SEPARATION AND PURIFICATION TECHNOLOGY
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2025
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IF 9
Fanjing Wei,Weizhou Jiao,Bo Liu,Hao Qin,Guisheng Qi,Jing Guo,Zhiguo Yuan,Liping Chang,Junjie Liao,Ting Li
Cu-ZnO is a promising sorbent for the removal of thiophene. However, the aggregation and growth of copper grains during the heating reaction leads to the sintering deactivation of the sorbent. Although various strategies have been proposed to introduce supports to mitigate these defects, the impact of supports on the desulfurization performance of sorbent remains poorly understood. In this study, Cu-ZnO/Al 2 O 3 sorbents were synthesized with excellent performance by incorporating Al 2 O 3 (derived from Al(NO 3 ) 3 , γ-Al 2 O 3 and AlOOH as aluminum sources) using co-precipitation and fractional precipitation methods. The thiophene removal evaluation was conducted in a fixed bed reactor. The results indicates that the breakthrough adsorption capacity for thiophene ( Q b-thiophene ) of sorbent synthesized using γ-Al 2 O 3 and AlOOH is approximately 25 % higher than that of those synthesized with Al(NO 3 ) 3 . In comparison to Al(NO 3 ) 3 , γ-Al 2 O 3 and AlOOH exert less influence on the precipitation and crystallization processes of Cu 2+ and Zn 2+ . Sorbents synthesized with γ-Al 2 O 3 and AlOOH as aluminum sources demonstrate higher copper dispersion, larger specific surface area and smaller grain size, all of which significantly enhance the desulfurization activity of sorbent. Furthermore, the use of γ-Al 2 O 3 and AlOOH as aluminum sources contributes to an increase in ZnO and unsaturated Zn δ+ contents on sorbent surface. This improvement enhances hydrogen storage capacity and promotes hydrogen spillover at the Cu-ZnO interface; additionally, it facilitates both the adsorption activation of thiophene and the stable fixation of sulfur species. These findings provide an important theoretical basis for the design and large-scale application of efficient desulfurization sorbents.
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SENSORS AND ACTUATORS B-CHEMICAL
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2025
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IF 7.7
Ertai Na,Binrong Chen,Xudong Liang,Jiayu Li,Ruiqin Gao,Xu Zou,Guo-Dong Li
n -Butanol, as a typical volatile organic compound, is widely used in the chemical, coating, and daily chemical industries. However, its volatility can lead to deteriorating air quality and health risks, necessitating the development of highly sensing and selective real-time detection sensors. This investigation proposes a synergistic sensitization strategy by modifying ZnO nanosheets with Pd nanoparticles to address the low response and poor selectivity of traditional ZnO semiconductor gas-sensing materials. Experimental results indicate that the 0.25 wt% Pd-ZnO exhibits a response value of 400 for 50 ppm of n -butanol, which is seven times that of pure ZnO, and the detection limit is as low as 0.1 ppm. Combined with density functional theory calculations, we reveal for the first time the synergistic sensing-enhancement mechanism at the Pd-ZnO interface: the Zn sites adsorb the oxygen atoms in n -butanol through bonding interactions, while the Pd nanoparticles can synergistically adsorb the hydrogen atoms in n -butanol, thereby enhancing the specific recognition capability towards n -butanol. This research provides new insights into the sensing enhancement mechanisms of noble metal-modified semiconductors, these insights may be widely applied in the design and synthesis of specific sensing materials, catalytic materials, and adsorption materials.
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JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
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IF 6.3
Boyang Qin,Jiao Chen,Fan Xu,Jinxin Zou,Wenfang Wang,Yu Lv,Luyu Tian,Lan Zhou,Jun Feng
Developing efficient heterojunction structures is of critical importance for boosting solar energy conversion in photocatalysis. Herein, a ZnS-ZnO heterojunction is fabricated via pyrolysis of zeolitic imidazolate framework-8 (ZIF-8) followed by in-situ sulfidation. Due to the formation of heterojunction, the separation efficiency of photogenerated carriers can be efficiently enhanced. As a result, the as-fabricated ZnS-ZnO heterojunction exhibited a H 2 O 2 formation rate of 6.88 mmol g⁻¹ h⁻¹ , which is 3.75-fold that of ZnO. The mechanism revealed that •OH and •O 2 - were active species involved in the photocatalytic H 2 O 2 production process. Moreover, the as-prepared samples have been successfully applied to degrade norfloxacin and exhibited excellent removal efficiency. This work provides an efficient route to develop highly efficient photocatalyst based on metal-organic frameworks (MOF).
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ELECTROANALYSIS
·
2025
·Vol. 37
·期 7
·e70023
·
IF 2.3
Dongxue Sun,Shijie Chen,Jinlong Li,Guozhe Sui,Dongxuan Guo,Ning Liu,Renjiang Lv,Shuang Sui
In this study, ZnO/ZnS/g-C 3 N 4 composite materials were successfully synthesized via a combination of hydrothermal treatment and calcination for the electrochemical detection of ascorbic acid (AA). A systematic experimental design was implemented to evaluate the influence of key parameters, including the amount of ZnS added, the loading ratio of ZnO/ZnS onto g-C 3 N 4 , and the pH conditions during detection, on sensor performance. Comprehensive material characterization was conducted using scanning electron microscopy transmission electron microscopy X-ray diffraction, X-ray photoelectron spectroscopy, and Fourier-transform infrared spectroscopy, providing detailed insights into the composites’ microstructure, crystallinity, elemental composition, and chemical bonding. The sensor exhibited excellent performance for AA detection, with a broad linear detection range of 20–5000 μM, a low detection limit of 1.2 μmol/L (S/N = 3), and high recovery rates between 98.23% and 105.02%, accompanied by low relative standard deviations (1.56–3.12%). Furthermore, application of the sensor in cyclic voltammetry analysis of commercial vitamin C tablets yielded accurate and reliable results, confirming its strong stability, anti-interference capacity, and reproducibility.
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CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Shuyi He,Zheguan Lin,Jie Shi,Linyu Zhou,Qingyan Cui,Tiesen Li,Jiangyong Liu,Yuanyuan Yue
For traditional strategies to construct SO 2 and H 2 O co-resistant systems in low-temperature NH 3 selective catalytic reduction (NH 3 -SCR) catalysts, the primary challenge lies in mitigating the partial loss of redox activity at active sites. Herein, we present an approach to construct a protective system based on interface engineering principles, effectively safeguarding Cu active sites in ZnO/FeCu-SSZ-13 under SO 2 and H 2 O exposure. The core innovation stems from the creation of a strong interface effect originated from Zn-O-Al bonds formed between ZnO and the framework Al on the FeCu-SSZ-13 surface. This interface effect can regulate the electronic structure of Zn O bonds on ZnO component, producing abundant basic sites around the Cu active sites, enabling the preferential adsorption of SO 2 and its oxidation into ZnSO 4 , thereby virtually eliminating the redox ability loss of Cu active sites. As a result, ZnO/FeCu-SSZ-13 achieves exceptional low-temperature NH 3 -SCR performance, maintaining over 90 % NO x conversion even in the presence of SO 2 and H 2 O. Our work opens a new avenue for developing low-temperature NH 3 -SCR catalysts with desired SO 2 and H 2 O resistance, offering valuable insights for advancing catalytic performance in challenging reaction conditions.
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SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
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2025
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IF 4.6
Xinlan Wang,Menghan Qi,Zhengyi Chen,Gongke Li,Huasheng Lai
Long-term adsorption saturation of plasmonic substrate and serious matrix interference are two challenges limiting on-site detection of aquatic products by surface-enhanced Raman scattering (SERS). Herein, an enrichment-sensing strategy was presented for rapid SERS analysis of nitrofurantoin and methylene blue in aquatic products by AgNPs decorated olive-shaped ZnO substrate. The substrate with an enhancement factor of 2.7 × 10 7 , achieved rapid enrichment and SERS sensing of nitrofurantoin and methylene blue in 5 min. The detection limits were 8.9 and 0.46 μg/L for nitrofurantoin and methylene blue, respectively. Signal uniformity was achieved with RSDs below 7.5 % ( n = 31), and batch-to-batch stability showed RSDs below 9.8 % ( n = 7). The substrate exhibited reusability for over 5 cycles and long-term stability over 7 weeks. The enhancement mechanisms were simulated using the finite-difference time-domain method and a charge-transfer model. The strategy was successfully applied for rapid SERS analysis of nitrofurantoin and methylene blue in aquatic products with recoveries of 91.6 %–113.2 % and RSDs of 0.5 %–7.8 % ( n = 3).
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2025
·
IF 8.5
Mojtaba Ranjbar,Masumeh Ahmadpour,Mahmoud Kiani,Mostafa Govahi
The increasing prevalence of antibiotic-resistant bacteria and cancer necessitates the development of novel, targeted therapeutic strategies. This study aimed to develop a multifunctional nanoplatform combining antibacterial and anticancer properties through green synthesis and strategic surface functionalization. Zinc oxide nanoparticles (ZnO NPs) were biosynthesized using Trametes versicolor extract as a reducing and capping agent, then surface-functionalized with chitosan (Cs) for enhanced biocompatibility and conjugated with folic acid (FA) for targeted delivery. The NPs were characterized using multiple analytical techniques and evaluated for antibacterial activity against Gram-positive ( Bacillus subtilis , Staphylococcus aureus ) and Gram-negative ( Escherichia coli ) bacteria. Cytotoxicity was assessed in cancer cells (MDA-MB-231) and normal cells (MCF-10 A), followed by gene expression analysis of key oncogenic and apoptotic markers. Characterization confirmed the formation of crystalline, core-shell structures with successful ligand attachment. Cs-ZnO NPs demonstrated significantly enhanced antibacterial activity against all tested bacterial strains compared to bare ZnO NPs. FA-Cs-ZnO NPs exhibited selective cytotoxicity toward cancer cells while maintaining biocompatibility with normal cells. Gene expression analysis revealed down-regulation of cancer stemness genes ( CD44 , SOX2 ) and proliferation markers ( mTOR , β-catenin ), coupled with up-regulation of the apoptotic marker Caspase 3 . This green-synthesized, dual-functional nanoplatform demonstrates promising potential for combined antibacterial and targeted anticancer therapy, warranting further in vivo evaluation for clinical translation.
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2025
·
IF 8.5
Jiayin Wang,Chongjun Huang,Yilong Tu,Zhanye Chen,Yiqing Zhao,Yu Ke
Carboxymethyl cellulose (CMC) gel is an ideal substrate for supporting sunlight responsive photocatalysts, but the photocatalytic disinfection activity decreased due to the light-shielding effect of the gel. In order to enhance the formation of active oxygen species, polydopamine (PDA) was introduced in CMC gels to function as an intermediate to connect two semiconductors inside the gels via its quinhydrone charge-transfer complexation. CMC/PDA gel with a double-network was formed via chemical crosslinking and reversible hydrogen bonding between prepolymerized PDA and CMC, then Ag/AgCl, ZnO and Ag/AgCl/ZnO photocatalysts were formed in situ in CMC/PDA gel, respectively. Ag/AgCl/ZnO heterojunction loaded composite gel displayed a remarkable photocatalytic degradation activity, with a weight ratio of the degraded methyl orange divided by composite gels up to 0.00090 under sunlight irradiation for 30 min. Ag/AgCl/ZnO loaded gel presented the bactericidal rate of 99.9 % against E. coli and 99.8 % against S. aureus . The inhibition zone of Ag/AgCl/ZnO loaded composite gel with dopamine mass of 100 mg increased under 6 h of sunlight compared with 24 h in dark against both E. coli and S. aureus . The biocompatible Ag/AgCl/ZnO loaded composite gel with pH-responsive swelling property and sunlight-responsive antibacterial activity promised to broaden the application of CMC-based antibacterial gels.
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JOURNAL OF MATERIALS SCIENCE
·
2025
·
IF 3.9
Ren Shike,Wang Yuan,Wang Tengle,He Ge,Yuan Shaojun
The corrosion of magnesium (Mg) alloys is detrimental to marine ships, pipelines, transportation, etc. Although superhydrophobic surfaces can effectively protect against corrosion by maintaining an air gap between the solid structure and corrosive media, their long-term corrosion resistance remains limited due to the intrinsic properties of the base materials. Herein, we developed a novel superhydrophobic composite coating with superior corrosion resistance by spraying a mixture of superhydrophobic particles, hexadecyltrimethoxysilane (HDTMS)-modified ZnO nanosheet-decorated diatomite (ZnO@DME/HDTMS), and epoxy resin (E51) onto the surface of AZ31B Mg alloy. The resulting ZnO@DME/HDTMS composite coating exhibited outstanding stability and retained its superhydrophobicity over a wide temperature range (0–200 °C). Moreover, the coating demonstrated excellent adhesion and mechanical robustness in tape-peeling and friction tests. Compared to coatings without superhydrophobic particles, the ZnO@DME/HDTMS composite coating showed significantly lower corrosion rates and enhanced overall corrosion resistance in a 3.5 wt% NaCl solution, simulating marine environments. This work not only offers a superhydrophobic composite coating for the anticorrosion of Mg alloys in marine environments, but also gives a new strategy for preparing functional coatings via rational design of diatomite with hierarchical structures. Graphical
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JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
·
IF 6.3
Xinyu Wang,Tianren Li,Chunrui Zhao,Zian Fang,Mingyu Li
The selective conversion of peroxymonosulfate (PMS) to singlet oxygen ( 1 O 2 ) critically depends on precise electronic structure engineering of the catalysts. The PMS electron-donating pathway enables 1 O 2 generation, but the high energy barriers associated with the initial intermediate *SO 5 •− formation result in an unsatisfactory 1 O 2 yield. Herein, Co-doped ZnO was designed by calcination of zeolitic imidazolate framework. Co doping significantly improved the visible-light response, enhanced the photogenerated carrier separation and migration of ZnO, and increased the ZnO valence band potential. These effects promoted the electron-donating reaction of PMS to produce 1 O 2 . The optimized Co-ZnO-3/vis/PMS system exhibited a 27.2-fold higher methylene blue degradation rate constant (k = 0.9871 min⁻¹) with 43.7 % total organic carbon removal within 5 min. In addition, the developed 1 O 2 -dominated oxidation system removed 83.1 % of chromaticity, 59.9 % of total phenol, and 24.8 % of chemical oxidation demand from the coking wastewater tailwater. This work provides a pathway for tailoring 1 O 2 -dominated reactive species for contaminant removal, providing a theoretical guideline for the deep treatment of coking wastewater tailwater.
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COLLOIDS AND SURFACES B-BIOINTERFACES
·
2019
·
IF 3.973
Hongjian Wen,Xinhua Zhou,Zhichuan Shen,Zhicheng Peng,Huayao Chen,Li Hao,Hongjun Zhou
Polyethyleneimine (PEI) was immobilized on SBA-15 for obtaining polyethyleneimine-modified silica [email protected] ( [email protected] , [email protected] , and [email protected] ). With the coordination from PEI, zinc ions were impregnated on the [email protected] , and then, Zn 2+ [email protected] were calcined at 550 ℃ to obtain the nano zinc oxide loaded on the mesoporous silica, ZnO-SBA-15s (ZnO-SBA-1.0, ZnO-SBA-1.5, and ZnO-SBA-2.0). The anti-bacterial activity of ZnO-loaded SBA-15 was; thereafter, assessed by the zone of inhibition and enzyme labeling methods. The results confirmed that the coordination ability of the imino groups in PEI helped adsorb more zinc ions during the process of impregnation so that more nano-ZnO could be supported on the surface of SBA-15. The modification did not change the mesostructure of the two-dimensional hexagonal phase and orderliness of SBA-15. At the mass ratio of PEI:SBA-15 = 1.0:1, 1.5:1, and 2.0:1, the concentration of zinc element (wt.%) was measured by inductively coupled plasma optical emission spectrometry as 2.5, 2.56, and 3.5% for ZnO-SBA-1.0, ZnO-SBA-1.5, and ZnO-SBA-2.0, respectively. The size of inhibition of SBA-15, ZnO-SBA-0, ZnO-SBA-1.0, ZnO-SBA-1.5, and ZnO-SBA-2.0 were 0, 1.14 ± 0.01, 2.56 ± 0.01, 2.58 ± 0.01, and 2.69 ± 0.02 cm, respectively. ZnO-SBA-15s suppressed the growth of Escherichia coli compared to blank SBA-15 in a ZnO dose-dependent manner.
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Gels
·
2025
·Vol. 11
·期 12
·977
·
IF 5.3
Ting Yu,Yang Xu,Xinyue Zhang,Chenkai Zhu,Jianfeng Zhao,Yang Yang,Min Jiang
Collagen types I and III are primary structural proteins that maintain human skin integrity, and their ratio is disrupted during aging. In this study, we developed a biomimetic 3D skin model with vascularization potential to evaluate the effects of nano-zinc oxide (nano-ZnO) in a physiologically relevant context. The model used methacrylated recombinant human collagen (RHC-MA) bioinks with tunable collagen I/III ratios that mimic the skin of children and adults. The bioinks exhibited excellent printability and mechanical properties that enabled the 3D bioprinting of full-thickness skin products, including dermal layers with human skin fibroblasts (HSFs) and human umbilical vein endothelial cells (HUVECs), as well as epidermal layers with keratinocytes (KCs). The model recapitulated native skin architecture, and key markers such as keratin 10 (K10), keratin 14 (K14), and cluster of differentiation 31 (CD31) were determined. Quantitative real-time polymerase chain reaction (qRT-PCR) analysis showed that nano-ZnO significantly modulated genes associated with apoptosis, inflammation, and oxidative stress in skin cells.
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