JOURNAL OF MEMBRANE SCIENCE
·
2018
·
IF 6.578
Songbai Liu,Zhan Wang,Min Ban,Peng Song,Xufeng Song,Bushra Khan
In this work, we presented a facile and novel strategy, chelation–assisted in situ self-assembly, to prepare the loose polyacrylonitrile (PAN)–based nanocomposite membrane for dye desalination. Based on the chelate reaction polyethyleneimine (PEI) with metal ions, an Ag + –PEI complex layer was deposited onto the hydrolyzed PAN surface. Then, the chelate complex layer was served as the templates to in-situ synthesize the vitamin E succinate (VES)-functionalized AgCl nanoparticles，which were uniformly distributed on the membrane surface and provided additional transport pathways for water molecules. The prepared nanocomposite membrane achieved the permeability of 106.4, 101.2 and 92.3 L m −2 h −1 MPa −1 , which was 20–50% higher in comparison with that of the pure Ag + –PEI@HPAN membrane, with corresponding rejections of 99.2%, 99.5% and 99.8% to crystal violet, acid fuchsin and congo red solution at the concentration of 0.1 g L −1 . Meanwhile, this membrane possessed a low inorganic salts rejection (6.2%, 9.6% 8.3% and 12.8% for MgCl 2 , NaCl, MgCl 2 and Na 2 SO 4 ) and good stability during the 60 h filtration of dye-salt mixture. We anticipate that this novel route could be applied to prepare the polymer-supported nanocomposite membrane with enhanced separation performance.
研究领域:
材料科学
·
环境工程
✓ 已验证
产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2024
·
IF 4.9
Yurou Feng,Amatjan Sawut,Rena Simayi,Xieraili Maimaitiyiming,Xueying Jiao
With the advancement of science and technology, the issue of wastewater pollution has escalated, necessitating urgent attention to wastewater treatment . In this study, a highly efficient adsorbent for Cu 2+ was successfully synthesized through in situ self-assembly using Ca 2+ as the cross-linking agent in ZIF-8@ALG composite hydrogel. The results demonstrated that the incorporation of Ca 2+ as the cross-linker enhanced both adsorption capacity and swelling properties of ZIF-8@ALG composite hydrogel. Adsorption performance evaluation revealed that the hydrogel followed pseudo-second-order kinetic model for Cu 2+ adsorption and Freundlich isotherm model with a theoretical maximum adsorption capacity of 309.57 m g −1 . Thermodynamic analysis indicated that Cu 2+ adsorption onto the hydrogel occurred spontaneously with heat absorption. Furthermore, excellent reusability was observed after five cycles of usage without significant loss in adsorption efficiency. Overall, these findings highlight the potential application of ZIF-8@ALG composite hydrogel as an effective solution for wastewater remediation and recovery of heavy metal ions.
研究领域:
环境科学
·
材料科学
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化学工程
·
环境污染治理
·
重金属去除
✓ 已验证
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2024
·
IF 9.4
Fada Feng,Yikui Zeng,Dengfeng Yan,Quanming Ren,Bang Lan,Jinping Zhong,Biyuan Liu,Tao Dong,Haibao Huang
To clarify the key role of oxygen vacancy defects on enhancing the oxidative activity of the catalysts, metal–organic frameworks (MOFs) derived MnO X catalysts with different morphologies and oxygen vacancy defects were successfully prepared using a facile in-situ self-assembly strategy with different alkali moderators. The obtained morphologies included three-dimensional (3D) triangular cone stacked MnO X hollow sphere (MnO X -H) and 3D nanoparticle stacked MnO X nanosphere (MnO X -N). Compared to MnO X -N, MnO X -H exhibited higher activity for the oxidation of toluene (T 90 = 226 °C). This was mainly due to the large number of oxygen vacancy defects and Mn 4+ species in the MnO X -H catalyst. In addition, the hollow structure of MnO X -H not only facilitated toluene adsorption and activation of toluene and also provided more active sites for toluene oxidation. Reaction mechanism studies showed that the conversion of toluene to benzoate could be realized over MnO X -H catalyst during toluene adsorption at room temperature. In addition, abundant oxygen vacancy defects can accelerate the activated oxidation of toluene and the formation of oxidation products during toluene oxidation.
研究领域:
催化材料科学
·
环境科学
·
化学工程
✓ 已验证
DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2024
·
IF 8.1
Xinyue Zhang,Yichu Ma,Hengqiang Yang,Chenglong Shi,Qingjun Zhou
The development of electrode materials with high catalytic activity at intermediate temperature (600–800 °C) is essential for improving the output performance of solid oxide fuel cells. Here, we report low cobalt-based Sr 2 Fe 1.5-3x Ni x Cu x Co x Mo 0.5 O 6 (x = 0.05, 0.1, 0.15, SF x NCCM) as symmetrical electrode materials. With effective control of the anode side, Fe–Co–Ni–Cu nanoparticles precipitate from and are uniformly distributed across the parent surface, enhancing the electrode material's electrochemical performance. The output performance of single cell is better than that of Sr 2 Fe 1.5 Mo 0.5 O 6-δ symmetric cell without nanoparticle modification. In addition, the maximum power densities of the single cell with ∼300 μm thick Ce 0.9 Gd 0.1 O 1.95 as electrolyte and SF x NCCM as symmetrical electrode material reached 750, 620 and 621 mW cm −2 at 800 °C, respectively. The reversibility of nanoparticles exsolution and phase structure transformation are confirmed. The in-situ self-assembled electrode materials reported in this study provide a foundation for future research on fuel cell electrodes.
研究领域:
材料科学
·
能源科学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Analysis and Testing
·
2021
·Vol. 5
·期 1
·30-39
·
IF 0
Luo Rong,Xia Yunsheng
The exploration of novel fluorescent tools for subcellular analysis is of great importance for both chemical biology and biomedicine. Herein, we present an in situ self-assembly strategy for fabricating fluorescent and monodisperse CdS supraparticles (SPs), which are subsequently employed for mitochondria targeting applications. Using bovine serum albumin and linear chain cationic surfactants as templates and electrostatic modulators, respectively, CdS SPs can be well fabricated by the proposed one-step self-assembly approach in aqueous medium. In addition to high stability, favorable biocompatibility, as well as decent quantum efficiency, the as-prepared SPs have mitochondria targeting capacity due to their cationic surfactant modification. Interestingly, the localization capacity is positively correlated with the length of the cationic surfactant molecules. As the carbon chains of the cationic surfactant molecules enhance from 10 to 16 atoms, the colocalization efficiencies are correspondingly increased from 81 to 84%. Graphical abstract
研究领域:
化学生物学
·
生物医学
·
材料科学
·
纳米技术
✓ 已验证
DOI
Nano Energy
·
2024
·
IF 16.8
Miao Wang,Yating Gu,Jiarui Li,Huaizhu Wang,Mengfei Zhu,Junchuan Liang,Zuoxiu Tie,Jing Ma,Zhong Jin
In this work, we present a scalable in-situ growth strategy for self-assembling a carbon felt supported Bi 2 O 3 fractal nanostructure (f-Bi 2 O 3 /CF), enabling superior performance towards electrocatalytic CO 2 -to-formate conversion with an optimal Faradaic efficiency of 95.1% at −0.9 V ( vs . RHE) in flow cell. More impressively, the current density reaches an industrially relevant 235.7 mA cm −2 and remains a high FE formate of 87.7%. The enhanced catalytic activity of the f-Bi 2 O 3 /CF model is attributed to the increased adsorption energy of OCHO* intermediate by changing the surface charge distribution according to DFT calculations. Using the aforementioned method, a series of other CF supported metal oxide catalysts (i.e., CuO , In 2 O 3 , and SnO 2 ) are easily obtained. A brief techno-economic analysis (TEA) model demonstrates the economic potential of electrocatalytic hydrogenation of CO 2 into formate in flow cell. Our findings offer a promising pathway for the fabrication of stable and accessible fractal structure, applicable to a wide range of scenarios.
研究领域:
电化学
·
纳米材料
·
能源化学
·
环境催化
·
可持续能源
·
二氧化碳利用
·
电催化转化
✓ 已验证
DOI
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2025
·
IF 21.1
Yuzhe Liu,Xulei Sui,Lixiao Shen,Xingshuai Lv,Longji Yuan,Anyu Li,Xueda Du,Bin Wu,Wenliang Feng,Zhen Zhang,Hong Chen,He Qi,Hui Pan,Zhenbo Wang
The popularization of proton exchange membrane fuel cells is hindered by low activity, poor stability and low utilization rate of Pt catalyst. Herein, an organic molecule layer (OML) is first in-situ directionally assembled on Pt surface via hydrogen bonding and Pt-N coordination. The amino group in OML bond with adsorbed O₂ to facilitate O–O cleavage based on hydrogen bond effect, enabling dual-channel electron acceptance and boosting the intrinsic activity of Pt by 5.5-fold. The OML also acts as a protective matrix to enhance the stability of Pt. In H₂/Air fuel cells, the catalyst achieves 1.11 W cm⁻² at 0.67 V with low Pt loading of 0.125 mg cm⁻². Notably, it delivers no current decay at 0.8 V, 10 mV potential decay at 0.8 A cm⁻², and a mere 6 % mass activity loss after 30,000 cycles. These results outperform DOE 2025 targets and state-of-the-art Pt catalysts. The OML construction strategy offers innovative concepts for high-performance Pt catalyst design and enables large-scale production.
研究领域:
催化
·
电化学
·
材料科学
·
能量转换
·
纳米材料
✓ 已验证
产品关联
DOI
高影响因子
Soft Matter
·
2012
·Vol. 9
·期 6
·1885-1894
·
IF 4.39
Xuejun Chen,Na Xu,Nan Li,Lican Lu,Yuanli Cai,Ying Zhao,Dujin Wang
We describe the programmable selectivity of intra-/inter-chain coordination in the subcomponent self-assembly of a primary amine based block copolymer. A well-defined poly(6-aminohexylmethacrylamide hydrochloride)-block-poly(N-2-hydroxypropylmethacrylamide) (PHPMA-b-PAHMA) was synthesized via visible light activated aqueous RAFT polymerisation at 25 °C. The conjugation of 2-hydroxy-5-methoxybenzaldehyde (HMBA) in the absence or presence of small fractions of the nickel ion complex was monitored using 1H NMR and UV spectroscopy. Subcomponent self-assembly and the programmable selectivity of intra-/inter-chain coordination were studied using dynamic light scattering and 1H NMR. The results demonstrated that the coordinated HMBA was much more reactive than the free HMBA, which promoted the collapse and hydrophobic association of polymer chains and thus brought about the autocatalysis of imine formation inside the collapsed “hot spots”. The polymer chains progressively assembled into narrowly-distributed nanoparticles on adding small fractions of NiII(HMBA)2 rather than autopoietically splitting into smaller ones, as observed on adding pure HMBA. More importantly, the diversity of subcomponent self-assembly and solubility of aggregates originated from the programmable selectivity of intra-/inter-chain coordination.
研究领域:
高分子化学
·
自组装材料
·
配位化学
·
功能高分子
·
纳米材料
·
动态共价化学
✓ 已验证
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2025
·
IF 19
Jingjing Liu,Ke Pei,Yongshen Zhou,Shuangmin Fu,Shulun Ai,Yunli Wang,Huiyu Jiang,Zhiwen Zhou,Zhiguang Guo
The integration of bio-inspired nanostructured metal-organic frameworks (MOFs) with textiles opens new frontiers for smart wearable systems. This study develops a mechanically robust superhydrophobic AgTCNQ-MOF hybrid fabric via in situ self-assembly, mimicking cactus spines to achieve water contact and sliding angles of 159.2° and 1.8°, respectively. The optimized textile demonstrates multifaceted functionality: 1) Ultrahigh oil-water separation performance (efficiency: 98.4%; flux: 18.0 kL·m −2 ·h −1 ); 2) Anti-icing capacity extending freezing onset from 105 s to 685 s under −20 °C; 3) Full-spectrum UV resistance (UVA: 2.5%, UVB: 2.7%) with 99.8% antimicrobial efficacy; 4) Autonomous self-cleaning via contaminant-removing rolling droplets; and 5) Outstanding mechanical flexibility (6000 cycles) coupled with ultrahigh solar-thermal efficiency (91.5%) enabled by AgTCNQ-derived ultrasmall-bandgap (0.47 eV) engineering, a notable advancement over conventional systems. A covalent interfacial anchoring strategy ensures exceptional durability, maintaining superhydrophobicity after 30 abrasion cycles or 200 h UV exposure. The ultrasmall-bandgap of AgTCNQ uniquely optimizes photon-to-thermal conversion while maintaining multifunctionality, which is a key innovation differentiating this platform. This synergy between bandgap-engineered nanoporosity and textile flexibility enables real-time environmental responsiveness. Such integration bridges nanotechnology and textile engineering to address wearable-environmental challenges, advancing applications in medical wearables, industrial filtration, and adaptive robotics.
研究领域:
材料科学
·
纳米技术
·
纺织工程
·
环境功能材料
·
可穿戴设备
·
表面科学
·
能源转换
·
生物医学工程
✓ 已验证
产品关联
DOI
高影响因子
Materials Today
·
2025
·
IF 22
Muchao Chen,Yi Yu,Jiaying Hu,Yi-Chi Wang,Dongxu Zhao,Zhaoxin Ji,Lin Xu,Qiang Zhang,Baoye Ma,Yi Liu,Caifang Ni,Lin Gu,Youyong Li,Zhuang Liu,Yang Yang,Qian Chen
Hepatic arterial infusion chemotherapy (HAIC) delivers high local drug concentrations for hepatoma treatment but faces challenges such as catheter-related complications and systemic toxicity. To address these, we developed Mel-gel, an ultrasound-driven hydrogel system formed entirely by the chemotherapeutic agent Melphalan (Mel) without chemical modifications. Under ultrasound, Mel transitions from spherical to worm-like aggregates, rapidly forming a nanofiber-based hydrogel through non-covalent interactions. This innovative system offers sustained drug release, excellent bioavailability, and improved biosafety profiles. Mel-gel enables expedited catheter removal, reduces systemic toxicity, enhances local drug concentration, and prolongs drug-cell interaction time. Compared to conventional HAIC systems, Mel-gel’s unique in situ formation maximizes drug delivery and achieves superior targeting within complex vascular structures. In a rat orthotopic hepatoma model, Mel-gel-assisted HAIC demonstrated remarkable therapeutic efficacy, achieving a tumor inhibition rate of 98.09%, activating anti-tumor immune responses, and curing 60% of treated rats. This novel ultrasound-responsive hydrogel represents a promising advancement in hepatoma treatment, offering enhanced precision, efficacy, and safety. Additionally, Mel-gel’s versatile drug delivery capabilities may enhance the pharmacokinetics of various drugs and support synergistic therapies. This novel hydrogel system offers a promising advancement in hepatoma treatment, aiming to optimize outcomes and expand its application to other therapeutic agents.
研究领域:
肿瘤学
·
药物递送
·
纳米医学
·
生物医学工程
·
癌症治疗
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Wanxing Zheng,Yufei Tang,Rui Yang,Zhangwen Xie,Yani Sun,Kang Zhao
Effectively attenuating highly penetrative low-frequency noise (LFN, f < 500 Hz) presents a significant challenge. Traditional acoustic insulation materials are circumscribed by the mass law, presenting an inherent conflict between lightweight design and acoustic insulation. Despite the promising potential of PUA aerogels in acoustic insulation, attributed to their lightweight and high damping properties, their low-density results in inadequate areal density. Consequently, it remains challenging to effectively suppress LFN through mass inertia alone. Moreover, lightweight design often reduces mechanical properties, creating a conflict between lightweight, high strength, and low-frequency acoustic insulation. Inspired by the periodic structures of metamaterials, this study fabricates a PUA aerogel with an ordered metamaterial-like structure (density: 0.126 g/cm 3 ). Through self-assembly induced by sodium dodecyl sulfate (SDS), an ordered porous cavity and fibrous topological skeleton were formed. This structure creates an efficient interfacial reflection network that provides dynamic acoustic impedance for LFN attenuation. The average STL is at least 42.6 dB in the 45–500 Hz range and 39.6 dB in the broader 45–6300 Hz range, 16.35 times higher than that of commercial melamine foam of the same 2 cm thickness. Its weight is just 1/770 that of lightweight concrete bricks with equivalent noise reduction performance, and its thickness is only 2/25 of theirs. At 145 °C, the aerogel maintains a temperature difference of approximately 105.05 °C between its surfaces. The compressive strength of the modified aerogels is 2.76 times that of unmodified PUA aerogels. The simple, cost-effective fabrication process and the lightweight, high-strength, and outstanding low-frequency acoustic insulation properties make metamaterial-like PUA aerogels promising for noise reduction in residential, transportation, and industrial applications.
研究领域:
材料科学
·
声学超材料
·
噪声控制工程
·
聚合物纳米复合材料
·
可持续建筑材料
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Shoulu Yang,Zhongwei Wang,Zhu Liu,Yiqiang Wu
In this work, we present a simple and effective approach to enhance the fire safety and anti-corrosion performance of wood by forming in-situ self-assembled amphiphilic Ag-PW nanospheres (NSP) at room temperature. The morphology and acid capacity of the NSP were optimized by changing the ratio of phosphotungstic acid (HPW) and silver nitrate. The Ag-PW NSP were successfully integrated into the bulk of the wood, resulting in a durable treatment with minimal leaching. Comprehensive characterization techniques, including FTIR, XPS, XRD, SEM, TEM, and nitrogen adsorption–desorption analysis, confirmed the in-situ formation of Ag-PW NSP in the wood. The treatment exhibited low-leaching properties with only 5.89% of Ag-PW1a leaching out. The treated wood demonstrated excellent flame-retardant (FR) properties, as evidenced by a limiting oxygen index value > 28% and easy passage of the UL-94 test, with the formation of a high-density char layer. The flammable pyrolysis products released during combustion were found to be significantly altered, with a change in the depolymerization route of conversion of LGO under acid conditions to HMF, which was verified by DFT calculations. The treated wood also exhibited outstanding anti-corrosion properties, with a mass loss rate of less than 1%, compared to at least 32.3% for bare wood after the anti-white or brown-rot fungus tests. Moreover, the treated wood samples maintained their excellent FR properties even after leaching. Our study provides valuable insights for the rational design of nano-material additives for wood protection, thereby improving the usage of wood resources while mitigating health and environmental hazards.
研究领域:
材料科学
·
化学
·
木材科学与技术
·
纳米技术
✓ 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）