DALTON TRANSACTIONS
·
2025
·
IF 3.3
Caihong Fang,Ruihao Li,Yiting Zheng,Longhui Nie
The dual environmental challenges of solid waste magnetic steel slag (MSS) utilization and antibiotic pollution treatment require novel environmental remediation strategies. Herein, a novel MSS@MoS2 composite catalyst was prepared for the first time by an alkali pretreatment of MSS followed by one-step high-speed ball milling functionalization with MoS2. The optimized MSS@MoS2-50 catalyst showed outstanding peroxomonosulfate (PMS) activation capability, enabling efficient tetracycline hydrochloride (TCH) degradation across a broad pH range (2-11). Mechanistic investigations revealed the generation of multiple reactive species (1O2, O2-, OH, and SO4･-) through synergistic Fe2+/Fe3+ redox cycling and multi-valent Mo-mediated electron transfer. The catalytic activity of MSS@MoS2-50 showed only a 12% decrease after five cycles but almost recovered to the fresh level via a simple regeneration, showing good stability and renewability. The leaching of iron ions (<0.2 mg/L) after the reaction was below the standard for surface water. Also, it has good magnetic separability, showing good application potential. The three possible degradation pathways were posed by combining with the results of LC-MS and active species analysis. The toxicity of TCH can be effectively reduced after degradation by the T.E.S.T. toxicity analysis.
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高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2022
·
IF 6.371
Fuling Li,Changgeng Li,Quan Xie,Xuelong Chen,Xiu-Zhi Tang,Tong Guo
Elegant material construction to realize high-efficiency microwave absorption with low filler loading is in strong demand yet remains challenging. Here we combine a self-assembly method followed by pyrolysis to fabricate core-shell Co 9 S 8 @MoS 2 nanocubes, which were uniformly anchored on reduced graphene oxide nanosheets (A-G/Co 9 S 8 @MoS 2 ) to form hierarchical heterostructures . The heterostructure was deliberately designated via chemical etching of in situ formed Co 9 S 8 derived from ZIF-67 and decoration of flower-like MoS 2 nanosheets. Owing to its synergic effect in compositions and well-designed heterostructure, the product A-G/Co 9 S 8 @MoS 2 exhibits excellent microwave absorption performance with low loading content. A minimum reflection loss of − 55.13 dB and effective absorption bandwidth of 6.61 GHz with filler loading of only 8 wt% was achieved, contributed by the good impedance matching and dual loss mechanism. This work provides a new pathway for designing low-filler loading high-performance microwave absorption materials.
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高影响因子
Nanoscale
·
2022
·Vol. 14
·期 6
·2490-2501
·
IF 8.307
Liang Yuan,Yingmeng Zhang,Jinhong Chen,Yongliang Li,Xiangzhong Ren,Peixin Zhang,Liwei Liu,Jinxiang Zhang,Lingna Sun
Although the design and synthesis of efficient electrocatalysts for the hydrogen evolution reaction (HER) are highly desirable, severe challenges still need to be addressed. Herein, ultrathin MoS2 nanosheets were vertically grown on CoSe2 hollow nanotube arrays via a simple three-step hydrothermal reaction by using carbon cloth (CC) as a substrate and were subsequently used as a highly efficient HER electrocatalyst (MoS2@CoSe2-CC hybrid). The MoS2 nanosheets uniformly self-assembled on conductive CoSe2 nanotube arrays exhibited a hierarchical and well-ordered structure. Such a unique structure may not only comprise more exposed active sites, but also enable fast electrolyte penetration and facilitate H+/electron transportation to accelerate the reduction and evolution of H2 during the electrocatalytic process. As an HER electrocatalyst with a novel three-dimensional hierarchical structure, the MoS2@CoSe2-CC hybrid exhibited an outstanding catalytic HER performance with a small Tafel slope of 67 mV dec−1 in alkaline media, while only requiring a low HER overpotential of 101 mV at 10 mA cm−2. Notably, the MoS2@CoSe2-CC hybrid also demonstrated exceptional electrochemical durability and structural stability even after 1000 cycles or 48 h of continuous electrolysis. Overall, this work presents a new approach for the design and synthesis of robust, highly active, and cost-effective electrocatalysts for hydrogen generation.
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高影响因子
Journal of Materials Chemistry C
·
2020
·Vol. 9
·期 5
·1701-1708
·
IF 7.059
Jiaojiao Song,Yican Chu,Zhizhen Liu,Haihua Xu
Few-layer molybdenum disulfide (MoS2), which has weak interlayer van der Waals bonds and strong intralayer covalent bonds, is of huge interest in optoelectronic applications due to its scalable production, tunable bandgap and mechanical flexibility. Here, we present high-performance ambipolar electrolyte-gated field effect transistors (amEGFETs) based on a solution-processed MoS2–polymer hybrid. They exhibit hole and electron mobilities of 0.21 cm2 V−1 s−1 and 0.04 cm2 V−1 s−1, respectively, together with a high current on/off ratio of >106 for both p-type and n-type operations. The pronounced ambipolar characteristics are essentially determined by the large interpenetrating network formed at the semiconductor/electrolyte interface. Using such a device, we demonstrate for the first time low-power operations of complementary metal-oxide semiconductor (CMOS)-compatible and cost-efficient electrical inverter and optical modulator. Our results broaden the future optoelectronic applications of two-dimensional semiconductors.
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高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2020
·
IF 4.65
Hu Sun,Jialu Xu,Jingdong Huang,Guanghui Li,Jun Luo,Mingjun Rao,Zhiwei Peng,Tao Jiang
A hetero-structured few-layer MoS 2 -coated MoO 2 (MoS 2 @MoO 2 ) has been fabricated and applied as an anode material for LIBs . The MoS 2 @MoO 2 was synthesized via two-step fire process: reducing MoO 3 vapor with H 2 for producing Mo powder, and oxidizing-sulfurizing Mo powder with SO 2 . With the aid of thermodynamic computations, it is found that Mo oxidation under SO 2 atmosphere produces limited amounts of S 2 vapor, which will locally sulfurize the particles nearby, resulting in finite and even sulfurization. The as-prepared MoS 2 @MoO 2 includes few-layer MoS 2 (about 3 nm thick) covering the surface, which serves a well-spreading and active material that synergizes with inner MoO 2 to boost the performance for LIBs. Thus, the MoS 2 @MoO 2 could deliver a high reversible specific capacity of 1263 mA h g −1 after 40 cycles at 0.1 A g −1 , and maintain a specific capacity of 1052 mA h g −1 after 150 cycles at 0.2 A g −1 . Even at 0.5 A g −1 , the specific capacity could still keep above 650 mA h g −1 for over 500 cycles. The new method for MoS 2 @MoO 2 synthesis is facile and effective, and may be extended to produce hybrids composed of other transition metal oxides and sulfides.
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ACS Applied Materials & Interfaces
·
2020
·
IF 8.758
Miaomiao Xiang,Huihui Liu,Chenxi Huang,Yue Li,Hualing Zeng,Xiang Shao
Molybdenum disulfide (MoS2) has attracted considerable interest due to its superior electronic and optical properties, which have seen promising applications in optoelectronics and catalysis. Chemical vapor deposition (CVD) has been successfully applied in synthesizing MoS2 on various substrates. However, it remains a great challenge to fabricate high-quality MoS2 sheets with well-controlled micro/nano size and homogeneous distribution over the functional substrates such as active metal oxides. Herein, we have developed a two-step synthetic strategy via depositing MoO3 first followed by subsequent vulcanization, to grow single-layer MoS2 on an atomically flat rutile TiO2(110) (r-TiO2(110)) substrate. This method not only very well controls the size as well as the spatial distribution of MoS2 nanosheets over the TiO2 surface but also averts the formation of contaminative species at the heterojunction while maintaining the atomic structure of the substrate surface. The extensive characterizations reveal that the formation of MoS2 derives from the sulfurization of the singly dispersed Mo6+ and Mo5+ species in the surface/subsurface region instead of the aggregated MoO3 patches on top of the TiO2 surface. Such a mechanism may dictate a general way for synthesizing high-quality transition-metal dichalcogenides (TMDs) over a variety of functional substrates.
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高影响因子
2D Materials
·
2019
·Vol. 6
·期 4
·045007
·
IF 7.343
Yunyun Huang,Aoxiang Xiao,Guanhua Hou,Hongtao Li,Pengwei Chen,Chaoyan Chen,Bai-Ou Guan
Exploring the photothermal-induced deformation dynamic and mechanism of nanohybrids is of fundamental importance for smart material design and processing at the nanoscale. Here, an optical microfiber interferometer is employed to explore the impact of MoS2 supporting interface on the photothermal-induced deformation of gold nanoshells. Upon analyzing the optical spectra recorded by the microfiber and transmission electron microscopy images, it appears that the MoS2 supporting interface enhances the photothermal effect of the gold nanostructures and confines the electric field oscillation to the nanoshells. Thus, the shape and size evolution of the gold nanoshells are greatly affected by the presence of MoS2 supporting interface. The facile photothermal-induced transformation of the gold nanoshell-MoS2 nanohybrids indicates their technological applications, including catalysis and electronic/optical devices. Furthermore, this transformation process was monitored by an optical microfiber through its evanescent field. This demonstrates the feasibility of using optical fibers to study the inner mechanisms of material transitions in situ, providing a fundamental basis for smart material development at the nanoscale.
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DESALINATION
·
2020
·
IF 7.098
Jing Ma,Xiaodong Tang,Yi He,Yi Fan,Jingyu Chen,HaoYu
Robust stable filtration membranes based on graphene oxide (GO), with fast and efficient capacity to separate dyes or salts from water, are highly necessary to maintain fresh water resources, but still a challenge to achieve. Herein, an easy and effective route has been demonstrated to address this challenge by intercalating GO with molybdenum disulfide (MoS 2 ) nanosheets . Prompted by the strong van der Waals interactions between GO and MoS 2 and the weak interaction between MoS 2 and H 2 O molecules, the interlayer stabilizing force within the MoS 2 /GO filtration membrane has been greatly enhanced. Therefore, robust stability against harsh conditions (pH values from 3 to 11) without any additional cross-linkers can be realized. Additionally, compared with pure GO membrane, our MoS 2 /GO membrane exhibits both enhanced pure water flux (from 8.83 L·m − 2 ·h − 1 to 48.27 L·m − 2 ·h − 1 ) and improved salts removal capacity (i.e., K 3 Fe(CN) 6 (from 54.32% to 96.85%)), without deteriorating its dyes rejection ratio (i.e., methylene blue (more than 99.50%)). Meanwhile, the membrane also has outstanding cycling stability. For the ubiquitous van der Waals forces between two-dimensional materials, our method can be easily extended to construct other stable and highly efficient filtration membranes.
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CHEMICAL ENGINEERING JOURNAL
·
2022
·
IF 16.744
Haixin Zhao,Jia Huang,Lu Miao,Yuqi Yang,Zuoxiu Xiao,Qiaohui Chen,Qiong Huang,Kelong Ai
The high incidence of kidney disease caused by various factors (such as COVID-19) has triggered an extreme desire for wearable artificial kidney (WAK). Nevertheless, the dialysate regeneration system in WAK presents a very low adsorption capacity of urea, and must rely on the help of urease and zirconium compounds, which make the device too complex and costly, thus limiting their application. In this study, we employ the adsorption activity of defect-rich MoS 2 nanosheets with widened interlayer spacing (WDR-MoS 2 ) for the elimination of three crucial uremic toxins (urea, creatinine, and uric acid). The high adsorption performances of WDR-MoS 2 are owing to the presence of abundant S atoms between the two MoS 2 sheets that can efficiently adsorb uremic toxins through the unique S–N bond. Furthermore, widening the layer spacing of MoS 2 is similar to adjusting the aperture of a filter, which can not only speed up the transport of uremic toxins but also prevent the passage of large molecules (such as proteins). Thus, the WDR-MoS 2 can neither affect cell viability nor produce hemolysis and coagulation in the blood. Finally, a home-made WDR-MoS 2 fixed-bed system without urease and zirconium compounds is used to efficiently remove uremic toxins in the dialysate. WDR-MoS 2 is expected to fundamentally solve the materials science challenges in WAK and provide a new design idea for the development of high-performance 2D material-based adsorbents.
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Applied Materials Today
·
2025
·
IF 6.9
Longfang Ren,Fangfang Dong,Xiaodong Gao,Sijie Yu,Taotao Qiang
The flexible ammonia sensor can detect the ammonia content in the air or the exhaled gas of humans, but the commonly used sensors have poor breathability and washability, so they are not suitable for direct contact with human skin. In this work, based on the excellent flexibility and permeability of nonwovens, UiO-66-NH 2 /MoS 2 @nonwoven (UMN) and UiO-66-NH 2 /MoS 2 /Ag@nonwoven (UMAN) gas sensors were prepared by loading self-prepared UiO-66-NH 2 /MoS 2 (UM) and UiO-66-NH 2 /MoS 2 /Ag (UMA) onto microfiber nonwovens. The results show that UMN and UMAN gas sensors exhibit high selectivity toward ammonia gas. The response values of UMN and UMAN demonstrate a consistent linear trend within the ammonia concentration range of 1–50 ppm and reach 43 % and 47 % at 1 ppm respectively. The response variations of the sensors before and after bending are below 4 %, demonstrating excellent bending stability. After washing for 24 h, the gas sensing performance shows nearly no change, indicating that they both have good reusability and washability. However, the sensors exhibit limited thermal and humidity stability. Given the challenges such as poor breathability and insufficient biocompatibility faced by traditional flexible gas sensors, UMN and UMAN sensors have emerged as highly promising alternatives with distinct advantages.
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Materials Horizons
·
2025
·
IF 10.7
Yihao Duan,Haihua Wang,Guiqiang Fei,Yu Wang,Liyu Sun
Modification of graphitic carbon nitride (g-C3N4) with semiconductor nanomaterials has been widely investigated as an effective method to enhance its photocatalytic activity. However, the construction of efficient g-C3N4-based heterojunction photocatalysts via an environmentally benign method remains critical. Herein, a two-dimensional (2D) few-layered MoS2/S-doped g-C3N4 hierarchical heterojunction was successfully synthesized by a simple strategy via combining small molecule-assisted liquid exfoliation, calcination and hydrothermal strategy, which was subsequently utilized for photocatalytic formaldehyde removal. The evaluation of the photocatalytic degradation reaction showed that the as-prepared 2D/2D MoS2/S-doped g-C3N4 photocatalysts exhibited superior photocatalytic activity compared to pristine g-C3N4 and S-doped g-C3N4 alone, which was attributed to the intimate interface and rapid charge transfer pathways. This heterojunction structure suppresses the excited electron–hole pair recombination within g-C3N4, which optimally enhances the photodegradation activity owing to high electron–hole pair separation efficiency. The few-layer MoS2 nanosheets play an irreplaceable role due to their unique molybdenum–sulfur atomic arrangement, thereby displaying the superior electronic properties of few-layer or even monolayer nanosheets, which make them an important transfer medium for photoexcited electrons. Meanwhile, S doping effectively modulates the band gap of g-C3N4 and introduces sufficient structural defects to inhibit electron–hole recombination. Moreover, the synthesis employs efficient and non-hazardous reagents, and the resulting catalysts exhibit outstanding stability and recyclability for pollutant degradation.
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BIOELECTROCHEMISTRY
·
2025
·
IF 4.5
Zhide Zhou,Haimei Li,Xiaohua Deng,Yuxuan Shi,Jiahang Huang,Yu Zhou,Xiaohong Tan,Jintao Liang,Guiyin Li
Cardiovascular disease (CVD) is the leading cause of death worldwide, particularly in the developing countries. Low-density lipoprotein (LDL), a critical biomarker for the early detection and intervention of CVD, provides valuable diagnostic and prognostic information for CVD. Herein, we developed a dual-signal electrochemical aptasensor for LDL detection based on a peroxidase-like nanozyme composed of reduced graphene oxide@molybdenum disulfide-ferrocenecarboxylic acid (rGO@MoS 2 -Fc). In the process of electrochemical testing, rGO@MoS 2 -Fc achieved the synergistic amplification of electrochemical signals both an enhanced Fc oxidation current detected by differential pulse voltammetry (DPV), and an increased hydrogen peroxide (H 2 O 2 ) decomposition current via amperometric current-time (i-t) analysis. The DPV signal, corresponding to Fc oxidation, exhibited a logarithmic linear response over a broad LDL concentration ranged from 0.001 to 100.0 μg/mL, with a limit of detection (LOD) as low as 0.91 ng/mL. Meanwhile, the i-t signal, arising from H 2 O 2 decomposition, displayed a linear range of 1.0 to 80.0 μg/mL and an LOD of 0.80 μg/mL. This dual-signal strategy exhibited good selectivity, reproducibility, stability and self-calibration capability. Analysis of human serum samples showed that the proposed strategy is expected to be a powerful method for early-stage CVD diagnosis and clinical management.
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