SENSORS AND ACTUATORS B-CHEMICAL
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2014
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IF 3.84
Yuting Wang,Jianmei Xie,Li Tao,Hui Tian,Shi Wang,Hong Ding
A novel nano-Au/MWNTs-ZnO modified screen printed electrode (SPE) was fabricated for directly simultaneous determination of epirubicin (EPI) and methotrexate (MTX) in whole blood samples. Electrochemical performances of the modified electrode were greatly enhanced due to the presence of nano-Au/MWNTs-ZnO nanocomposites. The optimum experimental conditions for the detection were explored, and the currents of EPI and MTX measured by SWV presented a good linear property with the increasing of the concentrations. Under optimized conditions, the linear ranges of EPI and MTX were determined to be 0.005–0.200 μM and 0.02–1.00 μM, with the detection limits of 2.5 nM and 10 nM, respectively. Furthermore, the nano-Au/MWNTs-ZnO SPE was applied for simultaneous determination of EPI and MTX in pharmaceutical injections and diluted human blood samples with wonderful satisfactory results.
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MATERIALS RESEARCH BULLETIN
·
2017
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IF 2.446
Mingxin Chen,Chongzhuo Bao,Tangxiang Cun,Qiang Huang
ZnO nanoparticles supported on hierarchical oligoaniline microstructures were synthesized in one pot at ambient condition. The ZnO/oligoaniline nanocomposites were characterized by SEM, TEM , XRD , FTIR, TG/DTA, and physical adsorption of nitrogen. The adsorption and photocatalytic efficiency of the resulting materials were evaluated for removal of dyes. The adsorption data for dyes removal met pseudo-second-order kinetic model. The role of adsorption on photocatalysis was investigated under different reaction conditions. Simultaneous adsorption and photocatalysis (SAP) emerged enhancing effect on cationic dyes, while equilibrium adsorption followed by photodegradation (EAP) improved the catalytic rate of anionic dye. The apparent first-order model was chosen as kinetic equation to estimate photocatalytic reaction. Under SAP mode, ZnO/oliganiline nanocomposite exhibited a higher catalytic rate compared to pure ZnO nanoparticles for dyes photodegradation. The incorporation of oligianiline support significantly enhanced the photocatalytic efficiency of ZnO nanoparticles.
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INTERNATIONAL JOURNAL OF FOOD SCIENCE AND TECHNOLOGY
·
2017
·Vol. 52
·期 7
·1670-1679
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IF 1.64
Le Zhang,Anjun Liu,Wenhang Wang,Ran Ye,Yaowei Liu,Jindong Xiao,Kun Wang
Summary Microemulsion nanofilms based on fish skin gelatine (FSG) and 3% (w/w, gelatine) ZnO nanoparticles (ZnONP) incorporated with ginger essential oil (GEO) at different concentration (10%, 20%, 40%, 80%, w/w, gelatine) were developed and characterised. Film thickness and elongation increased, while film tensile strength and gel strength decreased as GEO level increased ( P < 0.05). The water vapour permeability was reduced ( P < 0.05) by GEO. Microstructural study revealed a dispersion system with GEO lipid droplet embedded into FSG matrix and some aggregation. The developed films showed strong antibacterial activity against food spoilage bacterial of psychrotrophs, mesophiles and lactobacillus spp. (LAB) in situ , and food pathogenic bacteria of Escherichia coli and Listeria monocytogenes in vitro . Together with the antioxidant activity towards lipid oxidation, the release of total volatile bases nitrogen (TVB-N) was subsequently reduced during fresh meat storage. In conclusion, the incorporation of GEO provided the potential to make FSG-ZnONP films more available for meat storage.
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JOURNAL OF ALLOYS AND COMPOUNDS
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2024
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IF 5.8
Chengmei Sun,Chengcheng Xu,Wenzhen Ren,Fengya Hu,Jun Yuan,Qingru Wang,Yanru Xie,Kai Wang,Dong Zhang
ZnTiO 3 :Eu 3+ ,Mn 4+ phosphors with hexagonal and cubic structure are synthesized by solvothermal method. The structure of ZnTiO 3 depends on precursors and the annealing temperature. Inverse spinel Zn 2 TiO 4 phase reveals the highest thermostability compared with cubic ZnTiO 3 and hexagonal ZnTiO 3 phases. The different phases of ZnTiO 3 crystals exhibit different photoluminescence properties. The forbidden transition of 4 A 2 g → 2 T 2 g for Mn 4+ is observed in Zn 2 TiO 4 and hexagonal ZnTiO 3 (h-ZnTiO 3 ) due to the decreased symmetry. The zero photon line (ZPL) assigned to 2 E g → 4 A 2 g transition of Mn 4+ is absent in all type ZnTiO 3 phases. A sharp emission peak at 714 nm assigned to ν 6 (Stokes emission) mode of Mn 4+ in h-ZnTiO 3 is present when the temperature was below 270 K, and increases sharply in intensity with the temperature decreasing. The similar PL spectra of cubic ZnTiO 3 and Zn 2 TiO 4 co-doped with Eu 3+ and Mn 4+ show a wide emission band composed of Stokes and anti-Stokes modes. The calculated nephelauxetic parameter increases from 0.84 to 1.03 and 1.18 for Mn 4+ in h-ZnTiO 3 , cubic ZnTiO 3 and Zn 2 TiO 4 , respectively, indicating the covalency decreasing, which causes the red shift of ZPL in h-ZnTiO 3 . The Mn 4+ emissions show stronger temperature dependence than that of Eu 3+ , especially for that in h-ZnTiO 3 matrix. Based on the fluorescence intensity ratio between I Eu 3+ and I Mn 4+ , the highest relative temperature sensitivity of 2.46 %K −1 is observed in cubic ZnTiO 3 (c-ZnTiO 3 ) and Zn 2 TiO 4 . Under the excitation at 550 nm, the highest relative sensitivity of 2.9 %K −1 is achieved in c- and h-ZnTiO 3 mixed phases.
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SENSORS AND ACTUATORS B-CHEMICAL
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2024
·
IF 8
Xingyu Kang,Jianhui Lv,Lei Han,Bin Huang,Huizhang Zhao,Dong Wang,Hairui Fang
Nitrogen oxide (NO 2 ) is common by-products of industrial production, posing significant health risks to workers. Therefore, real-time monitoring of NO 2 is crucial. In this study, innovative In 2 O 3 -ZnO nano-materials were prepared by combining In 2 O 3 with ZIF-8 via electrospinning, for detecting trace amounts of NO 2 at room temperature (RT). Compared to pure In 2 O 3 , the In 2 O 3 -ZnO nano-materials (V2) with a 10 % weight ratio of ZIF-8 exhibited a significantly higher response (389.99) and a faster response time (16.9 s) to NO 2 under ultraviolet (UV) irradiation at RT. The superior gas sensing performance of the V2 nano-materials is attributed to the formation of n-n heterojunctions, enhanced optical absorption, increased oxygen vacancy ratio, and excellent dispersion among the nano-materials. The results demonstrate that V2 nano-materials can detect NO 2 at parts-per-billion (ppb) levels at RT, making them suitable for monitoring trace amounts of NO 2 in open environments. Furthermore, a portable real-time NO 2 monitoring device was constructed using V2 as the sensing material, an LM358-based amplifier circuit for data acquisition, an STM32F103C8T6 microcontroller as the main control unit, and a buzzer as an alarm device. Compared to devices using a helical Ni-Cr wire as an indirect heat source, this integrated NO 2 detection device offers real-time alarms with lower energy consumption. This application not only enhances worker health and safety in industrial environments but also demonstrates higher energy efficiency in practical application.
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ACTA PHYSICO-CHIMICA SINICA
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2025
·
IF 13.5
Yi Yang,Xin Zhou,Miaoli Gu,Bei Cheng,Zhen Wu,Jianjun Zhang
Photocatalytic hydrogen peroxide (H 2 O 2 ) production is a crucial process for clean energy conversion, involving the reduction of O 2 through two electrons. However, this process is often hampered by the sluggish water oxidation involving the photogenerated holes. To address this challenge, we have constructed a dual-functional S-scheme ZnO/CdIn 2 S 4 heterojunction systerm coupling the H 2 O 2 generation with a value-added benzylamine (BA) oxidation reaction. In this dual-functional photocatalytic system, photogenerated electrons in CdIn 2 S 4 efficiently reduce O 2 to produce H 2 O 2 , while photogenerated holes in ZnO selectively oxidize BA to N-benzylidenebenzylamine. Leveraging the advantages of the S-scheme heterojunction, the optimized ZnO/CdIn 2 S 4 photocatalyst displays an enhanced H 2 O 2 production rate (386 μmol·L −1 ·h −1 ) and BA oxidation fraction (81%) than pure ZnO or CdIn 2 S 4 . Femtosecond transient absorption (fs-TA) spectroscopy confirm the ultrafast S-scheme electron transfer from the ZnO conduction band (CB) to the CdIn 2 S 4 valence band (VB) upon photoexcitation of the ZnO/CdIn 2 S 4 composite. Besides, timely depletion of VB holes in ZnO and CB electrons in CdIn 2 S 4 can accelerate the interfacial electron transfer in the ZnO/CdIn 2 S 4 S-scheme heterojunction. The innovative design of the ZnO/CdIn 2 S 4 S-scheme photocatalyst provides new insights for developing efficient dual-functional heterojunction photocatalytic systems and introduces a novel method for studying S-scheme heterojunctions using fs-TA spectroscopy.
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2025
·
IF 8.5
Mengmeng Zhang,Zhihui Sui,Lijian Sun,Qi Zhang,Lihua Deng,Longyu He,Bingchi Zhang,Bin Zu
Multifunctional cellulose-based textiles with high strength, anti-UV, antibacterial and hydrophobic properties are desirable in diversified applications. However, it is still a challenge to manufacture such multifunctional cellulose-based textiles. In this study, a multifunctional waterborne polyurethane (WPU) coating decorated with nano-ZnO and perfluorooctanol (F13) was prepared, and then applied to hemp cellulose fabric finishing. In order to disperse and incorporate nano-ZnO into WPU matrix, nano-ZnO was first modified with γ-aminopropyltriethoxysilane (KH-550). Subsequently, KH-550 modified nano-ZnO and F13 were simultaneously introduced into the WPU skeleton. The structural characteristics of nano-ZnO and F13-decorated WPU (ZnO/FWPU) were studied. Influences of nano-ZnO content on the hydrophobic, antibacterial, and UV resistant of ZnO/FWPU treated hemp cellulose fabric were systematically investigated. The results show that the water contact angle (WCA) of the coated fabric increased from 0° to 135.6°, and it has good-staining ability. Encouragingly, the ZnO/FWPU coating is universal and can improve the hydrophobicity of materials including cotton fabric, polyester cotton, paper, hardboard, and balsa wood, with WCA ranging from 119.05° to 133.84°. Meanwhile, the coated fabric are effective against S. aureus and E. coli , and antibacterial rate was 99.5 % and 99.7 %, respectively. Moreover, the fabric has an excellent anti-UV properties with UPF 50+. The mechanical strength of the fabric is significantly improved, and the breaking strength is increased by 27 % (warp) and 29 % (weft). After repeated washing, the fabric still maintains high mechanical, antibacterial, and hydrophobic properties. This study offers a new opportunity for integrating multiple functions onto a hemp cellulose fabric for multitask requirements.
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PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2024
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IF 8.1
Qunying Sun,Qianxiang Xiao,Qixu Chen,Wen He,Feng He,Hongqing Wang
Efficient and stable photocatalytic materials are urgently needed for the photo-reduction of uranium in wastewater treatment without the addition of external sacrificial agents under air conditions. Herein, we designed and synthesized 1 T@2H MoS 2 QDs (MSQ) modified oxygen-rich defective ZnO photocatalysts 1 T@2H MoS 2 QDs/OV-ZnO (MSQVZO) and systematically investigated its photocatalytic U(VI) activity in various matrices, which exhibited 97 % removal efficiency of uranium after 40 min of visible light irradiation under aerobic conditions, and the order of photocatalytic activity was MSQVZO > OV-ZnO > ZnO. XRD, ESR, XPS, and UV–vis were used for the characterization of the materials. In addition, it was argued using DFT analysis that the introduction of oxygen defects drove the OV-ZnO to interact with the intermediates of the oxygen evolution reaction (OER) reaction more readily than the ZnO, thus improving the activity of the OV-ZnO-based catalysts. More importantly, a new mechanism for photo-reduction of U(VI) was established. It provides an effective strategy for the photo-reduction of U(VI) without a sacrificial agent.
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LANGMUIR
·
2025
·
IF 3.9
Yiming Wu,Jing Yang,Ruifeng Zhang,Hongji Li,Ruihua Mu,Yamei Zhao
Polyvinylidene fluoride (PVDF) membranes represent a potential technology for the in-depth treatment of organic dye-containing wastewater. Nevertheless, the intractable membrane fouling and the limited versatility have significantly constrained its applications. Herein, through the nonsolvent-induced phase inversion method, we have successfully fabricated the PDA@MgO/PVDF and PDA@ZnO/PVDF membranes, which are modified by the synergistic action of MgO or ZnO nanoparticles with polydopamine (PDA), respectively. Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), scanning electron microscopy (SEM), as well as the analyses of pore structure, contact angle, and surface free energy, were utilized to characterize the hybrid membranes. The results demonstrate that the modification of PDA@MgO and PDA@ZnO can enhance the hydrophilicity, pure flux, dye rejection, and pollution resistance of PVDF membranes. The enhanced hydrophilicity of the modified membranes results from the increase in surface free energy and its polar component term. Comparatively, the PDA@ZnO/PVDF membrane exhibits a smaller contact angle (69°) and a higher pure water flux (378.63 L/m2·h·bar), whereas the PDA@MgO/PVDF membrane possesses greater mechanical strength and better antifouling performance. The PDA@MgO/PVDF membrane can achieve a rejection rate of 94.6% for disperse deep blue 79, and the flux recovery rate can reach approximately 82%. This research offers novel insights into the application of PVDF membranes for the treatment of organic dye-containing wastewater.
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高影响因子
APPLIED SURFACE SCIENCE
·
2024
·
IF 6.3
Ziyu Jia,Yuming Yang,Chunwei Yang,Dong Wang
Aniline is highly toxic and difficult to degrade by conventional biological treatment processes. Thus, more efficient processing technology needs to be developed. Photocatalysis coupling catalytic ozonation (PCO) could be a solution. In this study, a green precipitation method was used to synthesize a γ-Fe 2 O 3 /ZnO@CNT catalyst, which exhibits high activity for aniline PCO degradation and strong magnetic properties for rapid separation. Under the optimal conditions, the aniline removal rate reached 93.5%. After 5 reaction cycles, the γ-Fe 2 O 3 /ZnO@CNT catalysts can be separated easily with a magnet, and a 91% aniline removal rate can be maintained. Furthermore, there are at least 4 kinds of advanced oxidation processes (AOPs) in this system, i.e., (1) photocatalytic oxidation; (2) catalytic ozonation; (3) photocatalytic ozone; and (4) Fenton oxidation. Thus, a novel stable and magnetically separable catalyst was developed, and new insight were provided for the role of PCO processes in the treatment of aniline.
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CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Dingzhou Xiang,Shiqi Zhang,Guanghui Cheng,Lu Li,Xing Wang,Chenghuan Zhong,Shan Gao
Direct photocatalytic methane conversion into high-value liquid oxygenates has garnered significant research interest under mild conditions, yet a critical challenge is to obtain an excellent formaldehyde yield rate and selectivity only using H 2 O as the oxidant. Herein, a 2D g-C 3 N 4 nanosheet/ 0D ZnO quantum dots (ZCN) Z -scheme heterojunction was established by the self-assembly strategy to acquire an outstanding C1 liquid oxygenates (methanol and formaldehyde) with productivity of 908.13 μmol g cat −1 h −1 under ambient temperature and pressure without extra oxidant. Notably, the HCHO yield rate could be reached to 706.32 μmol g cat −1 h −1 with a selectivity of 69 %. The confinement effect of ZnO quantum dots (ZnO QDs) broadens the bandgap to some extent, making the catalyst possess a strong oxidation potential that could oxidize H 2 O to generate enough hydroxyl radical ( · OH) for activating CH 4 . Meanwhile, the ZCN Z -scheme heterostructure improves the migration and transport efficiency of photoexcitons but also enhances the activation and adsorption of CH 4. In situ experiments verify that the ZCN heterostructure accelerates the generation of methyl radical ( · CH 3 ) and · OH. This work paves a new way toward rationally constructing photocatalysts for CH 4 conversion into desirable chemical products under ambient conditions.
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2025
·
IF 5.4
Shuqi Guo,Xueze Zhang,Shangxuan Li,Huifang Wang,Xianghua Gao,Baolong Niu,Wenfeng Li
Quercetin (Que) is a naturally occurring bioactive compound with various potential health benefits, but its low stability and low bioaccessibility limit its application in functional foods. Therefore, there is an urgent need to prepare a novel composite hydrogel bead with efficient and controlled release. Specifically, porous starch (PS) was first prepared by enzymatic hydrolysis to increase the specific surface area and thus enhance the adsorption rate of Que. Scanning electron microscopy confirmed the formation of the PS and the adsorption of Que. The maximum swelling properties of carboxymethylcellulose-porous starch composite hydrogel beads (CQPZ) were reduced by adding different amounts of zinc oxide to achieve slow release. The results showed that the higher the amount of zinc oxide, the stronger the slow-release performance, while the lower the drug loading capacity. To obtain composite hydrogel beads with both low swelling and high drug-carrying properties, bilayer gel beads (CQPZ/CS) were prepared by electrostatic self-assembly of carboxymethyl cellulose and chitosan. The experimental results showed that the drug loading was significantly increased by nearly 2-fold while enhancing the slow-release performance. In addition, the CQPZ/CS composite hydrogel beads enhanced the stability of Que under light and heat conditions, and the DPPH radical scavenging rate after UV irradiation was still greater than 75%, which was much higher than that of free quercetin (31.08%). In conclusion, the prepared hydrogel beads are a promising delivery system for bioactive compounds.
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