GREEN CHEMISTRY
·
2025
·
IF 9.2
Xueqi Liu,Jingmin Ge,Shiying Li,Huanhuan Yang,Huiwen Tian,Hongpo Liu,Yaxi Li,Xiaoli Zheng,Yapeng Tian,Xinwei Cui,Qun Xu
Identification of the active sites for zinc oxide-derived catalysts and further elucidation of the catalytic mechanism for electrochemical CO2 reduction reaction (CO2RR) are limited by the dynamic structural evolution at real reaction conditions. Herein, we focus on the structural evolution of ZnO-T at the initial stage of CO2RR. ZnO-T undergoes in situ reduction to Zn within dozens of minutes, which is followed by reoxidation of the out layer. As a result, core-shell-like Zn@ZnO-T with controllable Zn-ZnO interfaces and oxygen vacancies is obtained depending on the temperature-controlled annealing and electrochemical pre-treatment. Zn-ZnO interfaces alter the energy band structure of ZnO layer, while oxygen vacancies modify the electron density of Zn sites. Thus, the obtained Zn@ZnO-T improves charge transfer, facilitates CO2 activation, and lowers energy barrier for *COOH and *CO intermediates formation. Expectedly, Zn@ZnO-T demonstrates excellent CO2RR performance for CO production with FE up to 92.1% at −1.2 V (vs. RHE) and a current density of −12.7 mA∙cm−2. In particular, Zn@ZnO-650 delivers a high FECO above 85% over a wide potential range from −1.0 to −1.3V (vs. RHE). This study provides a new compass for mechanistic investigation on relationship between intrinsic structure and catalytic performances, guiding the rational design of high-performance heterogeneous catalysts.
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MICROCHEMICAL JOURNAL
·
2025
·
IF 5.1
Mengfan Hu,Huan Xu,Yihong Li,Ziru Lian
Pectenotoxin2 (PTX2), a lipophilic marine biotoxin produced by several species of dinoflagellates, poses significant ecological risks by adversely affecting the growth and survival of fish and shellfish populations. In this study, a highly selective and sensitive ratiometric fluorescence nanoprobe was developed by molecular imprinting technology based on a photoinduced electron transfer recognition mechanism. Zinc oxide (ZnO) nanorods were employed as responsive fluorophore unites, and carbon dots (CDs) extracted from coffee as internal reference signals. Under optimum condition, increasing concentrations of PTX2 in the detection system led to a remarkable quenching of blue-emitting ZnO fluorescence signal, whereas the reference emission from green-emitting CDs remained unaffected. The constructed nanoprobe exhibited a dynamic linear response to PTX2 in the range of 44–1320 ng L −1 with a limit of detection of 13 ng L −1 . Spiked seawater samples yielded satisfactory recoveries from 95.45 % to 99.55 % with relative standard deviations below 9.30 %. Furthermore, semi-quantitative analysis was achieved by integrating a smartphone-based color recognition application, followed by naked-eye visualization under UV irradiation. The dual-emission imprinted fluorescence nanoprobe demonstrates excellent specificity, high sensitivity, and practical applicability for detection of PTX2 at trace levels in seawater with low cost and fast response.
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2025
·
IF 8.5
Wenfeng Li,Zhengtao Wei,Siquan Wu,Xuliang Lin
In sustainable materials engineering, designing rational and ecologically compatible ultraviolet (UV) protective materials to improve the efficiency of light protection is a major challenge. Sodium lignosulfonate (SL), a renewable biomass derivative possessing inherent UV-blocking and antioxidant properties, has been utilized as a foundational component in this research. Through one-pot synthesis approach, a light-colored sodium lignosulfonate zinc oxide composite (ZnO@SL) was successfully fabricated. The effective incorporation of ZnO within the SL matrix through systematic experimental characterization, while the preservation of the hexagonal wurtzite crystalline structure was concurrently preserved. Superior broadband UV attenuation is observed in the nanocomposite compared to pristine ZnO and SL through UV–visible spectroscopy and in vitro SPF evaluation. Through the complementary mechanisms combining physical scattering and chemical absorption, the excellent photoprotection enhancement is achieved, particularly when integrated with chemical sunscreens octocrylene (Oct) and avobenzone (Avo). The SPF value increases from 8.9 to 98.41 at a 2 wt% composite loading. The preserved π-conjugated system and oxygen-rich functional groups in SL are identified to facilitates charge transfer interactions with organic UV filters. This innovative engineering strategy establishes ZnO@SL as a dual-functional additive for the development of high-performance bio-based photoprotective formulations, offering enhanced light protection while reduced environmental impact.
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PubMed
高影响因子
LANGMUIR
·
2025
·
IF 3.9
Shuo Yang,Kaiyue Li,Wei Feng,Ping Huang,Keyan Liu,Yuquan Zhuo,Wenhui Li,Ziwen Yang,Donglai Han
As the widespread discharge of antibiotics, pesticides, and dyes exacerbates water pollution, the development of efficient photocatalytic materials has become crucial for addressing this challenge. In this study, a new paradigm of n-p-p ternary heterojunction photocatalyst composed of ZnO nanospindle, Ag2CO3, and Ag2O nanoparticles was synthesized via a hydrothermal and coprecipitation method followed by calcination. By adjusting the calcination time, the phase transition from Ag2CO3 to Ag2O was precisely controlled, leading to enhanced charge separation, transition, and improved light absorption properties. The prepared ZnO/Ag2CO3/Ag2O (Z/AC/A) photocatalyst exhibited outstanding photocatalytic performance for the degradation of typical water pollutants, including 2,4-dichlorophenol (2,4-D), tetracycline (TC), and malachite green (MG) under simulated sunlight irradiation. And the photocatalytic efficiencies reached 90.8, 94.8, and 97.4%, respectively, with the ZnO/Ag2CO3/Ag2O photocatalyst, which was calcined at 195 °C for 12 min, abbreviated as Z/AC/A-3, demonstrating the highest activity. Radical scavenging experiments and electron spin resonance (ESR) tests revealed that superoxide radicals (•O2–) serve as the dominant active species, while holes (h+) and hydroxyl radicals (•OH) play secondary roles in the photocatalytic process. Additionally, the photocatalytic degradation mechanism was confirmed to follow a dual Z-scheme charge transfer pathway, which effectively enhanced the charge separation and photocatalytic performance. The photocatalyst also exhibited excellent structural stability and reusability over five consecutive cycles. These results suggest that the Z/AC/A n-p-p ternary heterojunction holds promising potential for practical photocatalytic applications in environmental remediation.
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iScience
·
2025
·
IF 4.1
Yichao Tao,Wenbin Zhuang,Wensi Fan,Longxiang Zhou,Lihong Fan,Huanlong Qin,Yefei Zhu
Recent advancements in sonodynamic therapy (SDT) for cancer treatment have highlighted the potential of enhancing reactive oxygen species (ROS) generation and improving therapeutic outcomes. This study introduces zinc oxide (ZnO) nanorods (NRs) in situ loaded with silver nanoparticles (ZnO@Ag NRs), designed to optimize ROS production under ultrasound irradiation and offer significant advantages in tumor specificity and biosafety. The transmission electron microscopy and elemental mapping confirmed the consistent size and monodispersed Ag nanoparticle for ZnO@Ag NR. Sonodynamic properties showed that ZnO@Ag NRs produce higher singlet oxygen and hydroxyl radicals under ultrasound. In vitro studies demonstrated excellent biocompatibility and enhanced cell-killing effects of ZnO@Ag NRs on CT-26 cells, while in vivo results confirmed its superior anti-tumor efficacy and biosafety. Furthermore, the ZnO@Ag NRs’ antibacterial properties were also confirmed, suggesting additional benefits in treating cancers associated with bacterial infections. Collectively, these findings establish ZnO@Ag NRs as a potent and safe agent for ultrasound-driven cancer therapy.
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CHEMICAL ENGINEERING SCIENCE
·
2025
·
IF 4.3
Jin Li,Yang Wang,Tianxing Wu,Xiujing Xing,Limin Li,Wei Xiong,Hao Li
Electrocatalytic reduction of nitrate for the synthesis of high-value chemical hydroxylamine (NH 2 OH) represents a sustainable pathway that combines the dual functions of green synthesis and wastewater treatment. However, the selective control of the process is extremely challenging, mainly due to the susceptibility of nitrate to over-reduction during the reaction, leading to uncontrolled conversion of the target product NH 2 OH to the thermodynamically stable product ammonia (NH 3 ). In this paper, the Cu-PDA MOF precursor was synthesized using the emulsion method, and ZIF-8 was introduced to form the structure of Cu-PDA@ZIF-8. Subsequently, the nitrogen-carbon-doped Cu-ZnO/N-C catalysts were formed by calcination under N 2 atmosphere. The synthesized catalyst effective improved NH 2 OH selectivity during nitrate reduction. The NH 2 OH yield and FE efficiency of Cu-ZnO/N-C reached 564.97 μmol h −1 mg cat −1 and 46.64 %, respectively, under neutral electrolyte conditions. Cu, as the main component of the catalyst, plays a dominant role in hydroxylamine by electrocatalytic nitrate reduction to promote the reaction in the stage of NO 3 – →*NH 2 OH. Zn, on the other hand, plays a key role in the phase *NH 2 OH → NH 2 OH, selectively generating the product NH 2 OH and blocking the excessive reduction of NH 2 OH to NH 3 . Additionally, this study achieved tandem catalytic selective generation of NH 2 OH at copper and zinc heterogeneous interfaces and offers a potential approach and reference for applications involving the nitrate reduction reaction.
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SENSORS AND ACTUATORS B-CHEMICAL
·
2019
·
IF 6.393
Yan Chen,Yunlei Zhou,Huanshun Yin,Fei Li,Hui Li,Runze Guo,Yihao Han,Shiyun Ai
Histone acetylation is a very important post-transcriptional modification, which is catalyzed by histone acetyltransferase with acetyl group donor of acetyl coenzyme A (Ac-CoA). Abnormal histone acetylation is associated with many diseases, so it is important to develop a sensitive and efficient method for detecting histone acetyltransferase (HAT). In this paper, a simple and sensitive photoelectrochemical biosensor was established for indirect detection of HAT using the acetylation reaction by-product of coenzyme A (CoA) as target molecule. To construct the biosensor, BiOI nanoflower was employed as photoactive material, Fe 3 O 4 -NH 2 and 3-maleimidopropionic acid were used as “bridge” reagents for immobilizing CoA, and ZnO quantum dots were adopted as photocurrent inhibitor. Under optimal experimental conditions, the photocurrent decreased with changing HAT concentration from 0.01 to 500 nM. The linear relationship between the photocurrent and the logarithm value of HAT concentration can be constructed with this concentration range and the detection limit was 3 pM (S/N = 3). The sensor has excellent detection specificity, good stability and reproducibility. Based on the current situation of serious antibiotic contamination, the effect of antibiotics on HAT activity was investigated using this photoelectrochemical biosensor.
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Surfaces and Interfaces
·
2025
·
IF 6.3
Kai Yang,Junhao Wang,Dian Yu,Pengqiuyue Pu,Hang Li,Zihao Chen,Yangyang Tang,Zhao Fang
As mineral resources are developed and exploited, the proportion of low-grade zinc ore increases. The concentrations of F - exceeding the optimal range may pose a risk to zinc hydrometallurgy . In the present research, Al 2 O 3 -ZnO microspheres (AZO) characterized by a substantial specific surface area were synthesized through a hydrothermal-roasting technique and applied in industrial zinc sulphate fluoride removal. The optimal adsorption conditions for AZO and the underlying adsorption mechanism were investigated. The results indicated that the adsorption at 12 g·L -1 dosage, original pH=5.32 of the solution and 323 K for 75 min, when the fluoride concentration was reduced to below 50 mg·L -1 , the fluoride removal percentage reached 73.32 %, and the adsorption capacity was 8.55 mg·g -1 . Kinetic studies revealed that AZO exhibited surface inhomogeneity, functioning as a heterogeneous adsorbent, with the fluoride adsorption process being predominantly chemical in nature. The isotherm model suggested that the removal process was characterized by homogeneous adsorption of a monomolecular layer, with a theoretical maximum adsorption capacity of AZO estimated at 9.479 mg·g -1 . FT-IR and XPS analyses demonstrated that the defluorination process occurs through ion exchange between F - and -OH, as well as the formation of Zn/Al-F complexes. Consequently, AZO present a novel approach for developing an effective adsorbent for defluorination in industrial ZnSO 4 solutions.
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ACS Omega
·
2025
·
IF 4.3
Hao Zhang,Guoyan Liu
Inflammatory bowel disease is an idiopathic chronic inflammatory condition of the gastrointestinal tract, closely associated with autophagy and pyroptosis. Nanoparticles, as small-diameter particles, play a unique role in disease research. In this study, a one-pot method was used to synthesize ZnO@Cu5.4O nanoparticles and characterize them. To simulate the inflammatory process of intestinal epithelial cells, a coculture system of NK cells and NCM460 cells was established. Proteomics and Western blot experiments were used to measure the expression levels of the relevant proteins. Notably, 0.5ZnO@Cu5.4O demonstrated a strong inhibitory effect on GSDMB, an effect not observed with ZnO or Cu5.4O alone. Proteins in the 0.5ZnO@Cu5.4O group were significantly enriched in the autophagy signaling pathway. 0.5ZnO@Cu5.4O was able to significantly promote the expression of IFN-γ, IL-6, TNF-α, and IL-1β in the NCM460 and NK cell coculture system and also exhibited a remarkable inhibitory effect on inflammatory factors and reactive oxygen species. In vivo experiments revealed that the median lethal dose of 0.5ZnO@Cu5.4O was 52.78 mg/kg. Furthermore, 0.5ZnO@Cu5.4O greatly alleviated the symptoms in a DSS-induced inflammatory bowel disease model. After treatment with 0.5ZnO@Cu5.4O, serum levels of IL-6 and TNF-α in mice were significantly reduced. These findings provide new insights into the therapeutic potential of 0.5ZnO@Cu5.4O for IBD.
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2025
·
IF 8.5
Yiyan Jiang,Hongkuo Si,Maolin Chen,Miao Su,Gangqiang Wang,Caiqin Gu,Shujun Zhao,Shuangfei Xiang,Xiangdong Liu,Feiya Fu
Direct fabrication of antimicrobial cellulose filaments by wet spinning remains challenging due to complex nanoparticle synthesis and dispersion issues. To address this, we developed a one-pot in situ synthesis strategy within a cellulose-dissolving alkaline system. In this approach, the hydroxyl and terminal aldehyde groups of cellulose chains facilitate the in-situ formation of antibacterial particles (Ag NPs, ZnO). By modulating the particles composition and coagulation bath, we have produced three structurally distinct antibacterial regenerated cellulose filaments. These are designated as regenerated cellulose filaments contain Ag NPs (ACF), regenerated cellulose filaments contain ZnO particle (ZCF) and regenerated cellulose filaments contain ZnO particle and Ag NPs (AZCF). ACF exhibited a smooth surface with limited silver nanoparticle visibility, ZCF displayed surface roughness due to ZnO particle aggregation, and AZCF maintained surface smoothness with dense, uniform nanoparticle distribution. This phenomenon is attributed to the interactions of Ag NPs and ZnO particles. Based on this interaction, the regenerated cellulose developed in this study exhibit both antimicrobial activity (> 95 % bactericidal rates against both E. coli and S. aureus ) and low cytotoxicity. Mechanistic investigations indicate that its antibacterial effects originated from the synergistic action of reactive oxygen species (ROS) production and regulated metal ion release.
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RSC Advances
·
2015
·Vol. 5
·期 21
·16361-16367
·
IF 3.84
Xiaolong Ren,Pengzhan Ying,Zuobao Yang,Minghui Shang,Huilin Hou,Fengmei Gao
1D large-pore mesoporous ZnO materials have attracted tremendous attention because of their outstanding properties and promising applications in a wide range of fields. In the present work, we report the fabrication of large-pore mesoporous ZnO nanofibers via an improved electrospinning strategy, namely, the foaming-assisted electrospinning technique, combined with subsequent calcination treatment. The as-fabricated large-pore mesoporous nanofibers were systematically characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and Brunauer–Emmett–Teller (BET) specific surface area (SBET). The obtained products possess well-designed 1D mesoporous nanostructure with high purity and homogeneous large pore sizes. It is found that the content of the foaming agent within the solutions plays a crucial role in the formation of large-pore mesoporous ZnO nanofibers, enabling the growth of the fibers in a controlled manner. The resultant large-pore mesoporous nanofibers exhibit excellent photocatalytic activity and significant stability for hydrogen production compared to conventional solid nanofibers. The present work suggests a facile preparation of the large-pore mesoporous ZnO nanofibers, which may open new doors for their potential applications in photocatalysts.
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Journal of Advanced Dielectrics
·
2024
·
IF 2.1
Yao Feng,Jinhua Li,Hao Yan
In this work, a series of BiFeO 3 /ZnO composites with varying molar ratio of BiFeO 3 to ZnO (Bi:Zn = 2.5:1, 5:1, 10:1, 20:1) have been synthesized via a one-step hydrothermal method and evaluated for their efficiency in rhodamine B (RhB) degradation performance. The morphology results reveal that the microsphere-shaped ZnO is dispersed on the surface of the blocky-like BiFeO 3 , with intimate contact between the two phases. It has been found that the maximum piezocatalytic activity could be achieved at BiFeO 3 /ZnO molar ratio of 5:1, with a degradation rate up to 92% for RhB. Compared with pure BiFeO 3 and ZnO, the composites have superior piezocatalytic degradation performance. The reason for the enhanced piezocatalytic dye degradation rate may be that the BiFeO 3 /ZnO composites effectively separate the positive and negative charges to reduce the recombination of positive and negative charges. These active species, such as superoxide radicals ( O 2 • − ) in the process of piezocatalytic, are proved on the active species capture experiments. The BiFeO 3 /ZnO composites have good piezocatalytic degradation performance, which provides an option for collecting vibration energy to degradation dye wastewater in the future.
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