Materials Today Chemistry
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2025
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IF 6.7
Liuqin Zhang,Huali Li,Gege Zhang,Qiuping Li,Fa-Qian Liu
Marine biofouling can cause economic, environmental and safety issues. Here the Cu-MOF/SiO 2 aerogel@PDMS coatings were prepared to prevent the colonization of fouling organisms. The Cu-MOF-74 which can continuously provide copper ions was successfully synthesized through a simple method. SiO 2 aerogel was employed to immobilize Cu ions (Cu-MOF) by the formation of - Si - O -Cu- O -, thereby achieving the goal of more stable release of copper ions from the coating. And the improvement of coating hydrophobicity also helps to enhance the stability of MOFs. The Cu-MOF/SiO 2 aerogel@PDMS coating exhibits significant long-term antibacterial performance, with a maximum antibacterial rate of 99.5 %. And it can enhanced the long-term static anti-biofouling performance of PDMS in the local sea by effectively preventing the colonization of macrofouling organisms (e.g. barnacles, calcareous tubeworms).
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INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2025
·
IF 8.3
Liandong Li,Ziqi Qiao,Bing Lin,Hailong Zhang,Yingying Wang,Zhe Sun,Yiping Hu,Denghao Ouyang,Shiyu Li,Hangzhou Wang,Junlei Tang,Caineng Zou
Electrolysis of neutral saline wastewater/seawater enables sustainable hydrogen production but faces sluggish hydrogen evolution reaction (HER) kinetics and poor durability in chloride-rich media. Herein, a novel Cu 2 S/Amorphous/Cu–Ni–Mo heterostructure electrocatalyst, prepared by electrodeposition and atomic layer deposition (ALD), was introduced to address these challenges. The electrode was synthesized by electrodepositing a Cu–Ni–Mo coating onto a stainless steel substrate, followed by in-situ sulfurization using ALD technology to form an amorphous layer, yielding a heterostructure with optimized interfacial properties. This heterostructure electrode exhibited an overpotential of 63.29 mV at −10 mA cm −2 and maintained stable operation at −100 mA cm −2 for over 180 h in 0.5 mol/L NaCl +1 mol/L phosphate buffered saline (PBS). A 10 cm × 10 cm electrode was successfully fabricated using this scalable method, which exhibited uniform morphology and stability exceeding 240 h. This work advances HER performance and scalability in neutral environments, facilitating industrial-scale electrocatalytic hydrogen production.
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PROGRESS IN ORGANIC COATINGS
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2025
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IF 7.3
Feiyang Cheng,Xiangfeng Zhu,Fucheng Yun,Mengting Wei,Chen Shi,Jian Han
As one of the most widely utilized polymer coating systems, polyvinyl chloride (PVC) is extensively applied in industrial protection fields due to its excellent processability and cost efficiency. To meet rising performance demands in extreme environments, developing PVC coatings with efficient flame retardancy and smoke suppression has become a key research focus. This study developed an innovative BiOCl@Cu-MOF hybrid through an in situ growth strategy. Incorporating the additive at 15 phr increased the limiting oxygen index (LOI) from 23.4 % to 29.4 %. The PVC coating also passed the UL-94 rating test, reaching the highest V-0 level. Cone calorimetry analysis showed a 55.9 % reduction in peak heat release rate, indicating superior flame retardant behavior. In terms of smoke suppression, the coating achieved a 66.7 % decrease in peak smoke production rate. More importantly, the peak carbon monoxide production, a critical lethal factor in fires, was suppressed by 46.9 %. The PVC coating further exhibited 99.9 % antibacterial efficacy against both Staphylococcus aureus and Escherichia coli . This work establishes a pioneering design paradigm for multifunctional protective coatings, offering significant potential in fire-safe building materials, electronics encapsulation, and bio-secure applications.
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ACS Nano
·
2025
·
IF 16
Yuanbo Yin,Liping Wang,Huishan Shang,Xilin Zhang,Wenxing Chen,Xiaoxin Zou
Double-atom catalysts (DACs) with asymmetric coordination are crucial for enhancing the benefits of electrochemical reduction of nitrate (NO3–) to ammonia (NH3) and advancing sustainable development; however, the rational design of DACs is still challenging. In this study, we synthesized atomically dispersed catalysts with lateral coordination sulfur-modified Cu–Ru sites (named N2S1Cu-RuN3/SNC). The abundant defects and low-electronegativity heteroatoms in the carbon-based framework endow the asymmetric local structure of N2S1Cu-RuN3 at the atomic level, which is confirmed by aberration-corrected electron microscopy and X-ray absorption spectroscopy (XAS). In electrocatalytic nitrate reduction, the N2S1Cu-RuN3/SNC shows a Faraday efficiency of 98.2% at −0.6 V versus reversible hydrogen electrode (RHE). Benefiting from the charge tuning effect between the metal site and the lateral coordination sulfur atoms, the ammonia yield reaches 0.02919 mmol cm–2 h–1. Additionally, in situ XAS and density functional theory (DFT) calculations reveal that Cu–Ru active sites in the asymmetric N2S1Cu-RuN3/SNC structure exhibit synergistic effects, modulating the adsorption of intermediates, lowering the energy barrier of key reaction steps, and enhancing the selectivity and yield of ammonia. This asymmetric bimetallic atomic catalyst facilitates deeper exploration of the precise synthesis and property modulation of atomic-scale materials.
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PubMed
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2025
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IF 8.5
Li Liu,Yuefeng Huang,Zhenqiang Kan,Yaohong Yang,Peng Wang,Yuju Chen,Dongyu Wei,Hong Lei,Guanben Du,Lianpeng Zhang
The application of biopolymers in adhesive design holds immense potential for advancing the sustainable manufacturing of high-performance materials. In this study, chitosan (CS), a renewable and biodegradable biopolymer, serves as the structural backbone for developing an innovative organic-inorganic hybrid resin Cu/ZIF-8@CS-MCS@BN. Initially, CS was chemically functionalized via crosslinking with maleic anhydride (MA) to form a maleated chitosan network (CS-MCS), exploiting the biopolymer's abundant amino and hydroxyl groups for covalent bonding. This chitosan-based network was subsequently reinforced with boron nitride nanosheets (BN) and copper-doped ZIF-8 metal-organic frameworks (Cu/ZIF-8), synergistically combining the flame-retardant and mechanical-enhancing properties of inorganic fillers with the organic network of the chitosan matrix. The Cu/ZIF-8@CS-MCS@BN resin was processed into two distinct wood composites: (1) plywood fabricated by hot-pressing poplar veneers with the resin exhibited exceptional interfacial adhesion, achieving a boiling-water-resistant shear strength of 1.01 MPa, which surpasses the requirements of the Chinese national standard GB/T 9846–2015; (2) lightweight aerogels prepared by freeze-drying resin-wood flour mixtures demonstrated outstanding compressive resistance (compressive modulus: 45.23 MPa) and fire safety (limiting oxygen index (LOI) = 42.8 %, UL-94 V-0 rating). This work establishes a green paradigm for fabricating multifunctional wood composites, highlighting the pivotal role of biopolymer engineering in next-generation construction materials.
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PubMed
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JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
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IF 6.3
Hongyu Wang,Tao Wang,Gonghao Li,Bo Wu,Ruijun Gao
Balancing increased recoverable strain with high phase transformation temperature is crucial for Cu-Al-Mn SMAs to cost-effectively overcome the service temperature limitation (<100°C) of NiTi-based SMAs. This study fabricated four types of Cu-12.5Al-3Mn SMAs modified with nano-Al₂O₃ p (0, 0.5, 1.0, and 1.5 wt%) using wire arc additive manufacturing (WAAM) with cored wires. It investigated the effects of nano-Al₂O₃ p on shape memory properties, exploring mechanisms via microstructural, phase, and hardness analysis. Results show that adding an appropriate amount of nano-Al₂O₃ p significantly enhances memory performance while maintaining high martensite transformation temperatures. The 0.5 wt% nano-Al₂O₃ p modified alloy exhibited optimal properties: a shape recovery rate of 87.77 % (13.8 % higher than the base alloy) and a recoverable strain of 7.02 % (>40 % higher than the commonly reported 5 %) under 8 % bending pre-strain. Its Ms temperature remained above 100°C (As, Af, Mf were largely unchanged), and full recovery time was halved compared to the unmodified alloy. The enhancement is attributed to nano-Al₂O₃ p strengthening the parent phase and improving thermoelastic martensite order via pinning. Their high stability under WAAM's high-energy heat source minimizes impact on alloy composition, while dispersed particles create lattice distortion and stress fields, reducing the energy barrier for martensitic transformation.
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Journal of Materials Chemistry A
·
2024
·Vol. 12
·期 12
·6968-6982
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IF 10.7
Jing Qi,Chengkai Lin,Shuqi Deng,Yinze Zuo,Hui Zheng,Xuechao Jiao,Wei Yan,Jiujun Zhang
Potassium (K) with higher abundance than lithium has been explored as an anode material for K metal batteries (KMBs) for possible application in large-scale energy storage. However, the unstable solid electrolyte interface (SEI) at the K anode due to uncontrolled growth of K dendrites is a challenge in KMB development. In this paper, a multifunctional interface containing Sb2O3 and reduced graphene oxide (rGO) on Cu foam to form a current collector (Cu@Sb2O3@rGO) is developed for a KMB anode through structural regulation, where the Cu form with a large surface area can reduce the volume change during charge and discharge processes, Sb2O3 can provide potassiophilicity toward uniform K plating and stripping to give a dendrite-free K anode, and rGO can provide abundant defects for increasing the ion transport and reaction kinetics. Such a Cu@Sb2O3@rGO current collector exhibits a remarkable reversibility of K plating/stripping for up to 600 cycles at 0.5 mA cm−2/2 mA h cm−2, and the formed Cu@Sb2O3@rGO@K anode demonstrates an extended cycle lifespan of 1300 hours under 0.2 mA cm−2/0.2 mA h cm−2 in symmetric cells. This anode-constructed PTCDA‖ Cu@Sb2O3@rGO@K full battery exhibits both exceptional cycling stability (over 2000 cycles) and outstanding rate capability (112.8 mA h g−1 at 10 C). Furthermore, even under extremely low temperature (−20 °C), this battery can still maintain an impressive 55% of its room temperature capacity. In situ Raman spectroscopic techniques and electrochemical methods including in situ EIS, half cell, symmetric cell, and full cell tests and theoretical DFT calculations are carried out to probe the structure–performance relationship and the reaction mechanisms for fundamental understanding toward further optimizing the performance of such the K anode and the corresponding KMBs. The strategy for stabilizing the K metal anode in this work may provide a guidance for further development of advanced low-temperature potassium metal batteries.
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APPLIED CATALYSIS B-ENVIRONMENTAL
·
2025
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IF 21.1
Shuting Liu,Ziyu Zengcai,Jingyao Yang,Tianhao Wang,Wenting Lin,Yunhong Pi,Tiejun Wang
To achieve highly efficient in situ hydrogen release from methanol/water reforming at lower temperature, integrating solar-energy provides a promising strategy to activate methanol/water while significantly reducing the activation energy. Herein, we report a series of novel MOF-based photothermal catalysts, mUiO-67-bpy-CuX, featuring enhanced H 2 O affinity and spatially isolated Cu-pyridine active sites for photothermal-driven reforming process of methanol solutions (PTRM). These catalysts exhibit distinct active sites that separately adsorb and activate H 2 O and CH 3 OH, with synergistically photothermal effect leading to an exceptional H 2 evolution activity of 121.1 mmol‧g cat −1 ‧h −1 within 80 min at 210 ℃ and an overall turnover number (TON) of 25904 over 68 hours without significant deactivation, with a high apparent quantum efficiency (AQE) of 54 %. Notably, the activation energy is reduced by 44 % compared to thermal-only systems, and the H 2 production is initiated even at 100 °C. The photothermal H 2 evolution activities of mUiO-67-bpy-CuX correlate with the lability of X counteranions, suggesting open coordination environments of Cu sites generated by labile X groups facilitate Cu + -N intermediate formation upon photoexcitation. Additionally, the Zr 6 nodes and increased mesoporosity in the modulated MOF enhance H 2 O adsorption and dissociation at low temperatures, promoting OH‧ generation. While Cu + -N interfaces are responsible for effective cleavage of the C-H bonds in CH 3 OH. This work highlights the design of MOF-based photothermal catalyst with isolated metal sites for enhanced H 2 production from CH 3 OH/H 2 O reforming at low temperatures.
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APPLIED CATALYSIS B-ENVIRONMENTAL
·
2025
·
IF 21.1
Xue Wang,Guo Li,Hao Huang,Hongxiang Jin,Yangyingzhi Liu,Fan Yang,Rong He,Wenkun Zhu
Electrochemical uranium extraction in real nuclear wastewater containing ultrahigh concentration of F - is challenging, which requires the development of extraction material with highly exposed active sites for dominant uranyl complex species. Herein, we implant open active pairs of Cu + -SO x on an open flower-structured Cu-S-O nanosheets by pulse electro-oxidation, enabling the efficient electrochemical uranium extraction in real nuclear wastewater with F - . In this case, the open structure ensures the sufficient contact with electrolyte, together with the open active pairs selective binding with the dominant UO 2 F x species. In simulated nuclear wastewater, the open Cu-S-O nanosheets with open active pairs possessed an optimum extraction efficiency of 98.6 % in 300 min, which was 1.2-time larger than that of CuS nanosheets. Moreover, the Cu-S-O nanosheets maintained the remarkable efficiency regardless of the variation of pH, the interfering ions, and the ratio of U/F. The mechanistic study revealed an evolution of UO 2 F x adsorption, uranium reduction, and UO 2.34 crystallization. In real acidic nuclear wastewater from the fabrication of fuel element, the Cu-S-O nanosheets electrochemical extracted 95.6 % of the uranium, with a facile collection of the uranium oxide product.
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FUEL
·
2025
·
IF 7.5
Kejie Zhang,Weijian Hua,Renhui Ruan,Baochong Cui,Mingxing Su,Xuebin Wang,Houzhang Tan
The electrochemical reduction of CO 2 into valuable chemicals presents a promising CO 2 mitigation technology. However, rapid preparation of efficient and stable catalysts remains a challenge. The “droplet-to-particle” method allows for the rapid synthesis of catalysts with precise elemental composition control. In this study, Cu-Zn bimetallic nanoparticle catalysts with phase-separated structures and varying elemental compositions were prepared using this method. The formation process of the catalysts was analyzed, and their performance in CO 2 electroreduction was investigated. Aerosol dynamics simulation revealed that the formation process of the catalyst particles involves the transformation from a single droplet to a single particle. TEM observations showed hollow regions in the center of the catalyst particles, attributed to the rapid evaporation of the droplets, which led to the formation of hollow particles in some cases. This also explains why some catalyst particles had a larger actual diameter than the theoretical solid particle size. By calculating the residence time of droplets in the reactor, it was found that the transformation from droplets to particles occurred within approximately 4.37 s, indicating the rapid formation of catalyst particles. On the other hand, electrochemical experiments demonstrated that when the Cu/Zn molar ratio was 2:8, the faraday efficiency (FE) of CO reached up to 73 % at −1.1 V vs. RHE, with stable performance over 8 h of operation. Density functional theory (DFT) calculations indicated that the introduction of Zn lowered the energy barrier for the rate-determining step of *COOH formation, promoting the generation of CO. This study provides an in-depth investigation into the “droplet-to-particle” catalyst synthesis process, which is characterized by simplicity, rapidity, ease of control, and cost-effectiveness. These features offer an effective strategy for the industrial application of CO 2 electroreduction.
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CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Ziyi Li,Jia Xiong,Yufei Huang,Yangqiang Huang,Geoffrey I.N. Waterhouse,Ziyun Wang,Yu Mao,Zhiwu Liang,Xiao Luo
Photocatalytic CO 2 reduction reaction (CO 2 RR) is usually constrained by sluggish kinetics and low product selectivity. Herein, a Cu-doping multi-tier hierarchical S-scheme heterostructure Cu-ZnIn 2 S 4 /ZIF-67 was fabricated, achieving highly efficient photocatalytic CO 2 RR under visible light without additional thermal input. At low pressure (absolute pressure 40 kPa), the optimized catalyst 2Cu-ZISF demonstrated a CH 4 yield of 22.27 μmol g −1 h −1 with a selectivity of 94.7 %. In situ XPS and EPR confirmed that the photogenerated charge transfer obeys an S-scheme mechanism, with Cu sites serving as electron-rich centers, facilitating spatial charge separation. In situ DRIFT detected reaction intermediates of photocatalytic CO 2 RR mechanism, and Gibbs free energy calculations via Density Functional Theory revealed that Cu incorporation significantly stabilizes surface CO* species, thus reducing CO(g) production and facilitating hydrogenation, thereby acting as targeted active sites for CH 4 production. This work overcomes the limitations of slow reaction kinetics and offers an in-depth understanding of how to design effective S-scheme heterojunction photocatalysts and their charge transfer mechanisms.
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Journal of Materials Chemistry C
·
2024
·
IF 5.7
Ruixin Sun,Jinxing Zhao,Ouyang Lin,Yu Li,Xiulin Xie,Wentao Niu,Zhe Yin,Aiwei Tang
I–III–VI-group semiconductor nanocrystals (NCs) have received extensive attention for use in quantum-dot light-emitting diodes (QLEDs) due to their nontoxic nature, large-scale tunable emission wavelength and straightforward synthesis. At present, research on ternary CuGaSe2 (CGSe) NCs is gradually being carried out. CGSe-based semiconductor NCs with a wide and tunable bandgap exhibit significant promise for efficient QLEDs preparation. In order to improve their functionality, stability and dispersion, Zn2+ was introduced into CGSe cores, which were coated with wide-band-gap ZnS to form Cu–Ga–Zn–Se/ZnS NCs to improve their luminescence performance. In this work, a series of Cu–Ga–Zn–Se/ZnS NCs with tunable emission from 603 to 524 nm and a photoluminescence quantum yield (PLQY) of 96% could be acquired by precisely controlling the non-stoichiometric Cu : Ga molar ratios in the synthesis of the CGZSe cores. Furthermore, green luminescent CGZSe/ZnS NCs were obtained by adjusting the amount of crucial Zn precursors during nucleation and shell formation. The green QLEDs based on these NCs show a high external quantum efficiency of 5.8% and a high brightness of 7016 cd m−2. This work reveals new possibilities for the design of novel and efficient Cd-free green QLEDs.
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