COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2018
·
IF 2.829
Xiaoxia Ye,Yiwen Cui,Le Ke,Kaiyang Gao,Xin Huang,Bi Shi
A robust and 3D superhydrophobic composite sponge was facilely prepared by stable coating of multiple walled carbon nanotubes (MWCNTs) onto melamine sponge (MS) using polyphenol-Fe 3+ complexes as the low-cost and efficient adhesives. The as-prepared superhydrophobic composite sponges featured ultra-low density, large porosity, high robustness and elasticity, as well as flame resistance. The loading of MWCNTs influenced the superhydrophobicity of sponge, and the optimized loading of MWCNTs was determined to be 3.0%, with a water contact angle of 159.8°. The 3D superhydrophobic sponge exhibited high absorption capacity to a wide range of oils and organic solvents , up to 38–127 times of its own weight dependent on the variety of oil and organic solvent. After 10 recycles of repeative absorption, the loss of absorption capacity was as low as 0.9% per cycle. The 3D superhydrophobic sponge was also applied for continuous separation of spilled oil from water with a separation efficiency of 97%. Our approach could also be extended for coating other carbon materials on MS, including graphene and activated carbon. The resultant sponges were still superhydrophobic and exhibited high separation ability for immiscible oil/water mixture.
研究领域:
材料科学
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
MICROCHEMICAL JOURNAL
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2025
·
IF 5.1
Qing Li,Yingqiang Fu
Fipronil (FIP) and acephate (ACE) are highly toxic insecticides that pollute the environment and pose a health hazard, potentially being carcinogenic or teratogenic. Excess Fe 3+ can trigger oxidative stress and lead to organ damage. Conventional fluorescent probes can only be used for single detection, and the development of multi-target simultaneous detection methods is imminent. In this work, brilliant cresyl blue modified carbon quantum dots (B-CQDs) were synthesized using a simple one-step hydrothermal method. It was found that B-CQDs can sequentially detect multiple substances under certain conditions. Firstly, the fluorescence of B-CQD increases with the concentration of insecticide FIP, and decreases with the addition of Fe 3+ . After activation treatment with EDTA and Zn 2+ solutions, the fluorescence intensity of the system increases with the concentration of insecticide ACE. A fluorescent probe was established based on the above experimental phenomena to achieve sequence detection of FIP, Fe 3+ , and ACE, with the lower limits of detection (LODs) being 0.078 μM, 0.013 μM, and 0.055 μM, respectively. Therefore, the new method of sequence detection for multiple pesticide residues developed in this study shows great potential for application in environmental pesticide residue detection.
研究领域:
环境科学
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分析化学
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纳米技术
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毒理学
✓ 已验证
DOI
高影响因子
INDUSTRIAL CROPS AND PRODUCTS
·
2025
·
IF 6.2
Liping Rong,Xiaohui Fan,Gang Wang,Huanhuan Li,Dayong Zhang,Danni Luo,Sheng Li,Zhiguo Li
Improving the bond strength of wood emulsion adhesives is an ongoing challenge for the wood-processing industry. In this study, PVAc/PS core-shell emulsion particles are functionalized by forming coordination complexes between natural biomaterial tannic acid (TA) and Fe 3+ . The functionalized emulsion particles are assembled on the surface of the core template SiO 2 to form a “superstructure” through hydrogen bonding between the phenolic hydroxyl groups in the TA and the hydroxyl groups on the surface of SiO 2 , which can enhance the cohesive strength of the emulsion adhesive layer, thereby increasing the peel strength of wood adhesives. The results indicated that the functionalized emulsion particles were most effectively assembled on core template SiO 2 particles when the ratio of TA to Fe 3+ was 1:1 and the encapsulation rate of the assembled SiO 2 particles was 150 %. The glass transition temperatures (Tg1 and Tg2), storage modulus, tensile strength, and hardness of the assembled PVAc/PS emulsion film were measured by DSC, DMA, tensile testing machine, and durometer. These properties increased by 11.6 %, 5.3 %, 14.9 %, 127.6 %, and 46.3 %, respectively, compared to those of the PVAc/PS emulsion film. Further, the shear strength of the assembled PVAc/PS emulsion for bonding wood blocks and the peel strength for bonding thin veneers increased by 33.8 and 35.7 %, respectively, compared to those of the PVAc/PS emulsion. This study confirmed that using a modular assembly to improve PVAc/PS emulsion bonding properties can help formulate high-performance waterborne emulsion adhesives with promising applications in the field of thin-wood veneer bonding. This strategy provides an effective method to design and build environmentally friendly, low-cost, and high-performance water-based emulsion adhesives.
研究领域:
材料科学
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林业工程
✓ 已验证
产品关联
DOI
高影响因子
INORGANIC CHEMISTRY
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2025
·
IF 4.7
Xuewan Lin,Jiyou Zhong
Near-infrared (NIR) phosphors are key components for NIR phosphor-converted light-emitting diodes (pc-LEDs), which serve as compact light sources for a range of smart spectroscopic applications. However, developing an efficient, low-cost, and broadband NIR phosphor with a long-wavelength emission peak beyond 900 nm remains a considerable challenge. Guided by design principles summarized here, we selected the double-perovskite Ca2MgTeO6 as a host for Fe3+ doping. Systematic analysis of the crystal and electronic structures reveals the crystal’s strong potential for generating efficient NIR luminescence. Experimental results confirm that the optimally doped sample exhibits NIR emission centered at 944 nm and achieves a remarkably high photoluminescence quantum yield (PLQY) of 87.8% under 310 nm excitation. Finally, the developed material was successfully applied in nondestructive testing, night vision, and information encryption, realizing multifunctional applications.
研究领域:
材料科学
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光学材料
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固态照明
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发光学
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光子学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Materials Chemistry C
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2025
·
IF 5.1
Ruipeng Shen,Min Li,Shuo Wang,Yu-Mo Zhang,Sean Xiao-An Zhang
Based on the dynamic coordination and dissociation of a leuco dye and Fe2+/Fe3+, we constructed an electrochromic system where the coloring unit and redox unit were separate. This electrochromic system combined the advantages of the stability of the metal ions and the color adjustability of the dyes. The electrochromic mechanism was found to be universal to multiple leuco dyes and the device showed an absorption change of 0.25 and a coloration efficiency of 192 cm2 C−1. Moreover, compared with our previous work, the cycle life was effectively improved (up to 4900 cycles), which was suspected to result from the smaller oxidizing potential of Fe2+. This approach to improve the cycle life of electrochromic devices may inspire further important results in the future.
研究领域:
材料科学
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化学
✓ 已验证
产品关联
DOI
高影响因子
Materials Today Communications
·
2025
·
IF 4.5
Yuan Jiang,Haiyang Wang,Tingting Nie,Yutong Lu,Peng Zheng,Liang Zheng,Yang Zhang
In this paper, boron and nitrogen co-doped carbon dots (BN-CDs) were prepared by a simple one-step solvothermal method. The synthesis involved citric acid as the carbon source, boric acid as the boron source, urea, and ammonia as the nitrogen sources, with N, N-Dimethylformamide (DMF) serving as the solvent. The BN-CDs exhibited dual emission peaks at 440 nm and 570 nm under 310 nm excitation wavelength, and white-light emission with chromatographic coordinates of (0.31, 0.33) was achieved. In addition, fluorescence probes based on BN-CDs were carried out in sensing water content in solvent and metal ion. Notably, BN-CDs exhibited a special solvation effect, with the limit of detection (LOD) of 0.075-1.5% as fluorescence probes on water content in dimethyl sulfoxide (DMSO), ethyl alcohol (EtOH), isopropanol (IPA), N-methyl pyrrolidone (NMP) and DMF. Furthermore, both emissions quenched linearly by Fe 3+ ions, proposing a sensitive method for selective ion detection with promising detection limits of 4.5 uM. These findings underscore the multifunctional potential of BN-CDs as versatile fluorescent probes for various sensing applications.
研究领域:
材料科学
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分析化学
✓ 已验证
产品关联
DOI
高影响因子
Advanced Optical Materials
·
2021
·Vol. 10
·期 1
·2101669
·
IF 9.926
Zhihao Zhou,Shuai Zhang,Yakun Le,Hong Ming,Yang Li,Shi Ye,Mingying Peng,Jianrong Qiu,Guoping Dong
Spinel configuration is a kind of broadly considered host candidate when designing persistent luminescence (PersL) materials due to the easy generation of vacancies and anti-site defects. Here, a new strategy of defect enrichment for the activation of PersL is proposed, and in contrast to the spinel configuration, it is demonstrated that the crystal structure of near inverse spinel ensures more numerous defects to activate the near-infrared (NIR) PersL of Fe 3+ . Fe 3+ -doped MgGa 2 O 4 displays the PersL band in the range of 600 to 900 nm and possesses a super-long PersL duration time >15 h. The optical analysis and the calculation of density functional theory unravel that the near inverse spinel structure can lower the carrier transfer barriers to accelerate the formation of carrier trap states within the bandgap. Therefore, more numerous defects in this structure may participate in the trapping and de-trapping process by comparison with the normal spinel configuration. These findings are expected to accelerate the development of new PersL materials through Fe 3+ doping toward versatile biological applications in NIR window.
研究领域:
材料科学
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光学物理
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生物医学工程
✓ 已验证
DOI
高影响因子
JOURNAL OF POROUS MATERIALS
·
2018
·Vol. 25
·期 6
·1587-1595
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IF 1.858
Shen Yu,Wang Fumin,Liu Wei,Zhang Xubin
A series of Fe 3+ containing catalysts were synthesized using ion-exchange technique over hierarchically porous ZSM-5 (M-ZSM-5) and micro-mesoporous composite ZSM-5/MCM-41 (ZSM-5/MCM-41), respectively. The prepared catalysts were characterized by X-ray diffraction, scanning electron microscope, transmission electron microscope, N 2 adsorption–desorption, UV–Vis spectroscopy, temperature programmed reduction and inductively coupled plasma-optical emission spectroscopy. The characterization results exhibit that the hierarchically porous ZSM-5 was synthesized with intracrystalline mesopores, while the micro-mesoporous composite ZSM-5/MCM-41 was prepared with the well-ordered mesopores. Furthermore, the results also prove that the existence of iron in the catalysts was mainly presented in the form of Fe 3+ ions. Catalytic performances of the samples for phenol hydroxylation were compared by using H 2 O 2 as oxidant. Under the optimized conditions, Fe 3+ ion-exchanged M-ZSM-5 (Fe-M-ZSM-5) shows that a phenol conversion of 42.3% obtained with 92.5% selectivity to dihydroxybenzenes, whereas Fe 3+ ion-exchanged ZSM-5/MCM-41 (Fe-ZSM-5/MCM-41) give 46.2% phenol conversion and 90.1% dihydroxybenzenes selectivity, which are all better than most reported results. The recyclability tests show that Fe-ZSM-5/MCM-41 with ordered mesoporous structure and bigger surface area has better anti-deactivation performance than Fe-M-ZSM-5. The excellent catalytic performances were due to the improved diffusion performance with newly created mesopores and the highly active Fe 3+ species obtained by ion-exchange technique.
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
Journal of Environmental Chemical Engineering
·
2024
·
IF 7.4
Shuting Zhang,Shuxin Li,Dongqin Yuan,Qiaoyun Gao,Yili Wang,Daxin Zhang
Pressurized electro-osmotic dewatering (PEOD) process is an emerging technology for high-efficiency solid-liquid separation of sludge and has garnered extensive interest. This study proposed a novel sequential conditioning process based on ozone (O 3 )/percarbonate (SPC) treatment followed by Fe 3+ coagulation, namely O 3 /SPC-Fe 3+ conditioning, to improve the performance of PEOD. The optimal operating conditions and the related dewatering performance of O 3 /SPC-Fe 3+ conditioning-PEOD process were investigated to verify the feasibility. The mechanisms of the O 3 /SPC-Fe 3+ conditioning on improving PEOD process were also discussed from the enhancement of the water/filtrate flow in pores. The results showed that 53.44 % water content and 0.95 g/g dry solid (DS) of bound water in dewatered sludge cake were attained in the O 3 /SPC-Fe 3+ conditioning-PEOD process with optimal O 3 aeration time of 12 min, SPC dosage of 0.0610 g/g DS and Fe 3+ dosage of 0.0310 g/g DS for sludge conditioning then 346 kPa mechanical pressure and 40 V voltage for dewatering. During the O 3 /SPC-Fe 3+ conditioning-PEOD process, the extracellular polymeric substance (EPS) matrix was disintegrated, and the inner EPS migrated to the outside along with water. The values of α-helix/(β-sheet + random coil) adjusted by O 3 /SPC-Fe 3+ conditioning process decreased to 7.38 and 5.12 in slime and LB-EPS, respectively, and these changes transformed to expose more hydrophobic sites. After conditioning, the proportion of protein-N decreased drastically from 81.67 % to 62.34 %, while the proportion of inorganic-N increased significantly from 18.33 % to 37.66 %, indicating that partial protein-N in EPS altered to inorganic-N. The enhancement of PEOD by the O 3 /SPC-Fe 3+ process can be attributed to the EPS hydrophobicity transformation and the degradation/mineralization of EPS by oxidation of generated ·OH. The former triggered the reduction of water/filtrate viscosity within the interfacial region of pores. The latter provoked the decrease of bulk viscosity of water/filtrate within the pores. These two effects relieved the viscous resistance to water/filtrate flow within pores and promoted dewatering.
研究领域:
环境工程
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污水处理
✓ 已验证
产品关联
DOI
高影响因子
ChemistrySelect
·
2025
·Vol. 10
·期 12
·e202404990
·
IF 2
Shuchen Pei,Kangli Yan,Xin Hou,Jinjing Zhou,Xinan Chen,Xue Yang,Kang Luo,Xiaoran Wang,Yao Liu
Graphical The P-CDs were synthesized using Hedyotis Diffusa Willd by using a hydrothermal method of which the morphology, chemical composition, and optical properties were characterized. The P -doped CDs showed effective antibacterial activity against E. coli and S. aureus . The P-CDs exhibited sensitive response to Fe 3+ in a broad linear range from 0.001 µM to 0.01 µM with a limit of detection of 4.43 × 10 −3 µM. In this research, P-CDs were compounded based on Hedyotis Diffusa Willd by using a hydrothermal method of which the morphology, chemical composition, and optical properties were characterized. The P-doped CDs exhibited effective antibacterial activity against E. coli and S. aureus . Strong electrostatic interactions between negatively charged bacteria and positively charged P-CDs, and the production of H 2 O 2 by P-CDs were thought to be responsible for bacterial death. Moreover, the P-CDs showed a remarkable fluorescent property with an excellent scope for detecting metal ion. The P-CDs exhibited sensitive response to Fe 3+ in a broad linear range from 0.001 µM to 0.01 µM with a limit of detection of 4.43 × 10 −3 µM. This study developed an affordable and environmentally friendly carbon dot as a valid antibacterial agent and an effective fluorescent sensor.
研究领域:
材料科学
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环境科学
·
微生物学
✓ 已验证
产品关联
DOI
高影响因子
Polymer Chemistry
·
2025
·
IF 3.9
Hongcai Wang,Xiuqiong Chen,Yanan Bu,Ting Wu,Huiqiong Yan,Qiang Lin
In recent years, Stimulus-responsive hydrogels have been extensively researched in the field of actuators due to their capacity to undergo significant deformation in response to various external stimuli. However, it is difficult for the existing hydrogel actuators to meet the requirements of simple preparation, fast response speed and shape memory function, which greatly limits their further application. In the present study, a multi-functional Fe3+-sodium alginate/poly (N-isopropyl acrylamide) interpenetrating network (IPN) hydrogel with ultrafast thermal response, shape memory function and solvent drive was prepared via a simple method. The creation of Fe3+-carboxylate coordination within the hydrogel network, coupled with ultraviolet (UV) photodissociation, was employed to achieve shape memory properties. Moreover, the local gradient of the hydrogel could be precisely programmed by manipulating the UV irradiation time and position. As a result, the obtained gradient hydrogels possessed excellent temperature driving and solvent driving properties, which could not only carry out 4 s fast grasp of objects in 70 ℃ water, but also achieve 2D to 3D complex deformation in methanol aqueous solution. This work provided a new manufacturing method and application prospect for the development of novel intelligent hydrogel actuators
研究领域:
材料科学
·
生物医学工程
✓ 已验证
产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2021
·
IF 4.539
Rongchuang Geng,Hanxiao Tang,Qiujuan Ma,Luping Liu,Weisheng Feng,Zhijuan Zhang
In this work, a series of bimetallic Ag/Zn-ZIF-8 materials were successfully developed for sensing toward traces of Fe 3+ and Cu 2+ . The bimetallic Ag/Zn-ZIF-8 was synthesized via a one-pot method. Interestingly, this obtained bimetal Ag/Zn-ZIF-8 exhibited high photoluminescence property and excellent fluorescence quenching response to target analytes with high selectivity , sensitivity and detection limits of 3.9 μM for Fe 3+ , 6.7 μM for Cu 2+ ions, respectively, both of which have been confirmed to be very comparable or better than the reported LMOFs sensors. The possible photoluminescence quenching mechanisms were studied in detail, revealing that the competitive absorption of excitation source and resonance energy transfer (RET) resulted from the host (imidazole of the framework, Lewis basic sites)-guest (metal ions of Cu 2+ and Fe 3+ , Lewis acid sites) interaction should be responsible for high efficiency fluorescence quenching. The binding energies of metal ions adsorption on the ZIF-8 obtained by DFT simulation were further performed to explain the higher quenching effect of Fe 3+ than Cu 2+ .
研究领域:
材料科学
·
分析化学
·
纳米技术
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）