LUMINESCENCE
·
2024
·Vol. 39
·期 1
·e4675
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IF 3.2
Gerile Oudeng,Junguo Ni,Hao Wu,Honglian Wu,Mo Yang,Chunyi Wen,Yuanwei Wang,Hui Tan
The coronavirus disease-2019 pandemic reflects the underdevelopment of point-of-care diagnostic technology. Nuclei acid (NA) detection is the “gold standard” method for the early diagnosis of the B.1.1.529 (Omicron) variant of severe acute respiratory syndrome-coronavirus disease-2. Polymerase chain reaction is the main method for NA detection but requires considerable manpower and sample processing taking ≥ 3 h. To simplify the operation processes and reduce the detection time, exonuclease III (Exo III)-aided MoS 2 /AIE nanoprobes were developed for rapid and sensitive detection of the oligonucleotides of Omicron. Molybdenum disulfide (MoS 2 ) nanosheets with excellent optical absorbance and distinguishable affinity to single-strand and duplex DNAs were applied as quenchers, and aggregation-induced emission (AIE) molecules with high luminous efficiency were designed as donor in fluorescence resonance energy transfer-based nanoprobes. Exo III with catalytic capability was used for signal amplification to increase the sensitivity of detection. The composite nanoprobes detected the mutated nucleocapsid (N)-gene and spike (S)-gene oligonucleotides of Omicron within 40 min with a limit of detection of 4.7 pM, and showed great potential for application in community medicine.
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Journal of Environmental Chemical Engineering
·
2024
·
IF 7.4
Siyuan Diao,Lili Meng,Lanlan Feng
The application of peroxymonosulfate (PMS)-based advanced oxidation processes , facilitated by the incorporation of metal-deposited MoS 2 catalyst, has attracted considerable interest in recent years within the scientific community. Nevertheless, investigating the structure-performance relationship between MoS 2 and deposited metal still presents a formidable challenge, yet a highly desirable pursuit. In this study, a Cu-MoS 2 single-atom catalyst (SAC) was successfully synthesized by a photo-deposition method, wherein Cu ions were deposited on the MoS 2 surface. The Cu-MoS 2 /PMS system exhibits exceptional degradation performance for tetracycline (TC), with a removal efficiency reaching 96% at 60 min. Furthermore, the density functional theory (DFT) is applied to investigate the coordination microenvironment of the catalyst by depositing of Cu. Experimental and theoretical calculations results exhibit that, on one hand, the introduction of Cu decreases the adsorption energy barrier and enhances the adsorption capacity of the catalyst for PMS. On the other hand, the abundant presence of Cu on the surface of the MoS 2 facilitates an accelerated transfer of electron , availing the formation of reactive oxygen species (ROS) via the distinct pathway: MoS 2 → transition metal → PMS. Concurrently, the synergistic interaction between Mo and Cu expedites rapid valence evolution of Mo 4+ /Mo 5+ /Mo 6+ and Cu + /Cu 2+ , thereby further enhancing the PMS activation. Hence, adjusting the coordination microenvironment of the catalyst represents a promising strategy for enhancing the catalytic activity.
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Small Structures
·
2024
·
IF 13.9
Wenxue Zhao,Aihua Yan,Zigao Su,Fei Huang,Quande Wang,Shihang Li,Shijian Lu,Chuanjian Wang,Tongyang Zhang,Jixu Zhang,Ye Gao,Huaqi Yuan
Photocatalytic water splitting into hydrogen production provides a new avenue to produce clean chemical fuels. However, developing high-efficiency photocatalytic materials still remains a challenge till now. Herein, multiobjective-optimization MoS 2 /Cd-ZnIn 2 S 4 /CdS (MS/CZIS/CS) composites are successfully constructed by an in situ structure-tailored technique. Benefiting from the synergistic feature integrating sulfur vacancy, II-type CZIS/CS heterojunction and Schottky-type MS/CS heterojunction, such composites not only effectively steer photogenerated carrier transfer but also markedly expedite surface reaction kinetics for hydrogen reduction reaction. As a result, an optimal hydrogen evolution rate of 11.49 mmol g −1 h −1 is achieved over the MS/CZIS/CS catalysts, which is approximately 4.79 times higher than that of pristine ZIS (2.40 mmol g −1 h −1 ). This work provides some new inspirations for the steering of carrier transfer and the design of multiobjective-optimization photocatalysts with high efficiency.
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Journal of Materials Chemistry C
·
2025
·
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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Nanoscale Advances
·
2024
·Vol. 6
·期 24
·6386-6397
·
IF 4.6
Meng Wei,Hanqing Lu,Zhen Wang,Baowen Lu,Pengtao Wang,Xinxin Zhang,Bingjie Feng,Yingjie Xie,Tao Zhang,Guanghui Liu,Song Xu
The slow redox kinetics and shuttle effect of polysulfides severely obstruct the further development of lithium–sulfur (Li–S) batteries. Constructing sulfur host materials with high conductivity and catalytic capability is well acknowledged as an effective strategy for promoting polysulfide conversion. Herein, a well-designed MoS2 QDs-CNTs/S@Ni(OH)2 (labeled as MoS2 QDs-CNTs/S@NH) cathode was synthesized via a hydrothermal process, in which conductive polar MoS2 quantum dot-decorated carbon nanotube (CNT) networks coated with an ultrathin Ni(OH)2 layer acted as an efficient electrocatalyst. MoS2 QD nanoparticles with a high conductivity and catalytic nature can enhance the kinetics of polysulfide conversion, expedite Li2S nucleation, and decrease the reaction energy barrier. The thin outer Ni(OH)2 layer physically confines active sulfur and meanwhile provides abundant sites for adsorption and conversion of polysulfides. Benefiting from these merits, a battery using MoS2 QDs-CNTs/S@NH as the sulfur host cathode exhibits excellent electrochemical performances with rate capabilities of 953.7 mA h g−1 at 0.1C and 606.6 mA h g−1 at 2.0C. A prominent cycling stability of a 0.052% decay rate per cycle after 800 cycles is achieved even at 2C.
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ENVIRONMENTAL TECHNOLOGY
·
2024
·
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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APPLIED SURFACE SCIENCE
·
2024
·
IF 6.3
Kequn Sun,Yinghui Dong,Lulu Yao,Mausumi Mahapatra,Yufu Xu
In this investigation, the surface tribological behavior of YG8/TC4 contacts under microgel lubrication was explored, utilizing thermal- and pH-sensitive PNIPAM-co-PAA-(IF-MoS 2 /GO) composite microgels as lubricant additives. Through the application of a ball-on-disk reciprocating tribometer, the study demonstrated the outstanding lubrication capabilities of the composite microgels. The lubrication process involving PNIPAM-co-PAA-(IF-MoS 2 /GO) composite microgels initiated a tribo-chemical reaction, leading to the generation of a larger quantity of TiS 2 with exceptional lubricating properties on the friction surface compared to alternative lubrication conditions. The effective isolation of the friction pair by PNIPAM-co-PAA composite microgels contributed to the reduction in tribo-oxidation of the sliding surfaces , while the presence of IF-MoS 2 facilitated the formation of TiS 2 . Furthermore, the facile sliding property of GO nanosheets played a crucial role in achieving overall excellent lubrication performance. The synergistic effects arising from the components in PNIPAM-co-PAA-(IF-MoS 2 /GO) composite microgels introduce a novel and effective strategy for controlling the friction and wear of YG8/TC4 contacts.
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RSC Advances
·
2024
·Vol. 14
·期 47
·34606-34610
·
IF 3.9
Jianfeng Qiu,Yanping Liu,Minxian Cao,Luqi Xie,Yongkun Liu,Hongwen Li,Junqiang Lu,Qifeng Liang,Jiaqi Pan,Chaorong Li
The MoS2/MoO3 nano-heterojunction photocatalyst was synthesized via the in situ oxidation sintering method. The properties of the samples were characterized by XRD, SEM, EDX, TEM, UV-vis, PL, FT-IR, BET and electrochemical techniques. The MoS2/MoO3 nano-heterojunction (MS-400) exhibited significantly better photocatalytic activity toward Rhodamine B degradation (0.42634 h−1) than monomer MoS2 (∼8.0-folds) and MoO3 (∼25.6-folds). This is mainly attributed to the MoS2/MoO3 heterojunction interface having an appropriate potential gradient that can promote the interface carrier transportation/separation to optimize the carrier efficiency and increase the solar absorption and specific surface areas/active sites via microstructures.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2025
·
IF 9.7
Shixian Chen,Gaohui Du,Kaiting Hu,Yunting Wang,Chengcheng Feng,Yunyun Liu,Yan Cheng,Jinchao Cui,Di Han,Huayu Li,Libing Yao,Dong Wang,Qingmei Su
The commercialization of lithium‑sulfur (Li S) batteries faces fundamental issues from polysulfide shuttling to inefficient redox kinetics, compounded by the absence of systematic methods for catalyst design. Herein, we present a machine learning (ML)-driven strategy to design MoS 2 /MoO 3 heterostructures anchored on nitrogen-doped hollow carbon shells (NCS) via gradient boosting decision trees modeling. The ML-guided optimization identifies critical synthesis parameters (e.g., carbonization temperature, oxidation duration) to balance adsorption capacity and catalytic activity. The resulting heterostructure exhibits superior polysulfide confinement and accelerated conversion kinetics, enabled by MoO 3 -induced anchoring sites and NCS-accelerated electron/ion transport. The Li S batteries integrated with the MoS 2 /MoO 3 -NCS-modified separators deliver a remarkable initial capacity of 1002 mAh g −1 at 1C and remain 661 mAh g −1 after 500 cycles, with a low capacity decay rate of 0.068 %. Even at a high sulfur loading of 8.4 mg cm −2 , the pouch cell maintains 7.25 mAh cm −2 areal capacity with 90.1 % retention after 100 cycles. This work establishes a paradigm for ML-accelerated electrocatalyst design, addressing critical challenges in Li S batteries and advancing scalable synthesis strategies for next-generation energy storage.
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ACS Applied Materials & Interfaces
·
2025
·
IF 8.2
Pengjie Zhong,Youqiang Huang,Qinglong Hu,Xin Yao,Wei Liu,Keyu Han,Gongxun Bai
Solar-driven interfacial evaporation has garnered significant attention as a sustainable technology for freshwater production. However, its widespread application is impeded by challenges, such as complex fabrication processes, high costs, and vulnerability to pore clogging. Herein, we present an E-shaped evaporator constructed through in situ integration of a binary photothermal nanocomposite comprising reduced graphene oxide and molybdenum disulfide (rGO/MoS2) onto a polyurethane sponge substrate. The synergistic light absorption enhancement of the rGO/MoS2 hybrid is rationally utilized to achieve excellent broadband solar harvesting. The distinctive E-shaped configuration simultaneously optimizes light utilization through multiangle photon capture and facilitates rapid water transport via hierarchical channels. This integrated system demonstrates exceptional operational stability with a cumulative water yield of 16.58 kg·m–2 under 12 h natural illumination, which could effectively facilitate seawater desalination and wastewater purification. The proposed fabrication strategy, characterized by cost-effectiveness and scalable manufacturing compatibility, paves the way for practical implementation in off-grid water purification systems.
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ACS Applied Energy Materials
·
2025
·
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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JOURNAL OF SOLID STATE ELECTROCHEMISTRY
·
2025
·
IF 2.6
Xiao Feng,Wang Lei,He Qihang,Xu Fan,Wu Donghua,Chen Chao,He Ping,Tang Bin
Designing promising electrode material for supercapacitor application with rich redox activities, high capacity and great cycling stability has become a research priority. Herein, a nanohybrid (CoS 1.097 -NiS-MoS 2 ) with nanosheets combining nanorods morphology is prepared by high-temperature pyrolysis sulfuration of ZIF-67/NiMoO 4 . Co-existence of multiple crystalline phases is favorable for enriching electrochemical active sites and facilitating electron transfer. Consequently, CoS 1.097 -NiS-MoS 2 displays better supercapacitor performance with a specific capacity of 373.6 C g −1 at current density of 1 A g −1 and excellent cycling stability of 70.01% after 3000 cycles, surpassing CoS 1.097 (49.1 C g −1 ; 59.26%) and NiS-MoS 2 (105.8 C g −1 ; 62.00%). Moreover, a hybrid supercapacitor is assembled with CoS 1.097 -NiS-MoS 2 and activated carbon, exhibiting high energy density of 21.0 Wh kg −1 at 800 W kg −1 . This work opens a path for preparation of promising ternary metal sulfide-based materials for the field of energy storage.
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