APPLIED SURFACE SCIENCE
·
2017
·
IF 3.387
Ziyuan Jiang,Jiaqi Pan,Beibei Wang,Chaorong Li
The two dimensional(2D) Z-scheme AgCl/Ag/Ca/TiO 3 nano-heterojunction is synthesized via simple preparation of hydrothermal-chemical co-deposition method. The results of SEM, EDS, elemental mapping, XRD, TEM, XPS and Raman shift imply that the AgCl/Ag nanoparticles have deposited on the surfaces of CaTiO 3 nanosheets successfully. Compared with the unmodified samples, the photocatalytic activity of the as-prepared 2D AgCl/Ag/CaTiO 3 nano-heterojunction exhibits a remarkable enhancement by the hydrogen production. Further, the photocatalytic process has been studied and the mechanism of the photocatalytic hydrogen production enhancement has been provided, which could be ascribed to the Z-scheme heterojunction and 2D lamellar structure of the CaTiO 3 .
研究领域:
材料科学
·
环境科学
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2021
·
IF 13.273
Feihu Mu,Chunxia Liu,Yun Xie,Shijian Zhou,Benlin Dai,Dehua Xia,Haibao Huang,Wei Zhao,Cheng Sun,Yan Kong,Dennis Y.C. Leung
A novel metal–organic framework (MOF)-derived rodlike AgCl/Ag/In 2 O 3 plasmonic photocatalyst has been successfully prepared by electrostatic self-assembly, co-precipitation, in-situ photoreduction, and calcination. The photocatalytic activity of the samples was systematically investigated by photocatalytic tetracycline (TC) oxidation and Cr(VI) reduction under visible light irradiation. Among the as-prepared samples, AgCl/Ag/In 2 O 3 -2 displayed the most effective photocatalytic activity. For photocatalytic TC oxidation, the apparent rate constant of AgCl/Ag/In 2 O 3 -2 was 0.5036 min −1 , which was 2.7, 6.5, and 1.8 times higher than that of In 2 O 3 (0.1845 min −1 ), AgCl/In 2 O 3 (0.1544 min −1 ) and Ag/In 2 O 3 (0.2850 min −1 ), respectively. In addition, AgCl/Ag/In 2 O 3 -2 also exhibited the highest activity for photocatalytic Cr(VI) reduction, and the photocatalytic Cr(VI) reduction rate of AgCl/Ag/In 2 O 3 -2 in 3hrs could reach 94.8%. The superior photocatalytic activity was due to the enhanced absorption in the visible light region caused by localized surface plasmon resonance (LSPR) and the efficient interfacial charge migration and separation in AgCl/Ag/In 2 O 3 samples. Moreover, the intermediates formed in the photocatalytic TC oxidation were identified by GC–MS. Finally, a series of characterizations and simulations (density functional theory, cambridge serial total energy package, and finite difference time domain) were carried out to demonstrate the plasmonic Z-scheme photocatalytic mechanism.
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Environmental Chemical Engineering
·
2016
·
IF 0
Xiuzhen Lin,Hong Liu,Bing Guo,Xinhai Zhang
In this research, AgCl/Ag/AgCl core-shell microstructures have been synthesized at room temperature through a facile in situ method. The as-synthesized unique microstructures were characterized by SEM-EDS, XRD, XPS, UV–vis diffuse reflectance spectroscopy. And their photocatalytic activities were evaluated by degradation of methyl orange (MO) under UV, visible and sunlight irradiation. Comparing with the commercially available P25-TiO 2 and AgCl/Ag core-shell microstructures, our as-prepared samples gave the highest reactivity (almost 100% decomposition in 20 min) under direct sunlight irradiation. Their excellent photocatalytic activities are ascribed to the unique three-layered AgCl/Ag/AgCl core-shell microstructures, leading to improved electron-hole (e − -h + ) separation efficiency and promoting the inside charge carriers promptly transferred to the surfaces. In addition, their photocatalytic activity did not show any loss after four-time recycles, revealing high stability. In brief, the as-synthesized three-layered AgCl/Ag/AgCl core-shell microstructures exhibit their promising potential as efficient sunlight-driven photocatalysts for organic pollutants degradation.
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
·
2025
·
IF 4.6
Shenglong Chen,Qiang Zhou,Xiaojing Liu,Hongyan Guan,Peng Dong,Hongman Hou,Gongliang Zhang,Jingran Bi,Shuang Yan,Hongshun Hao
In this study, a novel Z-scheme ZnO-AgCl-Ag photocatalyst was prepared by converting the metal-organic framework ZIF-8 to ZnO via a simple pyrolysis method and using a physical wet mixing method. The crystal structure, microstructure, elemental distribution, and photoelectrochemical properties of the catalyst were systematically characterized using various analytical techniques. The characterization results showed that the introduction of AgCl/Ag into ZnO exhibited a higher light absorption capacity as well as a lower transmission resistance. Photocatalytic degradation experiments showed that the ZA-3 sample achieved a 99.97 % degradation rate of 10 mg/L RhB in 24 min, which was 2.3 higher than that of ZIF-8-derived ZnO. In addition, we systematically investigated the effects of initial RhB concentration, solution pH, anion interference, and catalyst recycling cycle on the photocatalytic activity, demonstrating the stability and applicability of the composites under different conditions. In addition, radical trapping experiments were conducted to probe the photocatalytic reaction mechanism, and a Z-scheme charge transfer pathway was confirmed, in which photogenerated electrons were effectively separated and transferred at the Z-scheme heterojunction interface through the conductive channel of Ag nanoparticles as carriers, which significantly improved the photocatalytic activity. In this study, the advantages of MOFS were rationally and effectively utilized to design and prepare Z-scheme photocatalysts with UV–visible response.
研究领域:
材料科学
·
环境科学
·
纳米技术
·
光催化
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2020
·
IF 6.182
Dong Liang,Junjun Luo,Yaliang Huang,Xiang Liang,Zaichun Zhou,Jianxiu Wang,Xiaoqing Qiu
In this study, we report the development of indirect Z-scheme heterojunction to construct a cathodic photoelectrochemical (PEC) sensor for highly-selective detection of endogenous H 2 S using AgCl-Ag core–shell nanostructures coupled with porous carbon nitride (PCN) as cathode materials. As an electron mediator, Ag on the Z-scheme heterojunction transformed to Ag 2 S in the presence of H 2 S, resulting in the destruction of original charge-carrier migration pathway. Meanwhile, photo-induced charges on the then formed AgCl-Ag 2 S/PCN cannot be as effectively separated as they are on AgCl-Ag/PCN due to the straddling energy band alignments. A decrease in cathodic signal may be expected. Consequently, the H 2 S concentration could be quantitated by such corresponding decrease, which thus underlines a novel signal-off cathodic PEC bioanalysis strategy. More importantly, the ‘Z-scheme’ PEC sensor based on AgCl-Ag/PCN exhibits analytical performance with high sensitivity, showing its potential to be applied to the areas of biomedical and health care etc.
研究领域:
分析化学
·
环境科学
·
生物医学工程
✓ 已验证
DOI
高影响因子
MATERIALS RESEARCH BULLETIN
·
2018
·
IF 2.873
Aijun Cai,Aiying Guo,Liqaing Du,Yanling Qi,Xiuping Wang
In this paper, poplar leaf is used as a template to synthesize hierarchical AgCl-Ag-ZnO composites via a calcination method. Zn(NO 3 ) 2 and AgNO 3 are selected as precursors. During the calcination of the templates, Zn 2+ ions react with oxygen to produce ZnO nanoparticles (NPs), Cl − ions in leaf cells combine with the external Ag + ions to form AgCl, and Ag + ions are reduced by reducing agents in leaf to Ag NPs. The morphology, structure and visible-light response of the as-prepared hierarchical AgCl-Ag-ZnO composites are determined. The composites exhibit a strong photocatalytic activity toward the degradation of Rhodamine B (RhB) under visible-light irradiation. The AgCl-Ag-ZnO composites display an enhanced photocatalytic activity, compared with the leaf-templated AgCl-Ag and ZnO. A photocatalytic mechanism is proposed, based on the efficient separation of photoexcited electron-hole pairs due to the surface plasmon resonance (SPR) effect of metal Ag.
研究领域:
材料科学
·
化学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Qiaojie Luo,Zhenzhen Zhang,Yadong Chen,Chang Shu,Yajie Cheng,Yanji Lu,Jiajia Xu,Xiaodong Li
Deep caries management faces a critical dilemma: preserving pulp vitality versus ensuring durable restoration. Current dentin bonding technique and materials fail to eliminate residual pathogens in preserved soft dentin or stabilize resin-dentin interfaces against enzymatic/microbial degradation. Here, we present a light-programmable AgCl@Ag nanoparticle system that overcomes these dual challenges through dynamic nanochemistry. By orchestrating in situ AgCl deposition and photoreduction, our strategy achieves three breakthroughs: (1) Structural reinforcement: Polarity-driven Ag + chelation masks polar groups in demineralized dentin matrix (DDM), releasing interface confined water while doubling DDM modulus, greatly enhancing BisGMA infiltration to realize hermetic seal at the cavity periphery; (2) Sequential antibacterial action: Ag + rapidly penetrates biofilms to form AgCl NPs, followed by light-triggered transformation from AgCl NPs to AgCl@Ag NPs to generate Cl₂/HClO for residual pathogen eradication, to achieve a bacteria-free environment; (3) Self-stabilizing interface: Reducible AgCl@Ag nanoparticles inhibit MMPs and resist microbes and aging-induced delamination. This photo-responsive system eliminates secondary caries risk while maintaining pulp vitality, seamlessly integrating with clinical workflows. Through spatiotemporal control of silver chemistry, we redefine dental adhesion as intelligent platform to construct a biointerface that concurrently achieve sterilization, structural optimization, and enzymatic resistance. Our work establishes a paradigm for adaptive material design in moist biological environments, with implications extending to bone adhesives and chronic wound management.
研究领域:
牙科材料
·
纳米医学
·
抗菌治疗
·
粘接牙科学
·
生物界面工程
✓ 已验证
产品关联
DOI
高影响因子
Applied Materials Today
·
2021
·
IF 10.041
Jiangtao Xu,Wei Gao,Shouxiang Jiang
The construction of plasmonic nanocavities introduces strong optical resonances by confining electromagnetic fields on the nanostructured interfaces, implying their promising applications in sensing, advanced spectroscopies, and so on. However, the exploration of plasmonic nanocavities based on integrating metallic nanoparticles with semiconductors, especially semiconductor materials decorated metallic nanoparticles, remains challenges. Here, nanostructured AgCl@Ag nanowires with inhomogeneous nanocavities were prepared and investigated. Interestingly, there exists strong coupling effect and internal electric field on the semiconductor-metal interfaces which can enhance the intensity of distributed electric field. Moreover, the prepared substrates show great SERS sensing performance with excellent reusability. This study offers a novel strategy and depth understand for the design and applications of plasmonic nanocavities.
研究领域:
材料科学
·
光学
·
分析化学
✓ 已验证
产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2026
·
IF 6.6
Chen Lin,Jiabin Lu,Qiyuan Wu,Xiaolan Xiao
Fabricated a broad-spectrum responsive AgCl@Ag photocatalyst with SPRE. • AgCl@Ag exhibits 2.4-fold higher MRR than TiO 2 under visible light. • Revealed SPRE-enhanced ·OH generation and synergistic removal mechanism. To overcome the ultraviolet (UV) light limitation of conventional TiO 2 -based photocatalysis-assisted polishing, AgCl@Ag composite particles with surface plasmon resonance effect (SPRE) were prepared via a precipitation-chemical reduction method. Their morphology, phase composition, surface chemistry, and optical absorption were characterized by SEM, XRD, XPS, and UV–Vis. Photocatalytic activity and polishing performance on single-crystal SiC were systematically compared with commercial TiO 2 under both UV and visible light. The AgCl@Ag particles showed uniform size, regular morphology, no surface impurities, and broad-spectrum absorption. Under UV light, both AgCl@Ag and TiO 2 achieved >90% methyl orange degradation within 30 min, with comparable polishing performance: AgCl@Ag yielded an MRR of 86.7 nm·h −1 and a surface roughness Sa of 3.25 nm, versus 77.0 nm·h −1 and 3.28 nm for TiO 2 . Under visible light, significant differences emerged. TiO 2 degraded only 13% of methyl orange in 30 min, with an MRR of 22.8 nm·h −1 and Sa of 6.78 nm. In contrast, AgCl@Ag achieved >55% degradation, an MRR of 55.0 nm·h −1 , and Sa of 4.93 nm under the same conditions. The SPRE of AgCl@Ag promotes photogenerated charge carrier separation, enabling ·OH radical generation that synergistically forms and mechanically removes the surface oxide layer on SiC. Download: Download high-res image (250KB) Download: Download full-size image
✓ 已验证
产品关联
DOI
高影响因子
MICROCHIMICA ACTA
·
2025
·Vol. 192
·期 7
·1-18
·
IF 5.3
Li Xinlou,Wang Ganghui,Wang Haoxiang,Wang Aijia,Guo Hongxu
AgCl/Ag@MOF(Ag) nanocomposites have been successfully fabricated through a simple and quick one-pot reflux approach for the first time, where AgCl/Ag nanoclusters are stabilized on the sheet-like MOF(Ag) surface. The as-prepared Ag-based MOFs fluorescent probe shows high fluorescence intensity and excellent fluorescence stability for sensing of tetracycline antibiotics (TCs) through mechanisms involving inner filter effect (IFE) and static quenching. The experimental results show that the detection concentration ranges for tetracycline (TET), chlortetracycline (CTC), and oxytetracycline (OTC) were 10–80 μM, 10–60 μM, and 10–30 μM, and with the detection limits of 2.59 nM, 1.36 nM, and 1.43 nM, respectively. The high sensitivity and selectivity of the fluorescent probe for TCs offers novel perspectives on utilizing supported MOFs as fluorescent probes for trace TCs detection in food by a fast, simple, and reliable method. Graphical abstract
✓ 已验证
产品关联
DOI
PubMed
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2021
·
IF 4.539
Na Chang,Yan-Ru Chen,Feng Xie,Ya-Pan Liu,Hai-Tao Wang
It is of great importance to fabricate photocatalyst with high photocatalytic activity, and the formation of Z-scheme heterojunction photocatalyst has been proved to be an effective way to restrain the recombination of photo-induced carriers. In this work, Z-scheme AgCl/Ag-doped-ZIF-8 heterojunction is synthesized via a two-step process involving appropriate amount of cationic Ag ion doping into the imidazole ring of ZIF-8 framework and the precipitation of AgCl onto this Ag-doped-ZIF-8. The successful doping of ZIF-8 which decreases the band gap energy, enhances the light harvesting. Besides, the separation efficiency of photo-induced carriers is further improved due to the formation of Z-scheme AgCl/Ag-doped-ZIF-8 heterojunction, which is confirmed by photoelectrochemical experiments. As a result, the as-prepared AgCl/Ag-doped-ZIF-8 photocatalyst possesses excellent photocatalytic activity under visible light illumination. This work will provide a novel perspective for the design and construction of Z-scheme heterojunction for highly efficient photocatalysis.
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2016
·
IF 8.328
Jianxin Liu,Rui Li,Yingyuan Hu,Tan Li,Zehui Jia,Yunfang Wang,Yawen Wang,Xiaochao Zhang,Caimei Fan
An Ag@AgCl/Ag nanofilm/ZIF-8 composite photocatalyst was successfully constructed for the first time by loading Ag@AgCl and Ag nanofilm on the surface of ZIF-8 simultaneously via a simple deposition-photoreduction method. The formed Ag nanofilm was harnessed as a mediator to transfer photo-induced electrons from the plasmonic Ag@AgCl nanostructure to ZIF-8 for enhancing the photocatalytic reaction rate with visible light. The photocatalytic activity was evaluated by photocatalytic degradation of methylene blue (MB) under visible light irradiation. The first-order kinetic constant of MB degradation over Ag@AgCl/Ag nanofilm/ZIF-8 (14.762 h −1 ) was nearly 2 times of Ag@AgCl/ZIF-8 (7.932 h −1 ). The electrochemical impedance spectra, photoelectric conversion spectra and ESR DMPO-O 2 − species spectra revealed that AFZ had a lower resistance, higher photocurrent density and more generation of superoxide radical than those of AZ, meaning that the extended interface between Ag nanofilm and ZIF-8 could promote the quick electrons transfer and electron-hole pairs separation. This work provides a new type electrons transfer mediator in fabrication of efficient plasmonic photocatalysts.
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）