JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
·
2022
·
IF 4.383
Mehboob Hassan,Mirza Mahmood Baig,Khalid Hussain Shah,Aftab Hussain,Syeda Aqsa Hassan,Arshad Ali
The synthesis of an economical and efficient bifunctional electrocatalyst for general water splitting is necessary for the fabrication of eco-friendly H 2 energy. Herein, state-of-the-art ZIF-67-based CoSe/MoSe 2 hybrid nanospheres were synthesized and examined as a bifunctional electrocatalyst for Hydrogen evolution reaction (HER) and Oxygen evolution (OER) in basic media. For the first time, a hierarchical well-designed CoSe/MoSe 2 hybrid nanospheres designed with the uniform distribution layered of 2D-MoSe 2 and conductive CoSe nanoparticles are acquired from CoMoO 4 via selenization. Due to its large surface area and extraordinary morphology, it exhibited significant catalytic activity, which leads to a small overpotential of 110 mV for HER and for 240 mV OER along with low Tafel values of 54.24 and 51.98 mV dec −1 , respectively. Surprisingly, the stability is marvelous and also comparable to the standard of HER and OER. The enhancement is endorsed by the increase in conductivity evolved from the porous nanospheres and the collaborative effect of Co/Mo. To deliver a current density of 10 mA per cm 2 for full water splitting 1.56 V is required, which is one of the least reported voltages. Therefore, this work leads to a new class of catalysts for the fabrication of an efficient water electrolyzer.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2024
·
IF 8.1
Linlin Yu,Qian Jia,Cailang Lu,Ruoyu Chen
The development of a multifunctional sponge with photothermal effect for adsorbing high-viscosity oil, as well as magnetic drive and excellent flame-retardant property, is significant in the field of oil/water separation, but also extremely challenging. In this work, a multifunctional MOF-based polyurethane (PU) sponge was successfully prepared using a simple method. Fe 3 O 4 -loaded NH 2 -MIL-101(Fe) nanoparticles were immobilized on PU sponge via low surface energy polydimethylsiloxane (PDMS) to obtain superhydrophobic NH 2 -MIL-101(Fe)@Fe 3 O 4 @PDMS@PU sponge (WCA = 155.6°), which exhibited excellent oil absorption, oil/water selectivity and reusability. The introduction of NH 2 -MIL-101(Fe)@Fe 3 O 4 endowed the modified sponge with excellent photothermal properties, which was manifested in that with the help of solar energy, the sponge heated up rapidly and could achieve efficient adsorption of high viscosity oil. The magnetic property of the modified sponge made it effectively separate oil and water mixture along a certain path under the control of a magnetic field. In addition, the NH 2 -MIL-101(Fe)@Fe 3 O 4 @PDMS coating made the sponge exhibit excellent flame retardancy, which could effectively improve the safety of the modified PU sponge in practical applications. In summary, NH 2 -MIL-101(Fe)@Fe 3 O 4 @PDMS@PU sponge has potential application prospects in the oil/water separation field.
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
ACS Applied Engineering Materials
·
2023
·
IF 0
Cheng Ke,Jianxi Liu,Yubo Liu,Zhihuan Li,Tao Du,Yang Wu,Haibao Hu,Feng Zhou,Weimin Liu
Superhydrophobic surfaces with outstanding liquid-repellent properties have potential applications in anti-icing, self-cleaning, and corrosion protection, which rely on a stable gas–liquid interface and low surface energy for passive protection. However, there are still challenges in overcoming physical damage of the superhydrophobic surface and integrating self-healing and active deicing properties to boost their practical application. Here, we report a photothermal MOF-based superhydrophobic coating with synergistic protective functions of passive liquid-repellent properties (for self-cleaning, anti-icing, and anticorrosion) and active photothermal responsiveness (for deicing and photothermal self-healing). The multifunctional coating was prepared by the spray-coating method, in which fluoridated photothermal ferrocene-MOF nanosheets and SiO2 nanoparticles were applied in epoxy resin to develop their versatility. Passive liquid-repellent properties of the superhydrophobic surface caused high-efficiency removal of solid and liquid contaminants, freezing delay of droplets, and corrosion resistance. Moreover, rapid active deicing performance was achieved without damaging the textural structure of the coating. Importantly, the superhydrophobicity of the surface was maintained after mechanical abrasion. Also, the liquid-repellent properties of the plasma-etched coating recovered rapidly with light illumination due to the photothermal-induced migration of fluorosilane chains. Therefore, the synergy of passive liquid-repellent properties and active photothermal responsiveness provides a strategy for the design of multifunctional coating.
研究领域:
材料科学
·
表面工程
·
纳米技术
·
腐蚀防护
✓ 已验证
DOI
Materials Advances
·
2021
·Vol. 2
·期 12
·3871-3880
·
IF 0
Xueliang Mu,Yukun Zhong,Teng Jiang,U Kei Cheang
Magnetically driven mobile micro/nanorobots have a significant influence on the application and development of intelligent targeted drug delivery. However, the potential risk of biological toxicity is one of the major problems in drug-loaded micro/nanorobot fabrication. Therefore, there is an urgent need to combine the features (high cargo-loading, low biotoxicity, and good biodegradability) of metal–organic frameworks (MOFs) with micro/nanorobot mobility. In this paper, the concept of green chemical synthesis is used to prepare mass-manufactured biodegradable MOF-based microrobots with low biotoxicity and high drug loading for the targeted treatment of cancer cells. Based on the solvation principle of the binary solvent system, the two-component solvent will be mixed with aprotic polar solvents (X = DMAC, DMF, DMSO, NMP) and proton polar solvents (MeOH) to reduce original aprotic polar solvent toxicity. This can adjust the electrophilicity and polarity of the solution environment, change the configuration of organic ligands, and directly affect the nucleation and growth of MOF crystallites. The results show that five different MOF crystal structures can be synthesized on the surface of microrobots. The MOFs synthesized in a DMAC/MeOH solvent system have cubic structures with good biocompatibility and drug delivery properties. Furthermore, the magnetically actuated motion of MOF-based microrobots with different geometries was systematically tested to obtain the best swimming performance. Subsequently, the microrobots were guided through vascular-like microfluidic channels and can be precisely controlled. Thus, this establishes a foundation to create mass-manufactured microrobotic systems that provide a new direction for small-scale medical robots with low toxicity, high drug loading capacity, biodegradability, and precise motion control.
研究领域:
生物医学工程
·
材料科学
·
药物递送
✓ 已验证
DOI
MICROCHIMICA ACTA
·
2024
·Vol. 192
·期 1
·1-11
·
IF 5.3
Tian Siyu,Wang Jiahui,Jie Yu,Ding Zhu,Wang Xiao,Wang Jijiang,Hou Xiangyang
A novel nanobiosensor was constructed by in situ locating nanometer MnO 2 particles with controllable size and morphology in a Zr-MOF substrate to serve as an electrochemical probe. The synergistic effect of the two components, Zr-MOFs with high specific surface area and compatibility as a carrier for MnO 2 , resulted in improved electrochemical activity and excellent electrochemical identification performance for the MnO 2 @Zr-MOF/GCE biosensor. Under optimized experimental conditions and using CV and DPV technology, the biosensor showed a wide linear detection range (2–200 μM), a low detection limit (2.577 × 10 −8 M), a recovery range (106.26–115.01%), and maximum relative standard deviation (5.155) for tetracycline (TC) identification. The recognition mechanism of the sensor was investigated adopting Laviron adsorption theory. The applicability of the sensor was verified through practical measurements. Overall, the MnO 2 @Zr-MOF/GCE sensor possesses the advantages of fast analysis speed, high sensitivity, high selectivity, and simple operation, making it suitable for detecting trace amounts of TC in food. Graphical abstract
研究领域:
分析化学
·
食品安全
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Materials Chemistry A
·
2020
·Vol. 8
·期 43
·22728-22735
·
IF 11.301
Xu Ma,Zheng Deng,Zhuoyi Li,Danke Chen,Xinyi Wan,Xiaobin Wang,Xinsheng Peng
Solar-driven interfacial water evaporation (SDIWE) is a promising way to reduce the fresh water scarcity. However, it is still challenging to generate clean water from volatile organic compound (VOC) contaminated water via SDIWE. In this work, a free-standing MOF-based membrane (Zr–Fc MOF/SWCNT/gelatin, ZSG) with excellent photothermal properties and high Fenton catalytic activity is rationally designed for producing clean water from VOC contaminated water. Thanks to the hierarchical pore structure, excellent photothermal properties and good hydrophilicity of the ZSG membrane, an impressive water evaporation rate of 1.53 kg m−2 h−1 is achieved under 1 sun irradiation. Meanwhile, the Zr–Fc MOF has been demonstrated to be an efficient Fenton catalyst to promote the generation of ˙OH for degradation of methylene blue and phenol. As a result, the VOCs are degraded in situ to prevent their accumulation in the collected water, and the COD value of the regenerated water is lower than the drinking water hygiene standards. Besides, its salinity also meets the drinking water standards of the World Health Organization (1‰).
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
Small
·
2024
·
IF 13
Ting Chen,Caiyan Lai,He Zhao,Jie Yang,Kai Huang,Xu-Jia Hong,Yuepeng Cai,Renfeng Dong
Green and efficient total antioxidant capacity (TAC) detection is significant for healthy diet and disease prevention. This work first proposed the concept of TAC colorimetric detection based on microrobots. A novel metal-organic framework (MOF)-based biomimetic enzyme microrobot (MIL-88A@Fe 3 O 4 ) is developed that can efficiently and accurately detect the TAC of real fruits and vegetables. Unlike the previous colorimetric detection method to measure TAC which often requires the addition of toxic hydrogen peroxide (H 2 O 2 ) or light, the microrobots strategy can realize efficient TAC detection without any additional chemicals or stimuli. This is attributed to the oxidase-like activity from MIL-88A, which is discovered and confirmed for the first time by experiments and theoretical calculations. In addition, the microrobots can significantly accelerate the color reaction, resulting in a significant improvement in the detection efficiency of TAC in the motion state owing to their self-stirring effect. More importantly, the results of the MOF-based biomimetic enzyme microrobots strategy for detecting TAC in real fruits and vegetables are comparable to those tested by commonly used quantitative detection kits, in addition to low cost, excellent stability, and anti-interference ability. This attractive MOF-based biomimetic enzyme microrobot holds great prospects for future applications in catalytic sensing and promoting a healthy diet.
研究领域:
生物医学工程
·
分析化学
·
食品科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ANALYTICA CHIMICA ACTA
·
2020
·
IF 5.977
XianZhu Meng,HuiWen Gu,HongChao Yi,YongQiang He,Ying Chen,WeiYin Sun
A MOF-based bio-bar code material was synthesized and firstly applied to develop an electrochemical streptomycin (STR) aptasensor . By using MOF-based bio-bar code and enzyme-assisted target recycling for dual-signal amplification, highly sensitive detection of STR was achieved. The sensing surface was simply fabricated by immobilizing a mixed monolayer of thiolated cDNA/aptamer duplexes (dsDNA) and 6-mercapto-1-hexanol (MCH) on the gold nanoparticle modified screen printed carbon electrode (Au/SPCE). The presence of target STR caused highly efficient removal of the aptamers from dsDNA assisted by Exo I enzyme . Then MOF-based bio-bar codes were backfilled to achieve the adsorption of electroactive Ru(NH 3 ) 6 3+ (RuHex) on electrode surface. The electrochemical signal of the surface-confined RuHex was used for quantitation. The analytical performance for STR was satisfactory with a wide linear range of 0.005–150 ng mL −1 , a low detection limit of 2.6 pg mL −1 and a good selectivity towards other three antibiotics. Moreover, the application of this aptasensor for determination of STR in real milk samples was also realized. With these merits, this dual-signal amplification assay might provide one of the effective ways for food safety monitoring.
研究领域:
食品安全
·
分析化学
·
生物化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2022
·
IF 9.965
Jingyuan Liu,Min Liu,Subin Zheng,Xiaoyang Liu,Shunyu Yao,Fengyang Jing,Gang Chen
The construction of S-scheme heterojunctions is an effective approach to realize artificial photocatalytic processes. For the higher solar energy conversion efficiency, current research focuses on improving the interfacial intimacy and precisely modulating the strength of the internal electric field (IEF). To address this issue, we propose a novel MOF-based synthesis and derivation strategy. The heterojunction obtained by this strategy tends to form an intimate interface and a tunable IEF, which facilitates the transfer and separation of photogenerated carriers. Herein, a ZnS/ZnIn 2 S 4 (ZIS) S-Scheme heterojunction containing sulfur vacancies (Sv) was successfully synthesized, and its good photocatalytic hydrogen evolution reaction (HER) and CO 2 reduction reaction (CO 2 RR) activity confirmed the feasibility of this strategy. The prepared Sv-ZnS/ZIS exhibits an apparent quantum yield of 19.8 ± 1.0 % at 420 nm and a hydrogen evolution rate of 2912.3 ± 185.9 μmol g −1 h −1 , which is 9.0 and 33.6 times higher than pure ZIS and Sv-ZnS, respectively. Furthermore, the yield of photoreduction CO 2 to CO reaches 2075.7 ± 63.0 μmol g −1 h −1 with a CO selectivity of 93.0 ± 0.8 %. This work provides new sights for the rational design and construction of S-scheme photocatalysts with sulfur vacancies for efficient photocatalysis.
研究领域:
材料科学
·
光催化
·
能量转换
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2025
·
IF 9
Qian Jia,Tong Zou,Yukai Huang,Linlin Yu,Bin Zhang,Wenyu Wang,Shijie Zhang,Meng Guo,Ruoyu Chen
The management of high-viscosity crude oil leaks has become an environmental problem due to the fluid characteristics, and common adsorption materials are difficult to cope with. Based on the photothermal viscosity reduction technology, a superhydrophobic melamine composite sponge (OTS/CuS@CuFe-MOF/MS) with synergistic functions of magnetic control drive, photothermal conversion, and organic dye catalysis was prepared. The adsorbent material was prepared by loading core–shell structured CuS@CuFe-MOF and modifying octadecyltrichlorosilane (OTS) on melamine sponge as the substrate, showing excellent hydrophobic properties (WCA = 157.4°) and a stable oil–water separation efficiency of 98.9 % (20 cycles). Based on the photothermal synergistic effect of CuS@CuFe-MOF, OTS/CuS@CuFe-MOF/MS achieved a rapid temperature rise of 112.5 °C under 8.95 kW/m 2 light irradiation, and the pump oil adsorption amount increased significantly from 31.61 g/g to 57.02 g/g (an increase of 80.3 %). Additionally, the modified sponge had both photo-Fenton catalytic ability and could simultaneously purify oily wastewater. This multifunctional sponge provides an efficient and environmentally friendly solution for the magnetic control recovery of high-viscosity crude oil, and has important application value in the fields of environmental remediation and industrial cleaning.
研究领域:
环境修复
·
材料科学
·
化学工程
·
纳米技术
·
催化
✓ 已验证
产品关联
DOI
高影响因子
ANALYTICAL CHEMISTRY
·
2020
·
IF 6.785
Wei Zhang,Xiaolei Liu,Ping Li,Wen Zhang,Hui Wang,Bo Tang
Elucidating the relationship between glycosylation and phosphorylation of protein post-translational modifications is of great significance for understanding most diseases. Mass spectrometry has been widely used in research of protein phosphorylation and glycosylation. However, to realize in situ and dynamic analysis of the levels of phosphorylation and glycosylation in cells and in vivo, mass spectrometry still has certain difficulties. Herein, a nano-MOF-based fluorescent probe with Zr(IV) and boric acid as the active center was designed and prepared. Fluorescence detection and imaging of phosphate is achieved through the specific interaction of Zr(IV) and phosphate. With aim to achieve specific recognition of glycosylation sites, the boronic acid group was modified in the MOF structure, and the fluorescence of the MOFs was regulated by the alizarin red. Thus, the glycosylation sites were recognized by the competition between alizarin red and glycosyl. Finally, the nanoprobe was successfully applied for in situ fluorescence imaging of the levels of glycosylation and phosphorylation in depressed mice.
研究领域:
生物医学工程
·
分子生物学
·
神经科学
·
分析化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Nanoscale
·
2023
·Vol. 15
·期 34
·14165-14174
·
IF 6.7
Hai Huang,Yu Zhao,Haowei Yang,Jie Li,Yulong Ying,Jinhua Li,Sheng Wang
Three-dimensional motion (especially in the Z-axis direction) of metal–organic frameworks (MOFs)-based micromotors (MOFtors) is essential but still in its infancy. Herein, we propose a simple strategy for designing light-driven MOFtors that move in the Z-axis direction and efficiently kill Staphylococcus aureus (S. aureus). The as-prepared polypyrrole nanoparticles (PPy NPs) with excellent photothermal properties are combined with ZIF-8 through a simple in situ encapsulation method, resulting in multi-wavelength photothermally-responsive MOFtors (PPy/ZIF-8). Under the irradiation of near-infrared (NIR)/ultraviolet (UV)/blue light, the MOFtors all exhibited negative phototaxis and high-speed motion behaviour with the highest speed of 2215 ± 338 μm s−1. In addition, it is proved that these MOFtors can slowly self-float up in an aqueous environment. The light irradiation will accelerate the upward movement of the MOFtors, and the time required for the MOFtors to move to the top is negatively correlated with the light intensity. Finally, efficient antibacterial performances (up to 98.89% against S. aureus) are achieved with these light-driven MOFtors owing to the boosted Zn2+ release by vigorous stirring motion and physical entrapment by the upward motion under light irradiation.
研究领域:
材料科学
·
纳米技术
·
环境科学
·
生物技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）