ADVANCED FUNCTIONAL MATERIALS
·
2024
·Vol. 34
·期 33
·2316654
·
IF 18.5
Feng Xu,Ming Chen,Yaoxuan Cui,Libin Qian,Jin Wang,Zhao Han,Yanli Lu,Di Wang
The electronic nose aims to emulate the olfactory capabilities of osmatic animals, utilizing olfactory sensing array with different sensing characteristics to perceive odors. However, the separate precursors and preparation methods of sensing materials pose challenges in the fabrication of an olfactory sensing array. In this work, the customization of the surface crystal phase of Sr─Fe─O materials (SFO) is demonstrated through the control of annealing temperature, enabling the simple fabrication of an olfactory sensing array using a single precursor. Significantly, the SFO materials exhibit diverse proportions of surface crystal phases, showcasing varied selective characteristics toward volatile organic compounds (VOCs). The materials also demonstrate remarkable responsiveness, linearity, and response/recovery times. Furthermore, this study unraveles the intricate gas-sensor mechanism through first principle calculations, revealing that Fe spin-down d band center of Sr 3 Fe 2 O 7 , located near the Fermi level, significantly enhances the binding strength of intermediates, leading to a higher response specifically to certain VOCs. Integrating these materials into a unified device, the sensor array quantitatively and discriminatively detected different VOCs. The results indicate that SFO materials hold tremendous potential as a promising and easily manufacturable olfactory material system.
研究领域:
材料科学
·
传感器与仪器
·
气体传感技术
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钙钛矿材料
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电子鼻系统
✓ 已验证
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2024
·
IF 9.4
Yunlong Li,Chunsheng Li,Shuang Liu,Qiang Wang,Zhengyang Tang,Jiawei Qu,Jin Ye,Yong Lu,Jun Wang,Kefen Zhang,Yujie Fu,Jiating Xu
NH 2 -MIL-88B (Fe) (MOF) is a promising photocatalytic material for antitumor therapy because of its distinctive electronic structure. However, inadequate separation of photo-generated electrons and slow reaction rate in low/high-valence iron (Fe) cycles limit their clinical application. In the present study, “electronic storage station” as a ligand-to-metal charge transfer bridge bond was constructed to inhibit recombination of electron/hole under 650 nm laser irradiation. Cupric (Cu) ions and gallic acid (GA) were self-assembled into a MOF (denoted as CGMOF) to create an Fe O(GA) Cu bridge bond. GA, characterized by robust electron delocalization and abundant electron-donating groups, significantly enhances electron transfer efficiency for photodynamic therapy (PDT). CGMOF can respond to endogenous glutathione and release cuprous ions, accelerating the iron ion/ferrous ion cycles for chemodynamic therapy (CDT). The released Fe species can serve as T 2 -weighted magnetic resonance imaging contrast. Extended X-ray absorption fine structure spectra confirmed the presence of GA-containing Fe O Cu bonds in CGMOF. Furthermore, a series of photo-electrochemical tests confirmed that the formation of Fe O(GA) Cu bond prominently elevated the redox capacity and increased the carrier density of CGMOF by 2.74-fold compared to that of MOF. In addition, cinnamaldehyde was grafted onto CGMOF for tumor-responsive hydrogen peroxide self-supply. Concurrently, hyaluronic acid was surface-modified to achieve the targeted delivery of nano-photosensitizers. In summary, this study presents an innovative approach for engineering Fe-based metal–organic frameworks for synergetic PDT/CDT applications.
研究领域:
纳米技术
·
癌症治疗
·
材料科学
·
光化学
·
生物医学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2024
·
IF 9.4
Yanyu Song,Xianbo Sun,Long D. Nghiem,Jun Duan,Wen Liu,Yongdi Liu,Zhengqing Cai
Building a heterojunction is a fascinating option to guarantee sufficient carrier separation and transfer efficiency, but the mechanism of charge migration at the heterojunction interface has not been thoroughly studied. Herein, MIL-53(Fe)/Bi 4 O 5 I 2 photocatalyst with a Z-scheme heterojunction structure is constructed, which achieves efficient photocatalytic decontamination under solar light. Driven by the newly-built internal electric field (IEF), the formation of Fe-O-Bi electron migration channel allows for rapid separation and transfer of charge carriers at the heterojunction interface, confirmed by the material characterization and density functional theory (DFT) calculation. The narrower band gap and improved visible light response also contribute to the enhanced photocatalytic activity of composite materials. With levofloxacin as the target pollutant, the optimal MIL-53(Fe)/Bi 4 O 5 I 2 achieves complete removal of pollutant within 150 min, the photocatalysis rate of which is ca. 4.4 and 26.0 times that of pure Bi 4 O 5 I 2 and MIL-53(Fe), respectively. Simultaneously, the optimal composite material exhibits satisfactory photodegradation of seven fluoroquinolones, and the photocatalysis rates are as follows: lomefloxacin > ciprofloxacin > enrofloxacin > norfloxacin > pefloxacin > levofloxacin > marbofloxacin. DFT calculations reveal a positive relationship between degradation rate and Fukui index (ƒ 0 ) of main carbon atoms in seven fluoroquinolones. This study sheds light on the existence of electron migration channels at Z-scheme heterojunction interface to ensure sufficient photoinduced carrier transfer, and reveals the influence of pollutant structure on photolysis rate.
研究领域:
材料科学
·
环境科学
·
化学
·
光化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2025
·
IF 8.5
Qian Ren,Tingting Tian,Bin Wang,Jun Pan,Yong Huang,Li Zhong,Yehong Wang,Xia Wang,Xiao Huang
Photodynamic therapy (PDT) remains underutilized as a primary cancer treatment due to the limited lethality of reactive oxygen species (ROS) and poor targeting efficiency of traditional photosensitizers. This the aim of the study is to develop a Fe₃O₄@ZnO nanoparticle photosensitizer co-loaded with anti-EGFR antibody, brusatol, and Nrf2-siRNA to improve the therapeutic effect of PDT. This system can be guided to tumors by a magnetic field and further targets cancer cells through EGFR-specific binding. Under UVA light, brusatol and Nrf2-siRNA are released, enabling combined chemo-, gene, and photodynamic therapy. With the photosensitizer treatment, ROS levels in cutaneous squamous cell carcinoma cells were elevated by 191.09 ± 10.02 % through suppression of Nrf2 and its associated antioxidant defenses, significantly enhancing cell lethality and reducing cell viability by 80.43 ± 9.37 %. In vivo studies further demonstrated a tumor suppression rate of 76.30 ± 5.12 % in nude mice, highlighting the robust anti-tumor efficacy of the photosensitizer and its potential for clinical application in targeted cancer therapy. The biocompatibility and high therapeutic efficacy of this photosensitizer highlight its promise as a safer and more effective option for treating cutaneous squamous cell carcinoma.
研究领域:
癌症治疗
·
纳米技术
·
药理学
·
分子生物学
·
生物医学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
MINERALS ENGINEERING
·
2018
·
IF 2.707
Baijun Yan,Daya Wang,Liushun Wu,Yuanchi Dong
Stone coal, a kind of important vanadium-bearing resources in China, accounts for about 87% of the domestic reserves of vanadium. But the currently developed techniques to extract vanadium from stone coal are all confronted with environmental problems. For example, large quantities of caustic or greenhouse gases discharged in the oxidizing roast process, enormous consumptions of acid or alkali in the leaching step and massive tailings containing toxic V 5+ ions. With a view to solve those problems, an innovative process for pre-concentration of vanadium from stone coal was designed and confirmed on a laboratory scale. The distinct features of this design are as follows. Firstly, the environment-friendly Fe 2 O 3 is selected as a capturer of vanadium. Secondly, the natural reducing property of stone coal is utilized to promote the formation of magnetic V-rich phase, Fe 2 VO 4 . Thirdly, a high-grade vanadium concentrate is obtained by magnetic separation method. The practicability of this design was confirmed using industrial stone coal on a laboratory scale. When 10 mass% Fe 2 O 3 relative to stone coal was added and roasted at 1200 °C for 3 h, a high-grade concentrate containing vanadium higher than 14 mass% was obtained, and more than 91% of the total vanadium in stone coal was recovered.
研究领域:
冶金学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2023
·
IF 6.7
Ze Zhang,Jingyu Sun,Xue Chen,Yu Zhao,Jinghong Wen,Jiandang Liu,Qilin Yu,Lu Liu
Defect engineering is of great importance to tailor photocatalytic activity, which is uncertain in determining the antibacterial performance relationship with defect types. In this study, Fe 3 O 4 nanoparticles with different vacancies were successfully prepared to investigate their distinct effects on the near-infrared (NIR) driven photocatalytic bacterial inactivation activity. Compared to the Fe 3 O 4 -1 with Fe-O vacancies, Fe 3 O 4 -2 with Fe-O–Fe vacancies contained improved photogenerated electron-hole separation efficiency and stronger adsorption ability to O 2 , and thus greatly facilitated the generation of reactive oxygen species (O 2 − and OH). Meanwhile, Fe 3 O 4 -2 with a narrow band gap can enhance NIR light absorption and the generation of heat. Moreover, Fe 3 O 4 -2 with Fe-O–Fe vacancies possessed enhanced bacteria-binding ability, thereby decreasing the diffusion distance of the released reactive oxygen species and heat, which could significantly accelerate bacterial killing. Owing to these tendencies, Fe 3 O 4 -2 fully inactivated 99% Escherichia coli ( E. coli ) and Bacillus subtilis ( B. subtilis ) within 10 min NIR irradiation, displaying better inactivation efficiency than Fe 3 O 4 -1. This study reveals the defect type-dependent photocatalytic behaviors, providing new insights into the antibacterial mechanisms of Fe 3 O 4 .
研究领域:
材料科学
·
光催化
·
纳米技术
·
细菌学
✓ 已验证
产品关联
DOI
高影响因子
Nature Communications
·
2020
·Vol. 11
·期 1
·1-8
·
IF 12.121
Chen Kejun,Liu Kang,An Pengda,Li Huangjingwei,Lin Yiyang,Hu Junhua,Jia Chuankun,Fu Junwei,Li Hongmei,Liu Hui,Lin Zhang,Li Wenzhang,Li Jiahang,Lu Ying-Rui,Chan Ting-Shan,Zhang Ning,Liu Min
Iron phthalocyanine (FePc) is a promising non-precious catalyst for the oxygen reduction reaction (ORR). Unfortunately, FePc with plane-symmetric FeN 4 site usually exhibits an unsatisfactory ORR activity due to its poor O 2 adsorption and activation. Here, we report an axial Fe–O coordination induced electronic localization strategy to improve its O 2 adsorption, activation and thus the ORR performance. Theoretical calculations indicate that the Fe–O coordination evokes the electronic localization among the axial direction of O–FeN 4 sites to enhance O 2 adsorption and activation. To realize this speculation, FePc is coordinated with an oxidized carbon. Synchrotron X-ray absorption and Mössbauer spectra validate Fe–O coordination between FePc and carbon. The obtained catalyst exhibits fast kinetics for O 2 adsorption and activation with an ultralow Tafel slope of 27.5 mV dec −1 and a remarkable half-wave potential of 0.90 V. This work offers a new strategy to regulate catalytic sites for better performance.
研究领域:
材料科学
·
电化学
·
理论计算
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Qi Yang,Chang-Wei Bai,Yi-Jiao Sun,Yu-Jie Liu,Kun-Jie Hou,Fei Chen
Heterogeneous iron materials show potential for activating peroxydisulfate (PDS). However, these systems may be constrained by low efficiency and secondary pollution. The visible-light-assisted activation has been demonstrated as a feasible and effective approach to enhance PDS activation by iron-based materials. In this study, a visible-light-responsive Bi 2 WO 6 /Fe 2 O 3 heterojunction photocatalyst was synthesized to improve the ability of Fe 2 O 3 for PDS activation through an effective Fe(III)/Fe(II) cycle. Rapid tetracycline (TC, a common antibiotic) removal (91.7% within 60 min at a concentration of 20 mg·L -1 ) was achieved in the constructed Bi 2 WO 6 /Fe 2 O 3 /PDS/ vis system under conditions of 0.3 g·L -1 PDS and 0.3 g·L -1 catalyst. The corresponding pseudo-first-order rate constant reached 4.16 × 10 -2 min - 1 , which was 8.42 and 16.38 times higher than those of Bi 2 WO 6 /Fe 2 O 3 / vis and Bi 2 WO 6 /Fe 2 O 3 /PDS systems, respectively. Moreover, the Bi 2 WO 6 /Fe 2 O 3 exhibited favorable stability and reusability even after five cycles. Lastly, a catalytic mechanism for TC removal and PDS activation was proposed based on quenching experiments and electron spin resonance (ESR) tests. The SO 4 • - and • OH played a major role in TC removal, while • O 2 – and 1 O 2 contributed as auxiliary factors. This study presents a promising strategy for activating PDS using cost-effective and stable Fe(III)-based heterojunctions, and such an idea can be used to design catalysts for other high-value reactions.
研究领域:
环境科学
·
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Juan Du,Hao Fang,Jialiang Ma,Jing Lin,Shikuo Li,Yu Jiang,Fangzhi Huang
Synergistic photothermal-magnetothermal activation overcomes environmental interference (e.g., cloud cover) that critically limits solar evaporator efficiency, enabling robust all-weather vapor generation. Herein, we demonstrate in-situ synthesis of a covalently integrated Fe₃O₄/hydrogel composite via ice-templating and interfacial covalent bonding engineering. Si-O-Fe bonds anchor KH-570 onto Fe₃O₄, enabling copolymerization of surface-grafted methacryloyloxy groups with acrylamide monomers for covalent network grafting, while programmed gravitational sedimentation yields a hierarchical porous hydrophilic magnetic gel solar interfacial evaporator (MSE) with magnetothermal interface. This architecture reduces evaporation enthalpy, achieving 2.33 kg m −2 h −1 under 1 sun. Significantly, synergistic activation by an alternating magnetic field and 1 sun irradiation boosts the evaporation rate for 3.5 wt% saline water to 2.94 kg m −2 h −1 . This work establishes the magnetothermal-photothermal synergy within the covalently integrated MSE as an effective material design paradigm for all-weather solar desalination.
研究领域:
材料科学
·
化学工程
·
环境科学
·
纳米技术
·
能源技术
✓ 已验证
产品关联
DOI
高影响因子
MICROCHIMICA ACTA
·
2025
·Vol. 192
·期 6
·1-11
·
IF 5.3
Zhang Xingping,Feng Yujun,Chen Xiaowei,Wang Yuanyuan,Guo Yingli,Yang Xin,Yang Hualin
A sensitive fluorescence and colorimetric dual-mode detection method based on Eu 3+ and Fe 3 O 4 @MoS 2 nanocomposites was constructed. In this technique, tetracycline antibiotics (TCs) chelated with Eu 3+ to form a Eu 3+ -TCs complex which emits red fluorescence at 620 nm through the antenna effect. At the same time, Eu 3+ -TCs complex enhances the peroxidase-like activity of Fe 3 O 4 @MoS 2 to catalyze the oxidation of 3,3’,5,5’-tetramethylbenzidine (TMB) that can produce a colorimetric signal. This proposed strategy has been used to detect three antibiotics including oxytetracycline (OTC), tetracycline (TC), and chlortetracycline hydrochloride (HCl-CTC). The linear ranges of the new assay for OTC, TC, and HCl-CTC were 0.1–25 μM, 0.5–25 μM, and 0.05–5 μM with the detection limits of 0.016 μM, 0.039 μM, and 0.036 μM, respectively. Meanwhile, this new method was fast and convenient which can complete the detection in 22 min. The assay has been effectively applied to TCs detection in tap water, lake water and honey with satisfactory recoveries of 90.55–109.86%. Graphical
研究领域:
分析化学
·
环境科学
·
食品科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Environmental Chemical Engineering
·
2025
·
IF 7.2
Xuyao Qiao,Shuguang Ning,Hongyao Zhao,Ruiting Ni,Wanyu Zhang,Yangping Zhang,Linzhi Zhai,Danhong Shang,Yanyun Wang,Tongyi Yang,Mengnan Wang,Fu Yang
Addressing the dual challenges of freshwater scarcity and pollution elimination requires innovative technologies that rationally integrate multiple functions. This study developed a representative dual-functional solar evaporator by coupling photothermal Fe₃O₄ nanospheres with oxygen-doped CdS (CdS-O) within a sponge-based hydrogel matrix, achieving concurrent high-efficiency solar-driven water regeneration and pollutant degradation. The design leverages the unique roles of two unique components, wherein, Fe₃O₄ endows the evaporator with broadband solar absorption (300–800 nm) and an superior photothermal conversion efficiency of 80 %, while oxygen doping CdS-O narrows its bandgap (from 2.31 eV to 2.29 eV), enhancing visible-light harvesting and charge separation. Crucially, the synergistic interplay between Fe₃O₄ and CdS-O establishes a self-sustained photo-Fenton-like mechanism. CdS-O generates H₂O₂ via photogenerated electron reduction of O₂, and Fe₃O₄ acts as an electron acceptor to accelerate Fe 3 + /Fe 2+ cycling, Fe²⁺ ions react with H₂O₂ via a Fenton-like process to produce ·OH radicals for pollutant mineralization. Simultaneously, the hydrogel-sponge architecture ensures rapid water transport and localized heat confinement, enabling an evaporation rate of 1.55 kg·m −2 ·h −1 under 1 sun irradiation. The system demonstrates remarkable dual-functionality: 86.9 % tetracycline degradation in lake water within 240 minutes and 89 % photocatalytic activity retention after six cycles. This work overcomes the limitations of conventional single-function systems by unifying photothermal evaporation and photocatalytic oxidation into a scalable platform, offering a sustainable solution for simultaneous water production and purification through material synergy and energy-efficient design.
研究领域:
环境科学
·
材料科学
·
能源技术
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
·
2020
·Vol. 326
·期 2
·1307-1321
·
IF 1.137
Yin Na,Ai Yong,Xu Yuanxin,Ouyang Yanquan,Yang Pengfei
Magnetic carbon aerogels were prepared from inexpensive and readily available winter melon to adsorb U(VI). The morphology, structure, magnetism, characteristic functional groups and chemical bonds of magnetic carbon aerogels were characterized by TEM, SEM, XRD, BET, VSM, FT-IR, XPS. Under the condition of 303 K and pH 6, magnetic carbon aerogel reached adsorption equilibrium within 120 min, with the adsorption capacity of 230.3 mg g –1 , much higher than that of carbon aerogel (77.9 mg g –1 ), which is the function of Fe–O. The good magnetism of magnetic carbon aerogels allows it to be easily separated from the solution by applying magnetic field. The adsorption isotherm data accord with Langmuir isothermal model. Adsorption is a spontaneous and endothermic process.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）