JOURNAL OF HAZARDOUS MATERIALS
·
2021
·
IF 10.588
Wenjuan Wang,Yanfang Huang,Guihong Han,Bingbing Liu,Shengpeng Su,Yizhuang Wang,Yubin Xue
Environmentally hazardous P(V), Mo(VI) and W(VI) generated oxyanions exist widely in the waste liquid of nonferrous hydrometallurgy . In this work, Fe-MOF material was simply prepared via solvothermal synthesis and then used as an adsorbent to remove P(V), Mo(VI) and W(VI) oxyanions from hydrometallurgical waste liquid . Several important parameters, including solution pH, oxyanion concentration, contact time, adsorbent amount, temperature and coexistent heavy metal ions , were systematically investigated. The results demonstrate that adsorption process was almost pH-independent over a broad range of pH 3.0–10.0. The adsorption efficiency was strongly associated with the chemical species of oxyanions. The higher polymerisation degree of oxyanions was more favourable for removal efficiency. Additionally, the maximum removal efficiencies for P(V), Mo(VI) and W(VI) oxyanions under optimum conditions were approximately 100%. Furthermore, the adsorption kinetics and isotherms of oxyanions on the adsorbent separately belonged to the pseudo-second-order and Langmuir isotherm models. XPS analysis revealed that inner-sphere complexation played a dominant role in the adsorption removal process. Fe-MOFs with pH-independent properties, abundant binding sites and high stability are prospective adsorbents for treating waste liquids in the hydrometallurgical industry.
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
PubMed
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2023
·
IF 9.5
Yan Wan,Lan Ma,Teng Wang,Guilan Zhang,Xinyan Li,Junjie Liao,Minghang Jiang,Liyun Zhang
Developing the membrane with splendid anti-fouling ability is urgently desired for the separation of high-viscosity crude oils emulsions. Herein, a novel GO-based membrane with anti-crude oil fouling and persulfate activation self-cleaning properties was fabricated by introducing g-C 3 N 4 /NH 2 -MIL-88B(Fe) (g-C 3 N 4 /NMB) heterojunction into graphene oxide (GO) sheets via a sample self-assembling process. Combing with micro-nano structures and hydrophilic properties of g-C 3 N 4 /NMB heterojunction, GO@g-C 3 N 4 /NMB membrane exhibited resplendently selective wettability and anti-crude oil adhesion performance. Based on this, the resultant membrane effectively realized the separation to different low-viscosity oily wastewaters (all rejections >98%). Facing high-viscidity crude oil emulsions, the permeate flux could reach 1611 ± 63 L m -2 h -1 bar -1 with 99.21% of reject rate, which increased almost 80 times than GO membranes. Moreover, profiting from the distinguished photocatalytic activity of g-C 3 N 4 /NMB and electron transport capacity of GO nanosheet , the catalytic degradation rate of GO@g-C 3 N 4 /NMB membrane was enhanced over 5 times compared to GO membrane under visible light radiation, reaching 0.1513 min -1 for MB under 0.6 mM peroxydisulfate (PDS). Hence, GO@g-C 3 N 4 /NMB membrane could reveal continuous purification of organic wastewater through the synergistic effect of filtration and photocatalysis . Similarly, the crude oil-fouled membrane also accomplished regeneration after 30 min of light irradiation and the R ir of GO@g-C 3 N 4 /NMB-3 membrane decreased to only 3.7% by persulfate activation self-cleaning strategy. Therefore, this work provided a beneficial avenue for developing sustainable, renewable separation membranes of crude oil emulsions.
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
POLYMERS FOR ADVANCED TECHNOLOGIES
·
2023
·
IF 3.4
Xiaodong Jin,Xinyi Wu,Qinyong Liu,Shibing Sun,Suping Cui,Sheng Zhang,Chen Chen
In this work, a metal organic framework (Fe-MOF) with the effect of absorbing toxic gases and good compatibility was synthesized by chelating a novel organic ligand contained carbonization groups (reacted by tris(hydroxymethyl) aminomethane and 1,4-piperazine dialdehyde) with iron salt. Then, it was used as the synergist to improve the efficiency of intumescent flame retardant (IFR) within polystyrene (PS) substrate. With the addition of 20% IFR and 2% Fe-MOF, the obtained PS composites exhibited a limiting oxygen index (LOI) value of 28.3% and a UL rating of V-0. Moreover, the peak heat release rate (pHRR), total heat release (THR), and total smoke production (TSP) of PS composites were decreased by 77.6%, 35.2%, and 33.7%, respectively. According to the mechanism analysis, it was found that Fe-MOF mainly acted in the condensed phase, contributing to the existence of dense char residues with the presence of IFR system. In addition, the good compatibility of organic ligand in Fe-MOF with PS substrate could partially alleviate the deterioration of mechanical properties due to the addition of IFR. For PS-20%IFR/2%Fe-MOF, the impact strength was improved from 1.7 kJ/m 2 (PS-22%IFR) to 2.2 kJ/m 2 , the tensile strength was also increased from 21.3 MPa (PS-22%IFR) to 22.4 MPa.
研究领域:
材料科学
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高分子化学
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消防安全工程
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产品关联
DOI
高影响因子
Journal of Environmental Chemical Engineering
·
2022
·
IF 7.968
De-Yu Gao,Zan Liu,Zhi-Lin Cheng
In this work, we successfully prepared the 2D Ni-Fe MOF-HNTs composites by in-situ hydrothermal growth, followed by enabling it to full into PVA hydrogels, thereupon fabricating the oil/water separation 2D Ni-Fe MOF-HNTs/PVA-decorated stainless steel mesh. The structures and mechanical properties of the composites were identified by a series of characterizations. The results showed that the 2D Ni-Fe MOF nanosheets were gown on the outer surface of HNTs to form the exclusive composite structure and the 2D Ni-Fe MOF-HNTs/PVA composite membrane possessed a more compact pore structure, which exhibited the outstanding mechanical performance and the fatigue resistance ability. The surface property characterizations demonstrated that the 2D Ni-Fe-MOF-HNTs/PVA composite membrane had the superhydrophilic and underwater superoleophobic features. Ultimately, the results of the water flux and separation efficiency on 2D Ni-Fe-MOF-HNTs/PVA composite membrane for oil-water separation and emulsion separation corroborated that it was a promising high-performance separation composite membrane.
研究领域:
材料科学
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环境工程
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产品关联
DOI
高影响因子
Emergent Materials
·
2025
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IF 4.1
Shi Zhengzheng,Li Jia,Pan Yupeng,Li Xuewei,Zhuang Zile,Li Yihan,Zhang Zheng,Wang Zirui,Luo Qizhi,Chen Xuncai
The Fenton-like reaction has always been hampered by limitations related to its narrow pH range and poor stability. In this study, we successfully developed a novel catalyst composed of Prussian blue (PB) nanoparticles anchored onto carbon-defective g-C 3 N 4 (CD-C 3 N 4 ) nanosheets with a porous structure. Under visible light irradiation for 120 min, the removal efficiencies of tetracycline can achieve remarkably high removal rates as 93.3%. Significantly, this catalyst attains exceptional long-term stability enabling up to 20 cycles, while consistently maintaining a degradation efficiency exceeding 99%. Furthermore, this system exhibits a wide pH tolerance ranging from 3 to 9. Efficient charge separation and the introduction of carbon defects on the g-C 3 N 4 nanosheets contribute to the robust Fe 3+ /Fe 2+ cycles in PB, which support prolonged multiple recycles. ESR and quenching tests indicated that •O 2 − species play a significant role in catalytic degradation, with •OH and h + also being involved in the photo-Fenton reaction. Finally, we proposed potential photo-Fenton degradation pathways for tetracycline(TC) and conducted a comprehensive investigation into the toxicity changes of TC degradation through full-scale zebrafish toxicology assays. This work presents an innovative approach to construct highly stable Fenton-like catalysts through structural defect engineering combined with Fe-Metal organic frameworks(MOFs) loading strategies.
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
MICROCHIMICA ACTA
·
2017
·Vol. 184
·期 4
·1029-1036
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IF 4.58
Zhou Qingxiang,Lei Man,Li Jing,Liu Yongli,Zhao Kuifu,Zhao Danchen
Metal organic frameworks of type MOF-5 exhibit good adsorption capacity for many organic compounds. The authors have used nanoscale silica-coated zerovalent iron and MOF-5 to prepare, by co-precipitation, a novel magnetic nanomaterial of type Fe@MOF-5. Its morphology and structure were characterized by transmission electron microscopy and X-ray diffraction. The nanomaterial is shown to be well suited for magnetic solid phase extraction for five kinds of N- and S-containing polycyclic aromatic hydrocarbons prior to quantitation by HPLC. The limits of detection are in the 25 to 33 ng⋅L −1 concentration range. Four real water samples were used to validate the method, and the recoveries of spiked samples with concentrations of 5 and 10 ppb were found to be in the range between 92.6 and 97.3% ( n = 3). The Fe@MOF-5 sorbent obviously has excellent adsorption capability for such compounds, can be fairly easily synthesized, displays sensitivity, simplicity, ease of operation, and can be prepared at low costs. In our perception, it has a large potential in terms of monitoring such environmental pollutants.
A metal organic framework of type Fe@MOF-5 is found to exhibit good adsorption capacity for N- and S-containing polycyclic aromatic hydrocarbons. A sensitive magnetic solid phase extraction method with Fe@MOF-5 was developed for the determination of N- and S-containing polycyclic aromatic hydrocarbons from the water samples.
研究领域:
环境科学
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分析化学
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产品关联
DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
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2019
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IF 6.393
Zhen Song,Yang Li,He Teng,Caifeng Ding,Guiyun Xu,Xiliang Luo
Herein, an antifouling and sensitive electrochemical enzyme sensing platform was developed based on a self-designed zwitterionic peptide and sacrificial iron metal-organic framework (Fe-MOF). The designed zwitterionic peptide was hydrophilic and neutral in charge, and it was used to improve the antifouling capability of the sensing system. Fe-MOF with amine groups was loaded with Au nanoparticles and further functionalized with a specific DNA sequence, and it was used as a sacrificial label. The sensing target, T4 polynucleotide kinase (PNK), can catalyze the 5′-hydroxyl termini of a unique hairpin DNA to phosphate group, and the hairpin DNA can then be hydrolyzed by lambda exonuclease (λ-Exo) and release a single nucleotide. In the presence of the released DNA sequence, a sandwich-type hybridization reaction was triggered, and the DNA linked Fe-MOF was selectively attached to the electrode surface, which can react with K 4 Fe(CN) 6 to form the electroactive Prussian blue and generate significantly enlarged current response. Based on the antifouling peptide and the sacrificial Fe-MOF, the biosensor exhibited satisfying analytical performance for the detection of T4 PNK, with a wide linear range from 1.0×10 −3 to 10 U·mL -1 and a low detection limit of 3.5×10 -4 U·mL -1 . Moreover, the biosensor was capable of effectively eliminating nonspecific protein adsorption and assaying target in human serum, indicating its promising potential for practical application.
研究领域:
生物化学
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分析化学
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生物传感器
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分子诊断
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产品关联
DOI
高影响因子
MICROCHEMICAL JOURNAL
·
2025
·
IF 5.1
Xiaoyu Yang,Shanshan Li,Yang Yang,Xurong Huang,Linhui Li,Wenjin Yang,Zhiqing Zhang,Guanghui Shen,Xiaoyan Hou,Qiang Cui,Anjun Chen
In this study, we developed two novel electrochemical sensors for the detection of hydroxy-α-sanshool (HαSS) and hydroxy-(α+β)-sanshool (H(α+β)SS), based on the molecularly imprinted AuNPs/Fe-MOF polymer composites films. The imprinted films were facilely constructed via in situ electrodeposition of gold nanoparticles (AuNPs) on the Fe-MOF coatings, followed by a simple electrochemical polymerization process. The AuNPs/Fe-MOF composites not only enhanced the electroactive surface areas but also improved the conductivity and the stability of the polymerized films. Under optimal conditions, the HαSS sensor demonstrated excellent performance, with a detection range of 1–120 μM and a detection limit of 0.206 μM. The sensor for H(α+β)SS, reported for the first time, exhibited a broad linear range of 0.11–132 μM and accurately detected total HαSS and HβSS, achieving a detection limit of 0.072 μM. Both sensors performed effectively in the detection of HαSS or H(α+β)SS in Zanthoxylum bungeanum Maxim. and its products. The two developed sensors significantly outperform other previously reported sanshool sensors and show previously potential for applications in the Zanthoxylum industry.
研究领域:
食品科学
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分析化学
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材料科学
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产品关联
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2025
·
IF 2.8
Jingguang Wang,Yutao Lin,Tao Wang,Zhenze Xie,Wenxin Guo,Chang Du
Cancer treatment techniques often struggle to simultaneously address the issues of significant impact from cancer heterogeneity, poor resistance to drugs, and non-selective drug toxicity. Therefore, cancer treatment strategies based on nanoplatforms with multiple responsive properties have attracted wide attention due to their broad applicability and minimal side effects on normal cells. Herein, we constructed a nano iron-based metal–organic framework loading Pt and coated with polydopamine (Fe-MOF-NH 2 @Pt@PDA) using the solvothermal method for multimodal cancer therapy. The Pt and Fe could leverage the unique weak acidity and overexpression of hydrogen peroxide in the tumor cell to generate reactive oxygen species (ROS) for chemodynamic therapy (CDT). Additionally, Pt and Fe gave its peroxidase-like activity to produce oxygen, improving the hypoxic environment in the tumor microenvironment. Due to Pt, Fe-MOF-NH 2 @Pt@PDA achieved excellent sonodynamic therapy (SDT) under ultrasound (US) stimulation. Under US, more ROS were generated, enhancing the anticancer effect of CDT. Moreover, Fe-MOF-NH 2 @Pt@PDA produced an excellent photothermal effect under 808 nm near-infrared (NIR) irradiation for photothermal therapy (PTT). Furthermore, Fe-MOF-NH 2 @Pt@PDA exhibited good biocompatibility. Taken together, the nano Fe-MOF-NH 2 @Pt@PDA with synergistic CDT, SDT, and PTT combined treatment was a promising biomaterial for non-invasive clinical cancer therapy.
研究领域:
纳米医学
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肿瘤学
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材料科学
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生物医学工程
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诊疗学
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生物化学
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药学
✓ 已验证
产品关联
DOI
高影响因子
INORGANIC CHEMISTRY COMMUNICATIONS
·
2023
·
IF 3.8
Qiulin Li,Xiang Li,Ke Zhang,Jiaqi He,Yongbing Lou,Jinxi Chen
There is an urgent need to design effective and affordable noble metal-free oxygen evolution electrocatalysts for the realization of hydrogen production technology through overall water splitting. In this work, we synthesized CoMoO 4 /Fe-MOF composite catalysts on nickel foam by solvothermal method and explored them as electrodes towards oxygen evolution reaction. At 10 mA cm −2 , CoMoO 4 /Fe-MOF demonstrated a small overpotential of 238 mV, with a relatively small Tafel slope of 49.22 mV dec -1 and exhibited excellent stability after 30 h of testing. The enhanced OER activity and good durability of CoMoO 4 /Fe-MOF could be attributed to the self-supported growth of Fe-MOF nanosheets as well as the tight binding to the rod-like CoMoO 4 . The coupling of CoMoO 4 with Fe-MOF established a rich boundary, thus improving conductivity, increasing specific surface area and exposing more active sites. These results suggested that the combination of MOFs with binary transition metal oxides provided an effective route to develop robust and efficient electrocatalysts.
研究领域:
材料科学
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电化学
·
催化
·
能源材料
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL PAPERS
·
2023
·Vol. 77
·期 12
·7577-7587
·
IF 2.2
He Jintao,Zhang Baozhong,Tian Panpan,Li Ying,Liu Xiaolong,Ma Xinyue,Lin Min,Zhu Huina,Chen Hanyu,Li Liping,He Baoshan
Cadmium (Cd), a typical heavy metal not essential for the human body, can cause harm to the liver and kidneys upon exposure. Hence, rapid cadmium detection in the environment is of utmost importance. This research presents an effective approach for detecting divalent cadmium ions (Cd 2+ ) using a sensitive dual hairpin (HP) electrochemical aptasensor. The aptasensor incorporates AuPd/Fe-MOF as signal labels and Au/Cu 2 O as the substrate material, and the rapid detection of divalent cadmium ions (Cd 2+ ) was based on catalytic hairpin self-assembly (CHA), as the recognition strategy. Au/Cu 2 O increased the specific surface area of the electrode and provided abundant sites for capturing the complementary deoxyribonucleic acid (CDNA) probe. The electrochemical signal is then amplified through synergistic catalytic hydrogen peroxide with AuPd/Fe-MOF, thereby enhancing the aptasensor's sensitivity. Moreover, the dual HP design effectively reduces the likelihood of non-specific capture and minimizes false positives. In this study, various analytical techniques were utilized to characterize the material and evaluate the aptasensor's performance. The morphological characteristics of the material were observed using scanning electron microscopy (SEM). Energy-dispersive spectroscopy (EDS) and X-ray diffraction (XRD) were employed to analyze the elemental composition and distribution of the material, respectively. The electrochemical behavior of the sensor was studied using cyclic voltammetry (CV), while electrochemical impedance spectroscopy (EIS) helped understand the aptasensor's assembly process. Furthermore, the aptasensor's performance was assessed using differential pulse voltammetry (DPV). Under the optimized experimental conditions, the constructed sensor demonstrated effective detection of Cd 2+ in the concentration range of 10 –4 –10 µM, with a remarkably low detection limit of 2.27 × 10 –5 µM. The feasibility of the sensor was validated by successfully detecting Cd 2+ in real water samples. .
研究领域:
分析化学
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环境科学
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材料科学
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电化学
✓ 已验证
产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2021
·
IF 6.707
Zhaode Mu,Jiangman Tian,Jie Wang,Jing Zhou,Lijuan Bai
Sensitive detection of endotoxin is especially critical in the fields of food security, therapeutics and medical science. In this work, a new sandwich-type electrochemical aptasensor was designed for ultrasensitive detection of endotoxin. For the first time, nitrogen-doped carbon nanotubes (N-CNTs) was functionalized with polydiallyldimethylammonium chloride (PDDA), forming P-N-CNTs nanocomposite. Then, Fe-based metal–organic framework (Fe-MOF) and silver nanoparticles (AgNPs) was decorated with P-N-CNTs to form the MOF/Ag-P-N-CNTs nanohybrid, which was employed as an enhanced signal indicator, not only exhibited outstanding electrochemical activity, but also could directly label with thiol-modified signal probes (TSPs) to form tracer label. Additionally, the avidin–biotin recognition system was introduced to increase the amount of biotin-modified capture probes (BCPs). Differential pulse voltammetry (DPV) was utilized to investigate the detection performances of the proposed aptasensor, which suggested a wide linear range from 1 fg/mL to 100 ng/mL with a low detection limit of 0.55 fg/mL toward endotoxin.
研究领域:
分析化学
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生物传感器
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纳米技术
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医学科学
·
食品安全
✓ 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）