ACS Sustainable Chemistry & Engineering
·
2025
·
IF 7.3
Shumiao Zhang,Guangyao Fan,Ruiying Xie,Roberto Castro-Muñoz,Xiaoquan Feng,Dongyang Li,Xuerui Wang,Yatao Zhang,Meixia Shan
Covalent organic frameworks (COFs) are promising fillers for mixed-matrix membranes (MMMs) in gas separation due to their purely organic nature and tunable porosity. However, the inherently large pore sizes of most COFs limit propylene/propane selectivity solely on size sieving. Therefore, we employed a postsynthetic modification strategy to introduce Ag+ ions to the β-ketoenamine linkage carboxylic acid COF (TpDAT) framework to tailor the pore environment and facilitate propylene transport. The resulting TpDAT-Ag/6FDA-TMPDA MMMs achieved a synchronous improvement in the C3H6 permeability and C3H6/C3H8 ideal selectivity compared to the pure 6FDA-TMPDA membrane. The best performance of MMMs (10 wt % loading) demonstrated a C3H6 permeability of 142 Barrer and a C3H6/C3H8 ideal selectivity of 15, outperforming the performance of most polymer-based membranes. Density functional theory calculations further confirmed the favorable interaction between the C3H6 molecules and TpDAT-Ag. The outperforming separation performance together with the long-term stability renders this Ag+-modified COF a promising candidate in MMMs for C3H6/C3H8 and other gas separations.
✓ 已验证
产品关联
DOI
高影响因子
ACTA PHYSICO-CHIMICA SINICA
·
2023
·
IF 10.9
Kexin Dong,Chuqi Shen,Ruyu Yan,Yanping Liu,Chunqiang Zhuang,Shijie Li
The escalating presence of pharmaceutical antibiotics in natural water poses an overwhelming threat to the sustainable development of society. Photocatalysis technology stands out as a promising and cutting-edge environmental purification alternative. C 3 N 5 , identified as a distinctive nonprecious nonmetal photocatalyst, holds potential for environmental protection. However, challenges persist originating from the sluggish photoreaction kinetics and severe photo-carrier reunion. Currently, the design of a special S-scheme photosystem proves to be a reliable strategy for obtaining outstanding photocatalysts. In this context, a plasmonic S-scheme photosystem involving Ag/Ag 3 PO 4 /C 3 N 5 was developed through a feasible route. The compactly connected 0D/0D/2D Ag/Ag 3 PO 4 /C 3 N 5 heterostructure, benefitting from the synergy between the plasmonic effect and the S-scheme junction, facilitates the efficient utilization of appreciably reinforced sunlight absorption, effective photo-carrier disassociation, and notable photoredox capacity. Consequently, this system generates •OH and
⋅ O 2 - effectively. Ag/Ag 3 PO 4 /C 3 N 5 demonstrates a superb photocatalytic levofloxacin eradication rate of 0.0362 min −1 , marking a substantial advancement of 24.8, 1.1, and 0.7 folds compared to C 3 N 5 , Ag 3 PO 4 , and Ag 3 PO 4 /C 3 N 5 , respectively. Impressively, Ag/Ag 3 PO 4 /C 3 N 5 delivers remarkable anti-interference performance and reusability. This achievement signifies a significant step toward developing potent C 3 N 5 -involved photosystems for environmental purification. Download: Download high-res image (106KB) Download: Download full-size image
✓ 已验证
DOI
高影响因子
INORGANIC CHEMISTRY
·
2024
·
IF 4.3
Yun Wang,Zhiyuan Pan,Sihan Feng,Lijie Gao,Xuejiao Wang,Qi Zhu,Ji-Guang Li
Near-infrared (NIR)-emitting phosphors with high quantum efficiency and thermal stability are crucial to NIR pc-LEDs. Garnet-structured (GdLuCa)(Al4–zSiCrz)O12 (z = 0.01–0.2) and (Gd2–xLuCax)(Al4.95–xSixCr0.05)O12 (x = 0.2–1.0) new phosphors with promising NIR luminescence under blue light excitation were designed and fabricated by a solid-state reaction in this work. It was analyzed that the Ca2+, Cr3+, and Si4+ ions would replace Gd3+ in [GdO8], Al1 in [Al1O6], and Al2 in [Al2O4], respectively, and the optimal Cr3+ content is z = 0.05, above which concentration quenching would occur via an electric dipole–dipole interaction. Increasing Ca2+/Si4+ substitution up to x = 1.0 led to luminescence enhancement by a factor of up to 1.85 and internal/external quantum efficiency (%) increment from ∼25.9/10.7 to 63.4/27.5, and all of the phosphors showed excellent thermal stability (I423 K/I298 K ≥ 87.6%). The luminescence properties of Cr3+ were discussed in detail through systematic investigation of the effects of Cr3+ and Ca2+/Si4+ contents on the crystal structure, local coordination, and crystal field. With the NIR pc-LED device integrated from the optimal phosphor (x = 1.0) and a blue LED chip, electroluminescence manifested potential applications in night vision and medical diagnosis.
✓ 已验证
DOI
PubMed
高影响因子
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
·
2021
·Vol. 105
·期 4
·2690-2701
·
IF 3.784
Lu Zou,Zhao Lu,Ziling Wang,Bo Chi,Jian Pu
Developing high-efficiency and cost-effective bifunctional electrocatalysts toward the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) is an urgent issue for the oxygen-based electrochemical devices. Herein, an interface engineering concept has been proposed to achieve high-performance Ag–PBSC (Ag–PrBa 0.5 Sr 0.5 Co 2 O 5+δ ) heterostructure nanofibers catalyst. Benefiting from the significant ligand action and interparticle cooperation of exsolved Ag NPs and PBSC double perovskite, ORR/OER catalytic kinetics have been successfully boosted. In details, the PBSC double perovskite possessing abundant oxygen vacancies can provide oxygen channels and facilitate the transfer of electrons and oxygen. The embedded Ag NPs can deliver superior catalytic durability for the heterostructure interface. As expected, the as-synthesized Ag-PBSC heterostructure catalyst performs a favorable electrochemical performance in the oxygen-based applications. In alkaline media, the catalyst exhibits an excellent activity for ORR ( E onset : 0.88 V vs. RHE and E 1/2 : 0.72 V vs. RHE) and OER (1.67 V at 10 mA cm –2 ). When adopting the Ag–PBSC heterostructure catalyst in LOBs, the corresponding battery provides an outperforming capacity performance (13 000 mAh g –1 ), low discharge–charge polarization (1.37 V), and considerable cycling performance (128 cycles at the restricted capacity of 3 000 mAh g –1 and 400 mA g –1 ). Apparently, the work described here confirms that the interface engineering of perovskites can open up opportunities to develop highly active and durable heterostructure electrocatalysts for multitudinous oxygen-based electrochemical applications.
✓ 已验证
DOI
高影响因子
TALANTA
·
2021
·
IF 6.057
Shemsu Ligani Fereja,Ping Li,Jinhan Guo,Zhongying Fang,Ziwei Zhang,Zhihua Zhuang,Xiaohui Zhang,Kaifan Liu,Wei Chen
Folic acid (FA) is the natural form of water-soluble vitamins widely found in most plants and animal products and its deficiency leads to several human body abnormalities. The advancements of metal nanoclusters are highly increasing due to their molecule-like optical properties and attractive applications. Because of increasingly demand of noble metal nanoclusters as sensing templates, different synthesis methods have been developed for facile synthesis of noble metal nanoclusters . Herein, red-emitting fluorescent bovine serum albumin (BSA)-capped Au–Ag bimetallic NCs are facilely synthesized through green one-pot synthetic approach. The effect of silver on the fluorescence properties of Au NCs was investigated and it was found that introduction of silver can enhance the fluorescence intensity . The fluorescence intensity of the as-prepared Au–Ag nanoclusters gets quenched in the presence of folic acid in an aqueous medium and it was used as ultrasensitive sensing probe for FA detection. The developed Au–Ag NCs-based sensing probe shows linear response in the wide range of 0–100 μM and the detection limit is as low as 0.47 nM. Its applicability has also been confirmed successfully in real human serum, urine and FA tablet samples. Due to the high stability, sensitivity and selectivity , the developed bimetallic cluster sensing system is highly promising to be applied in the pharmaceutical and clinical laboratories.
✓ 已验证
DOI
高影响因子
Journal of Environmental Chemical Engineering
·
2022
·
IF 7.968
Hongji Li,Dongze Li,Junfu Wang,Haochen Yu,Chengsi Huang,Wei Jiang,Chunbo Liu,Guangbo Che,Dandan Wang
In this work, a novel imprinted sensor based on Ag-modified composite metal organic Frameworks (MOFs) was synthesized for selective detection to Rhodamine B (RhB) in river. UIO-66(NH 2 ) was firstly dispersed on the surface of ZIF-8 with the assistance of PVP, and Ag nanoparticles were dispersed on the surface by in-situ reduction. The ZIF-8/UIO-66(NH 2 )/Ag-MIPs (AZU-MIPs) were synthesized by the process of precipitation polymerization. It was proved from the analysis results that AZU-MIPs presented sensitive and selective detection property to RhB. Furthermore, AZU-MIPs also presented stability and repeatability property during the practical samples detection. There was an obvious linear relationship between concentration and Raman intensity when the concentration of RhB changed between 10 −6 M and 5 × 10 −11 M. The detection of limit (LOD) was 5 × 10 −11 M, and the correlation coefficient (R 2 ) was 0.9984. It could be considered that the novel imprinted sensor presented a promising candidate for Rhodamine B and other organic fluorescent dye detection in the river, and this work also provided an application prospect to the monitor of water environment.
✓ 已验证
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2019
·
IF 5.155
Zhaoyang Li,Yongjie Zhao,Qing Guan,Qian Liu,Sara Khan,Leilei Zhang,Xianze Wang,Lei Chen,Xia Yang,Mingxin Huo
Photocatalytic reduction of nitrate has attracted much attention recently, however, low efficiency and difficult separation have limited its application in practice. In this study, the novel direct dual Z-scheme AgBr(Ag)/MIL-101(Cr)/CuFe 2 O 4 (AB/M/CFO) was fabricated by the hydrothermal technology combined with the photodeposition method for the first time. The AB/M/CFO exhibited the highest nitrate conversion and nitrogen selectivity (79.9% and 94.5%, respectively) compared to AgBr(Ag)/MIL-101(Cr), MIL-101(Cr) and CuFe 2 O 4 for 30 min UV-light irradiation. The dual Z-scheme of AB/M/CFO enhanced electron transfer and charge separation, which was proved by transient photocurrent responses, leading to a significant improvement in photocatalytic efficiency. Meanwhile, after four cycles, the AB/M/CFO photocatalyst also displayed a strong magnetic separation ability and excellent recycling stability. Furthermore, the excitation and electron transfer process over dual Z-scheme AB/M/CFO photocatalytic material were proposed, based on the radical trapping experiments. Our work provides a new strategy to construct dual Z-scheme MOFs-based materials that have promising applications in photocatalytic reduction of pollutants.
✓ 已验证
DOI
高影响因子
LETTERS IN ORGANIC CHEMISTRY
·
2024
·Vol. 22
·期 1
·56-60
·
IF 0.7
Xin-Yu Lin,Guo-Jun Chen,Su-Zhe Wu,Ke-Xuan Xu,Xiao-Tian Zhang,Qi Feng
4-Hydroxyquinoline-2(1H)-ones exhibit multiple biological activities, and studying their synthetic methods is of great significance. In the presence of tetramethylguanidine and silver nitrate, 4-hydroxyquinoline-2(1H)-ones were efficiently synthesized from 2-ethynylanilines and carbon dioxide under atmospheric pressure. The reaction conditions, such as types of silver catalysts and reaction solvents, were optimized, and the applicability of the substrate was preliminarily investigated. This method provides an alternative pathway for the synthesis of 4-hydroxyquinoline-2(1H)-ones and the conversion and utilization of carbon dioxide.
✓ 已验证
DOI
高影响因子
Chinese Physics B
·
2016
·Vol. 25
·期 8
·088201
·
IF 1.436
Chao Li,Jun-Jie Sun,Duo Chen,Guang-Bing Han,Shu-Yun Yu,Shi-Shou Kang,Liang-Mo Mei
A facile step-by-step approach is developed for synthesizing the high-efficiency and magnetic recyclable Fe3O4@SiO2@Ag@Ni trepang-like nanocomposites. This method involves coating Fe2O3 nanorods with a uniform silica layer, reduction in 10% H2/Ar atmosphere to transform the Fe2O3 into magnetic Fe3O4, and finally depositing Ag@Ni core-shell nanoparticles on the L-lysine modified surface of Fe3O4@SiO2 nanorods. The fabricated nanocomposites are further characterized by x-ray diffraction, transmission electron microscopy, scanning electron microscope, Fourier transform infrared spectroscopy, and inductively coupled plasma mass spectroscopy. The Fe3O4@SiO2@Ag@Ni trepang-like nanocomposites exhibit remarkably higher catalytic efficiency than monometallic Fe3O4@SiO2@Ag nanocomposites toward the degradation of Rhodamine B (RhB) at room temperature, and maintain superior catalytic activity even after six cycles. In addition, these samples could be easily separated from the catalytic system by an external magnet and reused, which shows great potential applications in treating waste water.
✓ 已验证
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2022
·
IF 7.392
Yijun Fu,Yue Cheng,Qufu Wei,Yahong Zhao,Wei Zhang,Yumin Yang,Dawei Li
Single function of biomass aerogel restricts its further development, multifunctional biomass aerogel is becoming an urgent need. In this work, multifunctional biomass composite aerogel was prepared by co-modifying MXene and Ag nanowires (AgNWs) on bacterial cellulose/chitosan (BC/CH) composite aerogel through a facile method combining physical mixture, lyophilization and electrostatic adsorption. The as-prepared BC/CH/MXene/AgNWs composite aerogel could be applied as health monitoring sensor and photo-thermal antibacterial material. As a sensor, it showed high sensitivity, short response time, and satisfactory cycling stability for health monitoring. Moreover, the composite aerogel was successfully employed to monitor various human body motions including foot movements, elbow movements, wrist movement, respiration, and throat vibration pronunciation. In addition, the composite aerogel displayed excellent photothermal conversion performance, which could be quickly heated to more than 60 °C in 60 s under NIR laser irradiation (808 nm, 0.6 W/cm 2 ). The BC/CH/MXene/AgNWs composite aerogel showed nearly 100% sterilizing effect due to the synergistic antibacterial effect from common antibacterial role of CH/AgNWs and photo-thermal antibacterial role of MXene. The novel aerogel possesses more response characteristics and better antibacterial property than existing biomass aerogels, which may develop potential application prospect in wearable and implantable bioelectronic material for health monitoring.
✓ 已验证
DOI
高影响因子
ACS Applied Engineering Materials
·
2024
·
IF 0
Jiao Yang Lu,Zhen Qi Bu,Donghua Wang,Binsheng He,Wei Tao Huang
Nanocomposites have gained significant attention for various applications, such as sensing, catalysis, and energy. While graphene–silver and other similar combinations have been extensively explored, the synthesis of nanocomposites based on antimony and noble metals (such as silver and gold) remains unexplored. In this study, we introduced an approach for preparing silver nanoparticle (AgNP)-decorated antimony trioxide nanocomposites (Sb2O3–Ag) with exceptional catalytic properties. These nanocomposites, synthesized rapidly using antimonene (AM) and Ag+ precursors under microwave-assisted heating, exhibited promising catalytic performance. Characterization techniques, including transmission electron microscopy (TEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and Fourier transform infrared (FTIR), confirmed the formation of Sb2O3–Ag nanocomposites, showcasing AgNPs dispersed on the surface of large irregular Sb2O3 particles. Evaluation of catalytic activity using p-nitrophenol (PNP) degradation revealed a rapid elimination rate of approximately 91.6% within 2 s. Several experimental parameters, such as the ratios of AM and Ag+ concentrations and the catalyst amount, were optimized to establish the best reaction conditions for PNP degradation. Furthermore, the sustained catalytic activity of Sb2O3–Ag nanocomposites over 1 month underscores their potential for long-term applications. Analysis through electron paramagnetic resonance spectroscopy suggests the generation of hydroxyl radicals responsible for PNP decomposition, supported by a proposed degradation pathway using electrospray ionization mass spectrometry. This study not only introduces a bimetallic nanomaterial based on Sb and Ag but also provides a sustainable solution for organic pollutant degradation.
✓ 已验证
DOI
NANOTECHNOLOGY
·
2020
·Vol. 31
·期 37
·375603
·
IF 3.551
Guoyue Qiao,Qinqin Xu,Aiqin Wang,Dan Zhou,Jianzhong Yin
Herein, the desorption effect of supercritical CO2 (scCO2) was utilized to obtain sub-5 nm Ag nanoparticles (NPs) with a high Ag loading in SBA-15. The size of the Ag NPs decreased from 3.54 ± 0.79 nm (Ag loading of 25.3 wt.% wt.%) to 2.38 ± 0.68 (Ag loading of 10.5 wt%) nm by changing the depressurization curve from 0.1 MPa min−1 (20–14 MPa) to 3 MPa min−1 (20–12 MPa). Meanwhile, the intensity of the crystalline Ag characteristic peaks was obviously higher than the latter sample from the x-ray diffraction (XRD) patterns. However, compared with the adsorption kinetics of the two precursors of AgNO3 and Cu(NO3)2 on SBA-15, under the same deposition and depressurization conditions, when the two depositional systems used water as a co-solvent, the time taken to reach the adsorption equilibrium of Ag+ on the supports was longer than the time taken by Cu2+, which existed in the water as [Cu(H2O)4]2+. The surface of SBA-15 was hydrophilic, and then the interaction of Ag+ and the surface was weaker compared with Cu2+, making Ag+ highly dispersed on the surface under the scCO2 desorption effect. After calcination, the size of the Ag NPs decreased, but the morphology of CuO was mainly characterized by nanorods (NRs). Moreover, by comparing the experiments of wetness impregnation, the dispersion ability of the bulk scCO2 of the reactor was inefficient for Ag+ adsorbed on the channels in the depressurization process.
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）