JOURNAL OF THE ELECTROCHEMICAL SOCIETY
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2022
·Vol. 169
·期 9
·096518
·
IF 4.386
Xiangyu Meng,Zhihuan Wang,Guoliang Yu,Xinbin Wang,Yingjie Chen,Liyan Yu,Lifeng Dong
Rational design of surface plasmon-enhanced electrocatalysts can effectively integrate solar energy into fuel cells. Herein, iron and nitrogen codoped carbon (Fe/NC) nanoparticles synthesized with microemulsion are used to absorb and photo-reduce Ag ions in solutions to form Ag nanoparticles on Fe/NC (Ag-Fe/NC). Different Ag-Fe/NC materials are prepared by adjusting the concentration of AgNO3 solution. Among them, Ag-Fe/NC obtained with 0.5 mg ml−1 AgNO3 solution shows the highest oxygen reduction reaction (ORR) catalytic performance and light-enhanced ORR characteristics, even better than commercial Pt/C. Besides, Ag-Fe/NC displays excellent long-term stability and high methanol resistance for ORR performances in alkaline medium. Therefore, this study will provide a new method for integrating light to recover Ag ions in solutions and improve electrocatalytic properties.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2021
·
IF 8.128
Chunxue Li,Yidong Zhao,Xiaoteng Liu,Pengwei Huo,Yongsheng Yan,Lili Wang,Guangfu Liao,Chunbo Liu
The design and development of high-performance photocatalysts from three aspects of simultaneous enhancement of light harvest, carrier migration rate, and redox reaction rate is still a great challenge. Herein, a novel Co 9 S 8 /CdIn 2 S 4 ohmic junction with a robust internal electric field (IEF) is successfully prepared via hydrothermal and in situ synthesis methods and is used for effective photocatalytic H 2 evolution (PHE). Under simulated visible light irradiation, the PHE rate of 5% Co 9 S 8 /CdIn 2 S 4 can reach 1083.6 μmol h −1 g −1 , which is 6.4 times higher than that of CdIn 2 S 4 (170.5 μmol h −1 g −1 ). The enhanced PHE performance is mainly ascribed to the improved light harvest and carrier separation efficiency and fast surface H 2 evolution kinetics. Moreover, Co 9 S 8 nanotubes serve as promising Co-based cocatalysts that can evidently enhance PHE activity. Additionally, Co 9 S 8 /CdIn 2 S 4 shows superior stability because the photogenerated carrier transfer path restrains the photocorrosion behavior. The photocatalytic mechanism is proposed based on experimental results and DFT calculations. This work offers new insights for the design and development of highly active photocatalysts from interface engineering.
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ELECTROCHIMICA ACTA
·
2017
·
IF 4.798
Yaohua Yang,Kai Yan,Jingdong Zhang
A Ni(OH) 2 /TiO 2 photoanode possessing high photoelectrocatalytic activity toward glucose oxidation driven by visible light was fabricated. The results indicated that deposition of Ni(OH) 2 on TiO 2 film electrode could remarkably promote the catalytic oxidation of glucose under visible light illumination. By applying a low voltage, the Ni(OH) 2 /TiO 2 electrode showed a linear photoelectrochemical response to glucose in the concentration range from 0.5 μM to 20 μM. Furthermore, the high photoelectrocatalytic activity of Ni(OH) 2 /TiO 2 electrode toward glucose oxidation was utilized to construct a glucose-air photofuel cell, which generated electrical signal responding to glucose concentration from 5 μM to 100 μM, without using external electrical power supply. Thus, dual non-enzymatic glucose sensors based on photocatalytic oxidation of glucose on the Ni(OH) 2 /TiO 2 electrode under visible light illumination were demonstrated.
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NANO
·
2018
·
IF 1.1
Yanan Li,Zhongmin Liu,Yaru Li,Yongchuan Wu,Jitao Chen,Yanjun Liu,Ping Na
The Bi 2 S 3 -TiO 2 -RGO composites were synthesized by a facile one-step hydrothermal method and applied for the photocatalytic degradation of Rhodamine B (Rh B) under the visible light. The Bi 2 S 3 -TiO 2 -RGO composites were characterized by transmission electron microscopy, X-ray diffraction, Raman and Fourier transform infrared spectrometer. The results indicated that the Bi 2 S 3 -TiO 2 -RGO composites were successfully prepared, and Ti-O-C and S-C bonds were existing among Bi 2 S 3 , TiO 2 as well as RGO. Furthermore, the photocatalytic ability of Bi 2 S 3 -TiO 2 -RGO composites was excellent under visible light due to its responding to the whole visible light region, low recombination rate of photogenerated electron–hole pairs and relatively negative conduction band. Rh B photocatalytic degradation rate was 99.5% after 50 min and still could reach 98.4% after five cycles. Finally, a formation mechanism as well as a photocatalytic mechanism of Bi 2 S 3 -TiO 2 -RGO composites were proposed based on the experimental results.
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MATERIALS CHEMISTRY AND PHYSICS
·
2020
·
IF 3.408
Jun Liu,Lei Qiu,Meng-Jie Chang,Bin Yuan,Meng Sun,Si-Meng Fan,Wen-Na Cui,Qian Hui,Fu-Rong Ni,Min-Yu Li,Ya-Qing Li,Zhen-Min Luo
Novel fibrous BiVO 4 /CdS heterostructures were fabricated for photodegradation of Rhodamine B (RhB) dyes. Caterpillar shaped BiVO 4 nanofibers were produced by electrospinning and post calcinations . Controllable quantity of CdS nanoparticles were uniformly decorated on BiVO 4 fiber surface by electrostatic interaction . Both the BiVO 4 nanofibers and CdS nanoparticles present high crystallinity . The integration of CdS can significantly enhance the absorption of visible light and separation efficiency of photo-generated charge in BiVO 4 /CdS composites. As a result, the photocatalytic efficiency and apparent reaction rate constant of the optimized BiVO 4 /CdS-2 display 1.6 and 3 times as high as that of pure BiVO 4 after 120 min irradiation under visible light, respectively. Moreover, the BiVO 4 /CdS-2 nanofibers show good stability for repeated visible light photocatalytic application. The scavengers added photocatalytic experiments indicate the crucial roles of •O 2 − and h + for the degradation process, and a Z-scheme photocatalytic mechanism was proposed for the BiVO 4 /CdS system. Due to the simple and low-cost synthetic method, the fibrous BiVO 4 /CdS catalysts are suitable for practical applications.
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NANOTECHNOLOGY
·
2021
·Vol. 32
·期 50
·505208
·
IF 3.874
Xin Zhai,Peng Dong,Wenxian Wang,Jing Jia,Lifang Hu,Guodong Feng
Silver nanowires (AgNWs) have been considered as one of the most promising flexible transparent electrodes (FTEs) material for next-generation optoelectronic devices. However, the large contact resistance between AgNWs could deteriorate the conductivity of FTEs. In the present work, high-performance AgNWs FTEs were obtained by means of focused-light-scanning (FLS), which could lead to the large-area, rapid and high-quality welding between AgNWs within a short time, forming the reliable and stable AgNWs network. The results of the optoelectronic tests show that after FLS, the sheet resistance of the AgNWs FTEs sharply decreased from 5113 Ω/sq to 7.7 Ω/sq, with maintaining a high transmittance (∼94%). Finally, a high-performance flexible transparent heater was fabricated by using FLS, showing reach a relatively high temperature in a short response time and rapid response at low input voltage. The findings offer an effective pathway to greatly improve the conductivity of AgNWs FTEs.
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Acta Pharmaceutica Sinica B
·
2026
·
IF 14.6
Ruiyue Chen,Qianglan Lu,Zhiyong Liu,Su Zhou,Fei Zeng,Shurong Qin,Yi Yin,Yanfeng Gao,Yuzhen Wang,Meng Wang,Yujun Song
Pyroptosis promotes antitumor immunity, yet its efficacy is often constrained by the reliance on indirect signaling cascades, intrinsic cytoprotective mechanisms, and the frequent silencing of gasdermin (GSDM) expression in tumor cells. Here, we develop a precise strategy for activating tumor pyroptosis through the targeted delivery of genetically engineered attenuated Salmonella typhimurium (eVNP, a strain designed to express GSDMD-NT). This platform integrates Near-Infrared (NIR)-triggered pyroptosis induction with Pd 0 -catalyzed autophagy inhibition, thereby achieving spatiotemporal precision and amplified tumor cell death. The eVNP is camouflaged with a hybrid membrane composed of palladium-mineralized tumor cell membranes and vesicular stomatitis virus glycoprotein (VSV-G)-expressing HEK293T cell membranes. This hybrid coating confers homotypic tumor targeting, immune evasion, and pH-responsive membrane fusion, facilitating cellular internalization. Upon NIR irradiation, a heat-inducible promoter drives GSDMD-NT expression, leading to bacterial self-lysis and the subsequent release of GSDMD-NT into the cytoplasm to initiate pyroptosis. Concurrently, Pd 0 -catalyzed bioorthogonal reaction activates autophagy inhibitors, suppressing autophagy and amplifying pyroptotic cell death. In vivo , this system achieves tumor suppression and reprograms the immunosuppressive tumor microenvironment, offering a robust and integrative strategy for advancing cancer immunotherapy. A hybrid membrane-camouflaged bacterial platform achieves NIR-triggered pyroptosis and Pd 0 -catalyzed autophagy inhibition, establishing a self-amplifying cascade that synergistically enhances antitumor immunity and tumor eradication. Download: Download high-res image (304KB) Download: Download full-size image
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CHINESE JOURNAL OF CHEMISTRY
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2011
·Vol. 29
·期 9
·1985-1988
·
IF 0.773
Cunyuan Lai,Wenjuan Guo,Xinde Tang,Guangyou Zhang,Qiwei Pan,Meishan Pei
A novel conjugated polythiophene derivative with polymethacrylate attaching to the polymer backbone via an alkyl spacer was successfully synthesized. A methacrylate-substituted thiophene monomer, 3-(hexyl methacrylate)thiophene was prepared and polymerized by free radical polymerization, followed by an electrochemical polymerization. The resulting polymer as a yellow-green-light emitter, has potential applications in photoelectronics area.
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JOURNAL OF ALLOYS AND COMPOUNDS
·
2021
·
IF 5.316
Pu Fan,Zefeng Xu,Qi Luo,Zongjie He,Yuhui Chen,Qiqi Miao,Cong Huang,Xiaoguang Liu,Ling Li
Phosphor-converted white LEDs are realized by combining blue InGaN chips with yellow and red emitting materials. Due to the lack of efficient red phosphor materials, we can design a broadband yellow phosphor material containing as many red components as possible. We found an abnormal broadband yellow-emitting Ba 2 CaB 2 Si 4 O 14 :Eu 2+ borosilicate phosphor inspired by natural minerals, which has been synthesized by traditional high temperature solid-state method. The structural information and photoluminescence characteristics of Ba 2 CaB 2 Si 4 O 14 :Eu 2+ were characterized in detail, and applied to the fabrication of white LED devices. Excited by near ultraviolet light at 365 nm, it displays a wide emission band from 400 to 800 nm centered on the 595 nm peak. White LED devices were fabricated by physically mixing the yellow phosphor Ba 2 CaB 2 Si 4 O 14 :Eu 2+ and synthesized blue phosphor BaMgAl 10 O 17 :Eu 2+ with 365 nm UV chip as excitation. The correlation color temperature (CCT) value and the chromaticity coordinates of the fabricated WLED devices were found to be 5522 K and (0.3293, 0.3036) respectively. In conclusion, Ba 2 CaB 2 Si 4 O 14 :Eu 2+ has great potential in the preparation of near UV excited white LEDs.
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CARBOHYDRATE POLYMERS
·
2019
·
IF 6.044
Ming Li,Shiyu Fu,Altaf Halim Basta
Light-induced shape-memory polymer (LSMP) materials have advantages of remote control and precise stimulation under suitable photoactive factors. The excellent performance, stability, and low cost are significant for LSMP materials. Herein, a novel stable and cheap LSMP was prepared with polyurethane (PU) and copper sulfide nanoparticles (CuS NPs) supported on modified cellulose nanocrystals (MCNC) (CuS NPs@MCNC). For the photosensitivity, CuS NPs were formed and assembled on MCNC without other additives. These prepared LSMP films exhibited good light-induced shape memory, which was ascribed to the highly photothermal effect of CuS NPs. We found that the shape recovery ratio was 97.4 % when the PU nanocomposite film containing 0.2 wt.% CuS NPs@MCNC was irradiated by near-infrared (NIR) for 21 s. The ratio was still over 85.7 % after five times of repeat test. These LSMPs contained CuS NPs@MCNC have potential to be applied as a prospective material for medical devices and new packaging.
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WATER RESEARCH
·
2020
·
IF 9.13
Wanjun Wang,Hanna Wang,Guiying Li,Po Keung Wong,Taicheng An
The development of “green” water disinfection technology utilizing solar energy is highly desired but remains challenging. In this study, sulfate radical (•SO 4 − )-mediated bacterial inactivation was first attempted by using Fe 3 O 4 -based magnetic hydrochar (MHC) as a recyclable catalyst for persulfate (PS) activation under visible light (VL) irradiation. Complete treatment of 8.0 log E. coli cells was reached within 40 min in VL/PS/MHC system, compared with that of only 2.0 log-reduction was obtained in the PS/MHC system under the same conditions. The system was applicable in wide range of pH (3.0–9.0), and increasing dissolved O 2 could further promote the efficiency. A three-route mechanism was proposed, in which the PS activation by ≡Fe(II) of Fe 3 O 4 and photo-generated electron captured by PS were the major processes. The bacterial cell lesion process was found to be triggered directly via •SO 4 − , which caused the damage of outer membrane, followed by up-regulation of intracellular ROSs and destroy of chromosomal DNA, finally leading to irreversible cell death. Moreover, the VL/PS/MHC system is also effective to inactivate versatile pathogenic bacteria including P. aeruginosa and S. aureus . As a proof-of-concept, our study provides meaningful information to advance the areas of “green” water disinfection technology which can be realized by recyclable photocatalytic systems using solar energy.
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JOURNAL OF CLUSTER SCIENCE
·
2020
·Vol. 32
·期 5
·1205-1211
·
IF 1.731
Xu Chanchan,Lv Le,Zhang Zhijuan,Liu Wei
In this paper, a series of light-emitting copper(I) iodide inorganic–organic hybrid clusters has been synthesized, and they are 0D-Cu 2 I 2 ( fmp ) 4 ( 1 , fmp = 3-fluoro-5-methyl-pyridine), 0D-Cu 2 I 2 ( iq ) 4 ( 2 , iq = isoquinoline), 0D-Cu 2 I 2 ( ni ) 4 ( 3 , ni = nicotinonitrile). They are all molecular clusters with Cu 2 I 2 rhomboid dimer core which is the result of steric hindrance of organic ligands. The emissions of these compounds range from green to red in the solid state. The band gaps and emission energies of these compounds could be tuned by selecting different organic ligands. These compounds are solution processable and could be coated onto various substrates as luminescent inorganic–organic hybrid coating materials.
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危险品化学品经营许可证（带存储）