JOURNAL OF ALLOYS AND COMPOUNDS
·
2022
·
IF 6.371
Duqiang Xin,Shaodan He,Xiaona Han,Xudong Zhang,Zhaofang Cheng,Minggang Xia
The widespread use of wearable devices has triggered a huge demand for flexible power source. Flexible lithium-ion batteries (LIBs) are widely regarded as an ideal power source for wearable devices because of their high energy density and long cycle life, but their application is limited by traditional rigid electrodes. A promising strategy is to prepare flexible electrodes by synthesising active materials with high capacity on flexible carbon substrates. In this study, Co-doped 1T‐MoS 2 nanosheets were successfully anchored on a pretreatment carbon cloth (CC) by using a facile one-step solvothermal method, which is denoted as Co-MoS 2 /CC. Benefiting from the high conductivity and large layer spacing of the metallic 1T‐MoS 2 , self-supporting CC framework, doping of cobalt and their synergistic effect, when used as a self-supporting anode for LIBs, Co-MoS 2 /CC delivers a high reversible capacity of 1392 mAh g −1 at 0.1 A g −1 and retains 611 mAh g −1 at 2 A g −1 over 300 cycles. Furthermore, it delivers a remarkable rate performance of 230 mAh g −1 at 10 A g −1 . The facile and scalable synthesis method can also be applied to other similar flexible free-standing electrodes for the application of electrochemical energy storage.
研究领域:
材料科学
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能源存储
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DOI
高影响因子
Nature Communications
·
2025
·Vol. 16
·期 1
·1-15
·
IF 15.7
Chen Zhenyin,Chen Wei,Xu Cun,Song Haozhi,Ji Xin,Jiang Haodong,Duan Hongtao,Li Zehao,Gao Wankai,Yao Tuoxin,Zhang Zhongxuan,He Liuqin,Yin Yulong,Yang Nanyang,Tian Wenjing,Wu Jiahui,Li Xing
Fluorogenic RNA aptamers have various applications, including use as fluorescent tags for imaging RNA trafficking and as indicators of RNA-based sensors that exhibit fluorescence upon binding small-molecule fluorophores in living cells. Current fluorogenic RNA:fluorophore complexes typically emit visible fluorescence. However, it is challenging to develop fluorogenic RNA with near-infrared (NIR) fluorescence for in vivo imaging and sensing studies. To address this issue, we identify and modulate red fluorescent protein-like fluorophores to bind Squash, a highly folded fluorogenic RNA. One of these fluorophores, DFQL-1T, exhibits photostable NIR fluorescence when bound to Squash, enabling RNA visualization in living mammalian cells and mice. With Squash:DFQL-1T complexes, we generate RNA-based sensors for detecting non-coding RNAs and small molecule targets in living mammalian cells and in mice. These studies reveal a fluorogenic RNA:fluorophore complex that can be readily developed into NIR fluorescent RNA tags for in vivo imaging and sensing.
研究领域:
分子生物学
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生物医学工程
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成像科学
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DOI
PubMed
高影响因子
INORGANIC CHEMISTRY COMMUNICATIONS
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2025
·
IF 5.4
Xuechang Ren,Suying Ding,Renhua Chen,Ning Fu
This study addresses the limited Fe 3+ /Fe 2+ conversion in homogeneous Fenton-like systems by introducing reducing MoS₂ as a co-catalyst to the Fe 3+ /PMS system, while simultaneously investigating the effect of MoS₂ crystal structure on reaction kinetics. Hydrothermally synthesized 1 T/2H-MoS₂ (denoted as M-x) significantly enhanced phenol degradation in the Fe 3+ /PMS system. Among the catalysts, M-180 demonstrated optimal performance, achieving 91.14 % phenol degradation within 20 min. XPS analysis revealed a positive correlation between 1 T-phase content and degradation efficiency, confirming that 1 T-MoS₂ facilitates Fe 3+ /Fe 2+ redox cycling to promote efficient PMS activation. Radical quenching experiments and electron paramagnetic resonance (EPR) spectroscopy further identified SO₄· − , 1 O₂, and O₂· − as the primary reactive species.
研究领域:
环境化学
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催化
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纳米材料
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水处理
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高级氧化工艺
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DOI
高影响因子
DESALINATION
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2022
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IF 11.211
Jing Jiang,Huiling Jiang,Ying Xu,Lunhong Ai
Solar water evaporation is emerging as one of the most cost-effective and sustainable technologies for efficient seawater desalination . However, salt crystallization during solar desalination severely limits light absorption and reduces evaporation efficiency. Balancing the desirable evaporation rate and the suppressed salt crystallization is critical for long-term solar desalination, but remains a major challenge. In this work, 1T/2H MoS 2 nanoflower embedded in a macroporous PDMS sponge (MoS 2 /PDMS) was fabricated and used as a novel solar evaporator for efficient and durable solar desalination. Thanks to the broadband absorption of MoS 2 and the thermal insulating PDMS sponge, the MoS 2 /PDMS sponge presents a high evaporation rate of 1.47 kg m −2 h −1 and an evaporation efficiency of 81.5 % in pure water under one sun irradiation (1 kW m −2 ). Importantly, the MoS 2 /PDMS sponge with macroporous structure and wet-state hydrophilic wettability achieves efficient and durable solar desalination in simulated seawater (3.5 wt% NaCl solution), effectively suppressing salt crystallization. This finding offers a new way to design robust evaporators with structural flexibility, efficient evaporation and durable desalting for solar desalination.
研究领域:
材料科学
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环境科学
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DOI
高影响因子
Science China-Materials
·
2021
·Vol. 64
·期 9
·2202-2211
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IF 8.273
Wang Yaqian,Shen Yongli,Xiao Xiong,Dai Linxiu,Yao Shuang,An Changhua
Metastable 1T′ MoTe 2 has attracted much attention as a cost-effective electrocatalyst for hydrogen evolution reaction (HER) in recent years. However, few studies were done over common stable 2H phase because it often exhibits inferior performance. Herein, stable 2H MoTe 2 with S-doped Te vacancies has been synthesized by one-step telluride conversion of 1T MoS 2 at 700°C under Ar/H 2 atmosphere. It is demonstrated that the synergistic effect of S-doping and Te vacancies changes the electronic structures of the catalyst. Density functional theory (DFT) studies show that plentiful electrons accumulate on the surface S atoms in S-doped Te vacancies of 2H MoTe 2 catalyst, which may be as active sites to promote HER. Moreover, the as-synthesized catalyst can be directly used as working electrode, and realizes current density of 100 mA cm −2 at overpotential of 217 mV with Tafel slope of 94 mV dec −1 . This work stimulates intensive studies on the activation of inert phase of other nanocatalysts towards various reactions.
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DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2020
·
IF 6.182
Chencheng Gao,Hongfeng Hua,Ming Du,Jinsong Liu,Xiaoyu Wu,Yong Pu,Xing'ao Li
Electronic regulation through component precise control at the atomic level of electrocatalysts has a fundamental influence on the efficiency of hydrogen evolution reaction (HER). Herein, we successfully demonstrate a ZIF-based charge transfer medium for improving the electrocatalytic activity of MoS 2 towards HER. Benefit for the enough porous structure, superior electron conductivity as well as the synergistic effect from the doped atoms, the hybrids phase (1T/2H) MoS 2 nanoflowers decorated amorphous Mo-CoS x skeleton exhibited the promotional electrocatalytic performance in efficiency and stability. Specifically, an extremely low overpotential of 73 mV at the current density of −10 mA cm −2 and an impressive Tafel slope of 39.2 mV dec −1 had been achieved from the nanocomposites in an acidic condition (0.5 M H 2 SO 4 ). The satisfactory activity improvement can be ascribed to the enhancement of electronic transmission rate as well as the synergistic effects between the doped Mo element and CoS x . This work might develop a new avenue to design highly efficient multicomponent electrocatalysts towards HER.
研究领域:
材料科学
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电化学
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DOI
高影响因子
MOLECULES
·
2026
·Vol. 31
·期 16
·2878
·
IF 5.1
Bochen Jiang,Xiaojing Sui,Ziran Niu,Yanhua Lei,Jie Wang,Liu Hui,Bing Zhang,Jiangdong Cao,Yu Gu,Zhongzhou Cui
Solar-driven advanced oxidation processes and interfacial water evaporation represent promising strategies to simultaneously address water pollution and freshwater scarcity. However, conventional photo-Fenton catalysts are predominantly powder-based and suffer from difficult catalyst recovery, inefficient H2O2utilization, and limited practical applicability. Herein, a multifunctional bacterial-cellulose-based composite membrane (BC-MTP) was designed by immobilizing 1T-2H MoS2and a tea-polyphenol/polypyrrole (TP/PPy) copolymer through a blending–copolymerization strategy. The three-dimensional BC network anchors the catalytic components and supports their repeated use, while the BC-MTP membrane achieves 88.2% tetracycline removal using 20 μL H2O2, four times lower than the dosage used for the corresponding powder catalyst. Because dissolved Fe was not quantified by ICP-OES or ICP-MS, the present results are interpreted as evidence of improved H2O2utilization and component immobilization rather than quantitative proof of suppressed iron leaching. The incorporation of 1T-2H MoS2and TP/PPy also provides strong broadband light absorption and photothermal conversion, yielding a solar-driven evaporation rate of 1.34 kg m−2h−1and an energy efficiency of 80.1% under the tested laboratory conditions. This work demonstrates a membrane platform integrating photo-Fenton degradation and solar-driven water evaporation for water-purification applications.
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PubMed
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2024
·
IF 9.4
Chong Chen,Qiuhao Li,Fengqing Wang,Changjiang Hu,Jun Ma
Precise defect engineering of photocatalysts is highly demanding but remains a challenge. Here, we developed a facile and controllable γ-ray radiation strategy to assemble dual-vacancies confined MoS 2 -CdS-γ nanocomposite photocatalyst. We showed the solvated electron induced homogeneous growth of defects-rich CdS nanoparticles, while the symbiotic • OH radicals etched flower-like 1T/2H MoS 2 substrate surfaces. The optimal MoS 2 -CdS-γ exhibited a H 2 evolution rate of up to 37.80 mmol/h/g under visible light irradiation, which was 36.7 times higher than that of bare CdS-γ, and far superior to those synthesized by hydrothermal method. The microscopic characterizations and theoretical calculations revealed the formation of such unprecedented dual-sulfur-vacancies ensured the tight interfacial contact for fast charge separation. Besides, the existence of 1T-MoS 2 phase further improved the conductivity and strengthened the adsorption interaction with H + intermediate. Therefore, the radiolytic radical chemistry offered a facile, ambient and effective synthetic strategy to improve the catalytic performances of photocatalytic materials.
研究领域:
材料科学
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纳米技术
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光催化
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化学工程
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DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2024
·
IF 8.1
Jiabo Wang,Zhentao Liu,Wenxin Wang,Li Chen
The increasing demand for clean and renewable energy underscores the importance of hydrogen energy, with electrocatalytic water splitting being an efficient method for green hydrogen production. Platinum, while an excellent catalyst for hydrogen evolution reactions (HER), is hindered by high cost and scarcity. This study explores non-precious alternatives, focusing on MoS 2 due to its “platinum-like behavior.” The 1T-2H MoS 2 loaded on N-doped carbon (NC) catalysts (1T-2H MoS 2 @NC) were synthesized through a one-step pyrolysis of melamine and ammonium thiomolybdate. Comprehensive analysis revealed that the 2H phase formed at 700 °C, transitioning to a biphasic 1T-2H composition at higher temperatures. The catalyst synthesized at 800 °C with a 1:8 reactant ratio demonstrated exceptional HER performance, with an overpotential of 175 mV at 10 mA cm −2 and a Tafel slope of 92.37 mV dec −1 . This study highlights the potential of 1T-2H MoS 2 @NC as a cost-effective and efficient catalyst for sustainable hydrogen production.
研究领域:
材料科学
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能源化学
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DOI
高影响因子
RSC Advances
·
2016
·Vol. 6
·期 78
·74394-74399
·
IF 3.289
Ping Du,Yuanzhi Zhu,Junyang Zhang,Danyun Xu,Wenchao Peng,Guoliang Zhang,Fengbao Zhang,Xiaobin Fan
Conversion of solar energy to hydrogen requires efficient, low-cost and earth-abundant H-producing photocatalysts. Herein, a novel noble metal-free photocatalyst 1T–MoS2/CdS NRs was prepared via a simple method. The 1T–MoS2/CdS NRs hybrid showed the highest photocatalytic activity when the optimized weight ratio of metallic 1T–MoS2 to CdS NRs is 10 wt% in a lactic acid solution under visible light. A 794.93 μmol h−1 H2 evolution rate of the 1T–MoS2/CdS NRs hybrid reached not only 35 times improvement than pure CdS NRs but also 4.5 times enhancement than the 2H–MoS2/CdS NRs hybrid. The relative mechanism has been investigated. 1T–MoS2/CdS NRs interfaces could form ohmic contact with very low contact resistances to promote photoexcited electron transfer, which was different from the p/n junction on the 2H–MoS2/CdS NRs hybrid.
研究领域:
材料科学
·
能源化学
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DOI
高影响因子
JOURNAL OF POWER SOURCES
·
2023
·
IF 9.2
Shuang Gao,Shaoqing Chen,Feng Shi,Wenwen Jiang,Jiafu Chen
Molybdenum disulfide (MoS 2 ), as a classical layered transition-metal dichalcogenide (TMD), shows great potential as an advanced Zn 2+ storage cathode of aqueous Zn-ion batteries (ZIBs) due to high theoretical capacity and two-dimensional Zn 2+ transport channels. However, the narrow interlayer distance and the poor electrical conduction of stable 2H-MoS 2 limit its applications. In this work, the 1T-MoS 2 sheets with good electrical conduction and large interlayer spacing of 9.5 Å (designated as MoS 2 -180) have been successfully prepared by a facile hydrothermal method . The interlaminar structural water induces stable existence of metastable 1T-MoS 2 and large space distance of 6.08 Å between layers (that is larger than the size (5.5 Å) of hydrated Zn 2+ ), and contributes to its excellent hydrophilicity , promoting transmission of hydrated Zn 2+ . The interlayer spacing-tailored MoS 2 -180 cathode exhibits high specific capacity (Cs) of 226.2 mAh g −1 at 0.10 A g −1 and impressive high-rate capability. The Cs at 5.00 A g −1 is extraordinarily up to 150.9 mAh g −1 and retains 66.7% of that at 0.10 A g −1 . This is far superior to the most reported MoS 2 , MoS 2 derivatives and MoS 2 /C composite cathodes. Moreover, the activated MoS 2 -180 cathode shows robust long-term cycling stability with Cs retention of 103.6% after 500 cycles at 1.00 A g −1 . The mechanism behind these phenomena brings new insights into the structural water-induced 1T-MoS 2 for high-performance aqueous ZIBs cathodes.
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高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2023
·
IF 9.9
Xiaoyan Ding,Yanjun Xue,Jingjing Wang,Jian Tian
Heterojunction engineering is an effective strategy to improve photocatalytic performance. Two-dimensional (2D)/2D semimetal 1T′ phase molybdenum sulfide/zinc indium sulfide (1T′-MoS 2 /ZnIn 2 S 4 ) S-scheme heterojunctions with tight and stable interfaces were synthesized by a simple hydrothermal synthesis method. Under the optimal 1T′-MoS 2 loading ratio (5 wt%), the hydrogen production rate of 1T′-MoS 2 /ZnIn 2 S 4 composites reaches 11.42 mmol h −1 g −1 , which is 3.1 and 1.4 times higher than that of pure ZnIn 2 S 4 (2.9 mmol h −1 g −1 ) and ZnIn 2 S 4 /Pt (8.01 mmol h −1 g −1 ), and the apparent quantum efficiency (AQE) reaches 53.17 % (λ = 370 nm). Semimetal 1T′ phase MoS 2 on ZnIn 2 S 4 broadens the light absorption range, enhances the light absorption ability, promotes electron transfer, and offers abundant active sites. The establishment of S-scheme heterojunctions achieves the spatial separation of photogenerated charges and increases the reduction potential. This work provides insights for the design of novel photocatalysts.
研究领域:
材料科学
·
能源化学
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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）