Coatings
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2022
·Vol. 12
·期 9
·1263
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IF 3.236
Honggang Xia,Dongbin Wang,Aixian Tian,Yingde Xu,Hao Gong,Zhaoyang Li,Jun Miao
Medical tools and implants used in clinics can be contaminated with bacteria even with disinfection treatment. To avert this situation, titanium (Ti) plates modified with a MoS2(S)–Ag3PO4coating were designed to killStaphylococcus aureus(S. aureus) andEscherichia coli(E. coli) effectively under near-infrared (NIR) light irradiation. The introduction of Ag3PO4nanoparticles (NPs) reduced the bandgap of MoS2and suppressed the recombination of the photogenerated electron–hole pairs. Therefore, Ti–MoS2(S)–Ag3PO4exhibited a higher photocatalytic performance, leading to the generation of more radical oxygen species (ROS). Furthermore, cooperating with the good photothermal performance of MoS2, the MoS2(S)–Ag3PO4coating exhibited a high antibacterial efficacy of 99.76 ± 0.15% and 99.85 ± 0.09% againstS. aureusandE. coli, respectively, for 15 min in vitro. Moreover, the MoS2(S)–Ag3PO4coating had no apparent toxicity to cells. The proposed strategy may provide new insights for rapidly eradicating bacteria on medical tools and superficial implants.Keywords:bacteria-killing;Ag3PO4;MoS2;photocatalytic;photothermal
研究领域:
材料科学
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微生物学
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医学工程
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DOI
高影响因子
Crystals
·
2023
·Vol. 13
·期 11
·1531
·
IF 2.7
Li Wang,Junbo Wang,Yanfei Fei,Heping Cheng,Hua Pan,Chunfeng Wu
Novel Ag3PO4/Bi2WO6catalysts with enhanced visible-light performance were synthesized using a hydrothermal method and characterized to investigate their morphology, microscopic structure, and binding energies. Photoluminescence spectrum (PL) and electrochemical impedance spectroscopy (EIS) data demonstrate that the formed Ag3PO4/Bi2WO6heterojunction effectively promotes hole (h+)–electron (e−) separation and transfer efficiency, resulting in the enhancement of photocatalytic activity. Ag3PO4/Bi2WO6displays higher photocatalytic activity than pure Bi2WO6or Ag3PO4alone. Photogenerated holes (h+), ·O2−, and ·OH were found to be the main active species for the degradation of malachite green (MG), methylene blue (MB), and Rhodamine B (RhB). The DFT calculation explains the photostability of Ag3PO4/Bi2WO6from the perspective of electronic structure. The bandgap of Ag3PO4/Bi2WO6between the highest occupied molecular orbital (HOMO) and the lowest unoccupied molecular orbital (LUMO) is 1.41 eV, compared with that of Ag3PO4at 0.91 eV and Bi2WO6at 2.59 eV. Ag–O–Bi hybridization and the wide HOMO–LUMO bandgap lead to difficulty in electron transfer. As a consequence, Ag+is difficult to obtain electrons and difficult to convert into Ag0, which makes the catalyst stable.Keywords:Ag3PO4;Bi2WO6;heterojunction;photocatalyst;visible-light-driven
研究领域:
材料科学
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环境科学
·
化学
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DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2015
·
IF 3.368
Chao Jin,Guanglei Liu,Lianhai Zu,Yao Qin,Jinhu Yang
In this article, we report a novel Ag@Ag 3 PO 4 @ZnO ternary heterostructures synthesized through a three-step approach. Firstly, single-crystalline Ag nanorods are fabricated and served as the templates for subsequent Ag 3 PO 4 deposition. Secondly, Ag 3 PO 4 crystals are grown around Ag core nanorods through a solution co-precipitation process, leading to the Ag@Ag 3 PO 4 binary heterostructures. Finally, ZnO nanorod arrays on the surface of the Ag@Ag 3 PO 4 heterostructures are realized via a seeded growth strategy, forming the typical Ag@Ag 3 PO 4 @ZnO ternary heterostructures. The photodegradation of rhodamine B under ultraviolet–visible light irradiation indicates that the Ag@Ag 3 PO 4 @ZnO ternary heterostructures exhibit much higher activities than pure Ag 3 PO 4 and binary heterostructures of Ag@Ag 3 PO 4 . The higher photocatalytic activity of the Ag@Ag 3 PO 4 @ZnO composites may be attributed to the effective photogenerated charge separation at heterointerfaces of Ag/Ag 3 PO 4 and Ag 3 PO 4 /ZnO, and the rapid electron transport along one-dimensional Ag and ZnO nanorods.
研究领域:
材料科学
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环境科学
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产品关联
DOI
PubMed
高影响因子
Asia-Pacific Journal of Chemical Engineering
·
2024
·
IF 1.4
Jianke Tang,Qiaoling Li,Rongqian Meng,Yanfeng Xue,Shengjian Zhang,Shengjuan Shao
Using the prepared Ag 3 PO 4 /WO 3 ·H 2 O composite as the matrix, AgI nanoparticles were introduced onto the surface of Ag 3 PO 4 to construct AgI/Ag 3 PO 4 /WO 3 ·H 2 O ternary heterojunction photocatalysts. The ternary composite photocatalysts exhibited higher photocatalytic degradation activities for rhodamine B (RhB) and tetracycline hydrochloride (TCH) than those of binary Ag 3 PO 4 /WO 3 ·H 2 O and AgI/WO 3 ·H 2 O photocatalysts and individual AgI, Ag 3 PO 4 , and WO 3 ·H 2 O photocatalysts. After exposure to visible light for 12 and 24 min, the removal efficiencies of RhB and TCH by the S2-50% photocatalyst (50% molar percentage of AgI to Ag 3 PO 4 ) reached 98.0% and 85.3%, respectively. After four degradation cycles, the removal efficiency of RhB by S2-50% remained at 93.2%, significantly surpassing that of the Ag 3 PO 4 /WO 3 ·H 2 O photocatalyst. The enhanced photocatalytic performance of the AgI/Ag 3 PO 4 /WO 3 ·H 2 O photocatalyst is primarily attributed to the formation of Z-scheme/conventional Type II heterojunctions, which facilitate spatial separation of the photogenerated electrons and holes while maintaining the strong reductive capabilities of electrons in the AgI conduction band.
研究领域:
材料科学
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环境科学
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产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2018
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IF 2.829
Lianwei Wang,Jianxin Liu,Yawen Wang,Xiaochao Zhang,Donghong Duan,Caimei Fan,Yunfang Wang
A metastable hexagonal WO 3 (h-WO 3 ) was prepared by a hydrothermal reduction method with glycerol and the Ag 3 PO 4 /h-WO 3 composites were synthesized via a precipitation method. Several techniques were employed to characterize the Ag 3 PO 4 /h-WO 3 composites. Compared to the Ag 3 PO 4 /WO 3 photocatalysts, the Ag 3 PO 4 /h-WO 3 photocatalysts exhibited an excellent visible light photocatalytic performance for efficient degradation of methyl orange (MO). The analysis results showed that the favorable photocatalytic performance of the Ag 3 PO 4 /h-WO 3 composites were mainly attributed to the h + and O 2 − generated during the recycles of W 6+ and W 5+ . Furthermore, under the same conditions, the Ag 3 PO 4 /h-WO 3 composites showed better stability than pure Ag 3 PO 4 photocatalyst for degradation of MO, indicating that h-WO 3 played an important role in the process of degradation. Based on the results of trapping experiments and XPS characterization analysis, the photocatalytic mechanism of the Ag 3 PO 4 /h-WO 3 composites were proposed.
研究领域:
材料科学
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环境科学
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DOI
高影响因子
SCIENCE OF THE TOTAL ENVIRONMENT
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2021
·
IF 7.963
Gongduan Fan,Chongguo Chen,Xiaolei Chen,Zhongsheng Li,Shulei Bao,Jing Luo,Dingsheng Tang,Zhongsen Yan
Ultrafiltration is an environmentally friendly water treatment technology, but membrane fouling significantly impacts membrane performance and service life. Photocatalytic modification of membrane is regarded as an effective way for membrane fouling control. In this study, graphite oxide (GO), Ag 3 PO 4 and Ag 3 PO 4 -GO nanomaterials were applied in polyvinylidene fluoride (PVDF) ultrafiltration membranes modification, and the membranes was denoted as P-GO, P-AgP and P-AgP@GO, respectively. Filtration of humic acid (HA) at different operating conditions was adopted in evaluation of membrane performance. Among them, P-AgP@GO had the best permeation, rejection and antifouling performances, and could maintain excellent properties when operation conditions (HA concentration, operation pressure, pH and ionic strength) were changed. Furthermore, the effect of photocatalysis on the self-cleaning performance and its mechanism were revealed. The overall performance of P-AgP@GO could be enhanced by visible light irradiation, and extending the visible illumination time during the filtration was conducive to the reusability.
研究领域:
环境科学
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材料科学
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DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2019
·
IF 5.155
Fanfan Yan,Guowen Shen,Xi Yang,Tianjiao Qi,Jie Sun,Xinghua Li,Mingtao Zhang
Developing of novel chemiresistive gas sensing materials with desired unique gas chemisorption properties is of great important. In this work, motivated by the special electronic structure, Ag 3 PO 4 semiconductor is systematically investigated as gas sensing material for the first time. Encouragingly, the Ag 3 PO 4 nanoparticles based gas sensors exhibit high selectivity to NH 3 at near room temperature of 50 °C with negligible responses to the other gases (including H 2 , CO, ethanol, acetone, NO 2 and SO 2 ). Furthermore, the responses decreased with the increase of operating temperature from 50 to 100 °C, indicating the superior NH 3 sensing activity. The in-situ infrared characterization and theoretical calculations reveal that the lone pair of NH 3 coordinate with the superficial silver atoms of Ag 3 PO 4 accompanied with strong adsorption energy , efficient quantities electron migration and thermodynamic favorable, explained the origin of the high selectivity. Our work indicates that Ag 3 PO 4 based materials are very promising low operating temperature and highly selective NH 3 -sensing materials.
研究领域:
材料科学
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化学
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DOI
高影响因子
JOURNAL OF MEMBRANE SCIENCE
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2021
·
IF 8.742
Xiaorong Meng,Jing Ren,Jiazhi Chen,Jinfeng Song,Huiqi Zheng,Lei Wang,DanXi Huang
Ag 3 PO 4 and AgBr–Ag 3 PO 4 were deposited on the surface of nanofiltration membrane (FT) with tannic acid (TA) and toluene-2,4 diisocyanate (TDI) as functional layers by alternate impregnation method to obtain composite NF membranes (FTA and FTAB) with visible catalytic activity. Under optimal conditions, the catalyst loads on the surfaces of FTA and FTAB were uniform, the initial water contact angle was lower than 28°, the zeta potential was close to −17 mV, the fluxes with FTA and FTAB were respectively 16 and 17.5 L m −2 h −1 (0.4 MPa), and the rejection of Na 2 SO 4 and sulfamethoxazole (SMZ) were more than 75% and 90%, respectively. FTA and FTAB had good photochemical properties, strong absorption of visible light, low electrochemical impedance and sensitive transient photocurrent response. FTA and FTAB with an effective area of 16 cm 2 had a static degradation rate of over 90% for 100 mL of 10 mg L −1 SMZ and ciprofloxacin and can achieve dynamic degradation in NF within 300 min under visible light. FTAB effectively alleviated the photo-corrosion behaviour of FTA, maintained the degradation rate of Congo red above 85% after four cycles and had good stability and anti-pollution self-cleaning performances.
研究领域:
材料科学
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环境科学
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化学工程
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DOI
高影响因子
Nature Communications
·
2022
·Vol. 13
·期 1
·1-8
·
IF 17.694
Ke Jingwen,Zhao Jiankang,Chi Mingfang,Wang Menglin,Kong Xiangdong,Chang Qixuan,Zhou Weiran,Long Chengxuan,Zeng Jie,Geng Zhigang
The electrooxidation of propylene into propylene oxide under ambient conditions represents an attractive approach toward propylene oxide. However, this process suffers from a low yield rate over reported electrocatalysts. In this work, we develop an efficient electrocatalyst of Ag 3 PO 4 for the electrooxidation of propylene into propylene oxide. The Ag 3 PO 4 cubes with (100) facets exhibit the highest yield rate of 5.3 g PO m −2 h −1 at 2.4 V versus reversible hydrogen electrode, which is 1.6 and 2.5 times higher than those over Ag 3 PO 4 rhombic dodecahedra with (110) facets and tetrahedra with (111) facets, respectively. The theoretical calculations reveal that the largest polarization of propylene on Ag 3 PO 4 (100) facets is beneficial to break the symmetric π bonding and facilitate the formation of C-O bond. Meanwhile, Ag 3 PO 4 (100) facets exhibit the lowest adsorption energies of * C 3 H 6 and * OH, inducing the lowest energy barrier of the rate-determining step and thus accounting for the highest catalytic performance.
研究领域:
材料科学
·
电化学
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产品关联
DOI
PubMed
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
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2015
·
IF 7.435
Yue Chang,Kai Yu,Chenxi Zhang,Rui Li,Peiyuan Zhao,Lan-Lan Lou,Shuangxi Liu
Ag 3 PO 4 nanoparticles were firstly deposited into the three-dimensionally ordered macroporous WO 3 (3DOM-WO 3 ) with different pore sizes. The resulted Ag 3 PO 4 /3DOM-WO 3 composites were characterized by XRD, SEM, TEM and DR UV–vis. These composite photocatalysts showed extraordinarily excellent efficiencies in the visible light degradation of organic contaminants and water splitting for oxygen evolution, which were mainly due to the synergic effect of Ag 3 PO 4 and 3DOM-WO 3 as well as the periodic macroporous structure of 3DOM-WO 3 . Especially, the catalyst A5W5 with Ag 3 PO 4 :WO 3 mass ratio of 5:5 exhibited the highest catalytic activity, and complete degradation could be achieved within 4 min for phenol and three typical dyes investigated in this work. In addition, the slow photon effect in Ag 3 PO 4 /3DOM-WO 3 was demonstrated, and the pore size of 3DOM-WO 3 was found to have a significant influence on the catalytic performance. The catalyst A5W5(270) showed notably higher photocatalytic activity than A5W5(150) and A5W5 (420), which was mainly attributed to the exact overlap between the stop-band of 3DOM-WO 3 (270) and the electronic absorption band of Ag 3 PO 4 /3DOM-WO 3 composite. Moreover, these composite catalysts were very stable and could be recycled ten times without any loss in photocatalytic activity for RhB degradation. More excitingly, remarkably improved activity and durability were also obtained over Ag 3 PO 4 /3DOM-WO 3 in water splitting for oxygen evolution. According to the XPS and HRTEM characterizations of used catalyst, the enhanced durability was mainly attributed to the effective transfer of photogenerated electrons from Ag 3 PO 4 to 3DOM-WO 3 .
研究领域:
材料科学
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环境科学
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产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2024
·
IF 5.8
Bing Wang,Yao Liu,Zhuo Li,Hong Hao,YuZhen Zhao,ZeMin He,WenQi Song,EnZhou Liu,Bo Zhou,XiaoXun Ma,Zongcheng Miao
Leveraging the synergistic combination of dipole modulation and localized surface plasmon resonance effects (LSPR) effects offers a promising solution to address the low carrier separation efficiency observed at traditional Type-III heterojunction interfaces. Herein, a derivative of SubPc-4 with a high dipole moment of 7.25 Debye was successfully synthesized by introducing carbonyl functional groups axially into the parent subphthalocyanine. Silver metal was introduced during the preparation of Ag 3 PO 4 through light irradiation, and the organic supramolecule SubPc-4 self-assembled on the Ag 3 PO 4 semiconductor surface via van der Waals forces and π-π stacking interactions, forming a binary heterojunction SubPc-4/Ag 3 PO 4 with LSPR effects. Under 30 minutes of visible light irradiation, the degradation efficiencies of tetracycline and oxytetracycline by the SubPc-4/Ag 3 PO 4 supramolecular nanoarray were 88.29% and 90.20%, respectively. DFT and TDDFT calculations, combined with experimental characterization data, indicate that the LSPR supramolecular array exhibits excellent activity and stability, primarily attributed to the improved carrier separation capability at the SubPc-4/Ag 3 PO 4 interface. This work highlights the potential of combining dipole modulation and LSPR technology to enhance the performance of Type-III heterojunction photocatalysts.
研究领域:
材料科学
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环境科学
·
化学
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DOI
高影响因子
MATERIALS TECHNOLOGY
·
2018
·
IF 1.232
Jie Yang,Hairong Chu,Mingxin Zhu,Haiqin Zhou,Yanhua Xu
In order to solve the disadvantages of most of the photocatalyst, ZnFe2O4 is chosen as the magnetic material and prepared ZnFe2O4/Ag3PO4 composite photocatalysts. ZnFe2O4 is prepared by hydrothermal method, the ZnFe2O4/Ag3PO4 is prepared by precipitation method, which supported Ag3PO4 on the surface of ZnFe2O4. The synthesis method of ZnFe2O4/Ag3PO4 not only simplifies the preparation process, but also improves the photocatalytic activity by suppressing the electron-hole recombination. These methods have important significance for the function alization and stability of photocatalytic materials. Moreover, the ZnFe2O4/Ag3PO4 is characterised by a series of testing means, such as SEM, XRD and EDS, etc. At the same time, this work realizes the effective control of environmental pollutants and lay the foundation for the research of organic pollution remove.
研究领域:
材料科学
·
环境科学
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产品关联
DOI
高影响因子
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