prepared by etching Pd@PdPt core–shell rhombic dodecahedrals (RDs) with Fe3+ provided by iron chloride hexahydrate (FeCl3·6H2O). Based on the experimental results, PtPd nanoframes were formed due to the etching of Pd cores. In terms of catalytic performance, the measured specific activity and mass activity of PtPd nanoframes were 1.11 mA cm−2 and 840.38 mA mg−1, respectively, which were much higher than those of Pd@PdPt core–shell RDs, Pt black and Pt/C, suggesting the preeminent activity of PtPd nanoframes. Meanwhile, PtPd nanoframes showed better stability compared with Pd@PdPt core–shell RDs, Pt black and Pt/C. The strengthened catalytic properties may be caused by the larger surface area owing to the novel structure and the strong electronic interaction between Pt and Pd.
研究领域:
材料科学
·
化学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）