CHEMICAL ENGINEERING JOURNAL
·
2016
·
IF 5.31
Nailing Gao,Ziyang Lu,Xiaoxu Zhao,Zhi Zhu,Youshan Wang,Dandan Wang,Zhoufa Hua,Chunxiang Li,Pengwei Huo,Minshan Song
In order to realize the rational utilization of waste, C/Fe 3 O 4 was obtained by using biomass as the carbon source and prepared via one-step method, afterwards, a double conductive C/Fe 3 O 4 /Bi 2 O 3 composite photocatalyst was further synthesized via solvothermal method. Due to the good double conductivity, the electrons in Bi 2 O 3 could be transported to C/Fe 3 O 4 , which greatly inhibited the recombination of electron-hole pairs, it is worth noting that the double conductivity effectively blocked the reverse transfer of electrons to Bi 2 O 3 . Consequently, the photodegradation rate of C/Fe 3 O 4 /Bi 2 O 3 composite photocatalyst reached 91%, which was much higher than that of pure Bi 2 O 3 . In addition, the mechanism exploration experiment showed that h + was the main activity specie, meanwhile, the photocatalytic electron transfer mechanism was also investigated.
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Physical Chemistry C
·
2021
·
IF 4.126
Yichun Peng,Shenghua Ma,Zhihua Shao,Qiangzhou Rong
Photoacoustic imaging is a new noninvasive imaging technology that combines the advantages of optical imaging and ultrasound imaging. Using materials with good photoacoustic effects can improve imaging contrast and resolution. With the development of photoacoustic imaging in the field of medical treatment, research pertaining to photoacoustic functional materials is progressing continuously. In this study, we effectively synthesize a multifunctional photoacoustic and magnetocaloric nanomaterial, i.e., SiO2/C/Fe3O4 via a one-step synthesis method. For theoretical analysis, the finite elemental analysis method is used to simulate the photoacoustic and magnetocaloric signals of the material. To obtain the experimental results, the SiO2/C/Fe3O4 suspension is excited by a 532 nm nanosecond pulsed laser irradiation to obtain the photoacoustic signal of the material. The temperature increase of the material is measured under a 365 kHz alternating magnetic field. The results show that SiO2/C/Fe3O4 exhibits good photoacoustic and magnetocaloric effects, rendering it feasible as a contrast agent for photoacoustic imaging and magnetocaloric therapy.
研究领域:
医学影像学
·
材料科学
·
生物医学工程
✓ 已验证
产品关联
DOI
高影响因子
CHEMOSPHERE
·
2022
·
IF 8.943
He Zhang,Yu Mei,Fang Zhu,Fenting Yu,Sridhar Komarneni,Jianfeng Ma
A C@Fe 3 O 4 material, Fe 3 O 4 coated with carbon, was prepared by a simple one-pot hydrothermal method . The C@Fe 3 O 4 material was investigated with persulfate (PS) and light to degrade tetracycline (TC) as a function of pH, aeration conditions and quenching. Experimental results suggest that TC was effectively degraded in the C@Fe 3 O 4 /PS/Vis system. In addition, due to the availability of different main active species in this catalytic system, TC degradation was possible under both strong acid and strong alkali pH conditions. The presence of dissolved oxygen can also generate oxygen-active species, such as superoxide radicals (O 2 • - ) and singlet oxygen ( 1 O 2 ), to decompose TC organic matter in solution. Simply put, C@Fe 3 O 4 /PS/Vis catalytic system removed pollutants by the formation of O 2 • - , 1 O 2 , hydroxyl radicals (•OH) and sulfate radicals (SO 4 • - ) species for degrading TC. In addition, the stability of the C@Fe 3 O 4 material was found to be outstanding.
研究领域:
环境科学
·
化学
✓ 已验证
DOI
高影响因子
Catalysis Science & Technology
·
2016
·Vol. 6
·期 17
·6513-6524
·
IF 5.287
Ziyang Lu,Xiaoxu Zhao,Zhi Zhu,Minshan Song,Nailing Gao,Youshan Wang,Zhongfei Ma,Weidong Shi,Yongsheng Yan,Hongjun Dong
A novel hollow capsule-like recyclable functional ZnO/C/Fe3O4 was synthesized by employing the convenient and mild sol–gel method combined with the surface imprinting technique, which possessed good light response ability, superior magnetic separation performance and excellent reproducibility. This as-prepared functional ZnO/C/Fe3O4 was proved to not only exhibit high photocatalytic activity but also possess a strong three-dimensional oriented ability to selectively recognize and photodegrade danofloxacin mesylate. Through getting insight into the mechanism, we can confirm that in this photocatalytic reaction, h+ and ˙OH play major roles compared with ˙O2−. This work not only puts forward a novel design idea of functional semiconductor materials but also is expected to be widely applied to the oriented recognition and removal of a target substance according to the practical requirement.
研究领域:
环境科学
·
材料科学
✓ 已验证
DOI
高影响因子
RSC Advances
·
2025
·Vol. 15
·期 50
·42432-42442
·
IF 4.6
Baowang Miao,Guidong Zhu,Shimin Lin,Chi Zhang,Yuze Wang,Dongxun Chen,Yanjie Liang,Chengwei Wang
Photothermal therapy (PTT) is limited by its shallow penetration depth, whereas high-dose radiotherapy (RT) can cause significant side-effects. To address these limitations, synergistic therapies integrating RT with PTT have been proposed and investigated as promising treatment strategies. In this study, multifunctional, magnetic-targeting nanoparticles that exhibit high near-infrared absorption and strong photon attenuation were successfully synthesized for the synergistic PTT-RT treatment of glioma. The platform consists of a Bi2S3 core encapsulated within a carbon shell. The nanoparticles were further doped with Fe3O4 to ensure arrival at the tumor site at an effective concentration to achieve optimal therapeutic outcomes, and to enable preferential aggregation at the intracranial tumor site under the guidance of an external magnetic field. The Bi2S3@C/Fe3O4 nanoparticles showed high biosafety and a significant synergistic therapeutic effect in combined RT and PTT, both in vitro and in vivo. The feasibility of Bi2S3@C/Fe3O4 nanoparticles for glioma treatment was systematically evaluated, providing evidence of the applicability of Bi-based nanomaterials in photothermal radiotherapy.
研究领域:
纳米医学
·
肿瘤学
·
放射治疗
·
光热治疗
·
生物医学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
GREEN CHEMISTRY
·
2014
·Vol. 17
·期 3
·1610-1617
·
IF 6.852
Bing Liu,Yongshen Ren,Zehui Zhang
In this study, Pd nanoparticles were immobilized on the core–shell structure C@Fe3O4 (carbon is the shell and Fe3O4 is the core) magnetic microspheres via in situ adsorption and reduction to generate the magnetically separable Pd/C@Fe3O4 catalyst. In this method, no excess reductant and capping reagents were required, and it is a clean, simple and green process for the preparation of the magnetic Pd nanocatalyst. The Pd/C@Fe3O4 catalyst showed high activity and extraordinary stability during the oxidation of biomass derived 5-hydroxymethylfurfural (HMF) into 2,5-furandicarboxylic acid (FDCA) under mild conditions. A study aimed at optimizing the reaction conditions such as reaction temperature, reaction solvent and base amount has been performed. Under optimal reaction conditions, HMF conversion of 98.4% and FDCA yield of 86.7% were achieved after 6 h at 80 °C. After reaction, the Pd/C@Fe3O4 catalyst could be easily recovered by an external magnet and reused without the loss of its activity.
研究领域:
化学工程
·
催化化学
·
绿色化学
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2022
·
IF 10.383
Yuying Chen,Qing Yang,Wenqin Lu,Yanjuan Zhang,Zuqiang Huang,Huayu Hu,Tao Gan
Although the core–shell structure magnetic nanocomposites have been widely used as lubricant additives, their tribological properties are still poor under high temperature and high load. Herein, the graphitized C/Fe3O4 magnetic nanocomposites (g-C/Fe3O4) with an interpenetrating network structure were successfully fabricated by an in situ hydrothermal carbonization method combined with a subsequent ball milling process at room temperature. The results showed that the ball milling process not only promoted the transformation of graphitized carbon but also effectively eliminated the interfacial effect between carbon and Fe3O4. Moreover, the g-C/Fe3O4 used as a lubricant additive in rapeseed oil exhibited excellent tribological properties and high thermo-stability under 155 °C and 980 N, with the friction coefficient reduced by 32.8% compared to the independent Fe3O4. The enhanced tribological performance of g-C/Fe3O4 could be attributed to the graphitized carbon and its interpenetrating network structure under low load force (392 N), while under high load force (980 N), it could be ascribed to the synergistic effect between the graphitized carbon and magnetic Fe3O4 nanoparticles. This work not only offers a method for the synthesis of nanocomposite lubricant additives but also shows great potential in practical applications for high-temperature tribology.
研究领域:
材料科学
·
摩擦学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2020
·
IF 10.652
Yi Wang,Chuangchuang Liu,Shaofeng Zhou,Rui Hou,Lihua Zhou,Fengyi Guan,Renlian Chen,Yong Yuan
Three-dimensional (3D) nano-structure materials with a large bacterial accessible specific area have emerged as promising electrode materials for bioelectrochemical systems (BESs), achieving high bioelectricity outputs. However, it remains a challenge that biofilms with increased thickness inhibit substrate diffusion into the 3D nano-structure during long-term operation of BESs, causing a reduction in bioenergy output. Herein, an innovative ordered 3D nano-structure electrode was fabricated by growing self-supported N-doped C/Fe 3 O 4 -nanotube composite arrays onto carbon fiber cloth ( [email protected] /Fe 3 O 4 ), using template-based deposition coupled with thermal reduction/carbonization methods. The fabricated [email protected] /Fe 3 O 4 electrode was applied as a bioelectrode in a conventional three-electrode BES and as an anode in microbial fuel cell (MFC), while their capacity to improve bioelectricity generation was assessed. Results indicate that the hierarchical N-doped C-coated nanotube arrays not only significantly enhanced conductivity and areal capacitance of the electrode, but also reduced its charge transfer resistance and provided the 3D open nano-structure with excellent biocompatibility for microbial colonization and internal diffusion of the culture substrate. Consequently, a high maximum current density (4.11 mA/cm 2 ) and coulombic efficiency (~89%) was obtained from the [email protected] /Fe 3 O 4 electrode after about 3 months of BES operation, exhibiting higher biocatalytic performance and extracellular electron transfer efficiency than the original carbon fiber cloth (CC, 1.89 mA/cm 2 ). Moreover, MFC equipped with [email protected] /Fe 3 O 4 anode produced a maximum power density of 1.21 ± 0.04 W/m 2 , which was 2.1 times higher than CC (0.58 ± 0.03 W/m 2 ). This study demonstrates the outstanding advantages of [email protected] /Fe 3 O 4 nanotube composite arrays assembled on CC, making it a potential alternative to existing 3D electrodes for high-performance BES applications.
研究领域:
材料科学
·
环境科学
·
生物技术
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Energy Materials
·
2024
·
IF 5.4
Chunbo Yang,Xiang Yan,Weiwei Gao,Yang Xia,Hongjie Liu,Liuyi Hu,Wenlong Song,Wenkui Zhang,Xinhui Xia,Hui Huang
Two-dimensional (2D) silicon nanomaterial is a promising anode for lithium-ion batteries (LIBs) due to its large specific area, short ion transport path, and minimized volume expansion. However, its batch utilization is greatly limited by complicated synthesis procedures and time or energy consumption. Herein, we report a facile strategy to construct a kind of Si@C–Fe3O4 lamellar composite with enhanced performance as a LIB anode material. The 2D Si nanosheets are thermally exfoliated from the layered Zintl compound CaSi2 reacting with CO2, followed by surface coating of the C–Fe3O4 layer via the decomposition of ferrocene. Throughout 100 cycles, the as-synthesized Si@C–Fe3O4 composite maintains a stable specific capacity of 1000 mA h g–1 at 0.2 A g–1 with a subtle decay. Compared to 2D Si nanosheets, the composite exhibits better specific capacity and rate capability, particularly at high rates. It is found that C–Fe3O4 is an efficient and low-cost component for enhancing the lithium storage capability of Si-based anodes. We expect that this study will provide a simple and scalable path to the practical fabrication of Si-based anodes toward high-performance LIBs.
研究领域:
材料科学
·
电化学
·
纳米材料
·
能源存储
·
固体化学
·
电池技术
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）