APPLIED CATALYSIS B-ENVIRONMENTAL
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2025
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IF 21.1
Xiangling Wang,Zhimin Li,Zhengfu Zhang,Chengping Li,Rui Bao,Zhishan Li,Jinsong Wang
Elevating the lattice oxygen p -band center (ε p ) is critical to trigger the lattice oxygen mechanism (LOM) for boosting oxygen evolution reaction (OER) activity in advanced electrocatalysts, but it also causes a reduced d -band center (ε d ) due to the coupled metal-oxygen d - p orbital, resulting in a sluggish regeneration of lattice oxygen. Herein, we surmount this challenge by heterojunction and defect-engineering to raise both ε d and ε p of CeO 2 NPs/D-Ni(OH) 2 . The formative built-in electric field and defect reduce the electronic density of Ni(OH) 2 , effectually decreasing the deprotonation energy and promoting its surface reconstruction into γ-NiOOH, the formative high valence Ni δ+ raises ε p to trigger LOM. Meanwhile, the ε d is upshifted by the high f -band of CeO 2 , accelerating the adsorption of oxygenous species to replenish the lattice oxygen vacancies. Consequently, the CeO 2 NPs/D-Ni(OH) 2 demonstrates exceptional OER activity, requiring only 169 mV to reach 10 mA cm −2 , and maintains impressive stability over 300 h at 1000 mA cm −2 in 1 M KOH. This work presents a novel strategy to balance lattice oxygen participation and regeneration by rising d - p orbital for inducing and maintaining LOM activity.
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NEW JOURNAL OF CHEMISTRY
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2025
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IF 2.5
Qixuan Qin,Yizhuo Fan,Wei Wang
In this work, Fe2O3 nanocubes doped with different amounts of transition metals (Cu, Zn) were prepared by hydrothermal synthesis and annealing method. Gas sensing performance tests show that the prepared pristine Fe2O3 exhibits the conductive property of an n-type material, while Cu&Zn doped Fe2O3 exhibit p-type conductive property. The sensors based on 5 at% Cu&Zn doped Fe2O3 showed significantly improved response, selectivity, long-term stability, and moisture resistance to acetone compared to the pristine Fe2O3 nanocubes. X-ray photoelectron spectroscopy (XPS) results confirmed that the adsorbed oxygen of 5 at% Cu&Zn doped Fe2O3 were significantly higher than that of the pristine Fe2O3, which is the main reason for the improved gas sensing performances. Therefore, this study provides an effective way to develop low-cost and high-performance gas sensors based on transition metal-doped metal oxide.
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CHEMICAL ENGINEERING JOURNAL
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2022
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IF 16.744
Yan Huang,Daixin Ye,Jing Yang,Huan Lu,Li Li,Yaping Ding
Herein, based on the dual-signal strategy, an electrochemical sensor with molecularly imprinted polymer (MIP) was designed for the analysis of p-Hydroxyacetophenone (p-HAP) for the first time. The sensor was fabricated by modifying the electrode with NiFe prussian blue analogue (NiFe-PBA) and followed by SnS 2 , obtaining the dual-signal from [Fe(CN) 6 ] 3−/4− at 0.20 V and NiFe-PBA at 0.52 V. In the electropolymerization of the MIP film, o-phenylenediamine was used as functional monomer and p-HAP acted as template molecule. After the adsorption of p-HAP, the two above oxidation peak currents decreased simultaneously compared with the elution, achieving the dual-signal analysis. Under the optimal conditions, the sensor exhibited a wide linear range of 10 −13 M to 10 −7 M and a low detection limit of 3.52 × 10 −14 M (3σ). Moreover, it was successfully applied to the p-HAP detection in human serum and environment water samples with satisfactory recovery.
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ELECTROPHORESIS
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2020
·Vol. 42
·期 6
·719-724
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IF 3.081
Evgeniya V. Polyakova,Olga V. Shuvaeva,Olga S. Koshcheeva,Yuliya E. Tyutereva,Ivan P. Pozdnyakov
Arsenic aromatic compounds including p-arsanylic acid (pASA) are still widely used in a number of countries as the feed additives in animal breeding resulting in its entering the environment. Under the influence of oxidizing agents or UV radiation, pASA undergoes transformations leading to generation of inorganic arsenic species that are more mobile and toxic than organic ones. On the one hand, an approach based on the treatment of contaminated waters by UV irradiation seems perspective for their detoxification, but the feasibility of this approach depends on the composition of the products forming as a result of photodegradation. In the present work, a CZE was applied for the study of the pASA degradation process during stationary (308 nm) photolysis in the presence of Fe(III)-oxalate complex. A developed assay allowed controlling the parent compounds and also As-containing products of pASA degradation, presented mainly by arsenate and arsenite ions. It was found that the main inorganic derivatives of the pASA photolytic conversions are presented by arsenate and arsenite ions whose ratio depends on the initial amount of pASA and reaction conditions.
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PubMed
高影响因子
ACS Applied Nano Materials
·
2025
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IF 5.5
Shunyu Shen,Qian Zhang,Weijia Guo,Gaojie Jiao,Yawen Wang,Han Wang,Kai Shao,Zhenjie Wang,Caicai Li,Xianyun Peng,Qingfeng Sun
The exploration of non-Pt catalysts that are highly efficient, durable, and cost-effective for the hydrogen evolution reaction (HER) is crucial for enhancing the energy efficiency of water splitting technologies. In this study, we fabricated an electrocatalyst comprising RuP2 nanoparticles decorated on N, P codoped cellulose nanofibers (CNFs)-derived carbon networks (RuP2/NPC) through a simple mixing-pyrolysis strategy. Specifically, the CNFs, which are rich in oxygen-containing functional groups, not only serve as dispersants to prevent the restacking of graphene oxide (GO) and the aggregation of RuP2 nanoparticles, thereby exposing more active sites, but also form a conductive network with GO to facilitate electron transport. Moreover, density functional theory (DFT) calculations indicate that the integration of NPC regulates the electronic structure of RuP2, resulting in a nearly thermoneutral ΔGH* at the Ru site of RuP2/NPC and making the HER process more feasible. Consequently, the synthesized catalyst exhibits excellent catalytic activity, achieving low overpotentials of 41 mV in 0.5 M H2SO4 and 52 mV in 1.0 M KOH to drive a current density of 10 mA cm–2, while maintaining robust stability. Notably, RuP2/NPC also demonstrates promising performance in alkaline seawater electrolysis, requiring an overpotential of merely 108 mV to support the same level of current density. This research significantly advances the application of CNFs-derived carbon materials in hydrogen production and contributes to the high-value utilization of forestry resources, thereby providing an inspiring avenue for the advancement of efficient and sustainable energy conversion technologies.
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ADVANCED FUNCTIONAL MATERIALS
·
2020
·Vol. 30
·期 10
·1909283
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IF 16.836
Shanshan Shi,Congli Sun,Xiuping Yin,Liying Shen,Qinhao Shi,Kangning Zhao,Yufeng Zhao,Jiujun Zhang
Transition metal phosphides (TMPs) possess high theoretical sodium storage capacities, but suffer from poor rate performance, due to their intrinsic low conductivity and large volume expansion upon sodiation/desodiation. Compositing TMPs with carbon materials or downsizing their feature size are recognized as efficient approaches to address the above issues. Nevertheless the surface-controlled capacitive behavior is generally dominated, which inevitably compromises the charge/discharge platform, and decreases the operational potential window in full-cell constructions. In this work, a novel architecture (FeP@OCF) with FeP quantum dots confined in P-doped 3D octahedral carbon framework/carbon nanotube is rationally designed. Such structure enables a simultaneous enhancement on the diffusion-controlled capacity in the platform region (2.3 folds), and the surface-controlled capacity in the slope region (2.9 folds) as compared to that of pure FeP. As a result, an excellent reversible capacity (674 mAh g −1 @ 0.1 A g −1 ) and a record high-rate performance (262 mAh g −1 @ 20 A g −1 ) are achieved. A full-cell FeP@OCF// Na 3 V 2 (PO 4 ) 3 is also constructed showing an outstandingly high energy density of 185 Wh kg −1 (based on the total mass of active materials in both electrodes), which outperforms the state-of-the art TMP-based sodium-ion battery full cells.
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SEPARATION AND PURIFICATION TECHNOLOGY
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2025
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IF 9
Jianglong Shi,Chen Sun,Zongli Huo,Jia Gu,Jun Ma
This study demonstrated the synergy between peroxymonosulfate (PMS) and p- benzoquinone ( p -BQ) in the sulfamethoxazole (SMX) degradation under the ultraviolet (UV) irradiation. In the UV/ p -BQ/PMS process, the SMX degradation showed positive dependence on the initial dosages of PMS, p -BQ and SMX. The variation of the observed pseudo-first-order rate constant ( k obs ) exhibited aligned with the speciation of SO 5 2− across pH 7–10, and the anomalous decline of k obs emerged at pH 10–12. It suggested that SO 5 2− might be significant for the SMX degradation. The quenching experiments and the electron paramagnetic resonance spectroscopy confirmed the dominant reactive oxygen species (ROS) (i.e., sulfate radicals (SO 4 •– ), hydroxyl radicals (OH • ), singlet oxygen ( 1 O 2 ), peroxymonosulfate anion radical (SO 5 •– )) in the UV/ p -BQ/PMS process. The generation of SO 5 •– might be attributed to the single electron transfer (SET) mechanism from PMS to the triplet excited-state of p -BQ, which subsequently triggered the formation of SO 4 •– and 1 O 2 via disproportionation. The possible degradation pathways of SMX were identified by LC-MS, including the hydroxylation, the cleavage of S N bond, the nitration and the oxidation of amino group. Compared to p -BQ, methyl- p -benzoquinone, with an electron donating group, was found to suppress the activation of PMS, which validated the rationality of the SET mechanism. While tetrachloro-1,4-benzoquinone, with an electron withdrawing group, inhibited the SMX degradation by scavenging the generated radicals. Furthermore, the coexisting ions made no diffidence to the SMX degradation. The results provided the critical insights into the role of quinones in the PMS-based advanced oxidation processes for water treatment.
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CHEMICAL ENGINEERING JOURNAL
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2025
·
IF 13.2
Ju-Xiang Chen,Jia-Wei Song,Nai-Yun Gao,Yu-Qiong Gao,Yi-Xuan Hu
Sodium p-perfluorous nonenoxybenzenesulfonate (OBS), as a novel perfluorinated compound (PFC), has garnered significant attention due to its widespread application. However, its molecular structure is highly stable, making it difficult to degrade. This experiment employs an ANN model and SHAP interpretation method to optimize DBD plasma for highly effective removal of OBS. Under multi-objective optimization of the ANN model (treatment time: 20 min; pH: 4; conductivity: 36 μS/cm; initial concentration: 37.5 mg/L; input power: 40.5 W), the OBS removal rate and energy yield were 91.8 % and 7.659 g/kW•h, respectively. In SHAP analysis, treatment time has the greatest impact on both removal rate and energy yield. Even in the presence of interfering inorganic anions (NO 3 − , HCO 3 − , and Cl − ), DBD plasma could achieve an effective removal rate of over 60 % for OBS. Free radical quenching experiments, density functional theory (DFT), and LC-MS indicate that OBS undergoes under the influence of •OH, •O 2 − , 1 O 2 , and e aq − , involving desulfonation processes, ether cleavage and perfluorinated chain shortening processes. According to ECOASR and T.E.S.T. toxicity analyses, although some toxic byproducts may be generated during the OBS removal process, the environmental risk was low. In complex real-world aquatic environments, the OBS still achieves an effective removal rate exceeding 70 %, demonstrating the broad application prospects of DBD plasma.
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ACTA PHYSICO-CHIMICA SINICA
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2024
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IF 10.8
Mengfei He,Chao Chen,Yue Tang,Si Meng,Zunfa Wang,Liyu Wang,Jiabao Xing,Xinyu Zhang,Jiahui Huang,Jiangbo Lu,Hongmei Jing,Xiangyu Liu,Hua Xu
Two-dimensional (2D) transition-metal dichalcogenides (TMDs) exhibit diverse structures, encompassing a broad spectrum of electronic types ranging from metal, semiconductor, to insulator and topological insulator. They hold immense potential for both Moore and more-than-Moore device applications. Among them, manganese telluride (MnTe), an emerging nonlayered 2D material, has garnered considerable attention due to its exceptional properties and significant application potential in next-generation electronic and optoelectronic devices. However, the controllable synthesis of ultra-thin 2D MnTe remains a great challenge, which hindering the comprehensive exploration of its fundamental properties and potential applications. In this study, we present the synthesis of large-area MnTe nanosheets through chemical vapor deposition growth, showcasing its thickness-dependent properties and device applications. By increasing the growth temperature from 500 to 750 °C, the MnTe nanosheets’ thickness transitions from thin-layer to a thick flake, the domain size increases from 10 to 125 μm, the morphology changes from triangle to hexagon, culminating in a highly symmetrical round shape. Structural characterization and second harmonic generation measurements reveal that the obtained MnTe nanosheets exhibit high crystallization quality and superior second-order optical nonlinearity. The field effect transistor (FET) constructed with thin-layer MnTe demonstrates a p-type semiconductor characteristic, transitioning to a semimetal feature as the thickness increases to a thick flake. Leveraging these thickness-dependent electrical conduction transition features, we explore diverse applications of MnTe with varying thicknesses. The semiconductive thin-layer MnTe, serving as the photosensitive channel in a device, achieves superior photoresponse, showcasing considerable potential for photodetection appliations. The semimetallic thick-layer MnTe, acting as the contact electrode in a MoS 2 FET, significantly enhances device performance, with carrier mobility increasing from 12.76 cm 2 V −1 s −1 (Au contact) to 47.34 cm 2 V −1 s −1 (MnTe contact). This work lays the foundation for the controllable synthesis of nonlayered 2D MnTe and provides insights into its prospective development for constructing innovative electronic and optoelectronic devices.
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JOURNAL OF ELECTROANALYTICAL CHEMISTRY
·
2020
·
IF 3.807
Jun Gao,Ping He,Tiantian Yang,Xuejiao Wang,Lianhong Zhou,Qihang He,Lingpu Jia,Hongquan Deng,Hui Zhang,Bin Jia,Xiaochun He
Constructing a sensitive voltammetric platform to analyze highly toxic organic pollutant p-chloronitrobenzene (p-CNB) is highly desirable in environmental monitoring. Herein, a composite consisting of nickel-based metal-organic framework (Ni-MOF) and graphene oxide (GO) was successfully prepared by facile and cost-efficient chemical precipitation , and it was further used as a modified material to develop an electrochemical sensor for p-CNB. Electrochemical properties of as-prepared sensor were investigated by electrochemical impedance spectroscopy , cyclic voltammetry and differential pulse voltammetry . As a result, the composite sensor showed superior electrocatalytic performance towards the oxidation of p-CNB in a concentration range of 0.10–300.0 μM, and the detection limit was 8.0 nM (S/N = 3). Furthermore, as-prepared Ni-MOF/GO composite based sensor exhibited favorable reproducibility, durable stability and prominent selectivity. The practicability of the sensor was evaluated by detecting p-CNB in real tap water samples and satisfactory recovery rates were obtained, revealing its potential application for detection of p-CNB in water environment.
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高影响因子
CERAMICS INTERNATIONAL
·
2021
·
IF 4.527
Yao Zhang,Jingshu Yuan,Liang Zhao,Boyu Wu,Bolin Zhang,Pianpian Zhang,Shengen Zhang,Chaofang Dong
Graphite carbon nitride (g-C 3 N 4 ) is regarded as a potential candidate to settle environmental and energy issues, but its activity remains unsatisfactory due to the huge exciton effect and delayed charge transfer. Herein, the effects of phosphorus-doping and two-dimensional (2D) porous structures on the transition among singlet excitons, triplet excitons, and carriers and consequently the regulation mechanism of reactive oxygen species have been intensively studied. The calculations of the density functional theory and experimental results confirmed that P-doping could induce a dual built-in electric field to provide a driving force (up to 0.3 eV) for exciton dissociation. The light response capability, exciton dissociation, and carrier migration efficiency were significantly enhanced by the synergistic effect of the dual electric field and 2D porous structure. The optimal sample exhibited excellent H 2 evolution rate and tetracycline degradation rate under visible-light irradiation which were approximately 25 and 7.1 times higher than those of bulk g-C 3 N 4 , respectively. The improved photocatalytic activity can also be demonstrated by a 2.9-fold and 3.2-fold increase in ·O 2 – and H 2 O 2 production, respectively. This work provides a new perspective and approach to improve the performance of polymer photocatalysts and the targeted regulation of active species using exciton engineering.
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SEPARATION AND PURIFICATION TECHNOLOGY
·
2024
·
IF 8.1
Jin Xu,Guanhao Jiao,Guo Sheng,Naipeng Lin,Bingjie Yang,Jinfeng Wang,Hu Jiang,Yin Wang,Xiaodong Zhang
The LaFe 0.5 Cu 0.5 O 3 perovskite synthesised by MOFs template method was compounded with Mxene Ti 3 C 2 , and the novel catalyst M-Ti 3 C 2 /LFCO-P was subsequently prepared by phosphoric acid etching. This catalyst effectively induced microwave activation of peroxymonosulfate (PMS), and ciprofloxacin (CIP) was efficiently degraded with a degradation rate reaching 95.48 % within 14 min. Characterization results revealed that the MOFs template method and phosphoric acid etching increased specific surface area (from 25.91 m 2 /g to 142.41 m 2 /g) of catalyst and improved its pore size distribution. Phosphoric acid etching successfully introduced phosphorus functional groups and promoted the formation of more oxygen vacancies, thereby significantly enhancing the catalytic activity of the catalyst. The conversion of free radicals and the transformation of free radicals to non-free radicals were demonstrated. Additionally, the catalyst exhibited higher electron transfer efficiency. The catalytic reaction was primarily driven by O 2 – and 1 O 2 , with OH, SO 4 − , and e - playing auxiliary roles. Furthermore, the degradation pathway and toxicity of CIP were also evaluated. This work provides a new perspective for improving the catalytic degradation activity of antibiotics by perovskite catalysts.
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