SENSORS AND ACTUATORS B-CHEMICAL
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2022
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IF 9.221
Qingqing Zhou,Haodong Chen,Kun Wang,Hanli Zhang,Lindan Pan,Hailing Zheng,Yang Zhou,Zhiwen Hu,Zhiqin Peng,Junmin Wan,Bing Wang
Ancient silk has important historical, artistic, and scientific value, and its origin and spread have always been a research hotspot. However, traditional analytical methods have encountered great challenges in the analysis of ancient silk microtraces due to the problems of large sample consumption, serious contamination, and degradation. To overcome this problem, a taxonomically specific anti-fibroin monoclonal antibody was designed and successfully prepared by animal immunization, and a novel photoelectrochemical immunosensor based on the antibody and ZnO nanowires array was constructed for the first time. This photoelectrochemical immunosensor possessed a detection limit as low as 0.56 ng mL −1 and a linear range from 1 to 1000 ng mL −1 , showing great potential in the ultrasensitive detection of silk trace. In addition, the elaborate immunosensor demonstrated preeminent performances in the specificity, stability, and reproducibility, especially in the qualitative and quantitative detection of soil samples extracted from Sanxingdui archeological sites. Therefore, the proposed method not only provides a powerful analytical tool for exploring the origin and spread of ancient silk but also provides a reference for the study of other types of protein artifacts.
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高影响因子
Journal of Environmental Chemical Engineering
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2022
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IF 7.968
Jie Tian,Junyan Wei,Yeping Liang,Ruixue Guo,Beibei Li,Ruijuan Qu,Dongmei Zhou,Zunyao Wang,Ping Sun
This study aimed to investigate the catalytic performance of Fe 3 O 4 /ZnO in the ozonation of 1-hexyl-3-methyl imidazolium bromide ([HMIM]Br). The Fe 3 O 4 /ZnO composite was prepared by a quick and convenient two-step coprecipitation method, and the optimum mass ratio of Fe 3 O 4 :ZnO was determined as 1:8. The structure, surface morphology, and chemical composition of the Fe 3 O 4 /ZnO composites were studied by characterization methods. The degradation efficiency of [HMIM]Br reached 96% in 5 min in catalytic ozonation with the Fe 3 O 4 /ZnO composite, an increase of 20% compared with ozonation alone. Moreover, the pseudo-first-order rate constant was 1.5 times higher than ozonation alone. With the increase in the catalyst dosage, the degradation efficiency of [HMIM]Br first improved and then decreased, and the optimum dosage was 0.25 g/L. The increase in pH value and the introduction of Cu 2+ effectively promoted the catalytic ozonation of [HMIM]Br with Fe 3 O 4 /ZnO, while the reducing inorganic ions inhibited the ozonation reaction. Different water matrices had little influence on the catalytic performance of Fe 3 O 4 /ZnO. Radical scavenging and EPR experiments showed that hydroxyl radicals (•OH), superoxide radicals (O 2 •- ) and singlet oxygen ( 1 O 2 ) were the main active species in this system. Meanwhile, product identification showed that the degradation of [HMIM]Br mainly included hydroxylation, imidazole ring cleavage and bond cleavage. Toxicity prediction illustrated that the catalytic ozonation of [HMIM]Br could effectively reduce its toxicity. The efficiency, toxicity, reusability, and stability experiments suggested that the developed catalyst, Fe 3 O 4 /ZnO composite, had promising prospects in catalytic ozonation.
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INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
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2019
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IF 3.375
Hao Lyu,Zechao He,Yau Kei Chan,Xianhua He,Yue Yu,Yi Deng
Zinc (Zn) material has recently become a rising biodegradable metal in orthopedic applications owing to its critical physiological functions and degradation characteristics. However, the unsatisfactory cytocompatibility due to the locally high concentration of Zn ions liberated during degradation accompanied with a lack of antibacterial property and osteogenesis severely obstruct the clinical adoption of pure Zn implants. To address these challenges, we construct hierarchical ZnO nanotube/graphene oxide (GO) nanostructures (GO-An-Zn) on the pure Zn substrates via anodic oxidation followed by silk fibroin/GO self-assembly in the present study. The resultant surface displays superior bacteria-killing performances against both Gram-negative and Gram-positive bacteria. Moreover, osteoblasts on the dexamethasone (Dex)-laden hierarchical microstructured/nanostructured Zn (GO-Dex-An-Zn) show the enhanced cell compatibility and osteogenicity, outperforming these on pure Zn substrates. It is mainly attributed to the synergistic delivery of Zn ions and Dex from bulk materials during degradation, forming a favorable microenvironment for cell survival and bone tissue remodeling. Accordingly, such work provides a novel solution to simultaneously improve the bactericidal activity and osteogenic potential of Zn-based biomaterials, bode well for their orthopedic use.
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高影响因子
Journal of Environmental Chemical Engineering
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2023
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IF 7.7
Yulu Shi,Dong Wang,Xuefen Wang,Zheyi Meng
In this work, flexible and hierarchical structured MnO 2 -ZnO/SiO 2 nanofibrous membranes (NFMs) as easily recyclable Fenton-like catalysts have been developed utilizing the combination of electrospinning and a hydrothermal growth method. By capitalizing the advantages of the high specific surface area and synergism effects of bimetallic oxides, the optimal membranes exhibited prominent catalytic activity in the degradation of malachite green oxalate (MGO). Specifically, within a mere 15 min at an initial pH, 98.1% of MGO was degraded, demonstrating a remarkable degradation rate of 0.2744 min −1 . Free radical scavenging experiments and Electron Paramagnetic Resonance studies conclusively identified superoxide radical species (O 2 •– ) as the main reactive species for the degradation of MGO. Furthermore, the resultant flexible membranes displayed excellent stability and could be effortlessly recycled after catalytic process, surpassing the performance of conventional powdery Fenton-like catalysts. Notably, the resultant membranes could be used for dynamic catalyst for MGO removal and could efficiently treat 418 mL MGO with a flux of 5650.5 L m −2 h −1 . The successful fabrication of these MnO 2 -ZnO/SiO 2 membranes paves the way for the development of more efficient and applicable Fenton-like catalytic materials for water treatments and offers more inspirations for innovative designs of fiber-based or membrane-based catalysts.
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高影响因子
MOLECULES
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2023
·Vol. 28
·期 20
·7232
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IF 4.6
Ruichun Nan,Shurui Liu,Mengwan Zhai,Mengzhen Zhu,Xiaodong Sun,Yisong Chen,Qiangqiang Pang,Jingtao Zhang
In this study, Cu-doped ZnO was prepared via the facile one-pot solvothermal approach. The structure and composition of the synthesized samples were characterized by XRD (X-ray diffraction), TEM (transmission electron microscopy), and XPS (X-ray photoelectron spectroscopy) analyses, revealing that the synthesized samples consisted of Cu-doped ZnO nanoparticles. Ultraviolet–visible (UV-vis) spectroscopy analysis showed that Cu-doping significantly improves the visible light absorption properties of ZnO. The photocatalytic capacity of the synthesized samples was tested via the disinfection ofEscherichia coli, with the Cu-ZnO presenting enhanced disinfection compared to pure ZnO. Of the synthesized materials, 7% Cu-ZnO exhibited the best photocatalytic performance, for which the size was ~9 nm. The photocurrent density of the 7% Cu-ZnO samples was also significantly higher than that of pure ZnO. The antifungal activity for 7% Cu-ZnO was also tested on the pathogenic fungi ofFusarium graminearum. The macroconidia ofF. graminearumwas treated with 7% Cu-ZnO photocatalyst for 5 h, resulting in a three order of magnitude reduction at a concentration of 105CFU/mL. Fluorescence staining tests were used to verify the survival of macroconidia before and after photocatalytic treatment. ICP-MS was used to confirm that Cu-ZnO met national standards for cu ion precipitation, indicating that Cu-ZnO are environmentally friendly materials.Keywords:Cu-doping;nanoparticles;semiconductors;antifungal activity;safety assessment;Zinc oxide
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PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2023
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IF 15.1
Ruixiang Wang,Huanhuan Dong,Xueyi Li,Li Zhou,Wenkun Zhu,Tao Chen
Semiconductor-based photocatalytic materials have been widely used in photoreduction uranium systems. However, semiconductor-based materials still have some problems such as difficult recovery, few adsorption sites, poor stability, and large bandgap width. Based on this, we constructed 3D porous konjac glucomannan-derived carbon-encapsulated carbon-doped ZnO carbon aerogels (KC@C-ZnO-X) for U(VI) adsorption-photoreduction based on the gelling properties of Konjac glucomannan (KGM) and the unique structure of ZIF-8. The KC@C-ZnO-1.5 achieved the U(VI) removal rate of 93.5 % in 200 mg/L U(VI) solution and greatly weakened the photocorrosion of ZnO. And then the KC@C-ZnO-1.5 continued to maintain an outstanding U(VI) removal rate of 92.9 % after five cycles. Further characterization tests found that the role of 3D KGM-derived carbon aerogel (KC) encapsulation improves the stability of ZnO and carbon doping reduces the band gap width of ZnO. The mechanistic study showed that KC as the “skeleton” encapsulating C-ZnO not only enabled the catalyst to be recycled but also enhanced the photostability of ZnO. The synergistic effect of the C-ZnO and KC promoted photogenerated charge separation and facilitated the generation of ·O 2 − , leading to the further formation of the stable (UO 3 ·NH 3 ·H 2 O) crystalline phase.
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2023
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IF 5.2
Chun Zhang,Jing Zhou,Min Nie,Qi Wang,Fang Yang,Rui Han
Basalt fiber (BF) as a promising reinforcing material, is used widely to prepare polymer composite , but poor interfacial interaction with polymer matrix deteriorates the reinforcement effect. Here, a biomimetic “root-like” BF with laterally-grown zinc oxide (ZnO) nanowires was prepared via dopamine surface modification and two-step hydrothermal method . By virtue of the coordination of catechol groups with Zn 2+ ions, the polydopamine coating layer provided the strong affinity with the ZnO seeds layer and facilitated the direction growth of ZnO nanowires, with firm immobilization on the BF surface. Accordingly, the robust interlocking interface was successfully constructed in the root-like BF/polymer composite by penetrating laterally-grown ZnO nanowires into polymer matrix, greatly reinforcing the interfacial adhesion. Compared to conventional surface chemical treatment only suitable for a single specific system, the interfacial interlocking effect mainly depended on the formation of the laterally-grown ZnO nanowires, rather than intrinsic properties of polymer components, so as to be applied to a wide range of polymer composites. This can be exemplified by 265% and 197% increases in interfacial strength of the root-like BF-filled polypropylene (PP) and polydimethylsiloxane (PDMS) composite over that of the corresponding pristine BF ones.
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ACS Applied Nano Materials
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2023
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IF 5.9
Jin-Bo Cheng,Li-Peng Meng,Hai-Bo Zhao,Chun-Xia Zhao,Hui Li,Yuan-Peng Wu
Composite materials made of transition metals/metallic oxides and porous carbon stemming from metal–organic frameworks (MOFs) have drawn tremendous attention within the field of electromagnetic wave absorption. However, the fabrication of most MOFs involves the use of toxic solvents and specially synthesized organic ligands; furthermore, high-pressure hydrothermal processes are commonly employed and are environmentally unfriendly and unsustainable. Herein, a Zn metal–polyphenol network (MPN) was developed by replacing organic ligands with biomass tannic acid at room temperature by using water and ethanol as solvents. The resulting MPN exhibited a microstructure and performance similar to those of MOFs. Subsequently, in situ pyrolysis of the Zn–tannic acid network was conducted to prepare porous carbon/ZnO (PC/ZnO) composites. The PC/ZnO composite pyrolyzed at 700 °C showed a strong reflection loss of −57.8 dB at a matching thickness of 3.5 mm, and a wide effective absorption bandwidth of 5.5 GHz was attained at 2.5 mm. The excellent electromagnetic wave absorption performance can be ascribed to the occurrence of multiple scattering events due to the porous structure, the moderate resistance loss of the porous carbon network, and the strong dipolar and interfacial polarization losses due to the ZnO nanoparticles and defect carbon. This study provides a convenient, environmentally friendly, sustainable, and tunable approach to prepare excellent broadband electromagnetic wave absorbers.
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高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2023
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IF 19
Yaru Li,Yong Zhang,Peide Zhu,Jingbai Li,Jiawen Wu,Jiyao Zhang,Xianyong Zhou,Zhengyan Jiang,Xingzhu Wang,Baomin Xu
CsPbI 2 Br perovskite solar cells (PSCs) have garnered significant attention owing to their remarkable thermal stability and desirable bandgap. However, CsPbI 2 Br-based devices still face critical challenges, particularly at the interfaces between the active layer and adjacent components. In this study, a multifunctional ZnO composition has developed as the electron transporting layer (ETL) for CsPbI 2 Br PSCs, enabling simultaneous efficient charge extraction and passivation of buried interface defects in CsPbI 2 Br. The nanocomposite, composed of PbCl 2 -modified ZnO (PbCl 2 -ZnO), facilitates the regulation of bandgap and conduction band to align the energy level of ETL and CsPbI 2 Br. Additionally, the residual PbCl 2 at the buried interface of the perovskite incorporates into the perovskite lattice, reducing I defect and thus improving film quality. The improved energy level alignment at the ETL/CsPbI 2 Br interface and the suppressed I defect-induced carrier nonradiative recombination result in a remarkable reduction in energy loss from 0.73 to 0.52 eV. Finally, the PbCl 2 -ZnO hybrid nanocomposite ETL significantly enhances the efficiency of CsPbI 2 Br PSCs, increasing it from 14.15% to 17.46%, representing one of the highest reported power conversion efficiency (PCE) values for CsPbI 2 Br PSCs. These findings demonstrate the potential of PbCl 2 -ZnO hybrid nanocomposite as an effective ETL for CsPbI 2 Br PSCs.
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INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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2023
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IF 7.2
Yanhong Zhang,Hu Bai,Jiaming Chu,Haiyang Lan,Qi Zhou,Zixian Wang,Weitao Jin,Juan Zhou
A catalyst layer is coated on the fuel electrode in a proton-conducting solid oxide electrolysis cell reactor, which can optimize electrochemical performance and expand the application range of the reactor. In this work, CuO–ZnO catalyst is prepared by oxalate co-precipitation method and combined with a single cell to obtain a reactor with the structure of La 0.6 Sr 0.4 Co 0.2 Fe 0.8 O 3-δ (LSCF) ǀ BaZr 0.1 Ce 0.7 Y 0.1 Yb 0.1 O 3-δ (BZCYYb) ǀ NiO-BZCYYb (active layer) ǀ NiO-BZCYYb (support layer) | CuO–ZnO (catalyst layer). The electrolysis current density of this reactor with humid air as oxidant and 20%CO 2 –80%H 2 as fuel is 2751 mA cm −2 under 1.3 V at 750 °C. It operates steadily for 138 h under 1.3 V electrolysis at 650 °C, which is better than the reactor without a catalyst layer under this condition. Additionally, CO and CH 4 are detected in the exhaust gas on the fuel electrode side, and the CO selectivity reaches over 90% at 750-550 °C.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2023
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IF 9.9
Dong Wang,Qian Fu,Jiayi Tian,Hongmiao Zhou,Rui Liu,Difu Zhan,Zhuo Peng,Changcun Han
Zinc oxide (ZnO) has a broad range of applications in piezo-photoelectrochemical water splitting. However, the narrow light absorption range and high photogenerated carrier recombination efficiency make ZnO somewhat limited in applying piezo-photoelectrochemical water splitting. Heterogeneous structure construction is a superior handle to these two drawbacks. Herein, few-layer molybdenum disulfide (MoS 2 ) nanospheres are compounded on ZnO nanosheets (NSs) to form a dual-piezoelectric-material heterojunction of ZnO NSs/MoS 2 . The photocurrent density of ZnO NSs/MoS 2 reaches 0.68 mA/cm 2 at 1.23 V vs. RHE under ultrasonic vibrations. It is 2.4 times higher than that of ZnO NSs under ultrasonic vibrations. The efficient piezo-photoelectrochemical performance is attributed to increased absorption range and polarization field. On the one hand, the narrow band gap of the few-layer MoS 2 widens the light absorption range of ZnO. On the other hand, compared to pure ZnO NSs, ZnO NSs/MoS 2 has an enhanced polarization field under ultrasonic vibrations due to the piezoelectric properties of dual piezoelectric materials, which dramatically accelerates the electron transfer and suppresses the recombination of between electrons and holes. This work provides a new approach to constructing photoelectrodes with effective piezoelectric photocatalytic properties.
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高影响因子
CATALYSIS COMMUNICATIONS
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2020
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IF 3.612
Haohua Jin,Jiasheng Wang,Wan-Hui Wang,Yang Li,Ming Bao
The utilization of CO 2 is nowadays important for alleviating energy and environmental crisis. Herein, amino-functionalization was used to improve the performance of SiO 2 -supported Ni-ZnO nanocatalyst for the hydrogenation of sodium bicarbonate to formic acid . The activity, stability and retainability were all improved upon the introduction of amino group. A formic acid yield of 30.4% was obtained from sodium bicarbonate when passing 5 vol% H 2 /N 2 at 70 °C for 4.5 h, which is considered among the best catalytic performances reported under ambient pressure. The simultaneous improvement of the three aspects through a simple operation is attractive in the field of catalysis.
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