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.
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DOI
高影响因子
ACS Applied Materials & Interfaces
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2021
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IF 9.229
Yanei Xue,Penghui Shao,Yixing Yuan,Wenxin Shi,Fuyi Cui
The 2H phases of MoS2 (2H-MoS2) monolayers present a wealth of new opportunities in photocatalysis owing to their photoinduced catalyzing ability and excellent charge carrier mobility. However, the complete release of their catalytic activities is restricted by their inert basal planes. Although the inert base planes of 2H-MoS2 are known to be activated by atomic doping, the operational principle of the exotic atoms remains vague. In this study, the unutilized inert base sites of MoS2 were activated via an oxygen-aided P-substituted method (denoted as POMS). Molecular structural tests and analyses of POMS indicated that the inert MoS2 substrate is activated when the inerratic crystal phases transform to amorphous phases in the P-doping process. The fully activated inert base planes provide sufficient reaction sites for photo-oxidized water contaminants. The designed POMS presented superior activity in organic degradation and completely removed sulfamethoxazole within 20 min. Uncovering these operational principles provides a theoretical basis for designing effective catalysts.
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高影响因子
International Journal of Electrochemical Science
·
2023
·
IF 1.5
Hui Xu,Guangran Ma,Meijuan Wu,Xia Peng,Lin Wang,Fugang Xu
In this study, a new hybrid PMA-MoS2-rGO composed of phosphomolybdic acid (PMA), MoS2, and reduced graphene oxide (rGO) was prepared for sensitive electrochemical detection of nitrite. The hybrid was prepared by a facile one-pot hydrothermal reaction, and PMA was introduced as active species for catalytic oxidation of nitrite and Mo source of MoS2. The structure and component of the product were characterized by SEM, Raman and EDS, and its catalysis toward nitrite oxidation was investigated by several electrochemical methods. The results revealed the hybrid composed of flower-sphere-like MoS2 interwind with rGO sheet while PMA doped in them, forming a three-dimensional porous structure. The MoS2 flower-sphere greatly reduced the aggregation of rGO and increased active surface area of the hybrid. Introducing rGO improved the conductivity and greatly enhanced the catalytic current. PMA played a dominate role in catalytic oxidation of nitrite. Owning to these synergy interactions, the hybrid exhibited greatly enhanced catalysis for nitrite oxidation than MoS2 or PMA-MoS2. The hybrid was used for fabricating a nitrite electrochemical sensor, which showed a linear rang of 0.5 μM to 8000 μM and a LOD of 0.2 μM (S/N=3). The sensor also showed good selectivity and stability with satisfactory recoveries for real sample test. The PMA-MoS2-rGO hybrid with easy preparation, porous structure, high stability and good catalysis holds great potential in environmental monitoring, chemical analysis, and so on.
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高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2024
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IF 8.1
Tingyan Deng,Zhen Cao,Fan Ni,Li Zhao,Fei Shen,Jianmei Zou,Yanzong Zhang,Yating Chen,Jinsong He
The novel strategy of thin-film nanocomposite loose nanofiltration (LNF) membranes incorporating an interlayer of nanomaterials has raised growing interests for the high-performance membrane design. Although the effects of membrane structure on separation performance have been elucidated for a long time, however, the quantitative structure-performance relationship of interlayer-based LNF membranes has not been established. In this study, we established the structure-performance relationship of TA-MoS 2 interlayer based LNF membranes from a quantitative level for the first time. The correlation heat map analysis identified four key structural parameters (e.g. selective layer thickness, crosslinking degree, water contact angle, and zeta potential) for water permeability as well as dye rejection, and three key structural parameters (e.g. selective layer thickness, crosslinking degree, and zeta potential) for salts rejection, respectively. Furthermore, the multiple linear regression analysis revealed the rigorous mathematic modeling of key structural parameters-separation performance relationships with all R 2 values above 0.899, and determined the contributions of each key structural parameter to the separation performance in a quantitative level. Finally, the optimal TA-MoS 2 interlayer based LNF membrane exhibited a high water permeability of 80.2 LMH·bar −1 , effective separation of dye/salts (rejection rate: congo red (99.0%), methyl blue (95.1%), Na 2 SO 4 (1.5%) and NaCl (0.5%)), good stability and antifouling properties (i.e. water flux recovery rate (FRR) of 96% for humic acid). This study can pave the way of quantitatively design of interlayer-based LNF membrane with targeted performance.
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高影响因子
ENVIRONMENTAL TECHNOLOGY
·
2024
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IF 2.2
Shikun Liang,Yunzhan Ying,Xiangwei Xu,Chengbo Qian,Long Jiang,Jing Zhou,Yulong Wan,Lie Wang,Yuyuan Yao
The widespread use of emerging refractory organic contaminants poses a significant threat to human health, prompting the need for a cost-effective and efficient removal strategy. While the iron ions/PMS system effectively removes organic pollutants, slow Fe3+ to Fe2+ transformation hampers its efficiency, and the homogeneous distribution of iron ions complicates separation, resulting in secondary sludge pollution. Herein, we developed a novel submicron Fe-MoS2 (S-Fe-MoS2) catalyst with abundant surface cationic groups and sulfur vacancy through a cationic polyacrylamide aerogels (CPAMA) confined hydrothermal synthesis strategy. These features promote active site exposure, enhance reactant adsorption, and accelerate electron transfer between Mo and Fe sites, improving catalytic kinetics and promoting Fe3+/Fe2+ cycle for PMS activation. As a result, the S-Fe-MoS2/PMS system exhibited a high catalytic rate constant (kobs) of 0.32 min−1, in the degradation of 4-chlorophenol (4-CP), 1.5 times higher than that of the conventional Fe-MoS2/PMS system. It also achieved 82.9% total organic carbon (TOC) degradation within 60 min. Additionally, it possessed similar degradation performance for various organic pollutants, along with remarkable reusability (four cycles) and broad pH adaptability (2–8), indicating significant potential for widespread application. This study provided a new way for developing advanced heterogeneous catalysts with high efficiency for water treatment.
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DOI
PubMed
高影响因子
ACS Applied Energy Materials
·
2025
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IF 5.5
Ye Gao,Aihua Yan,Huaqi Yuan,Fei Huang,Zigao Su,Wenxue Zhao,Jixu Zhang,Bolei Hui,Heng Wang
Artificial regulation of the charge transfer pathway is an effective strategy for optimizing the charge dynamics and enhancing the photocatalytic hydrogen production. Herein, MoS2/Sv-ZnIn2S4/Ni(OH)2 composites were synthesized by an in situ structure-tailored technique. Systematic investigations confirmed the existence of sulfur vacancy (Sv), Ohmic-type MoS2/Sv-ZnIn2S4 junction, and p-n-type Sv-ZnIn2S4/Ni(OH)2 heterojunction in MoS2/Sv-ZnIn2S4/Ni(OH)2 composites. Specifically, n-type MoS2 and p-type Ni(OH)2 acted as the electron transport layer and hole transport layer, which not only achieved the carrier spatial separation and directional charge transfer but also suppressed the carrier recombination and enhanced the hydrogen reduction reaction dynamics. As a result, the optimized composites displayed an outstanding photocatalytic H2-releasing rate of 12.34 mmol·g–1·h–1, which was 5.96 times higher than that of pristine ZnIn2S4. This work provides an unusual opinion for developing the multichannel-modification photocatalysts with a controllable charge transfer route.
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高影响因子
Journal of Materials Chemistry C
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2025
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IF 5.1
Zipan Jiao,Xinglan Zhou,Junjie Yu,Xiaoyan Lan,Yi Shi,Jitong Li,Bingxin Liu,Yongcheng Li,Guilin Chen,Riming Hu,Peng Zhang,Benhua Xu
This research investigates the resistive switching (RS) properties of resistive random-access memory (RRAM) devices incorporating MoS2 quantum dots (QDs) and MoS2 nanosheets. The analysis reveals that reducing the size of MoS2 nanosheets to the size of QDs enhances the bandgap, surface–volume ratio, and the number of edge states, thereby providing additional electron trapping sites for the formation and rupture of conductive filaments (CFs) in RRAM devices. The Al/MoS2 QDs–PVA/ITO/glass devices exhibit enhanced switching ratios and memory windows in comparison to RRAM devices based on MoS2 nanosheets. The enhanced RS performance of the MoS2 QDs can be attributed to their ultra-small size, which enables the concentration of the surrounding electric field and a higher density of sulfur vacancies that facilitate the formation of CFs. However, it is important to highlight that high-temperature RS performance tests indicate a decline in device performance as the temperature increases. The findings presented herein demonstrate that the utilization of MoS2 QDs provides a novel avenue for significantly enhancing the data storage capacity of MoS2-based RRAM devices.
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高影响因子
Inorganics
·
2024
·Vol. 12
·期 8
·229
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IF 3.1
Zhouqian Chen,Zongmei Li,Manyi Zhang,Yujia Wang,Siang Zhang,Yuanyuan Cheng
FeCo2O4/MoS2binary composite catalysts were prepared by the hydrothermal method and calcination method. In this paper, the morphology and structure of the materials were characterized by means of SEM, EDS, XRD, and XPS. It was found that MoS2has high activity and good stability in HER, and and it has more prospect than noble metal catalysts. In oxygen evolution chemical kinetics, its rich redox potential allowed it to adsorb OH−on (Co2+/Co3+, Fe2+/Fe3+) and enhanced the activity of OER. The cross-nanosheet structure of the FeCo2O4/MoS2composite catalyst exposed more catalytic sites and accelerated charge transfer to achieve more efficient mass transfer. FeCo2O4/MoS2as an anode and cathode was assembled into a two-electrode system in overall water splitting, which showed good catalytic activity. When the composite ratio of FeCo2O4to MoS2was 1:0.3, the composite catalyst had the best catalytic activity. The results show that when FeCo2O4/MoS2is used as a cathode and anode to assemble an alkaline cell, respectively, the voltage for total water electrolysis is 1.59 V at a current density of 10 mA cm−2in a 1 M KOH electrolyte, it can keep good stability in a 10 h test with electrolyzed water, and its current retention rate is 98.5%.
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高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
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2023
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IF 22.1
Chao Wu,Weixin Huang,Huanmin Liu,Kangle Lv,Qin Li
Facing the increasingly serious issues of energy crisis and environmental pollution, it is vital to develop efficient and durable photocatalysis systems for hydrogen (H 2 ) production from water splitting. However, for the famous CdS-based systems, the bottleneck of poor efficiency and low stability arisen from photocorrosion has not been broken through yet. In this study, a ternary composite of CdS , MoS 2 and Ti 3 C 2 MXene with intimately contact interfaces was successfully constructed via an in situ growth method, which exhibited reinforced photocatalytic H 2 -production activity and increased photocorrosion resistant capability. Both of experimental characterizations and density functional theory (DFT) calculations well proved that the photogenerated holes and electrons of CdS timely migrated to Ti 3 C 2 and MoS 2 , respectively. As a consequence, the optimal sample displayed a high H 2 production rate of 14.88 mmol·h −1 ·g −1 with a lifetime of up to 78 h, and the component and structure of the composite were kept intact during the photocatalysis reaction. This work highlights the synergistic effect of the Ti 3 C 2 MXene and MoS 2 as redox dual cocatalysts on the promoted photocatalytic performance and durability of CdS, which can be anticipated to significantly enhance the commercial availability of CdS and even boost its incorporation into industrial applications.
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高影响因子
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
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2025
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IF 4.1
Peifen Wang,Danyang Liu,Xiaowei An,Xuli Ma,Xiao Du,Xiaogang Hao,Abuliti Abudula,Guoqing Guan
In this study, a series of vanadium-doped MoS 2 (V-MoS 2 ) powders synthesized via a hydrothermal method were coated on nickel foam (NF) as the cathode in microbial electrolysis cells (MECs). It is verified that the doped V was incorporated into the MoS 2 lattice with the state of V 2+ and V 4+ , and especially V 2+ bonded with edge the sulfur atom while V 4+ replaced the Mo 4+ and embedded in the crystal lattice of Mo S. Meanwhile, the doping ratio of V 2+ /V 4+ decreased with the increase in the doping content of V, revealing that the V 4+ is more beneficial for the efficiency of V-doping. Electrochemical testing demonstrated that the optimal doping amount of 10 % V significantly enhanced the electrochemical activity of MoS 2 by the activating of the inert basal plane. In the MEC system, the 10 % V-MoS 2 based electrode achieved a peak current density of 84.3 mA cm −2 with a hydrogen production rate of 289 L H₂ L −1 cycle −1 , a coulombic efficiency of 80.61 % and a cathodic hydrogen conversion efficiency of 44.84 %, which is much better than many conventional MEC catalysts, demonstrating a great potential for green hydrogen production.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Xiaohua Yang,Man Zhou,Yihang Tang,Jing Li,Lifu Zhou,Wentao Xu,Yao Xiao,Jin Zhao,Yuzhe Zhang,Zhongyu Li
Addressing global freshwater scarcity, solar-driven interfacial evaporation (SDIE) technology has garnered significant attention due to its sustainability and economic advantages. However, challenges including salt accumulation, substantial heat loss, and biofouling still persist when treating the water in nature. Herein, we developed a BM/BPMC Janus aerogel evaporator composed of a hydrophilic top layer and a hydrophobic bottom layer. This aerogel with a self-floating capability, reduced water evaporation enthalpy, enhanced anti-biofouling properties, salt resistance, and efficient thermal localization. Its hydrophilic top layer, fabricated by embedding MoS 2 @MWCNTs-OH within a bacterial cellulose (BC)/polyethyleneimine (PEI) matrix, exhibits synergistic photothermal-antibacterial functionality. The hydrophobic insulating bottom layer, constructed from silanized BC, achieves an ultralow thermal conductivity of 0.036 W·m −1 ·K −1 , enabling highly efficient thermal localization. Vertically aligned microchannels ensure rapid water supply and salt reflux. Synergistically, the positively charged surface of the hydrophilic layer also induces a Donnan effect, significantly enhancing system salt resistance. Furthermore, this cationic evaporator concurrently achieves highly selective adsorption of anionic dyes (>97.8 % removal for MO/CR). Hydroxyl/amino functional groups enriched within the hydrophilic layer markedly reduce evaporation enthalpy by lowering the activation energy of water molecules. Under 1 kW m −2 solar irradiation, the evaporator achieves a water evaporation rate of 2.78 kg·m −2 ·h −1 and an energy conversion efficiency of 113.2 %. This study presents a novel strategy for efficient desalination and synergistic contaminant removal in complex aqueous environments.
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高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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2025
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IF 8.3
Bang Li,Xiaohai Zheng,Ganchang Lei,Shiping Wang,Yingying Zhan,Lijuan Shen,Lilong Jiang
The reduction of nitrobenzene (Ph-NO 2 ) to aniline (Ph-NH 2 ) utilizes H 2 S as a hydrogen donor. This approach alleviates environmental pollution while enabling resource utilization. However, it remains a challenge to develop sulfur-resistant catalysts. Herein, we fabricated a series of MoS 2 /ZrO 2 catalysts via crystalline phase modulation engineering for the reduction of Ph-NO 2 by H 2 S to Ph-NH 2 . Systematic experiments demonstrate that amorphous ZrO 2 has the highest concentration of oxygen vacancies (O v ), which exhibits the highest activity and stability. As a result, the MoS 2 /a-ZrO 2 achieves a Ph-NO 2 conversion of 92 % and a Ph-NH 2 selectivity of 85.7 % at 1.5 MPa and 90 °C, which is superior to MoS 2 /m-ZrO 2 , MoS 2 /t-ZrO 2 , MoS 2 and ZrO 2 . In situ FT-IR measurements combined with full two-dimensional time of flight chromatography suggest a double H-induced dissociation pathway for the reduction of Ph-NO 2 to Ph-NH 2 by H 2 S. This study offers a viable strategy for the valorization of H 2 S into valuable resources.
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高影响因子
危险品化学品经营许可证（带存储）