ACS Applied Materials & Interfaces
·
2023
·
IF 9.5
Qia Zhang,JianXiong Zou,Jin Ai,XiaoTian Pan,DongHong Qiao,Seong Chan Jun,Vijaykumar V. Jadhav,Ling Kang,Chun Huang,Jian Zhang
The current collector serves as a crucial element in supercapacitors, acting as a medium between the electrode material and the substrate. Due to its excellent conductivity, a metal collector is typically favored. Enhancing the binding strength between the collector and the substrate as well as between the collector and the electrode material has emerged as a critical factor for enhancing the capacitance performance. In this study, a Ag film with a grass root-like structure was initially grown on a PI substrate through the surface modification and ion exchange (SMIE) process. This Ag interlocking structure contributes to strong binding between the PI substrate and Ag without compromising the mechanical properties of the Ag film. To further enhance the electrochemical properties at low scan rates, electroless-plated Cu was subsequently deposited on the Ag film to form the Cu/Ag current collector. Moreover, the Cu within the Cu/Ag current collector served as a precursor for the growth of FeOOH–Cu(OH)2 via a two-step in situ method. The resulting FeOOH–Cu(OH)2/Cu/Ag structure as a whole is binder-free. Supercapacitors employing symmetric FeOOH–Cu(OH)2/Cu/Ag structures were assembled, and their energy storage properties were investigated. The solution-based low-temperature process used in this study offers the potential for cost-effective and large-scale applications.
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高影响因子
WATER RESEARCH
·
2022
·
IF 13.4
Cheng Hou,Xinbai Jiang,Dan Chen,Xiaoyu Zhang,Xiaodong Liu,Yang Mu,Jinyou Shen
Due to the pivotal role of Ag-TiO 2 /biofilm/nitrate interface, enhanced visible light-assisted biodegradation of tetracycline (TC) in anoxic system was realized through both batch experiment and long-term operation in this study. The results of the batch experiment elucidated that 50 mg L −1 TC could be completely removed within 10 h in Ag-TiO 2 /biofilm/nitrate system. The continuous flow experiment was operated for 75 d to evaluate the performance and stability of Ag-TiO 2 /biofilm/nitrate system. TC removal efficiency in Ag-TiO 2 /biofilm/nitrate system was as high as 92.4 ± 1.6% at influent TC concentration of 50 mg L −1 TC and hydraulic retention time (HRT) of 10 h, which would be attributed to the promoted separation of photoholes and photoelectrons at the presence of nitrate as electron acceptor. Facilitated electron transfer between semiconductor and biofilm was beneficial for enhancing TC biodegradation, thus lowering toxicity of intermediate products and promoting microbial activity. Moreover, the species related to TC biodegradation ( Rhodopseudomonas, Phreatobacter and Stenotrophomonas ), denitrification ( Thauera ) and electron transfer ( Delftia ) were enriched at Ag-TiO 2 /biofilm/nitrate interface. Besides, a possible mechanism involved in enhanced TC degradation and nitrogen removal at Ag-TiO 2 /biofilm/nitrate interface was proposed. This study provided a novel and promising strategy to enhance recalcitrant TC removal from industrial wastewater.
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高影响因子
TALANTA
·
2018
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IF 4.244
Miao Wang,Kun Su,Jing Cao,Yongxin She,A.M. Abd El-Aty,Ahmet Hacımüftüoğlu,Jing Wang,Mengmeng Yan,Sihui Hong,Shuibing Lao,Yanli Wang
Here, we developed a novel non-enzymatic rapid testing method for determination of organophosphate pesticide (malathion) in water. In principle, target molecule can block the Fluorescence resonance energy transfer (FRET) between chemical fluorescent probe (energy donor) and β-cyclodextrin-coated silver nanoparticles (@AgNP) (receptor). The effects of malathion on the dynamics of fluorescent probe and β-cyclodextrin@AgNP were evaluated and their properties were further characterized. The current methodology showed a good sensitivity of 0.01 μg/mL represented as a limit of detection (LOD) and the calibration curve was linear over the concentration range of 0.1–25 μg/mL. Recovery rate from water samples spiked at 3 different concentration levels (0.3, 0.4, and 0.6 μg/mL) showed satisfactory range between 83% and 101%.
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高影响因子
Journal of Water Process Engineering
·
2021
·
IF 5.485
Boya Ma,Wenjing Lv,Jinying Li,Chunwei Yang,Qian Tang,Dong Wang
Aniline is a refractory pollutant with high toxicity that will cause pollution if discharged without treatment. However, conventional technology cannot meet the requirements of safe disposal. It is necessary to develop novel treatment technology to address this problem, and the electro-Fenton process could be a solution. In this study, a novel CNT-Ag@Cu cathode was synthesized by Ag doping and multiwall carbon nanotube (CNT) 3D morphology modification of copper foam (CF). The composition, structure and morphology of CNT-Ag@Cu were obtained. The aniline removal rate was over 99% under optimal conditions. The kinetic analysis results indicated that aniline removal followed a pseudo-first-order kinetic law, and the reaction rate constant reached 0.0661 min −1 . The aniline removal rate also reached 99.2% after the CNT-Ag@Cu cathode was used 10 times without further treatment. The CNT-Ag@Cu cathode had an excellent ability to maintain an OH concentration that reached 0.5 μmol/L after 60 min of reaction. Aniline removal is a coupling multimechanism in which Ag loading improves H 2 O 2 generation and the nanoconfinement effect of CNTs promotes accumulation of a high concentration of OH.
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高影响因子
BIOSENSORS & BIOELECTRONICS
·
2018
·
IF 8.173
Chunyan Zhang,Shuan Zhang,Yilei Jia,Yueyun Li,Ping Wang,Qing Liu,Zhen Xu,Xinjin Li,Yunhui Dong
An ultrasensitive sandwich-type electrochemical immunosensor was designed by using gold nanoparticles (Au NPs) as the substrate material and microporous carbon spheres (CS) loading silver nanoparticles (Ag NPs) spaced Hemin/reduced graphene oxide (Hemin/rGO) porous composite materials (Ag NPs@CS-Hemin/rGO) as the detection antibodies (Ab 2 ) label for detecting carcinoembryonic antigen (CEA). The Au NPs with good electrical conductivity and biocompatibility could accelerate the electron transfer on the electrode interface and enhance the load capacity of capture antibodies (Ab 1 ). Hemin is peroxidase-like substance which has excellent catalytic ability for H 2 O 2 reduction but easy to molecular aggregation and oxidative self-destruction. Reduced graphene oxide (rGO) is a good supporting material for Hemin to mitigate this disadvantage. CS loading Ag NPs (Ag NPs@CS) as the spacer inserts into Hemin/rGO sheet can overcome the irreversible stacking of rGO, and form complex porous structure which exposes more active sites of Hemin. Moreover, Ag NPs loaded on CS also has catalytic ability for H 2 O 2 reduction. Thus the Ag NPs@CS-Hemin/rGO used as the Ab 2 label has a large working surface area and high utilization rate, which heightens the catalytic ability for H 2 O 2 reduction to amplify the current signal effectually. The current signal and the logarithm of CEA concentration presented a wide linear response range of 20 fg/mL to 200 ng/mL, and the detection limit of CEA was 6.7 fg/mL. Furthermore, the designed immunosensor exhibited a good reproducibility, selectivity and stability, which confirms a broad development prospect when applying it in early clinical detection.
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高影响因子
MICROCHEMICAL JOURNAL
·
2024
·
IF 4.9
Jie Shi,Xiaoqing Huang,Jiangtao Xu
Island-shaped Ag nanoparticles are prepared under the support platform of quartz fabric by a simple chemical deposition method. The prepared flexible SERS substrate in this study demonstrates highly sensitive, excellent signal reproducibility and stability. The enhancement ability can be adjusted by varying concentration of Ag + during synthesizing process, which would lead to the variation of size and gaps of Ag nanoparticles , thus affecting the LSPR effect. Moreover, the prepared SERS substrate shows great practical potential in rapid detection of contaminated fruit with different sampling method.
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高影响因子
Arabian Journal of Chemistry
·
2024
·
IF 5.3
Wen Liu,Baizhi Su,Hua Song,Xueyun Zhang,Guodong Ren,Xuewei Wang,Lili Yan,Sufang Ma,Lihong Li,Lixia Guo,Shuming Xu,Boye Zhang,Haipeng Diao,Zhifang Wu,Sijin Li,Chengwu Zhang
Staphylococcus aureus has become one of the most common pathogens in clinical tissue infection, and it is easy to form biofilm. Incomplete removal of biofilms often leads to recurrent infections, and more serious is the possibility of bacteria developing drug resistance. Therefore, the effective eradication of refractory biofilms is essential. Herein, a temperature-sensitive hydrogel was prepared by doping the photothermal carbon dots (PTCDs) chelated by Ag + , and the AIPH which could produce alkyl radicals in response to heat into the thermodissolved gelatin. Under the irradiation of 660 nm laser, the PTCDs generated heat to dissolve the hydrogel, and promoted chelation of silver ions in PTCDs for chemical sterilization. Meanwhile, the heat generated by the PTCDs induced the 2,2′-azobis[2-(2-imidazolin-2-yl) propane] dihydrochloride (AIPH) to produce alkyl free radical sterilization, achieving the purpose of photothermal/thermodynamic/chemical synergistic to kill Staphylococci aureus and destroy its biofilm. Therefore, the biocompatible PTCDs@Ag-AIPH hydrogel proposed in this study was a promising composite that could eliminate biofilms and promoted wound healing, showing good potential in future biomedical applications.
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ADVANCED FUNCTIONAL MATERIALS
·
2021
·Vol. 31
·期 24
·2101927
·
IF 18.808
Yuancai Gong,Ruichan Qiu,Chuanyou Niu,Junjie Fu,Erin Jedlicka,Rajiv Giridharagopal,Qiang Zhu,Yage Zhou,Weibo Yan,Shaotang Yu,Jingjing Jiang,Sixin Wu,David S. Ginger,Wei Huang,Hao Xin
The large open-circuit voltage deficit ( V oc,def ) is the key issue that limits kesterite (Cu 2 ZnSn(S,Se) 4 , [CZTSSe]) solar cell performance. Substitution of Cu + by larger ionic Ag + ((Ag,Cu) 2 ZnSn(S,Se) 4 , [ACZTSSe]) is one strategy to reduce Cu–Zn disorder and improve kesterite V oc . However, the so far reported ACZTSSe solar cell has not demonstrated lower V oc,def than the world record device, indicating that some intrinsic defect properties cannot be mitigated using current approaches. Here, incorporation of Ag into kesterite through a dimethyl sulfoxide (DMSO) solution that can facilitate direct phase transformation grain growth and produce a uniform and less defective kesterite absorber is reported. The same coordination chemistry of Ag + and Cu + in the DMSO solution results in the same reaction path of ACZTSSe to CZTSSe, resulting in significant suppression of Cu Zn defects, its defect cluster [2Cu Zn + Sn Zn ], and deep level defect Cu Sn . A champion device with an efficiency of 12.5% (active area efficiency 13.5% without antireflection coating) and a record low V oc,def (64.2% Shockley–Queisser limit) is achieved from ACZTSSe with 5% Ag content.
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RSC Advances
·
2025
·Vol. 15
·期 38
·31508-31521
·
IF 4.6
Donghai Li,Yunrui Xu,Shilin Zhang,Linping Wang
To improve the utilization of solar energy and the efficiency of photocatalytic organic pollutant degradation, novel Z-scheme heterojunctions with high visible light catalytic performances have been widely developed. Herein, a novel Z-scheme BiFeO3/Ag/g-C3N4 heterojunction with a hierarchical 1D/0D/2D structure and visible light absorption was constructed by matching the suitable band structure between 1D BiFeO3 and 2D g-C3N4 and employing the localized surface plasmon resonance (LSPR) effect of 0D Ag nanoparticles. BiFeO3 nanofibers were synthesized via the electrospinning technique, providing short electron transport paths and visible light absorption range for g-C3N4. Plasmonic Ag nanoparticles were photodeposited on the surface of BiFeO3 to enhance the separation efficiency of the photogenerated electron–hole pairs between the bulk interfaces. UV-vis DRS, PL, photocurrent and EIS spectra confirmed the important roles of Ag and BiFeO3 in improving the photocatalytic activity of the Z-scheme heterojunction. The working principle of the BiFeO3/Ag/g-C3N4 Z-scheme heterojunction was proposed, indicating that ˙O2− and ˙OH are the main active species for the photocatalytic degradation of methylene blue (MB). The prepared BiFeO3/Ag/g-C3N4 heterojunction exhibited the highest photocatalytic activity, where its rate constant was 5.84 times higher than that of the pristine BiFeO3 and 3.26 times higher than that of the pristine g-C3N4. This study offers a new means for the design of novel high-performance photocatalysts, which can be a promising candidate in industrial applications.
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高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2026
·
IF 19.9
Qi-Hua Yang,Han-Qi Wei,Gui-Hua Li,Shu-Juan Zhao,Zheng-Xiang Cai,Yu-Chen Ao,Qing-Hua Mi,Wen-Jun Wang,Ge-Mei Cai,Xiao-Long Chen
X-ray imaging plays an irreplaceable role in global security inspection, medical diagnostics, and industrial nondestructive testing, yet conventional single-crystal scintillators suffer from high costs, complex fabrication, and poor flexibility. Here, we report a flexible x-ray scintillator film (Cs 3 Cu 2 I 5 :Ag@PE) that uniquely combines industrial-scale processability with ultra-high luminescence efficiency. Ag doping can cause lattice expansion and increase material density, boosting x-ray absorption and luminescence. Notably, the film is fabricated via scalable ball milling and industrial blown film extrusion. Compared to a maximum quantum efficiency of 43.3% typically achieved via the micropatterned method, our large-scale extrusion strategy delivers a remarkable PLQY of 75.4%. The film also exhibits excellent stability (89.6% retention after 2000 h) and radioluminescence efficiency comparable to commercial LuAG:Ce. Furthermore, it achieves an ultra-low detection limit of 212.5 nGy/s and a superior spatial resolution 175% higher than commercial CsI:Tl. This work highlights a scalable and highly efficient route toward high-performance flexible x-ray imaging for clinical and industrial applications.
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高影响因子
MICROCHIMICA ACTA
·
2023
·Vol. 190
·期 7
·1-9
·
IF 5.7
Wang Wenxi,Ruan Shuyan,Su Zhixiong,Xu Peipei,Chen Yujia,Lin Zheng,Chen Jingbo,Lu Yudong
A novel S-CNF-based nanocomposite was created using sulfonated cellulose nanofiber (S-CNF) to enable the detection of NADH in serum by surface-enhanced Raman spectroscopy (SERS). The numerous hydroxyl and sulfonic acid groups on the S-CNF surface absorbed silver ions and converted them to silver seeds, which formed the load fulcrum. After adding a reducing agent, silver nanoparticles (Ag NPs) were firmly adhered to the S-CNF surface to form stable 1D “hot spots.” The S-CNF-Ag NP substrate demonstrated outstanding SERS performance, including good uniformity with an RSD of 6.88% and an enhancement factor (EF) of 1.23 × 10 7 . Owing to the anionic charge repulsion effect, the S-CNF-Ag NP substrate still maintains remarkable dispersion stability after 12 months of preservation. Finally, S-CNF-Ag NPs’ surface was modified with 4-mercaptophenol (4-MP), a special redox Raman signal molecule, to detect reduced nicotinamide adenine dinucleotide (NADH). The results showed that the detection limit (LOD) of NADH was 0.75 μM; a good linear relationship ( R 2 = 0.993) was established in the concentration range 10 −6 – 10 −2 M. The SERS nanoprobe enabled rapid detection of NADH in human serum without any complicated sample pretreatment and provides a new potential to detect biomarkers. Graphical
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APPLIED SURFACE SCIENCE
·
2012
·
IF 2.103
Zhongbo Li,Guowen Meng,Ting Liang,Zhuo Zhang,Xiaoguang Zhu
We report a facile low-cost synthetic approach to large-scale Ag nanosheet-assembled films with a high density of uniformly distributed sub-10 nm gaps between the adjacent nanosheets on Si substrates via galvanic cell reactions. The distribution density of Ag nanosheets on substrates could be tailored by tuning the duration of the HF-etching and the concentration of citric acid in the solution. Furthermore, in conjunction with a conventional photolithography, highly uniform patterned Ag nanosheet-assembled structures with different morphologies can be achieved on Si substrates via galvanic-cell-induced growth. By using rhodamine 6G as a standard test molecule, the large-scale Ag nanosheet-assembled films exhibit highly active and homogenous surface-enhanced Raman scattering (SERS) effect and also show promising potentials as reliable SERS substrates for rapid detection of trace polychlorinated biphenyls (PCBs).
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危险品化学品经营许可证（带存储）