CHEMICAL ENGINEERING JOURNAL
·
2019
·
IF 8.355
Xiangyu Zhang,Chao Zhang,Yongqiang Yang,Hongyu zhang,Xiaobo Huang,Ruiqiang Hang,Xiaohong Yao
Bacterial infection is one of the serious problems during wound healing. Antibiotics and traditional antibacterial treatment can produce side effects, such as bacterial resistance, cell toxicity, during the long-term interaction with bacteria. Therefore, developing new antibacterial materials and methods for rapid and safe disinfection in wound healing is important. This work fabricated a hybrid hydrogel incorporated with Ag 3 PO 4 /MoS 2 composites for rapid sterilization during wound healing. This hydrogel exhibited a superior antibacterial activity within 5 min by co-irradiation of 660 nm visible light (VL) and 808 nm near infrared (NIR) light due to the synergistic effects of both photodynamic antibacterial and photothermal antibacterial treatments. In addition, the antibacterial hydrogel could promote the wound healing compared with the pure hydrogel and medical gauze (MG) and cause no noticeable organ abnormalities in rats during the wound healing process.
研究领域:
生物医学工程
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材料科学
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感染与免疫
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产品关联
DOI
高影响因子
Russian Journal of Physical Chemistry A
·
2020
·Vol. 94
·期 5
·1067-1072
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IF 0.719
Liang An,Meng Yuan,Wang Tao,Xiong Chao,Yan Zhaoxiong,Xu Zhihua
Abstract A new magnetic Ag 3 PO 4 –TiO 2 –Fe 2 O 3 photocatalyst (Ag–Ti–Fe) has been synthesized by a solid-state blending method. The sample was analyzed by XRD, FT-IR, and VSM, and its photocatalytic performance in treatment of simulated dye-contaminated wastewater was evaluated in photocatalytic tests. SEM and FT-IR results confirmed that Ag–Ti–Fe catalyst was composed of Ag 3 PO 4 , anatase and maghemite. Results of photocatalytic tests revealed that Ag–Ti–Fe exhibited the highest photocatalytic activity on water treatment compared with contrastive samples whether the light source was UV or visible light, and the ultimate degradation efficiency of orange II reached 86.71 and 78.13%, respectively. Ag–Ti–Fe could decompose chemically stable groups, rather than simply destroy chromogenic azo double bonds, and it could further effectively remove methyl orange, rhodamine B, methylene blue from water, respectively. VSM results showed that the saturation magnetization of Ag–Ti–Fe was 4.80 emu/g, and it could be separated simply and quickly with the magnetic field.
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
RSC Advances
·
2019
·Vol. 9
·期 2
·721-729
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IF 3.049
Yu An,Pengwu Zheng,Xiaofei Ma
A novel floating visible-light photocatalyst (HGMs–TiO2/Ag3PO4) composite was prepared using amino modified low-density hollow glass microspheres (HGMs) as carriers to disperse and support TiO2 and Ag3PO4 photocatalysts. The surface morphology, crystal structure and optical properties of the HGMs–TiO2/Ag3PO4 composites were characterized and the Ag3PO4 content on the surface of the microspheres was determined by atomic absorption spectrometry (AAS). Methylene blue (MB) was chose as the organic pollutant to investigate the visible-light catalytic properties of the HGMs–TiO2/Ag3PO4 composites. For HGM composite photocatalysts, when the theoretical mass ratio of TiO2 to Ag3PO4 on the surface of HGMs is 1 : 1.5, the visible-light catalytic activity of the composite is superior to pure Ag3PO4 and a TiO2/Ag3PO4 photocatalyst with a mass ratio of 1 : 1.5 under the same conditions, due to the increased light-contact area and the photocatalytic active sites, since the TiO2 and Ag3PO4 particles can be well dispersed on the surface of the floating HGMs. Furthermore, the deposits of TiO2 and Ag3PO4 on the HGM surface form a heterostructure, facilitating the separation of electron–hole (e− – h+) in the energy band, and elevating the photocatalytic activity and cycle stability of Ag3PO4. This work indicates that floating HGMs–TiO2/Ag3PO4 composites could become a promising photocatalyst for organic dye removal due to the low cost and high visible-light responsiveness.
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
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2018
·
IF 11.698
Ning Shao,Zhiang Hou,Hanxu Zhu,Jinnan Wang,Corvini Philippe François-Xavier
To improve the visible-light photocatalytic activity and anti-photocorrosion of Ag 3 PO 4 , novel 3D core-shell CQDs/Ag 3 PO 4 @benzoxazine tetrapods with more exposure of {110} facets of Ag 3 PO 4 has been successfully synthesized for the first time by electrochemical oxidation, chemical precipitation and molecular self-assembly reaction. In CQDs/Ag 3 PO 4 @benzoxazine tetrapods, CQDs could not only induce more photocarrier generation from high-energy facets of Ag 3 PO 4 tetrapods but also accelerate the electrons transfer from conduction band of Ag 3 PO 4 tetrapods to the bottom of conduction band of CQDs. Furthermore, silver amine complex could act as a bridge for the photo-electrons flowing from core to shell, which is beneficial to the subsequent free radical chain reaction. In addition, the 3D core-shell structure decreased the solubility of Ag 3 PO 4 . UV–vis DRS, indicating that the band gap of CQDs(0.38%)/Ag 3 PO 4 @benzoxazine (1.65 eV) was far less than that of Ag 3 PO 4 tetrapods (2.0 eV) and traditional Ag 3 PO 4 (2.45 eV). Moreover, the photocurrent tests showed that CQDs(0.38%)/Ag 3 PO 4 @benzoxazine had perfect drift ability of generated photocarriers. Accordingly, the CQDs(0.38%)/Ag 3 PO 4 @benzoxazine tetrapods exhibited excellent visible-light photocatalytic activity and anti-photocorrosion performance. More than 93% of Methylorange and rhodamine B could be photodegraded within 16 min and 10 min over CQDs(0.38%)/Ag 3 PO 4 @benzoxazine tetrapods, respectively. Even after 9 cycles, CQDs(0.38%)/Ag 3 PO 4 @benzoxazine could still remain 95% removal rate of sulfamethoxazole (SMX) with 10 min. Through recycling catalytic experiments and photodegradation pathway explore of SMX, the CQDs(0.38%)/Ag 3 PO 4 @benzoxazine composite suggest its great mineralization capability on sulfonamide antibiotics. The free radicals trapping experiments demonstrated that the holes photoinduced were the main active oxidizing species which played the dominant role in the photocatalytic process. Thus, CQDs(0.38%)/Ag 3 PO 4 @benzoxazine is a promising visible-light responses catalyst for photodegradation of organic pollutants in the environmental protection.
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
MOLECULES
·
2025
·Vol. 30
·期 15
·3289
·
IF 4.6
Jingfei Luan,Tiannan Zhao
In this study, a Z-scheme Ho2InSbO7/Ag3PO4(HAO) heterojunction photocatalyst was successfully fabricated for the first time by ultrasound-assisted solvothermal method. The structural features, compositional components and morphological characteristics of the synthesized materials were thoroughly characterized by a series of techniques, including X-ray diffraction, Fourier transform infrared spectroscopy, Raman spectrum, X-ray photoelectron spectroscopy, transmission electron microscopy, scanning electron microscopy and energy-dispersive X-ray spectroscopy. A comprehensive array of analytical techniques, including ultraviolet-visible diffuse reflectance absorption spectra, photoluminescence spectroscopy, time-resolved photoluminescence spectroscopy, photocurrent testing, electrochemical impedance spectroscopy, electron paramagnetic resonance, and ultraviolet photoelectron spectroscopy, was employed to systematically investigate the optical, chemical, and photoelectronic properties of the materials. Using oxytetracycline (OTC), a representative tetracycline antibiotic, as the target substrate, the photocatalytic activity of the HAO composite was assessed under visible light irradiation. Comparative analyses demonstrated that the photocatalytic degradation capability of the HAO composite surpassed those of its individual components. Notably, during the degradation process, the application of the HAO composite resulted in an impressive removal efficiency of 99.89% for OTC within a span of 95 min, along with a total organic carbon mineralization rate of 98.35%. This outstanding photocatalytic performance could be ascribed to the efficient Z-scheme electron-hole separation system occurring between Ho2InSbO7and Ag3PO4. Moreover, the adaptability and stability of the HAO heterojunction were thoroughly validated. Through experiments involving the capture of reactive species and electron paramagnetic resonance analysis, the active species generated by HAO were identified as hydroxyl radicals (•OH), superoxide anions (•O2−), and holes (h+). This identification provides valuable insights into the mechanisms and pathways associated with the photodegradation of OTC. In conclusion, this research not only elucidates the potential of HAO as an efficient Z-scheme heterojunction photocatalyst but also marks a significant contribution to the advancement of sustainable remediation strategies for OTC contamination.
研究领域:
环境科学
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材料化学
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催化
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水处理
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纳米技术
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产品关联
DOI
PubMed
高影响因子
FDMP-Fluid Dynamics & Materials Processing
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2022
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IF 0
Chao Wei,Zhongjin Peng,Yunfei Chen,Yanhai Cheng
Ag 3 PO 4 exhibits a high photocatalytic activity if exposed to visible light, however, it displays bottlenecks such as poor cycle-stability and mediocre ability to degrade methyl orange (MO) because of limited adsorption of MO molecules onto its surface. In this study, nano TiO 2 prepared by a one-step method was combined with Ag 3 PO 4 to form a TiO 2 @Ag 3 PO 4 heterojunction in order to improve this material both in terms of photocatalysis and photostability. After adding a KH-570 silane coupling agent, the photocatalytic performance of TiO 2 @Ag 3 PO 4 could be improved even further, with the degradation rate of MO maintained at more than 90% after three cycles of visible in light.
研究领域:
材料科学
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纳米技术
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环境科学
·
化学工程
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DOI
SEPARATION AND PURIFICATION TECHNOLOGY
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2020
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IF 5.774
Chenlu Liu,Jingjing Xu,Junfeng Niu,Mindong Chen,Yonghui Zhou
This paper introduces a Z-scheme Ag 3 PO 4 /Bi 4 Ti 3 O 12 heterojunction composite photocatalyst prepared by an in-situ growth method. The photocatalytic properties of the prepared samples under visible light irradiation were studied by degrading sulfamethoxazole (SMX). The results of photocatalytic experiments and cycle experiments showed that Ag 3 PO 4 /Bi 4 Ti 3 O 12 -20% composite exhibited much better photocatalytic activity and stability than pure Ag 3 PO 4 and pure Bi 4 Ti 3 O 12 . The capture experiment results showed that h + is the main active substance in the process of SMX degradation. In addition, we proposed a possible photocatalytic mechanism based on the results of experiment and characterization. The formation of a direct Z-Scheme photocatalytic system promoted the separation of carriers, thereby improving the stability and activity of the composite samples.
研究领域:
环境科学
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材料科学
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产品关联
DOI
高影响因子
RSC Advances
·
2015
·Vol. 5
·期 117
·96685-96694
·
IF 3.84
Feng Ding,Sizhao Zhang,Xuegang Luo,Xiaoyan Lin
The treatment of organic dyes is often conducted using the photocatalytic technique, however, the necessity for ultraviolet irradiation and efficient degradation still limit its wide practical application. Here, we report on a facile and effective co-precipitation hydrothermal method for fabricating Ag3PO4/α-Bi2O3 (AB) hierarchical heterostructures with an improved visible-light response. Rod-like α-Bi2O3 was firstly prepared under hydrothermal conditions, and then silver nitrate and disodium hydrogen phosphate were successively added to form AB. The measurement results signify that heterojunctions of polyhedral Ag3PO4 adhered to rod-like α-Bi2O3 were apparently found. AB possesses a markedly enhanced photocatalytic performance and outstanding ability in decomposing methylene blue (MB), methyl orange (MO) and rhodamine B (RhB) under visible light, compared to pure α-Bi2O3 or Ag3PO4. The amount of silver ions released reveals that the formation of α-Bi2O3 could enhance the stability of the AB composites. The fluorescence tests indicate that AB is helpful in producing the ˙OH radicals responsible for enhanced photocatalytic activity. The degradation rate could be maintained even after three degradation cycles, suggesting an admirable chemical and physical stability of AB. In addition, a possible mechanism for the enhanced photocatalytic properties of AB was also discussed.
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
MATERIALS & DESIGN
·
2017
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IF 4.364
Xiao Du,Jun Wan,Jia Jia,Chao Pan,Xiaoyun Hu,Jun Fan,Enzhou Liu
Ag 3 PO 4 -Bi 2 MoO 6 heterojunctions with visible-light photocatalytic activity were successfully fabricated via a deposition-precipitation method. The investigation shows that Ag 3 PO 4 -Bi 2 MoO 6 composites exhibit enhanced visible light harvesting ability and better degradation efficiency for RhB compared with Bi 2 MoO 6 and Ag 3 PO 4 under visible light irradiation (λ > 420 nm). What's more, we found that the activity and the stability of Ag 3 PO 4 -Bi 2 MoO 6 heterojunction could be further improved by adding of H 2 O 2 in the RhB reaction solution. The enhanced photocatalytic performance and structure stability are primarily attributed to the efficient charge carrier separation of the heterojunction formed by Ag 3 PO 4 and Bi 2 MoO 6 , and the electron capturing property of H 2 O 2 on the surface of Ag 3 PO 4 -Bi 2 MoO 6 composites, leading to a highly efficient removal of RhB using the Ag 3 PO 4 -Bi 2 MoO 6 -H 2 O 2 system. In addition, the active species trapping experiments indicate that h + and •O 2 – play important roles during the photocatalytic degradation process . This work suggests that the H 2 O 2 assisted Ag 3 PO 4 -Bi 2 MoO 6 heterojunction system could be a potential promising photocatalyst for environmental remediation.
研究领域:
环境科学
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材料科学
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产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
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2022
·Vol. 33
·期 10
·7543-7558
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IF 2.779
Duan Mengtian,Wu Daoxin,Wu Jialun,Tong Haixia
A precipitation process was used to produce Ag 3 PO 4 with an irregular small polyhedral structure and an average size of 200–300 nm. Furthermore, using a simple dissolution precipitation technique, polyhedral Ag 3 PO 4 was successfully deposited on the surface of ZnWO 4 . XRD, SEM, TEM, XPS, UV–Vis DRS, and FT-IR spectroscopy were employed to analyze ZnWO 4 /Ag 3 PO 4 composites. The photocatalytic oxidation ability of composites was assessed using Rhodamine B dye degradation model. The results revealed that ZnWO 4 /Ag 3 PO 4 composite material displayed improved visible-light photocatalytic activity, with 7% ZnWO 4 /Ag 3 PO 4 exhibiting the maximum photocatalytic activity. The degradation rate of RhB was 94.0% after 120 min of visible-light irradiation. Nyquist plot indicates that 7% ZnWO 4 /Ag 3 PO 4 composites show the smallest diameter, suggesting a more effective separation of photogenerated electron–hole pairs and faster interface charge transfer. The photocatalytic activity of ZnWO 4 /Ag 3 PO 4 composites does not deteriorate considerably after four cycles, indicating their high stability. The active species capture tests show that h + and •OH are possible reactive species in the degradation reaction. Finally, the p-n heterojunction mechanism is proved by the discussion of the band structure. This study demonstrates that ZnWO 4 /Ag 3 PO 4 photocatalytic composites can be utilized to degrade contaminants.
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
APPLIED SURFACE SCIENCE
·
2015
·
IF 2.711
Jinlei Xie,Yefeng Yang,Haiping He,Ding Cheng,Minmin Mao,Qinxu Jiang,Lixin Song,Jie Xiong
Heterostructured semiconductor nanostructures have provoked great interest in the areas of energy, environment and catalysis. Herein, we report a novel hierarchical Ag 3 PO 4 /TiO 2 heterostructure consisting of nearly spherical Ag 3 PO 4 particles firmly coupled on the surface of TiO 2 nanofibers (NFs). The construction of Ag 3 PO 4 /TiO 2 heterostructure with tailored morphologies, compositions and optical properties was simply achieved via a facile and green synthetic strategy involving the electrospinning and solution-based processes. Owing to the synergetic effects of the components, the resulting hybrid heterostructures exhibited much improved visible light photocatalytic performance, which could degrade the RhB dye completely in 7.5 min. In addition, the coupling of Ag 3 PO 4 particles with UV-light-sensitive TiO 2 NFs enabled full utilization of solar energy and less consumption of noble metals, significantly appealing for their practical use in new energy sources and environmental issues. The developed synthetic strategy was considered to be applicable for the rational design and construction of other heterostructured catalysts.
研究领域:
材料科学
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环境科学
·
纳米技术
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DOI
高影响因子
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
·
2024
·
IF 4.1
Jiarong Wu,Xinyu Li,Dayong Fan,Ming Li,Hongyu Zhu,Shuai Li
Bismuth vanadate (BiVO 4 ) is a promising metal oxide photoabsorber for photoanode applications but is limited by its relatively short hole diffusion length resulting in severe charge complexation and limited performance. Herein, Ag 3 PO 4 was compounded on BiVO 4 through photodeposition of Ag followed by solution oxidation. The annealing of the composite BiVO 4 /Ag 3 PO 4 heterojunction at 400 °C precipitated some Ag from Ag 3 PO 4 on BiVO 4 /Ag 3 PO 4 to form a new ternary photoanode BiVO 4 /Ag 3 PO 4 /Ag. Compared to the unannealed sample, the light trapping and crystal quality enhanced, resulting in increased photocurrent density of the annealed BiVO 4 /Ag 3 PO 4 photoanode (4.46 mA cm −2 ) by 59.9 % when compared to the unannealed photoanode (2.79 mA cm −2 ). To further optimize the photoanode, co-catalyst iron hydroxyl oxide (FeOOH) was deposited to yield BiVO 4 /Ag 3 PO 4 /Ag/FeOOH photoanode with maximum photocurrent density of 4.71 mA cm −2 at 1.23 V (vs. reversible hydrogen electrode, V RHE ), equivalent to about 3.7-fold the value of BiVO 4 photoanode. The photoanode maintained 90.8 % of its initial current density after 3 h stability tests. Besides, the photoelectrocatalytic degradation of Rhodamine B pollutant by BiVO 4 /Ag 3 PO 4 /Ag and BiVO 4 /Ag 3 PO 4 /Ag/FeOOH photoanode showed performance enhancement when compared to BiVO 4 /Ag 3 PO 4 . Overall, the proposed strategy looks very promising for the rational fabrication of high-efficiency heterojunction photoanodes.
研究领域:
材料科学
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光电化学
·
催化
·
环境科学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）