Journal of Materials Chemistry B
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2013
·Vol. 1
·期 20
·2582-2589
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IF 0
Mei-Ling Chen,Li-Ming Shen,Shuai Chen,Hui Wang,Xu-Wei Chen,Jian-Hua Wang
β-FeOOH has shown promise as a new contrast agent in magnetic resonance imaging (MRI), however, sensitive and accurate MR imaging is largely limited by its low transverse relaxivity (r2). Herein, for the first time we report in situ growth of β-FeOOH nanorods onto PEGylated graphene oxide (GO) sheets to produce a nanocomposite, e.g., GO-PEG–β-FeOOH. This nanocomposite exhibits a record ultra-high transverse relaxivity (r2) value of 303.81 mM−1 s−1, that is, >60 times higher than those achieved by hitherto reported β-FeOOH based MRI contrast agents. This well facilitates its practical use as a contrast agent for in vivo MR imaging. PEG on the surface of the GO nanocomposite improved the colloidal stability in aqueous medium. In addition, in vitro cell viability tests demonstrated that GO-PEG–β-FeOOH has minimal cellular toxicity. GO-PEG–β-FeOOH has been used for loading doxorubicin hydrochloride (DOX) with a capacity of 1.35 mg mg−1, which exhibits high efficiency in Hela cell apoptosis. These results indicated that GO-PEG–β-FeOOH provides an effective alternative to the existing nanoparticle-based contrast agents for non-invasive in vivo MR imaging and cancer therapy.
研究领域:
纳米技术
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材料科学
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生物医学工程
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癌症研究
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医学影像
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DOI
PubMed
COLLOIDS AND SURFACES B-BIOINTERFACES
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2022
·
IF 5.999
Han Hu,Ruiqi Li,Piao Huang,Zhimin Mo,Qi Xu,Tao Hu,Shijie Yao,Xiaofang Dai,Zushun Xu
Photodynamic therapy (PDT) has many exceptional advantages in cancer treatment, such as minor trauma, low toxicity side effects, and strong adaptability, effectively overcoming some obstacles of traditional therapy and providing more revolutionary opportunities for curing cancer. Chlorin e6 (Ce6) exhibits excellent singlet oxygen generation and conversion efficiency under near-infrared laser irradiation and is a promising PDT photosensitizer. However, its hydrophobicity, short half-life and lack of tumor specificity limit its in vivo anticancer application. Therefore, this work has designed and prepared a multifunctional nanoplatform, Ce6/ [email protected] , to efficiently deliver Ce6. Nanoparticles exhibit excellent dispersion and stability in deionized water, PBS and DMEM, and the blood half-life is 3.98 ± 0.31 h. The nanoplatform demonstrates effective tumor targeting and accumulation, overcoming the obstacles of the biological application of Ce6. Iron ions can exert a chemodynamic therapy (CDT) effect by reacting with overexpressed H 2 O 2 in the tumor to generate toxic hydroxyl radicals (·OH). Moreover, FeOOH nanoparticles effectively promote glutathione (GSH) consumption in tumor cells, which is conducive to accumulating reactive oxygen species (ROS). In brief, Ce6/ [email protected] nanoparticles realize the targeted delivery of Ce6 and mediate synergistic PDT/CDT against tumors, broadening the biomedical application of nanomaterials.
研究领域:
纳米技术
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癌症治疗
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生物医学工程
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药学
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2023
·
IF 9.9
Zhichun Si,Mengxi Pei,Yishui Liu,Bo Li,Feiyu Kang
Photocatalytic degradation is considered as the most energy-efficient, environmentally benign, and effective method for treating low fraction organic contaminants. However, the photocatalysts still suffer from low utilization efficiency of visible-light and severe carrier recombination. Heterojunctions can resolve these two main problems in some extent but still be restrained by the low quality of hetero-interface. In this study, homojunction was constructed of β-FeOOH quantum dots and nanorods with the same lattice by a two-step precipitation method, to avoid the heterointerface with too many defects and possess good charge separation as a consequence. The catalysts were characterized by activity test, electron spin resonance, Mott-Schottky plots, photocurrent density tests and open-circuit potential measurements, etc. The results revealed that a strong internal electric fields (IEFs) was created at the interface of catalyst. Beneficently, the electron rearrangement leads to a more rational distribution of oxygen vacancies in the catalyst, resulting in more efficient dissociation of oxygen molecules and formation of active radicals, thus facilitating the efficient degradation of toluene. This study proposes a novel strategy to boosting the photocatalytic activity of low dimensional semiconductors via forming homojunction interfaces to improve their charge transfer.
研究领域:
环境科学
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材料科学
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化学工程
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产品关联
DOI
PubMed
高影响因子
APPLIED SURFACE SCIENCE
·
2023
·
IF 6.7
Wei Chen,Tao Zhou,Diankuan Gu,Ya He,Ziheng Zhang,Jiangyang Tian,Fan Fu
The photo-Fenton reaction has been widely applied in the decontamination of organic pollutants and has shown great potential in environmental remediation. The development of an appropriate catalyst with high activity and stability is essential for its success. Therefore, a composite catalyst was synthesized by in-situ mineralization of β-FeOOH nanorods on carbonized cellulose fabric (CCF) coated with polydopamine (PDA), which was denoted as β-FeOOH/PDA/CCF. The β-FeOOH/PDA/CCF catalyst with more than 77% degradation efficiency towards various contaminants and exhibited excellent chemical stability after six consecutive adsorption/degradation cycles. Radical scavenger experiments and electron paramagnetic resonance spectroscopy confirmed the presence of hydroxyl radicals (∙OH) that play a crucial role in the photo-Fenton degradation process. In addition, the degradation mechanism and pathway of MB was inferred. This work provides new perspectives on developing catalysts that demonstrate high stability and accelerated electron transfer, which can enhance the application of the photo-Fenton process in practical wastewater purification.
研究领域:
环境科学
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材料科学
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化学工程
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产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
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2019
·
IF 8.456
Liyun Zhang,Yi He,Lan Ma,Jingyu Chen,Yi Fan,Shihong Zhang,Heng shi,Zhenyu Li,Pingya Luo
Filtration membranes, with good antifouling performance and robust solvent resistance (e.g., organic solvents or highly acidic/alkaline/saline solvents), that can effectively purify complex polluted water systems are especially demanded in practice but present a challenge to be conquered. Herein, a simple method has been demonstrated to address the obstacles, applying the stabilized polyacrylonitrile (SPAN) nanofiber/β-FeOOH nanorod composite membrane as a model. In this work, simply stabilizing PAN nanofibers in air can achieve robust solvent resistance against organic solvents and strong inorganic acidic/alkaline/saline solutions. Hydrophilic β-FeOOH nanorods were anchored onto SPAN nanofibers of our electrospun membrane and achieve superhydrophilicity (0°)/underwater superoleophobicity (>155°) for various oils. More importantly, the SPAN/β-FeOOH nanofibrous membrane exhibits robust mechanical strength (274 MPa of Young’s modulus), excellent chemical stability, fast separation flux (2532–10146 L m–2 h–1), and satisfying removal ratio (>98.2%) against insoluble oils and soluble cationic dyes. In addition, good photocatalytic activity against organic pollutants provides our membranes with excellent flux restorability and a long-term use capacity. These outstanding performances endow our membrane with a great potential application in purifying polluted aquatic systems in worldly harsh conditions.
研究领域:
材料科学
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环境工程
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纳米技术
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水处理
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DOI
PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2022
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IF 9.136
Yuqi Wang,Yi He,Jing Yu,Liyun Zhang,Shuangshuang Li,Hongjie Li
The superhydrophilic/underwater superoleophobic filtration membranes with robust anti-oil-fouling performance have aroused extensive research enthusiasm for oily wastewater treatment. However, it is inevitable that this kind of anti-fouling membrane will be contaminated when facing high-viscosity crude oil. In this work, green tannic acid (TA) was introduced in sodium alginate (SA) nanofibrous membrane (NFM) to form stable TA-Fe(iii) complexes via coordination reaction. Then, a layer of rough β-FeOOH nanoparticles was uniformly constructed on the surface of the nanofiber via in situ mineralization. The obtained SA/TA/β-FeOOH NFM displayed outstanding underwater superoleophobic and anti-crude oil-fouling performance. Moreover, the SA/TA/β-FeOOH NFM exhibited high separation efficiency (99.64%) and flux (1899 ± 251 L m −2 h −1 ) for crude oil-in-water emulsion. In addition, SA/TA/β-FeOOH NFM with fascinating photo-Fenton self-cleaning performance can degrade pollutants adsorbed on the membrane surface. These surprising advantages endow our SA/TA/β-FeOOH NFM have promising prospects in complex oily wastewater treatment.
研究领域:
环境科学
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材料科学
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产品关联
DOI
高影响因子
Journal of Materials Chemistry A
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2019
·Vol. 7
·期 14
·8491-8502
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IF 10.733
Atian Xie,Jiuyun Cui,Jin Yang,Yangyang Chen,Jiangdong Dai,Jihui Lang,Chunxiang Li,Yongsheng Yan
Superhydrophilic/underwater superoleophobic membranes have aroused much research enthusiasm because of their good anti-fouling ability for the treatment of oil-contaminated water. However, such anti-fouling membranes inevitably suffer from fouling during long-term use. Thus, anti-fouling membranes with excellent self-cleaning performance, fast and superior flux recovery are still greatly required. Herein, the green tannic acid (TA)-Fe(III) complex is first assembled onto the polyvinylidene fluoride membrane (PVDF) surface and followed by the in situ mineralization of β-FeOOH to fabricate the PVDF/TA/β-FeOOH membrane for efficient oil/water emulsion separation. The resultant membrane exhibits superhydrophilicity and underwater superoleophobicity with underwater OCA of above 155° for various oils. Importantly, the as-prepared membrane shows fast (within 10 min) and excellent flux recovery (over 98%) attributed to the robust photo-Fenton catalytic activity of β-FeOOH. Moreover, the membrane also displays high separation efficiency (>99.1%) and high flux (1426.8–2106.2 L m−2 h−1 bar−1) for a series of oil/water emulsions. This study highlights a new direction in the development of photo-Fenton self-cleaning membranes with fast and robust flux recovery for efficient oil/water emulsion separation.
研究领域:
材料科学
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环境工程
✓ 已验证
DOI
高影响因子
LANGMUIR
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2022
·
IF 4.331
Shang-Jin Yang,Zhi-Yuan Xu,Ling-Yun Zou,Jiong-Chi Yu,Jian Ji,Zhi-Kang Xu
The advanced oxidation process of the photo-Fenton reaction can produce hydroxyl radicals with extremely strong oxidizing properties for the efficient and green degradation of various chemical and microbial pollutants. Herein, we report an approach to fabricating heterogeneous Fenton catalysts of β-FeOOH nanorods on porous substrates triggered by mussel-inspired coatings of levodopa (3,4-dihydroxy-phenyl-l-alanine, l-DOPA) and polyethylenimine (PEI) for efficient photocatalytic dyes’ degradation and sterilization. The l-DOPA-based coatings not only promote the formation and immobilization of β-FeOOH nanorods on the porous substrates by strong coordination between catechol/carboxyl groups and Fe3+ but also improve the energy band structure of the Fenton catalysts through a valence band blue shift and band gap narrowing. The photo-Fenton catalysts prepared by the l-DOPA-based coatings exhibit high electron transport efficiency and improved utilization of sunlight. Only 2 h of mineralization is needed to fabricate these catalysts with excellent photocatalytic efficiency, in which the degradation efficiency of methylene blue can reach 99% within 30 min, whereas the sterilization efficiency of E. coli/S. aureus can reach 93%/94% within 20 min of the photo-Fenton reaction. Additionally, the prepared catalysts reveal a high photodegradation performance for various dyes including methylene blue, methyl blue, methyl orange, direct yellow, and rhodamine B. Furthermore, the catalysts retain high dye degradation efficiencies of above 90% after five photodegradation cycles, indicating cycling performance and good stability.
研究领域:
环境科学
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材料科学
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化学工程
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产品关联
DOI
PubMed
高影响因子
ACS Applied Nano Materials
·
2025
·
IF 5.5
Jiangyan Lu,Xueyan Wu,Zhuoran Yi,Kun Xiang,Sakil Mahmud,Zong Lu,Dahao Lian,Weiting Wang,Yimeng Feng,Zhu Wang,Xuexia Huang,Zhu Xiong
To address the challenge of efficient antimony [Sb(III)] removal from wastewater, we developed a hierarchically structured β-FeOOH@PDA/PEI-PTFE composite membrane that combines synergistic adsorption and photocatalytic functions. A conformal PDA/PEI layer was deposited on PTFE membranes to promote Fe3+ chelation and support the in situ growth of vertically aligned β-FeOOH nanorods. Multiscale characterization (SEM, EDS, ATR-FTIR, XRD, and XPS) confirmed uniform β-FeOOH distribution, covalent Fe–O–C bonding, and the presence of functional groups (−NH2, Fe–OH), which are critical for Sb(III) uptake. The membrane demonstrated excellent adsorption performance, achieving 95% removal at pH 7, with a capacity of 420.01 mg/m2 and 5 mg/L Sb(III). Adsorption kinetics and isotherms followed pseudo-second-order and Freundlich models, indicating heterogeneous multilayer chemisorption. The presence of competitive ions (e.g., HPO42–, CO32–) had minimal impact, highlighting the membrane’s selectivity. Under UV irradiation, photocatalytic oxidation further increased Sb(III) removal to 98% within 60 min through •OH/h+-mediated oxidation to Sb(V), supported by Fe3+/Fe2+ redox cycling, as confirmed by XPS and ESR analyses. The PDA/PEI matrix enhanced structural stability via π–π conjugation and hydrogen bonding, allowing the membrane to retain 76.3% of its efficiency after five regeneration cycles, despite minor photocorrosion and pore blockage. This study reveals a dual-functional mechanism involving electrostatic attraction, complexation, and photocatalysis, offering a sustainable and scalable strategy for antimony remediation in complex water environments.
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产品关联
DOI
高影响因子
SCIENCE OF THE TOTAL ENVIRONMENT
·
2019
·
IF 5.589
Cong Lyu,Dan He,Zishen Mou,Xuejiao Yang
In this paper, manganese dioxide (MnO 2 ) loaded iron oxyhydroxide (β-FeOOH) was synthesized aiming to improve the catalytic performance of β-FeOOH as peroxymonosulfate activator. The β-FeOOH@MnO 2 /PMS system exhibited excellent performance and its reaction rate constant of Acid Orange 7 (AO7) degradation (0.0533 min −1 ) was approximately 2.3 times as that in β-FeOOH/PMS system (0.0232 min −1 ). β-FeOOH@MnO 2 possessed superior properties as catalyst than β-FeOOH, owing to the higher surface hydroxyl density with higher specific surface area , redox ability and electronic transmission rate. Moreover, on the basis of the analysis from FTIR and XPS , it was found that the redox reaction of Fe 3+ /Fe 2+ and Mn 4+ /Mn 3+ synergistically activated PMS as well as the generation of FeOH + and MnOH 2+ accelerated activating PMS in the β-FeOOH@MnO 2 /PMS system. Thus, MnO 2 and FeOOH synergistically activated PMS to reactive oxygen species (ROS). And 1 O 2 , O 2 − and OH were identified as predominant ROS in the β-FeOOH@MnO 2 /PMS system on the basis of the result from quenching experiments and ESR . As a result, TOC removal rate was increased up to 22.62%. Additionally, β-FeOOH@MnO 2 exhibited good stability with low iron dissolution and manganese dissolution. Generally, this study proposed that β-FeOOH@MnO 2 was an efficient and environmental catalyst as PMS activator for organic pollutant degradation in water.
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DOI
高影响因子
Carbon Resources Conversion
·
2026
·
IF 10.9
Huiyang Bian,Tingting Xi,Yufan Feng,Jun Chen,Wenhao Wang,Zixuan Zhao,Sha Wang,Weiqi Wei,Xuelian Zhou
Improving the dispersibility and recoverability of powdered catalysts is essential for developing efficient and cost-effective photocatalytic systems. Herein, silver-loaded β -FeOOH/quaternized cellulose nanofibrils composite hydrogel, denoted as Ag@ β -FeOOH/QCNF, was successfully prepared via an in-situ synthesis approach combined with photodeposition for environmental remediation. The composite hydrogel consisted of a three‑dimensional porous network, with β -FeOOH photocatalysts and Ag nanoparticles uniformly distributed. The composite hydrogel not only exhibited adsorption capacity toward organic pollutant but also established multidimensional electron‑transport pathways that facilitated the migration of photo-generated charge carrier, thereby significantly enhancing light-harvesting efficiency. The synergistic effect between adsorption and photocatalysis enabled hydrogel to achieve nearly complete degradation of tetracycline (100%) within 30 min under simulated visible light, while maintaining a removal efficiency above 94% over five consecutive cycles, demonstrating outstanding stability and reusability. Free radical scavenging experiments demonstrated that ·OH and h + were the primary reactive species responsible for pollutant degradation. Overall, this study presents a straightforward approach to construct 3D network-structured hydrogel materials with efficient photocatalytic performance, which holds significant potential for applications in water purification.
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DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2016
·
IF 3.15
Qiang Zhao,Dandan Li,Guofeng Gao,Wen Yuan,Genyan Hao,Jinping Li
We describe the preparation of three partially ordered iron-based catalyst films (Fe-OAc, Fe-Pro, Fe-But) with nanoporous structure by electrodeposition from organate electrolytes containing Fe 2+ . The anions of the organic acids assisted the partial ordering of the nanostructured Fe(III) catalysts for water oxidation. A model involving an electrical double layer is invoked to explain the role of the organate electrolyte system in their formation. Analytical results have revealed the main component of the iron-based films to be a β-FeOOH structure. The Fe-But catalyst catalyzed water oxidation in 0.1 m potassium carbonate solution with an average activity of 1.48 mA cm −2 and an overpotential of 433 mV.
研究领域:
无机化学
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材料科学
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电化学
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催化化学
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能源材料
·
纳米科技
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）