COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2023
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IF 5.2
Yanhua Lei,Mengchao Ding,Sha Cheng,Da Huo,Fei Zhang,Tao Liu,Yuliang Zhang
The transition metal sulfide MoS 2 has attracted great interest from the scientific community as an excellent co-catalyst for promoting Fe 2+ /Fe 3+ cycling in advanced oxidation processes to enhance the efficiency of H 2 O 2 decomposition. A photothermal-enhanced photo-Fenton pollutant degradation strategy was proposed. Hybrids of magnetically recyclable Fe 3 O 4 fabricated 1 T-2 H MoS 2 (1 T-2 H MoS 2 @Fe 3 O 4 ) with excellent photothermal conversion efficiency were fabricated to overcome the limitations of relatively low catalytic activity and cycling stability in Fenton reaction. XRD , Raman, TEM and hysteresis loop were employed to evaluate the heterogeneous phase 1 T-2 H MoS 2 nanoflowers as well as the magnetic property . The 1 T-2 H MoS 2 @Fe 3 O 4 hybrids with excellent photothermal conversion efficiency not only enhance the reaction temperature of the Fenton reaction occurring on the material surface, but also demonstrate an effective interfacial photothermal water evaporation efficiency. Due to the synergistic effect of photocatalysis and photo-Fenton catalytic reaction , a quick degradation of simulated pollution were achieved in 5 mins with 98.3% degradation, which could be further improved to 99% due to the photothermal promoting reaction. The 1 T-2 H MoS 2 @Fe 3 O 4 hybrids exhibit good magnetic recyclability, cyclic stability and photothermal performance, which endow it a wide potential application in the field of environmental remediation and the field of water evaporation at the photothermal interface, etc.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
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2023
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IF 15.1
Wenpeng Wu,Xinqun Zhang,Yukun Xiao,Zhihua Cheng,Tian Yang,Jinsheng Lv,Man Yuan,Jiajia Liu,Yang Zhao
The direct electrolysis of abundant near-neutral seawater resources for hydrogen production faces significant challenges due to insufficient catalyst activity and salt toxicity. Herein, we demonstrate a novel dendritic urchin-like MoC/MoS 2 heterojunction in-situ formed on carbon cloth (CC@MoC/MoS 2 -H) through a combination of hydrothermal and high-temperature annealing processes. This unique dendritic urchin-like structure consists of numerous nanorods on carbon cloth, which enhances the catalytic active sites and provides space for efficient bubble release. The resulting CC@MoC/MoS 2 -H exhibits superior catalytic performance, with an overpotential of 91 mV and 136 mV at the current density of 10 mA cm −2 in the 1 M PBS electrolyte and natural seawater, respectively, surpassesing that of most non-noble metal compounds reported previously. Finite element simulations reveal that the urchin-like structure has significantly higher bubble release capacity compared to the randomly stacked structure. Additionally, the urchin-like structure demonstrates substantially greater current density retention under electrolytic conditions designed to simulate salt accumulation, in comparison to the small-size structure. Furthermore, the average H 2 production efficiency of 78,493 μmol h −1 g −1 was evaluated for three consecutive hours using commercial solar panels rated at 2 V on a large-scale electrode assembly from seawater, which is comparable to the present photocatalytic hydrogen production efficiency. This work opens new avenues for the development of catalytic structures compatible with seawater.
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高影响因子
Energy & Environmental Materials
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2023
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IF 15
Fan Liu,Xinghong Cai,Yang Tang,Wenqian Liu,Qianwei Chen,Peixin Dong,Maowen Xu,Yangyang Tan,Shujuan Bao
Electrocatalytic hydrogen evolution and sulfion (S 2− ) recycling are promising strategies for boosting H 2 production and removing environmental pollutants. Here, a nano-Ni-functionalized molybdenum disulfide (MoS 2 ) nanosheet was assembled on steel mesh (Ni-MoS 2 /SM) for use in sulfide oxidation reaction-assisted, energy-saving H 2 production. Experimental and theoretical calculation results revealed that anchoring nano-Ni on high-surface-area slack MoS 2 nanosheets not only optimized catalyst adsorption of polysulfides but also played an important role in promoting hydrogen evolution reaction kinetics by absorbing OH ad , thereby greatly enhancing the catalytic performance toward sulfide oxidation reaction and hydrogen evolution reaction. Meanwhile, the Ni/MoS 2 -based hydrogen evolution reaction + sulfide oxidation reaction system achieved nearly 100% hydrogen production efficiency and only consumed 61% less power per kWh than the oxygen evolution reaction + hydrogen evolution reaction system, which suggested our proposed Ni-MoS 2 and novel hydrogen production system are promising for sustainable energy production.
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高影响因子
Journal of Energy Chemistry
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2023
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IF 13.1
Panpan Liu,Yang Li,Zhaodi Tang,Junjun Lv,Piao Cheng,Xuemei Diao,Yu Jiang,Xiao Chen,Ge Wang
Developing advanced nanocomposite integrating solar-driven thermal energy storage and thermal management functional microwave absorption can facilitate the cutting-edge application of phase change materials (PCMs). To conquer this goal, herein, two-dimensional MoS 2 nanosheets are grown in situ on the surface of one-dimensional CNTs to prepare core-sheath MoS 2 @CNTs for the encapsulation of paraffin wax (PW). Benefiting from the synergistic enhancement photothermal effect of MoS 2 and CNTs, MoS 2 @CNTs is capable of efficiently trapping photons and quickly transporting phonons, thus yielding a high solar-thermal energy conversion and storage efficiency of 94.97%. Meanwhile, PW/MoS 2 @CNTs composite PCMs exhibit a high phase change enthalpy of 101.60 J/g and excellent long-term thermal storage durability after undergoing multiple heating–cooling cycles. More attractively, PW/MoS 2 @CNTs composite PCMs realize thermal management functional microwave absorption in heat-related electronic application scenarios, which is superior to the single microwave absorption of traditional materials. The minimum reflection loss (RL) for PW/MoS 2 @CNTs is −28 dB at 12.91 GHz with a 2.0 mm thickness. This functional integration design provides some insightful references on developing advanced microwave absorbing composite PCMs, holding great potential towards high-efficiency solar energy utilization and thermally managed microwave absorption fields.
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高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2023
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IF 8.6
Yusi Tian,Xuyang Zhang,Minghua Zhou,Ying Zhang
A bifunctional cathode with MoS 2 powder and carbon black deposited on carbon felt (MCB@CF) was prepared and first applied as bifunctional cathode to heterogeneous electro-Fenton (EF). This cathode presented higher H 2 O 2 production compared with other cathodes. Fe 0 modified by sulfidation coupled with pre-magnetization (pre-S/Fe 0 ) was used as a catalyst in the EF process. Compared to the conventional EF process, the established pre-S/Fe 0 -EF-MCB@CF process showed higher sulfamethazine (SMT) removal (removal rate constant improved by 3.01 times) and TOC removal (40% in 1 h) within wide pH range (pH 4–10). According to the radical quenching experiment, •OH was proved to be the main oxidation species for SMT degradation and O 2 •- played a marginal role. MoS 2 surface presented Mo 4+ active sites that could promote the conversion of Fe 3+ to Fe 2+ , during which Mo 4+ was oxidized to Mo 6+ . The promoted reduction of Fe 3+ to Fe 2+ enhanced the utilization of H 2 O 2 and thus the generation of ∙OH. The six consecutive runs of pre-S/Fe 0 -EF-MCB@CF process proved the excellent stability and reusability of prepared MCB@CF cathode. Compared with that by Fe 0 -EF-CB@CF process, the removal rates of pesticides, phenols, dyes and drugs by pre-S/Fe 0 -EF-MCB@CF process was enhanced more than two times, demonstrating the potential of this process for wide application. This study provides a green and sustainable approach for the treatment of refractory pollutants by heterogeneous EF process in a wide pH range.
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高影响因子
Materials Today Physics
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2023
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IF 11.5
Lin Long,Xiaosi Qi,Lei Wang,Shaohong Cai,Mingsen Deng
Magnetic-dielectric nanocomposites with excellent synergetic effect were deemed as the ideal candidates for high-performance microwave absorbers (MAs). Herein, we adopted a simple hydrothermal route and hydrogenous reduction to synthesize magnetic-dielectric CoFe@MoO 2 /MoS 2 flower-like multicomponent nanocomposites (MCNCs). By controlling the different reduction temperature and time, the content of component (i.e., CoFe, MoO 2 and MoS 2 ) can be easily tuned, which is conducive to adjust electromagnetic parameter and optimize magnetic loss. Results demonstrated that the CoFe@MoO 2 /MoS 2 flower-like MCNCs could be easily regulated by simply changing the content of CoFe in favor of improved magnetic loss and optimized impedance matching. So, the prepared magnetic-dielectric CoFe@MoO 2 /MoS 2 flower-like MCNCs presented the minimum reflection loss of −55.91 dB and the widest effective bandwidth of 7.24 GHz. The strategies for adjusting rich interfaces and optimized magnetic loss are very instructive for the development of high-performance MAs and devices.
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Advanced Science
·
2023
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IF 15.1
Jia Huang,Guiming Deng,Shuya Wang,Tianjiao Zhao,Qiaohui Chen,Yuqi Yang,Yongqi Yang,Jinping Zhang,Yayun Nan,Zhaoqian Liu,Ke Cao,Qiong Huang,Kelong Ai
The fast conversion of hydrogen peroxide (H 2 O 2 ) into reactive oxygen species (ROS) at tumor sites is a promising anticancer strategy by manipulating nanomedicines with near-infrared light in the second region (NIR-II). However, this strategy is greatly compromised by the powerful antioxidant capacity of tumors and the limited ROS generation rate of nanomedicines. This dilemma mainly stems from the lack of an effective synthesis method to support high-density copper-based nanocatalysts on the surface of photothermal nanomaterials. Herein, a multifunctional nanoplatform (MCPQZ) with high–density cuprous (Cu 2 O) supported molybdenum disulfide (MoS 2 ) nanoflowers (MC NFs) is developed for the efficient killing of tumors via a potent ROS storm by an innovative method. Under NIR-II light irradiation, the ROS intensity and maximum reaction velocity ( V max ) produced by MC NFs are 21.6 and 33.8 times that of the non–irradiation group in vitro, which is much higher than most current nanomedicines. Moreover, the strong ROS storm in cancer cells is efficiently formed by MCPQZ (increased by 27.8 times compared to the control), thanks to the fact that MCPQZ effectively pre–weakens the multiple antioxidant systems of cancer cells. This work provides a novel insight to solve the bottleneck of ROS-based cancer therapy.
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PubMed
高影响因子
CARBON
·
2023
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IF 10.9
Yongjun Zhou,Yuanya Zhang,Jing Wang,Yu He,Junya Yuan,Xuehu Men
Epoxy resin (EP) composites are attracting intensive interest for aviation aircraft applications due to superior machinability and high corrosion resistance . However, the poor tribological performance of EP matrix greatly limits its wide application because of highly brittle and weak thermal properties. Herein, we constructed a vine-like MXene@MoS 2 /Carbon nanofiber aerogel (MMoCA) via directed freezing method and cellulose carbonization treatment. The obtained MMoCA exhibited long-range-aligned 3D porous lamellar structure and the MXene@MoS 2 attached to carbon nanofiber surface presented good dispersion inside the aerogel. Such a novel aerogel bestowed the EP composites with outstanding thermal properties through constructing continuous oriented thermal diffusion channels inside the EP matrix. Meanwhile MMoCA reinforced EP composites (MMoCA-EP) showed great potential in tribological application, resulting from the rapid friction heat dissipation and high-quality transfer films during the friction process . This study has a significant guidance to develop high performance polymer composites in the frontier field of tribology .
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高影响因子
ACS Omega
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2023
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IF 4.1
Miaogen Chen,Wenya Chang,Jing Zhang,Wan Zhao,Zhi Chen
Water pollution caused by antibiotics is a growing problem. Semiconductor photocatalysis is an environmentally friendly technology that can effectively degrade organic pollutants in water. Therefore, the development of efficient photocatalysts is of great significance to solve the environmental pollution problem. In this paper, mixed-phase TiO2 and 1T/2H-MoS2 composite (1T/2H-MoS2/TiO2) were synthesized by the in situ growth method. The prepared compounds were characterized and applied to the visible-light degradation of tetracycline hydrochloride. The photocatalytic effect of 1T/2H-MoS2/TiO2 on tetracycline hydrochloride is significantly enhanced under visible light and has good stability. It has potential applications in the treatment of organic pollutants in water.
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PubMed
高影响因子
Advanced Science
·
2023
·Vol. 10
·期 15
·2206494
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IF 15.1
Shaowei Xie,Xiaochen Fei,Jiayi Wang,Yi-Cheng Zhu,Jiazhou Liu,Xinxing Du,Xuesong Liu,Liang Dong,Yinjie Zhu,Jiahua Pan,Baijun Dong,Jianjun Sha,Yu Luo,Wenshe Sun,Wei Xue
High-throughput metabolic fingerprinting has been deemed one of the most promising strategies for addressing the high false positive rate of prostate cancer (PCa) diagnosis in the prostate-specific antigen (PSA) gray zone. However, the current metabolic fingerprinting remains challenging in achieving high-precision metabolite detection in complex biological samples (e.g., serum and urine). Herein, a novel self-assembly MoS 2 /MXene heterostructure nanocomposite with a tailored doping ratio of 10% is presented as a matrix for laser desorption ionization mass spectrometry analysis in clinical biosamples. Notably, owing to the two-dimensional architecture and doping effect, MoS 2 /MXene demonstrates favorable laser desorption ionization performance with low adsorption energy, which is evidenced by efficient urinary metabolic fingerprinting with an enhanced area under curve (AUC) diagnosis capability of 0.959 relative to that of serum metabolic fingerprinting (AUC = 0.902) for the diagnosis of PCa in the PSA gray zone. Thus, this MoS 2 /MXene heterostructure is anticipated to offer a novel strategy to precisely and noninvasively diagnose PCa in the PSA gray zone.
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PubMed
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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2023
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IF 7.2
Yuan-Yuan Feng,Gao Deng,Xiang-Yu Wang,Meng Zhu,Qing-Nan Bian,Ben-Shuai Guo
Searching for efficient, stable and low-cost nonprecious catalysts for oxygen and hydrogen evolution reactions (OER and HER) is highly desired in overall water splitting (OWS). Herein, presented is a nickel foam (NF)-supported MoS 2 /NiFeS 2 heterostructure , as an efficient electrocatalyst for OER, HER and OWS. The MoS 2 /NiFeS 2 /NF catalyst achieves a 500 mA cm −2 current density at a small overpotential of 303 mV for OER, and 228 mV for HER. Assembled as an electrolyzer for OWS, such a MoS 2 /NiFeS 2 /NF heterostructure catalyst shows a quite low cell voltage (≈1.79 V) at 500 mA cm −2 , which is among the best values of current non-noble metal electrocatalysts. Even at the extremely large current density of 1000 mA cm −2 , the MoS 2 /NiFeS 2 /NF catalyst presents low overpotentials of 314 and 253 mV for OER and HER, respectively. Furthermore, MoS 2 /NiFeS 2 /NF shows a ceaseless durability over 25 h with almost no change in the cell voltage. The superior catalytic activity and stability at large current densities (>500 mA cm −2 ) far exceed the benchmark RuO 2 and Pt/C catalysts. This work sheds a new light on the development of highly active and stable nonprecious electrocatalysts for industrial water electrolysis .
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Advanced Composites and Hybrid Materials
·
2019
·Vol. 2
·期 1
·151-161
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IF 0
Tian Yunrui,Yang Xing,Nautiyal Amit,Zheng Yayun,Guo Qingping,Luo Jujie,Zhang Xinyu
We introduce a facile one-step microwave solid-state approach to prepare novel MoS 2 /MoO 3 @graphite nanocomposite that can be utilized as an electrode material for supercapacitors. The electrochemical properties of nanocomposite are evaluated by cyclic voltammetry, galvanostatic charge/discharge, and electrochemical impedance spectroscopy tests. The nanocomposite exhibits the highest specific capacitance of 268 F g −1 for 3500 cycles at a current density of 1 A g −1 . The nanocomposite shows excellent cyclic stability of 283% (258 F g −1 ) for over 6000 cycles in 6 M KOH electrolyte. In addition, the microwave method, which is prospected to realize industrial application, can be applied to partial sulfurization.
Schematic diagram of microwave initiated MoS 2 /MoO 3 nanocomposite growth on graphite, and the highly stable MoS 2 /MoO 3 @graphite nanocomposite was synthesized using this one-step microwave approach.
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