Advanced Composites and Hybrid Materials
·
2025
·Vol. 8
·期 6
·417
·
IF 21.8
Yang Junnan,Gao Feng,Yu Xin,Li Jiahang,Tang Yanting,Tian Yajie,Roy Vellaisamy A. L.
The need for effectively wastewater treatment is becoming urgent than before because of the serious enrichment of organic pollutants in natural waters. Researchers are increasingly focusing on strontium (Sr)-based semiconductors and their composites for efficient environmental photocatalysis because of their remarkable advantages. In this work, an integrated solvothermal–chemical precipitation strategy was to synthesize defective SrMoO 4- x nanoparticles with rich oxygen vacancies and hybrid AgCl-decorated SrMoO 4- x heterojunctions for the photodegradation of emerging pollutants. The obtained AgCl/SrMoO 4- x composites showed improved solar-light harvesting capacity through AgCl modification when compared to the SrMoO 4- x nanoparticles. Moreover, the synthesized AgCl/SrMoO 4- x heterojunction composites showed the markedly improved charge separation efficiency and demonstrated outstanding photocatalytic efficiency in degrading carbamazepine and tetracycline pollutants. The apparent rate constant of the optimal AgCl/SrMoO 4- x -51 composite for carbamazepine degradation was measured at 0.04437 min −1 , which was approximately 15.20 times that of AgCl and an impressive 748.68 times that of the SrMoO 4- x nanoparticles. Furthermore, ESR analysis for the identification of reactive species revealed that photo-generated holes and ·O 2 − species played dominant roles in the degradation of carbamazepine under visible-light irradiation. The current work highlights the significant advantages of plasmonic SrMoO 4 -based composite photocatalysts in effectively degrading emerging pollutants outperforming conventional heterojunction photocatalysts.
研究领域:
环境科学
·
材料化学
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光催化
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纳米材料
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水处理
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产品关联
DOI
高影响因子
CRYSTENGCOMM
·
2015
·Vol. 17
·期 42
·8113-8118
·
IF 4.034
Liao Chen,Tao Ye,Xinyi Jin,Jie Ren,Boning Huang,Zhi-Kang Xu,Hongzheng Chen,Hanying Li
Crystallization in gel media has been occasionally found to result in single crystals with gel networks incorporated inside, extending the gel method with a long history for crystallization into a platform to design the internal composite structures of a crystal. The limited number of gel-incorporated crystals has inspired the investigation on how general gel incorporation is. Crystallization in gels through decomplexation has been widely used to grow crystals with extremely low water solubility, while whether the gel networks are incorporated inside these crystals has not been studied. In this work, crystals of AgCl, AgI and CuCl have been grown in both agarose gels and silica gels by decomplexation. The crystallographic structures of the crystals were identified by powder and/or single X-ray diffraction. The internal hybrid structures were studied by examining the residue materials after gentle etching and complete dissolution of the crystals. When grown from agarose gels containing self-assembled fibrous structures, gel networks were incorporated into single crystals of all the three compounds. In sharp contrast, the gel networks were pushed away when the crystals were grown in silica gels. The discrepancy between the crystals grown from agarose gels and those from silica gels is consistent with the effect of gel strength on gel incorporation. This work may help to harvest gel-incorporated crystals.
研究领域:
晶体学
·
材料科学
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DOI
高影响因子
MATERIALS LETTERS
·
2019
·
IF 3.019
Chengjia Ju,Zhipeng Cheng,Pusu Zhao,XiaoZhong Chu,Hui Zhong,Lili Zhang,Jiming Xu
A novel porous AgBr microstructure with an average diameter of 1–4 μm was prepared for the first time through a facile two-step method, including the formation of AgBr/AgCl alloyed materials and the subsequent removal of AgCl. Field emission scanning electron microscopy (SEM), X-ray diffraction (XRD), and energy dispersive spectroscopy (EDS) were utilized to characterize the morphology, phase structure and elemental composition of the as-prepared products, respectively. The photocatalytic activity of the as-prepared products was investigated by the degradation of rhodamine B (RhB) under visible-light irradiation. The porous AgBr microstructure significantly enhanced the photocatalytic activity compared with AgCl and AgBr/AgCl alloys. The porous AgBr photocatalyst has potential application on pollutant degradation under sunlight.
研究领域:
材料科学
·
环境科学
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DOI
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2015
·
IF 7.435
Xingxing Li,Zaiyin Huang,Zuojiao Liu,Kaisheng Diao,Gaochao Fan,Zhan Huang,Xuecai Tan
Much effort has been expended recently to investigate photocatalytic mechanisms by in situ spectroscopy. We introduced an alternative method to study photocatalysis thermodynamically by tracing thermodynamics and kinetics in real-time using a light-emitting diode photocalorimeter that includes a commercial microcalorimeter and fiber optics. We were almost able to adjust its baseline to zero by tuning the incident light intensity. After calibration, we used the photocalorimeter to trace heat changes and kinetics in the photocatalysis of methylene blue over a visible-light-driven Ag@AgCl photocatalyst. Three main heat changes occurred: (і) photoresponse of methylene blue molecules and photocatalyst, (іі) balance between endothermic photoresponse and pollutant photodegradation, and (ііі) stable exothermic stage in pollutant photodegradation. The photocalorimeter underwent an initial endothermic reaction and a subsequent exothermic stage, and finally maintained a stable exothermic rate of −(0.1543 ± 0.0446) mJ s −1 with a pseudo-zero-order process. The heat effects of stages (і), (іі), and (ііі) are 73.8, 143.9, and −1939.2 mJ, respectively. The photocatalytic mechanism was discussed in detail. Results from this study are critical to the development of promising applications in in situ photochemistry, physics, and biomedicine.
研究领域:
化学
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环境科学
·
物理化学
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产品关联
DOI
高影响因子
CELLULOSE
·
2021
·Vol. 28
·期 3
·1715-1729
·
IF 5.044
Liu Hongyu,Yang Lin,Zhan Yifei,Lan Jianwu,Shang Jiaojiao,Zhou Mi,Lin Shaojian
In this work, a durable and sunlight-driven self-cleaning superhydrophobic cotton fabric was developed as a multifunctional oil/water separation material. First of all, Ag/AgCl was successfully deposited on the polydopamine modified cotton fabric surface by electrostatic adsorption, then the Ag/AgCl loaded fabric was coated by the polydimethylsiloxane (PDMS) via simple dip-coating method. The as-prepared cotton fabric (PDMS-Ag/AgCl@CF) presented the superhydrophobic property with water contact angle about 155°. Meanwhile, the prepared PDMS-Ag/AgCl@CF exhibited great tolerance and resistance to broad pH and various organic solvents, and it can also withstand 50 cycles of abrasion or 60 min of ultrasound treatment without an apparent decrease of superhydrophobicity, indicating its outstanding mechanical durability. As expected, this durable superhydrophobic fabric can availably separate various oil/water mixtures by gravity-driven force with high separation efficiency (over 97.8%), and it possessed good reusability. Additionally, the PDMS-Ag/AgCl@CF exhibited an outstanding self-cleaning performance under sunlight irradiation, due to visible light photocatalytic performance of Ag/AgCl. Finally, the resultant cotton fabric displayed good antibacterial activity. Therefore, in consideration of its prominent comprehensive performances, it is expected that the PDMS-Ag/AgCl@CF can be used as a promising material for oily water remediation.
研究领域:
材料科学
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环境科学
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光催化
·
抗菌材料
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DOI
高影响因子
JOURNAL OF MATERIALS RESEARCH
·
2014
·Vol. 29
·期 10
·1175-1182
·
IF 1.815
Wang Wenyan,He Yiming,Wu Tinghua,Wu Ying
SnZn(OH) 6 (ZHS) hollow cubes were synthesized by a facile self-templated method at room temperature, and Ag/AgCl/ZHS particles were prepared by a photodepositing method. The crystalline structure and morphology of the prepared particles were characterized by x-ray diffraction, UV-vis diffuse reflectance spectroscopy, scanning electron microscopy, and N 2 adsorption. The results indicated that the particles had almost uniform monoclinic geometry and size. The photocatalytic oxidation of Rhodamine B was used to evaluate the photocatalytic activity of the synthesized photocatalysts. It is found that the hollow Ag/AgCl/ZHS showed the highest catalytic performance under visible or UV light, which can be attributed to the synergetic effect of Ag, AgCl, and ZHS.
研究领域:
材料科学
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光催化
·
纳米材料
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环境化学
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DOI
高影响因子
Micro & Nano Letters
·
2015
·Vol. 10
·期 12
·689-692
·
IF 0.853
Jun Zhu,Xiufang Xu,Maomao Yao,Yiqun Zheng,Shifeng Hou
A facile approach to producing silver (Ag) microspheres with a porous structure via a one-pot synthesis is described. The success of this work relies on the use of Cu 2+ to mediate the reduction of silver chloride by oleylamine. The type of additives, amount of copper(II) chloride, type of Ag precursor and reaction temperature were systematically investigated to reveal their roles in the formation of the unique porous structure. The method described provides a convenient route for fabricating porous Ag micro/nanocrystals and could be potentially extended to similar synthesis of other noble metals.
研究领域:
材料科学
·
化学
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产品关联
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2023
·Vol. 33
·期 43
·2306042
·
IF 19
Haoran Huang,Heyang Chen,Zhiqiang Gao,Yupeng Ma,Kunpeng Zhao,Tian-Ran Wei,Xun Shi
In general, inorganic non-metallic materials exhibit brittleness, and achieving plasticity in wide-gap semiconductors or dielectrics poses an even greater challenge. Historically, silver halides have been suggested to be ductile; however, their deformability under different load modes has not been well demonstrated, and the underlying mechanisms are not fully understood. In this study, the authors demonstrate the excellent plasticity of AgCl and AgBr polycrystals at room temperature under tension, bending, compression, and roller pressing. In particular, the rolling reduction rate of AgCl/AgBr exceeds 97%, corresponding to the plastic extensibility from 3600% to 4200%. The metal-like plasticity and multiple slip systems are attributed to the ionic features, specifically the Coulombic nature of the Ag-Cl/Br interactions, and the appreciable polarization of the anions. Such less localized diffuse bonding can be readily switched upon atomic gliding, thus ensuring slip without cleavage. This study contributes to the advancement of the understanding and development of wide-gap plastically deformable inorganic materials for applications in flexible, shape-conformable high-power electronics and dielectrics.
研究领域:
材料科学
·
固体力学
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产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Yingdong Hao,Yingxiao Wang,Pengyu Chen,Lu Chen,Wei Wei,Nannan Sun
Photocatalytic oxidation of methane (CH 4 ) to value-added chemicals offers a sustainable and promising approach for chemical synthesis, however, efficient catalysts for the activation of inert C H bonds remain challenging. Herein, a novel Ag-AgCl biphasic composite was used as co-catalysts to modify ZnO semiconductor (Ag-AgCl/ZnO-z). Structure properties and catalytic performance in photocatalytic oxidation of CH 4 of the sample were systematically investigated, together with comparison with pure ZnO (ZnO-z) and a single Ag modified counterpart (Ag/ZnO-z). It was found that Ag-AgCl/ZnO-z was enriched with heterogeneous interfaces, which facilitated ultrafast carrier transport and their prolonged separation. Interestingly, AgCl acted as a hole acceptor, and the lattice Cl can be directly activated to •Cl, which is then responsible for forming a new •CH 3 formation pathway via a hydrogen atom transfer (HAT) mechanism. Moreover, a Cl-looping process can be established so that the catalyst remained stable during cyclic reactions. Under the optimum conditions, an excellent liquid oxygenates productivity of 12,731 μmol·g −1 ·h −1 was achieved. This work presents a prototype for designing biphasic composite co-catalysts, thereby offering valuable insights into introducing multiple CH 4 activation pathways.
研究领域:
光催化
·
材料科学
·
化学合成
·
能量转换
·
环境化学
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产品关联
DOI
高影响因子
ACS Applied Nano Materials
·
2026
·
IF 5.8
Mingyue Yan,Bowen Li,Mengyuan Xu,Yuhua Shi,Jun Huang,Ke Kang,Kai chao Li,Xiaohu Mi,Zhenglong Zhang
An Au–AgCl Janus Nanoparticle (JNP) is an emerging plasmonic nanostructure that has attracted attention in the field of surface-enhanced Raman scattering (SERS). However, because of the large lattice mismatch between Au nanoparticles (NPs) and AgCl NPs, the instability of the AgCl NPs leads to very complex nucleation and growth kinetics, and the synthesis of Au–AgCl JNPs has challenges. In this work, we report a method for the synthesis of Au–AgCl JNPs by using Phenolic compounds and photochemical reduction. Phenolic compounds can reduce the adsorption energy between AgCl NPs and Au NPs during the growth process, resulting in the asymmetric deposition of Au atoms on the AgCl NPs surface. By utilizing blue-light irradiation to modulate the Ag atom sites on the AgCl NPs surface, the number of Au domains within the Au–AgCl JNPs can controllably change. The SERS detection limit for single Au–AgCl JNPs is determined to be as low as 10–10 M for Rhodamine 6G (R6G) molecules, outperforming pure Au NPs by 2–3 orders of magnitude. The enhancement is attributed to a synergistic mechanism involving interparticle gap effects that generate intense electromagnetic “hot spots” and efficient electron transfer between Au NPs and AgCl NPs. This work not only demonstrates a scalable strategy for fabricating lattice-mismatched Janus systems but also offers a framework for the rational design of heteronanostructures for SERS.
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产品关联
DOI
高影响因子
Journal of Materials Chemistry A
·
2021
·Vol. 9
·期 40
·22871-22877
·
IF 12.732
Yanqiu Wu,Muzaffar Ahmad Boda,Zhiguo Yi
Electrosynthesis of chemicals in parallel with hydrogen production exhibits distinct advantages: energy saving and generation of two value-added products. In this work, we first design an asymmetric neutral–acidic electrolytic cell by coupling the silver oxidation reaction (AOR) in a neutral anode chamber with the hydrogen evolution reaction (HER) in an acid cathode chamber. When the anode electrolyte contains a certain amount of chloride ions, AgCl particles can be steadily synthesized close to, but not in contact with, the silver electrode at a fixed voltage. This electrolytic cell requires a voltage of only 1.1 V to drive 10 mA cm−2. In order to simplify the system and reduce the cost, a symmetric acid membrane-free electrolytic cell is designed; this cell requires a voltage of only 0.95 V to drive 10 mA cm−2 and 1.37 V to drive 250 mA cm−2 when a silver rod and graphite rod are used as the anode and cathode, respectively. Besides high purity H2 generation at the cathode, the anode product is pure AgCl and its size can be controlled by changing the voltage. The Faraday efficiency is close to 95% for both H2 and AgCl generation.
研究领域:
化学工程
·
材料科学
·
能源技术
✓ 已验证
产品关联
DOI
高影响因子
Nanoscale Horizons
·
2025
·
IF 6.6
Hairong Hu,Yu-An Li,Meijuan Liu,Wei Xu,Yige Zhou
Silver nanoparticles (AgNPs) are widely used in daily life, with their aggregation behavior greatly impacting their application potential. Thus, studying the aggregation of AgNPs is crucial for their practical applications. Nano-impact electrochemistry (NIE) has gained significant attention due to its rapid, cost-effective, and in situ analysis capabilities at the single-nanoparticle level. In this study, we propose a method for real-time and non-destructive monitoring of the rapid aggregation behavior of AgNPs within 10 minutes in chlorine-containing acidic media using NIE, a condition particularly relevant to biological systems, such as the antibacterial applications of AgNPs. Under this environment, a thin AgCl layer forms on the surface of AgNPs, interconnecting them and facilitating their aggregation. Therefore, the aggregation behavior of AgNPs can be analyzed by quantifying the electrochemical reduction of the AgCl coating in NIE measurements, allowing insights into aggregation kinetics by tracking the number of aggregated AgNPs over time. This real-time, non-destructive approach to monitoring AgNP aggregation deepens our understanding of their physicochemical properties and dynamic behavior in biological environments, offering valuable insights for optimizing their application in practical settings.
研究领域:
分析化学
·
纳米科学
·
生物学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）