ACS Applied Energy Materials
·
2022
·
IF 6.959
Jing Dong,Wenjian Fang,Hui Yuan,Weiwei Xia,Xianghua Zeng,Wenfeng Shangguan
Studies on highly efficient noble-metal-free catalysts are regarded as an important task for H2 production by water-splitting. MoS2/ZnCdS/ZnS dual heterostructures were successfully prepared with respective supernatant MoS2 colloidal solutions (called M/ZC/Z) and MoS2 precipitates (M(p)/ZC/Z). Scanning electron microscopy (SEM) and transmission electron microscopy (TEM) images of the M/ZC/Z sample showed that ZnS nanosheets were decorated with ZnCdS nanorods and few-layered MoS2. Then, photocatalytic hydrogen production study was performed and the results showed that the M/ZC/Z sample has a H2 evolution rate of up to 79.3 mmol g–1 h–1 under visible light irradiation with an apparent quantum efficiency of 47.9% at 420 nm with noble-metal-free catalysts, which is nearly 5 times that of the M(p)/ZC/Z sample (15.7 mmol g–1 h–1) and approximately 9 times that of the ZC/Z sample (8.98 mmol g–1 h–1). Cycle tests showed that M/ZC/Z is stable and reusable. Without sacrificial agents, the production rates for hydrogen and oxygen evolution were obtained as 3.15 and 1.55 mmol g–1 h–1, respectively. Time-resolved photoluminescence spectra revealed that the well-matched structure is effective in the separation and transfer of photogenerated electron and hole pairs, leading to the enhancement of the photocatalytic H2 production activity.
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高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2021
·
IF 6.953
Jun Gu,Shuaifeng Zhang,Xuefeng Xia,Xuehan Zhang,Baochao Fan,Junming Zhou,Haodan Zhu,Wei Wang,Xianghui Qi,Li Li,Bin Li
In this work, an edible cellulose-based antibacterial material was prepared by cross-linking α-cellulose and kanamycin sulfate via glutaraldehyde to form kanamycin sulfate-glutaraldehyde-cellulose. Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy and X-ray diffraction results indicated that the kanamycin sulfate molecule was cross-linked with the molecular chain of cellulose. The optimal mass ratio of kanamycin sulfate to α-cellulose was 1:100 and the degree of substitution reached 1.11%. The optimal kanamycin sulfate-glutaraldehyde-cellulose material showed an excellent inhabitation against both Gram-positive and Gram-negative bacteria. Meantime, the optimal kanamycin sulfate-glutaraldehyde-cellulose had a marked resistance to gastric acid and had low cell cytotoxicity. To promote the application of the kanamycin sulfate-glutaraldehyde-cellulose material, the porous microspheres were prepared via the sol-gel method. The particle size of the homogeneous porous microspheres is mainly distributed between 1.5 and 2.0 μm. Therefore, the kanamycin sulfate-glutaraldehyde-cellulose described herein is a potential edible, eco-friendly, potent, stable, inexpensive, and antibacterial carrier material for delivering drugs, proteins, or vaccines.
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高影响因子
Advanced Science
·
2020
·Vol. 7
·期 10
·1903644
·
IF 15.84
Haozheng Li,Yong Cheng,Huajun Tang,Yali Bi,Yage Chen,Guang Yang,Shoujing Guo,Sidan Tian,Jiangshan Liao,Xiaohua Lv,Shaoqun Zeng,Mingqiang Zhu,Chenjie Xu,Ji-Xin Cheng,Ping Wang
Numerous mechanisms have been proposed for polymerization to provide qualitative and quantitative prediction of how monomers spatially and temporally arrange into the polymeric chains. However, less is known about this process at the molecular level because the ultrafast chemical reaction is inaccessible for any form of microscope so far. Here, to address this unmet challenge, a stimulated Raman scattering microscope based on collinear multiple beams (COMB-SRS) is demonstrated, which allows label-free molecular imaging of polymer synthesis in action at speed of 2000 frames per second. The field of view of the developed 2 kHz SRS microscope is 30 × 28 µm 2 with 50 × 46 pixels and 7 µs dwell time. By catching up the speed of chemical reaction, COMB-SRS is able to quantitatively visualize the ultrafast dynamics of molecular vibrations with submicron spatial resolution and sub-millisecond temporal resolution. The propagating polymer waves driven by reaction rate and persistent UV initiation are observed in situ. This methodology is expected to permit the development of novel functional polymers, controllable photoresists, 3D printing, and other new polymerization technologies.
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高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2018
·
IF 3.779
Miao Zhang,Renzong Hu,Jiangwen Liu,Liuzhang Ouyang,Jun liu,Lichun Yang,Fang Fang,Min Zhu
Red phosphorus attracts significant interest for lithium-ion batteries due to its high theoretical capacity. Nevertheless, its low electronic conductivity and drastic volume change during cycling limit its further applications. In this study, we fabricate a novel AgP 2 /C nanocomposite by facile ball milling. The nanocomposite anode delivers a high reversible capacity of 785 mA h g −1 at 0.5 A g −1 after 100 cycles and an excellent rate capability with a reversible capacity of 605 mA h g −1 at10 A g −1 in half cells. This excellent electrochemical performance is attributed to the uniform dispersion of amorphous carbon and the synergistic effect of intermediate discharge/charge products. In addition, the LiCoO 2 ‖AgP 2 /C full cell exhibits a stable capacity with an operation potential of ∼2.8 V, indicating the commercial potential of this material in high rate lithium-ion batteries.
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高影响因子
Journal of Materials Chemistry B
·
2022
·Vol. 10
·期 30
·5796-5803
·
IF 7.571
Hao-Chi Hao,Gang Zhang,Ya-Nan Wang,Ru Sun,Yu-Jie Xu,Jian-Feng Ge
In this paper we report a hemicyanine dye that is used to distinguish cancer cells from normal cells with its ability to target different organelles. Probe 1, a red emission hemicyanine functional dye, was connected to oxazolo[4,5-b]pyridine and diethylaminobenzene with a double bond. The maximum absorption peaks of probe 1 were located in the 509–552 nm range in organic solvents. Meanwhile, the probe possessed a high molar extinction coefficient (5.50 × 104 M−1 cm−1 in DMSO) with high photostability. The maximum emission wavelength of the probe ranged from 572 nm to 644 nm, and it also had a large Stokes shift (126 nm in DMSO). In particular, the probe showed weak fluorescence in water (Φ = 0.016), whereas it displayed strong fluorescence at 595 nm in β-cyclodextrin (β-CD) solution (Φ = 0.13). In addition, cell colocalization experiments showed that probe 1 (3 μM) was located in the endoplasmic reticulum in cancer cells, while it could target lysosomes in normal cells. What's more, further cell imaging experiments demonstrated that the average fluorescence intensity of probe 1 (0.3 μM) in cancer cells increased with the addition of β-CD, but it did not occur in normal cells. The study provides a convenient way to distinguish cancer cells from normal ones, which has potential for application in the early detection of cancer.
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高影响因子
ACS Nano
·
2024
·
IF 15.8
Linshan Luo,Zhefei Sun,Yiwei You,Xiang Han,Chaofei Lan,Shanpeng Pei,Pengfei Su,Zhiyong Zhang,Yahui Li,Shaowen Xu,Shengshi Guo,Dingqu Lin,Guangyang Lin,Cheng Li,Wei Huang,Shunqing Wu,Ming-Sheng Wang,Songyan Chen
A commonly used strategy to tackle the unstable interfacial problem between Li1.3Al0.3Ti1.7(PO4)3 (LATP) and lithium (Li) is to introduce an interlayer. However, this strategy has a limited effect on stabilizing LATP during long-term cycling or under high current density, which is due in part to the negative impact of its internal defects (e.g., gaps between grains (GBs)) that are usually neglected. Here, control experiments and theoretical calculations show clearly that the GBs of LATP have higher electronic conductivity, which significantly accelerates its side reactions with Li. Thus, a simple LiCl solution immersion method is demonstrated to modify the GBs and their electronic states, thereby stabilizing LATP. In addition to LiCl filling, composite solid polymer electrolyte (CSPE) interlayering is concurrently introduced at the Li/LATP interface to realize the internal–external dual modifications for LATP. As a result, electron leakage in LATP can be strictly inhibited from its interior (by LiCl) and exterior (by CSPE), and such dual modifications can well protect the Li/LATP interface from side reactions and Li dendrite penetration. Notably, thus-modified Li symmetrical cells can achieve ultrastable cycling for more than 3500 h at 0.4 mA cm–2 and 1500 h at 0.6 mA cm–2, among the best cycling performance to date.
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高影响因子
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
·
2016
·Vol. 23
·期 21
·21369-21376
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IF 2.76
Xu Like,Qian Yanyun,Su Chao,Cheng Weixiao,Li Jianan,Wahlqvist Mark L.,Chen Hong
The wide use of antibiotics in the animal husbandry and the relevant sustainable industries may promote the emergence of antibiotic-resistant bacteria (ARB), which constitutes a growing threat to human health. The objective of this study was to determine the abundance and diversity of sulfonamide- and tetracycline-resistant bacteria within an eco-agricultural system (EAS) in Hangzhou, China. We investigated samples at every link in the EAS, from livestock manure, to biogas residues and biogas slurry, to vegetable and ryegrass fields, to a fish pond. A combination of culture-based and 16S rRNA gene-based sequencing method was used in this study. Within the studied system, the average rate of bacterial resistance to sulfonamide (46.19 %) was much higher than that of tetracycline (8.51 %) ( p < 0.01). There were 224 isolates that were enumerated and sequenced, 108 of which were identified to species level. The genera comprising the sulfamethoxazole-resistant (SMX r ) bacteria were generally different from those of tetracycline-resistant (TC r ) bacteria. Staphylococcus and Acinetobacter were the most dominant genera of SMX r bacteria (19.30 % of the total resistant bacteria) and TC r bacteria (14.04 % of the total resistant bacteria), respectively. Several strains of resistant opportunistic pathogens (e.g., Pantoea agglomerans ) were detected in edible vegetable samples, which may exert a potential threat to both pig production and human health. In general, this study indicates that the EAS is an important reservoir of antibiotic-resistant bacteria, some of which may be pathogenic.
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高影响因子
Journal of Materials Chemistry C
·
2019
·Vol. 7
·期 46
·14625-14631
·
IF 6.641
Jin Wang,Tao Wang,Xinyao Shi,Jian Wu,Yijun Xu,Xianguang Ding,Qiang Yu,Kai Zhang,Pu Zhou,Zongfu Jiang
With the rapidly increasing demands of industrial material processing, biomedical sensing, light detection, and high-speed communication, various novel two-dimensional (2D) materials have been synthesized and employed in ultrafast fiber laser generation due to their advantages of easy processing characteristics, desirable structures and excellent nonlinear optical properties. However, finding an efficient 2D material-based saturable absorber (SA) with the capacity of both high stability and excellent working property performance remains a challenge. Herein, high-quality NiPS3 crystals, from the metal phosphorus trichalcogenide (MPT3) family, were synthesized by a modified chemical vapor transport (CVT) method and a few-layer NiPS3 nanosheet SA was easily obtained using a direct liquid-phase exfoliation method. Different from other 2D materials, ultrathin NiPS3 nanosheets display a good stability. Moreover, a passively Q-switched operation and dual-wavelength mode-locked pulse output were proposed based on a NiPS3-SA erbium-doped fiber (EDF) laser. In the passively Q-switched operation, the maximum peak power was 6.40 mW with a maximum pulse energy of 29.66 nJ. It is also worth noting that dual-wavelength pulse output was achieved in passively mode-locked pulse generation. These results not only supply other choices of SAs for pulse generation, but also provide guidance to extend other possible applications of the MPT3 family for nonlinear optics.
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高影响因子
ACS Applied Materials & Interfaces
·
2021
·
IF 9.229
Bin Sun,Panpan Wang,Liwen Yang,Xiaolin Wei,Yang Jin,Hui Wu
Aqueous zinc (Zn) metal batteries have been widely studied on account of their evident advantages including low cost, good safety, and high energy density. However, problems associted with the Zn anode, such as dendrite formation and corrosion reaction, severely impact the safety and electrochemical performance of a battery. In this work, a bilayer design is constructed on the Zn anode surface to overcome these stubborn issues. A copper nanosheet layer together with a graphene oxide coating constitutes this artificial composite layer, enabling chemical modulation of uniform deposition of the ion flux and simultaneously eliminating the parasitic reaction by a physical barrier. Electrochemical characterization reveals the evident reduced ion nucleation barrier during plating, and the clean Zn anode surface after cycling indicates the inhibition of the corrosion reaction with the reliable shield. As a result, with this dendrite-free modified Zn electrode, both the symmetric cell and the full cell demonstrate remarkable rate and lifespan properties. A long-term cycling life of 2000 h can be realized in the symmetric cell. A high-rate property of 15 A g–1 and better capacity retention are also achieved in the full cell after being coupled with a NaxV2O5 nH2O cathode.
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高影响因子
ACS Applied Materials & Interfaces
·
2020
·
IF 8.758
Fei Hu,Yuyu Li,Ying Wei,Jiayi Yang,Pei Hu,Zhixiang Rao,Xue Chen,Lixia Yuan,Zhen Li
LAGP (Li1.5Al0.5Ge0.5P3O12) is a promising solid-state electrolyte (SSE) for all solid-state lithium-ion batteries (ASS-LIBs) with its favorable lithium ionic conductivity and good performance on inhibiting lithium dendrite. However, the ultrahigh interfacial resistance between lithium metal anode and LAGP SSEs greatly hinders its application. In this work, a thin film of metallic Bi was sputtered on LAGP to improve the chemical/physical properties of the Li/SSE interface. It is found that the Bi buffer not only inhibits the unfavorable reaction between LAGP SSEs and Li metal, but also improved their compatibility. As a result, the Li/LAGP interfacial resistance was effectively reduced from 2255.6 to 92.8 Ω cm2 at 30 °C. Furthermore, a good performance solid state full cell with a LiFePO4 cathode had been demonstrated. This work provides an effective avenue to address the interfacial challenges between Li metal and LAGP SSE.
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高影响因子
ANALYTICAL CHEMISTRY
·
2018
·
IF 6.042
Kaitai Guo,Kai Ni,Xiangxiang Song,Kunxiao Li,Binchao Tang,Quan Yu,Xiang Qian,Xiaohao Wang
Measuring the ion distribution pattern in a drift tube under atmospheric pressure is very useful for studies of ion motion and design of ion mobility spectrometers (IMS); however, no mature method is available for conducting such measurements at present. We propose a simple and low-cost technique for profiling the two-dimensional ion distribution in any cross section of a drift tube. Similar to particle-image velocimetry, we first send sample ions with fluorescence properties into the drift tube and use a receiving plate to collect and accumulate them. Then, the receiving plate is illuminated by exciting light, and the ion distribution appears as a fluorescence image. In this study, Rhodamine 6G was selected as a typical fluorescence-tracer particle. Electrospray ionization (ESI) was chosen as an ionization source to keep the fluorophore undamaged. A plasma-cleaned coverslip was placed at the detection position as a receiving plate. When a layer of ions was collected, the slide was placed under the exciting light with a wavelength of 473 nm. A camera with a 490 nm high-pass light filter was used to capture the fluorescence image representing the ion distribution. The measured-ion detection efficiency of the method was 156 ion/dN, which is equivalent to the level of IonCCD. In addition, we studied the ion-passing characteristics of a Bradbury–Nielsen (BN) ion shutter and the ion-focusing effect in the drift tube using this method. The two-dimensional ion-distribution images behind the ion shutter and the images of the focused ion spot were first observed experimentally. Further theoretical analysis yielded the same conclusions as the experimental results, proving the feasibility of this method and producing a deeper understanding of ion motion in the IMS. This method has promising prospective application to the design, debugging, and optimization of IMS instruments and hyphenated systems.
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高影响因子
SCIENCE OF THE TOTAL ENVIRONMENT
·
2024
·
IF 8.2
Yanfei Zhang,Qingxuan Liu,Hongxin Xie,Wei Zhang,Xiaoying Lin,Huifeng Zhang,Huan Yu,Yinghui Ma,Chuang Zhang,Hao Geng,Nianqiu Shi,Liwei Cui,Bai Li,Yu-Feng Li
Methylmercury (MeHg) can cause devastating neurotoxicity in animals and human beings . Gut microbiota dysbiosis has been found in MeHg-poisoned animals. Fecal microbiota transplantation (FMT) has been shown to improve clinical outcomes in a variety of diseases such as epilepsy, amyotrophic lateral sclerosis (ALS) and autism. The aim of this study was to investigate the effects of FMT on MeHg-poisoned rats. FMT treatment was applied to MeHg-poisoned rats for 14 days. The neurobehavior, weight changes , dopamine (DA), the total Hg and MeHg level were evaluated. Besides, the gut microbiota and metabolites change in feces were also checked. It was found that FMT helped weight gain, alleviated the neurological disorders , enhanced fecal mercury excretion and MeHg demethylation , reconstructed gut microbiome and promoted the production of gut-brain axis related-metabolites in MeHg-poisoned rats. This study elaborates on the therapeutic efficacy of FMT in treating of MeHg-poisoned rats, which sheds lights on the treatment of neurological diseases like Minamata Disease and even Parkinson's Disease .
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高影响因子
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