INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
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2025
·
IF 3.9
Jinyuan Shi,Xiaoyan Huang,Yujie Li,Tianqi Sun,Qian Qiu,Xingmao Jiang,Changwei Shi
Molybdenum carbide (Mo2C) is a promising hydrogen evolution reaction (HER) catalyst, and conventional nanoparticles suffer from poor conductivity, large size, and low active-site utilization. Herein, a novel hollow carbon nanocage embedded with the Mo2C nanocrystal catalyst (Mo2C-HPCS) was developed through an in situ growth and self-sacrificial approach. ZnO nanospheres acted as sacrificial templates, releasing Zn2+ to coordinate with 2-methylimidazole (2-MIM) for ZIF-8 assembly and evaporating during pyrolysis to generate hollow structures. Simultaneously, MoO42– species were uniformly incorporated into the ZIF-8 framework, ensuring a homogeneous Mo distribution. The resulting Mo2C-HPCS possesses a multilevel porous N-doped carbon framework (NC) that enlarges the surface area, exposes more active sites, promotes electron transport, and prevents Mo2C agglomeration. Mo2C-HPCS delivers superior HER activity with a low overpotential of 99 mV at 10 mA cm–2 in 1 M KOH. Density functional theory calculations confirm that Mo2C_NC synergy optimizes the hydrogen adsorption free energy, accelerating HER kinetics.
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APPLIED CATALYSIS B-ENVIRONMENTAL
·
2025
·
IF 21.1
Shijie Zhang,Dongren Cai,Guifen Du,Weiming Zhu,Jingliu Yang,Xiaoman Wen,Xing Yan,YiKun Zhou,Sajid Ali,Kok Bing Tan,Kang Sun,Guowu Zhan
Regulating product selectivity in CO 2 thermocatalytic hydrogenation remains challenging, particularly for shifting inherent preferences toward C 1 products. Here, we demonstrate that atomic layer deposition (ALD) of ZnO on nickel vanadate precursor (NiVO) enables a dramatic shift from methane (CH 4 ) to carbon monoxide (CO). The optimized NiVO-10ZnO-R400 (10 ALD cycles) achieves 88.1 % CO selectivity at 350°C and 0.1 MPa, surging from 1.3 % over unmodified NiVO-R400. Crucially, ALD-engineered Ni-ZnO interfaces exhibit superior CO production and stability (>200 h) compared to impregnation-synthesized counterparts, attributed to sufficient Ni-ZnO contact. Multimodal characterization and theoretical calculations reveal that ZnO-to-Ni electron transfer generates an electron-rich Ni surface, weakening CO 2 /CO adsorption and lowering surface H concentration. This suppresses the CO→CH 4 step in the CO 2 hydrogenation pathway (CO 2 →CO→CH 4 ), thereby redirecting product selectivity toward CO rather than CH 4 . Our work provides a precise interface-engineering strategy to manipulate reaction pathways for CO 2 utilization.
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Food Packaging and Shelf Life
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2025
·
IF 10.6
Dan Chen,Shiyu Lin,Liming Cao,Wei Huang
Antibacterial food packaging plays a crucial role in preserving food quality and extending shelf life. Polyvinyl alcohol (PVA) is widely used in food packaging, but its lack of inherent antimicrobial properties restricts its wide applications. Zinc oxide (ZnO) is an effective antibacterial agent. However, the uniform dispersion of ZnO nanoparticles (NPs) remains a challenge. To address this, hybrid NPs were constructed using cellulose nanocrystals (CNC) and cellulose nanofibrils (CNF) as bio-templates with ZnO in-situ loading onto their surfaces. These hybrid NPs were then incorporated into PVA/chitosan (4:1, w/w) compound to prepare transparent and antibacterial packaging films. The results indicate that ZnO loaded on the surfaces of CNC or CNF exhibited distinct morphological features. Antibacterial tests revealed that the combination of CS and ZnO exhibited organic-inorganic synergistic antibacterial activity. Furthermore, the hybrid NPs enhanced the mechanical strength and hydrophobicity, with CNF-ZnO showing superior reinforcement. Preservation tests on strawberry demonstrated that the films outperformed PE and PVA/CS films, indicating their effectiveness in maintaining fruit quality and prolonging shelf life.
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CHEMICAL RESEARCH IN CHINESE UNIVERSITIES
·
2023
·Vol. 39
·期 6
·1064-1069
·
IF 3.1
He Huan,Zou Zhengxi,Hua Weiming,Yue Yinghong,Gao Zi
A series of ZnO-modified cobaltous ion exchanged ZSM-5 catalysts is prepared using incipient wetness impregnation and characterized by X-ray diffraction (XRD), N 2 adsorption, transmission electron microscopy (TEM), UV-Vis diffuse reflectance spectroscopy (DR UV-Vis), X-ray photoelectron spectroscopy (XPS), pyridine-adsorbed Fourier transform infrared (Py-IR) and Raman. Their catalytic performance towards CO 2 -assisted dehydrogenation of ethane to ethylene has been evaluated. The addition of ZnO onto CoZSM-5 obviously improved the yield of ethylene as well as the conversion of CO 2 . The promoting effect is attributed to the good activity of ZnO for the reverse water gas shift (RWGS) reaction, which enhances the coupling between RWGS and ethane dehydrogenation.
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Journal of Environmental Chemical Engineering
·
2026
·Vol. 14
·期 5
·124392
·
IF 7.5
Xinya Wang,Yongshuo Zhang,Zihao Li,Qi Wang,Wei Zhang,Yanjie Wu,Mingxing Chen
Janus membrane has been attracting more and more attention in field of oil-water separation, owing to its asymmetric wettability on opposite surfaces. Inspired by the special structure of lotus leaves and Setaria viridis, we successfully fabricated dual-bioinspired Janus nanofiber membranes via sequential electrospinning and low-temperature hydrothermal synthesis. The structure and performance were modulated by adjusting Zn(NO 3 ) 2 ·6H 2 O concentration and Zn(Ac) 2 ·2H 2 O addition amount. Specifically, with the Zn(NO 3 ) 2 ·6H 2 O concentration increasing from 0 g·L −1 to 22.2 g·L −1 , the diameter of ZnO NWs increased and the hydrophilic nanofiber layer became denser. When Zn(NO 3 ) 2 ·6H 2 O concentration was 14.8 g·L −1 , the hydrophilic nanofiber layer of obtained Janus nanofiber membrane exhibited excellent separation performance for oil-in-water emulsions with remarkable separation flux of 1957.68 L·m −2 ·h −1 and high separation efficiency of 98.53%. Moreover, the hydrophobic nanofiber layer showed relatively excellent separation performance for water-in-oil emulsions with remarkable separation flux of 1336.77 L·m −2 ·h −1 and high separation efficiency of 98.98%. Additionally, with Zn(Ac) 2 ·2H 2 O addition amount increasing from 0 wt% to 2.0 wt%, the growth density of ZnO NWs increased, while the diameter decreased slightly. Correspondingly, the separation flux and separation efficiency of hydrophilic nanofiber layer for oil-in-water emulsions increased with increase of Zn(Ac) 2 ·2H 2 O addition amount. Besides, the incorporation of ZnO NWs endowed the Janus nanofiber membranes with intrinsic antibacterial properties against both E. coli and S. aureus . Our study not only emphasized the tunability of Janus nanofiber membranes but also highlighted their dual functionality as effective option for effective oil-water separation and antibacterial barriers.
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JOURNAL OF MATERIALS SCIENCE
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2026
·
IF 4.4
Yang Shengdu,Meng Yuchan,Chen Ding,Sun Xin,Zhao Xiaohai
Stereo-complexed poly(lactic acid) (PLA) membranes are highly attractive for sustainable applications, yet achieving a synergy between mechanical strength and superhydrophobicity remains a significant challenge. Herein, a hierarchical crystallization strategy was developed to fabricate high-performance stereo-complexed PLLA/PDLA/ZnO porous composite membranes by integrating methacryloxypropyltrimethoxysilane (MPS)-modified ZnO nanoparticles (NPs). By optimizing the MPS-ZnO content within a 9:1 PLLA/PDLA blending matrix, a remarkable 182% increase in tensile strength (from 2.14 to 6.05 MPa) was achieved, while simultaneously attaining stable superhydrophobicity with a water contact angle of 155.4°. Both differential scanning calorimetry (DSC) and X-ray diffraction (XRD) results revealed that MPS-ZnO NPs function as efficient heterogeneous nucleating agents, significantly enhancing stereo-complex (SC) crystallization. Crucially, a “dual-directional traction force” was proposed as a possible mechanism at the molecular level, i.e., the concurrent growth of SC and HC (homo-crystallization) phases induces a confined, oriented crystalline state in the intermediate polymer chains. This unique structure assumption effectively establishes potential correlations in the connection between varying crystalline phases. Furthermore, the composite membranes displayed improved thermal insulation, with thermal conductivity decreasing to 0.055.6 W m −1 K −1 due to enhanced phonon scattering at the complex hierarchical interfaces. This work provides a versatile approach for designing biodegradable functional membranes with superior structural integrity and tailored surface properties for advanced filtration and insulation. Graphical
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MICROCHEMICAL JOURNAL
·
2026
·
IF 5.2
Chenxuan Ai,Xueli Yang
MOF-derived ZnO and Au-ZnO materials were synthesized via a coprecipitation method. • The response value of 0.5 wt% Au-ZnO to 100 ppm n-butanol is 649.77 at 250 °C. • Response time is just one second, enabling real-time detection of n-butanol. • This sensor has a low detectable concentration, excellent selectivity and stability. N-butanol is a flammable volatile organic compound (VOCs) posing potential threats to human health and environmental quality, making its real-time detection critically important. Although Au-functionalized MOF-derived ZnO has been investigated for gas sensing, the influence of Au loading on surface-defect regulation and n-butanol sensing behavior remains insufficiently understood. Herein, porous ZnO rhombic dodecahedra derived from ZIF-8 were functionalized with controlled Au loadings of 0.25, 0.5, and 0.75 wt%. The optimized 0.5 wt% Au-ZnO sensor exhibited a response of 649.77 and a response time of 1 s towards 100 ppm n-butanol at 250 °C, with the response being approximately 3.6 times that of pristine ZnO. A measurable response of 1.41 was obtained at 50 ppb, representing the lowest experimentally verified concentration in this study. The sensor also demonstrated good selectivity, repeatability, and long-term stability. XPS analysis showed that the 0.5 wt% Au-ZnO sample possessed the highest relative oxygen-vacancy content of 34.8%. DFT calculations further suggested a stronger adsorption tendency of n-butanol on the Au-ZnO surface than on pristine ZnO. These results demonstrate that controlled Au loading provides a favorable balance among interfacial charge modulation, oxygen-vacancy regulation, catalytic activity, and adsorption-desorption kinetics. The dodecahedral structure of the MOF-derived ZnO confers high sensitivity to n-butanol on the sensor, providing uniform anchoring sites for gold nanoparticles (Au NPs). Through Schottky barrier modulation, catalytic effects and oxygen vacancy enhancement, the modification with Au NPs further improves the capture efficiency and signal amplification for n-butanol concentrations in the ppb range. Download: Download high-res image (231KB) Download: Download full-size image
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ACS Catalysis
·
2026
·
IF 13.6
Fan Chen,Jinming Wang,Yuan He,Dandan Liu,Lin Hu,Rui Shi,Yana Liu,Jiguang Zhang,Yunfeng Zhu,Jun Wang
Photocatalytic aerobic oxidation of methane (CH4) to methanol (CH3OH) offers an alternative to the current energy-intensive route for CH4 utilization, while suffering from the activity-selectivity trade-off due to the uncontrolled generation of reactive oxygen species (ROS). Herein, we perform the photocatalytic CH4 aerobic oxidation in the presence of H2 over a PdCu NPs-modified ZnO catalyst, which exhibits a CH3OH yield of 13.5 mmol gcat–1 h–1 and a selectivity of 71.1%, surpassing many previously reported results. The introduction of H2 enables more ROS production simultaneously from photoelectron-induced O2 reduction and in situ-produced H2O2, facilitating the conversion of CH4. Compared to Pd, the PdCu cocatalyst favors the generation of more •OOH radicals in the ROS. More importantly, it is proposed that intermediate CH3OOH can be converted to CH3OH by H2-derived Pd–H species, which could also scavenge the excessive •OH radicals and holes, thus promoting the productivity of CH3OH and suppressing overoxidation. This work provides a strategy to regulate ROS formation for efficient CH4 oxidation into CH3OH under mild conditions.
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CERAMICS INTERNATIONAL
·
2026
·
IF 6
Xuetong Zhao,Jianglin Wang,Yang Yang,Qi Wang,Shenglin Kang,Yuchen Li,Guilai Yin,Hongwen Liu,Jindong Yang,Jing Guo
Conventional ceramic sintering generally requires high sintering temperatures, high energy consumption, and long processing time. To overcome these limitations, a rapid and highly efficient cold sintering/spark plasma sintering (CSP/SPS) is employed, with ZnO serving as a model system to systematically investigate the effects of different transient liquid phases, including water, CH 3 COOH and NaOH solution on the sintering behavior. ZnO shows appreciable solubility under both acidic and alkaline conditions. During CSP/SPS, the [Zn(CH 3 COO)] + complex promotes ZnO reprecipitation more effectively than [Zn(OH) 4 ] 2- , leading to superior cold sintering performance in the CH 3 COOH system. A relative density exceeding 95% is achieved at 100 MPa/150 °C in the CH 3 COOH system, whereas the NaOH system requires more stringent conditions (150 MPa/200 °C) to reach comparable densification. Due to the limited solubility of ZnO in water, high densification is achieved only under more severe conditions (150 MPa/250 °C). The CSP/SPS approach leverages SPS-enabled rapid heating to preserve the transient liquid phase and thereby facilitate the dissolution-precipitation process during cold sintering. Systematic comparison of different transient liquid phases reveals that densification efficiency is governed by both solubility and precipitation kinetics. Enhanced electrical conductivity in wet compacts may enable localized charge transport, while electric-field-induced point defects and liquid-solid interfacial chemical defects enhance mass transport and accelerate densification. This work provides a mechanistically informed strategy for the low-temperature, energy-efficient fabrication of ceramic materials.
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Nanomaterials
·
2026
·Vol. 16
·期 7
·438
·
IF 4.8
Congwen Liu,Wei Deng,Hai Zhang,Xiaochen Han,Qiang Ran,Wenxuan Yu,Xiaoling Xu,Zuowan Zhou
Photocatalytic degradation is a highly efficient, stable and promising technology for water treatment. Developing high-performance photocatalysts is crucial for removing aquatic contaminants. However, traditional zinc oxide (ZnO) photocatalysts are severely restricted by intrinsic drawbacks, such as a wide band gap, fast recombination of photogenerated carriers, and high photocorrosion tendency. Conventional powder catalysts also suffer from difficult recovery and serious secondary pollution. Therefore, developing simple strategies to fabricate high-performance, reusable, and stable ZnO-based photocatalysts is of great scientific and practical importance. In this work, silver-loaded nitrogen-doped ZnO nanoarrays (AgY@NX-ZnO NAs, where X and Y represent the urea and AgNO3concentrations, respectively) were synthesized on 304 stainless steel sheets (SSS) using a two-step hydrothermal method combined with photoreduction at room temperature. The samples were characterized by XRD, FESEM, XPS, and UV-Vis DRS, and the catalytic mechanism was studied through active species trapping and EPR. Nitrogen doping and Ag loading exhibited a strong synergistic effect, narrowing the band gap, enhancing visible-light absorption, and promoting the separation of photogenerated carriers. The optimal sample (Ag1.5@N4-ZnO NAs) degraded 93.2% of Rhodamine B (RhB) within 180 min, with a reaction rate constant 2.65 times higher than pure ZnO. The main active species were ·O2−and ·OH. This work provides a feasible route to fabricate recyclable and stable stainless steel-based ZnO nanoarray photocatalysts for efficient water purification.
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PubMed
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PROGRESS IN ORGANIC COATINGS
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2026
·
IF 7.9
Mengmeng Zhang,Zhihui Sui,Longyu He,Bingchi Zhang,Yuxin Zhang,Wenrui Chi
Amid ongoing innovation in functional textiles, single-function materials, characterized by relatively limited performance profiles, increasingly fall short of the diverse, integrated functional demands encountered in real-world applications. Consequently, the development of multifunctional fabrics that concurrently deliver flame retardancy, hydrophobicity, UV resistance, and antibacterial activity has emerged as a critical research frontier, bearing both substantial scientific merit and high translational potential. In this work, waterborne polyurethane (WPU) was synergistically modified through the co-incorporation of surface-functionalized nano-ZnO, 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOPO), and a fluorosiloxane (HPFSi), yielding a stable, ternary-modified emulsion designated ZnO/DOPO/fluorosilicone waterborne polyurethane (ZnO/PFSiWPU). This emulsion was subsequently applied to hemp fabric via coating-based finishing. Comprehensive evaluation revealed that the treated fabric exhibits outstanding integrated functionality: a limit oxygen index (LOI) of 36.2%, confirming superior flame retardancy; a water contact angle (WCA) of 151.5° ± 2.7°, indicative of durable superhydrophobicity; an ultraviolet protection factor (UPF) of 71.21, reflecting highly effective UV shielding; and antibacterial inhibition rates of 99.6% against Staphylococcus aureus and 99.9% against Escherichia coli , demonstrating robust, broad-spectrum antimicrobial efficacy. Notably, the incorporation of modified nano-ZnO into the coating system markedly improved the fabric's antibacterial and UV-resistant performance, while concurrently enhancing its flame retardancy and hydrophobicity. This finding elucidates a synergistic enhancement mechanism mediated by nano-ZnO within the multi-component composite coating, thereby offering both conceptual insights and a theoretical foundation for the rational design and development of multifunctional, high-performance textile coatings.
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MACROMOLECULAR BIOSCIENCE
·
2026
·Vol. 26
·期 3
·e70172
·
IF 4.2
Teshale Ayano Begeno,Tibebu Shiferaw Kassa,Tassew Belete Bahru,Chen Shuhuan,Shi Jialei,Yong Liu,Lingling Qin,Yaqi Zhang,Zhenxia Du
Skin wound healing involves proliferation, inflammation, regeneration, and remodeling. These processes are severely impaired in diabetes due to advanced glycation end-product accumulation, excessive reactive oxygen species, and vascular dysfunction, requiring multifunctional therapeutic and innovative wound care approaches. Thus, many electrospun polymeric matrices were investigated to enhance wound-healing efficacy; however, few studies have examined ZnO NPs embedded multi-component polymeric nanofibers for diabetic wound healing, where infection, oxidative stress, and delayed regeneration persist as major impediments to diabetic wound repair. Addressing these challenges, this study developed a novel therapeutic strategy using electrospun nanofibers of poly(vinyl alcohol)-chitosan-poly(methyl methacrylate) (PVA-Cs-PMMA) integrated with biogenic zinc oxide nanoparticles (Bio-ZnO NPs) synthesized from Syzygium guineense . Comprehensively characterized using UV-vis, FTIR, XRD, TEM, SEM-EDX, and XPS analyses, confirming nanoscale crystalline structure and strong polymer-nanoparticle interactions. Bio-ZnO NPs exhibited potent antibacterial activity against Staphylococcus aureus (29.38 ± 0.91 mm) and Escherichia coli (27.82 ± 0.95 mm), alongside strong antioxidant performance (IC 50 = 11.60 mg mL −1 , R 2 = 0.966). In vivo diabetic wound demonstrated accelerated healing (≥99% closure in 14 days) with enhanced re-epithelialization and collagen deposition, without histopathological abnormalities in major organs. These findings underscore Bio-ZnO NPs@PVA-Cs-PMMA nanofibers as an effective biomaterial with strong potential for advanced diabetic wound management.
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