MICROCHEMICAL JOURNAL
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2026
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IF 5.2
Xiaomeng Jin,Xianliang Liu,Ming Cao,Mingren Liu,Hanyu Li,Zhen Xu,Yuying Yang,Lei Chen,Hui Liu,Qing Liu
A “Polar Piezoelectric Potential Energy Driving Interfacial Charge” strategy is proposed to address the low carrier mobility in heterojunction-based PEC sensors. • Light-induced strain activates the piezoelectric polarization field of BaTiO 3 interlayer, providing a sustained Coulombic driving force for carrier separation. • BaTiO 3 interlayer regulates the energy band alignment and enhances the polarization effect in the p-n heterojunction. • The sensor achieves OTA detection with a wide linear range (1.00 × 10 −5 –10.0 ng/mL) and a low detection limit (3.93 fg/mL). Heterojunction photoelectrodes can effectively enhance the performance of photoelectrochemical (PEC) sensors. Nevertheless, addressing the structural limitations of heterojunction photoelectrodes to achieve fast and stable carrier migration while suppressing electron-hole pair (EHP) recombination remains a huge challenge. In this paper, we propose a “polar piezoelectric potential energy driving interface charge” strategy to design a highly sensitive PEC sensing platform for sensitively detection of ochratoxin A (OTA). This strategy is defined as the use of piezoelectric polarization-induced internal electric field to provide a sustained Coulombic driving force for interfacial charge carrier migration. The platform is constructed by integrating BaTiO₃-induced polar p-n heterojunction CoCdS/Ag₂O as a photoanode. Due to the inherent piezoelectric properties of BaTiO 3 , it can serve as an embedding layer of p-n heterojunction. Under the built-in potential of the p-n heterojunction, the two sides of BaTiO 3 generate a piezoelectric polarization charges, establishing a strong piezoelectric polarization field. This field induces the rearrangement of electrons and holes, providing a sustained and stable Coulombic driving force for the migration of charge carriers, which facilitates the rapid separation and transfer of photogenerated charge carriers. Based on this strategy, the PEC sensor exhibits a detection range of 1.00 × 10 −5 to 10.0 ng/mL as well as a minimum detection limit of 3.93 × 10 −6 ng/mL for OTA. It demonstrates excellent stability, anti-interference and reproducibility, with feasibility for real sample detection. This platform offers new opportunity for sensitive detection of trace mycotoxins in food with piezoelectric effect modulated PEC sensors. Download: Download high-res image (129KB) Download: Download full-size image
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ChemistrySelect
·
2025
·Vol. 10
·期 37
·e03497
·
IF 2
Zilin Yang,Shuting Wang,Hongbo Jiang,Weixing Zhao,Meijuan Tian,Jingman Pang
A novel BaTiO 3 /Zn 2 TiO 4 /ZnO heterojunction composite was successfully synthesized via the molten salt method, and its piezoelectric catalytic performance for pollution degradation was evaluated with methyl orange (MO) as the target pollutant. After calcination at 900 °C for 3 h, the optimal sample demonstrated exceptional catalytic activity, with a MO degradation rate of up to 98.78%. Notably, even after four consecutive cycles, this catalyst maintained a degradation efficiency exceeding 85%, indicating favorable stability and reusability. Radical trapping experiments were carried out to explore the degradation mechanism, showing that silver nitrate (AgNO 3 ) significantly enhanced the degradation efficiency over time, while disodium ethylenediaminetetraacetate (EDTA-2Na), methanol (CH 3 OH), and tert-butyl alcohol (TBA) inhibited the reaction to varying degrees. The superior catalytic activity of the BaTiO 3 /Zn 2 TiO 4 /ZnO system is mainly attributed to the strong synergistic effect between its piezoelectric catalytic performance and peroxymonosulfate (PMS). During the piezoelectric activation of PMS for MO degradation, hydroxyl radicals (·OH), sulfate radicals (SO 4 −·), and superoxide anions (O 2 −·) serve as the main reactive oxygen species, playing a dominant role in the reaction. These findings further elucidate the piezoelectric catalytic mechanism of the BaTiO 3 /Zn 2 TiO 4 /ZnO system in MO degradation. Graphical The BaTiO 3 /Zn 2 TiO 4 /ZnO catalyst, under ultrasonic irradiation, synergistically activates peroxymonosulfate (PMS) and ambient oxygen. This process yields a suite of reactive species, including sulfate (SO 4 · − ) and hydroxyl (·OH) radicals, as well as superoxide anion radicals (·O 2 − ), which collectively degrade methyl orange (MO), resulting in the complete mineralization to CO 2 and H 2 O.
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Journal of Water Process Engineering
·
2023
·
IF 7
Yuhe Zhou,Guocan Zheng,Zuohua Liu,Renlong Liu,Changyuan Tao
The leachate of waste phosphogypsum (PG) contains substantial amounts of phosphate, sulfate, and fluoride, which poses an immense threat to the safety of the aquatic ecosystem . In this study, a multi-stage precipitation approach is proposed to treat PG leachates using hybrid alkaline reagents including barium hydroxide (Ba(OH) 2 ) and quicklime (CaO). To avoid potential environmental impacts, hazardous environmental contaminants are removed from the PG leachates by adding alkaline reagents in a specific order. The multi-stage precipitation approach achieves nearly 100% removal efficiencies for phosphate, fluoride, and metal ions as well as satisfactory removal efficiencies for sulfate and ammonia nitrogen (93.6% and 94.8% respectively). The compositions of generated mineral precipitates are comprehensively investigated by analytical techniques including X-ray diffraction (XRD), transmission electron microscope (TEM), etc. The main precipitated mineral phases are barite (BaSO 4 ), brushite (CaHPO 4 ·2H 2 O), and hydroxyapatite (Ca 5 (PO 4 ) 3 OH). This is further proven by the geochemical modeling using Visual MINTEQ, in which the precipitation of mineral phases is calculated. Furthermore, a straightforward economic analysis indicates the proposed method has a lower cost of the use of alkaline reagents. Overall, this study establishes an effective and eco-friendly approach for the treatment of waste PG leachates to remove hazardous environmental contaminants and recover valuable precipitates.
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Materials Today Physics
·
2023
·
IF 11.5
Zhenfei Yang,Xinnian Xia,Ming Fang,Longlu wang,Shuaijun Pan,Yang guo
Efficient spatial separation of photogenerated carriers is the key to achieving photocatalytic oxidation reduction synergistic reactions, and the built-in electric field generated by piezoelectric effects can provide a strong driving force for charge separation. A novel Pt/ZnIn 2 S 4 /BaTiO 3 (PBZIS) piezo-photocatalyst with spatial charge separation was successfully constructed through two-step hydrothermal and photodeposition methods. Due to the special 1D/2D core/shell structure, the inner BaTiO 3 can served as hole-storage layer, while the outer Pt nanoparticles can acted as electron capture center, thus greatly improving the separation of photo generated charge carriers and achieving spatial separation of redox sites. Under the ultrasound, the polarized electric field induced by the piezoelectric effect can further improve the extraction rate of photo generated holes by BaTiO 3 and accelerate surface catalytic reactions . Therefore, the synergism of electron/hole co-extraction and piezoelectric effect construct a directional transmission channel and target active sites for photogenerated electron-holes over PBZIS heterojunctions , reuslting in the highest performance for photocatalytic cooperative H 2 evolution (1335.3 μmol g −1 h −1 ) and HMF oxidation (1070.8 μmol g −1 h −1 ). This work would inspire the development of high-performance piezo-photocatalysts for the cooperative biomass oxidation coupling with high efficient hydrogen evolution .
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2022
·
IF 9.965
Ge Yang,Jinyan Xiong,Mengjie Lu,Weiming Wang,Wei Li,Zhipan Wen,Shaozhong Li,Weijie Li,Rong Chen,Gang Cheng
Photocatalytic CO 2 reduction into valuable fuel and chemical production has been regarded as a prospective strategy for tackling with the issues of the increasing of greenhouse gases and shortage of sustainable energy. A composite photocatalysis system employing a semiconductor enriched with oxygen vacancy and coupled with metallic cocatalyst can facilitate charge separation and transfer electrons . In this work, mesoporous TiO 2 and titanium-based perovskite oxides (BaTiO 3 and SrTiO 3 ) nanoparticle assembly incorporated with abundant oxygen vacancy and copper particles have been successfully synthesized for CO 2 photoreduction . As an example, the TiO 2 decorated with different amounts of Cu particles has an impact on photocatalytic CO 2 reduction into CH 4 and CO. Particularly, the optimal TiO 2 /Cu-0.1 exhibits nearly 13.5 times higher CH 4 yield (22.27 μmol g −1 h −1 ) than that of pristine TiO 2 (1.65 μmol g −1 h −1 ). The as-obtained BaTiO 3 /Cu-0.1 and SrTiO 3 /Cu-0.1 also show enhanced CH 4 yields towards photocatalytic CO 2 reduction compared with pristine ones. Based on the temperature programmed desorption (TPD) and photo/electrochemical measurements, the co-embedding of Cu particles and abundant oxygen vacancy into the titanium-based oxides could promote CO 2 adsorption capacity as well as separation and transfer of photoinduced electron-hole pairs, and finally result in efficient CO 2 photoreduction upon the TiO 2 /Cu, SrTiO 3 /Cu, and BaTiO 3 /Cu composites.
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PubMed
高影响因子
COMPOSITES PART B-ENGINEERING
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2021
·
IF 9.078
Qi Zhao,Xudong Li,Zishang Tian,Hui Ma,Xianglin Hou,Yingxiong Wang,Yuqi Wang
Carbon fiber reinforced bismaleimide resin (CF/BMI) composites are widely used in aerospace field due to their high thermal stability, chemical resistance and excellent mechanical properties . With the large-scale application of CF/BMI composites, it is inevitable to produce a lot of solid wastes, which have a serious impact on the environment, so people have to recycle waste CF/BMI composites. In view of the physical and chemical properties of BMI resin, we developed a green and friendly chemical recovery method of CF/BMI composites by selectively breaking imide bonds for controlled chemical degradation of BMI resin. In 5 wt% NaOH/H 2 O reaction system, the controlled chemical degradation of CF/BMI composites can be realized by selective cleavage of imide bonds, and the 4,4′-Diaminodiphenyl methane (DDM) and 2,2′,2″,2‴-((methylenebis(4,1-phenylene))bis(azanetriyl))tetrasuccinic acid (MBTA) can be recovered, and the carbon fiber (CF) can be recycled at the same time. Under the optimal reaction conditions, the yields of DDM and MBTA reached 6.7 wt% and 27.9 wt% at 180 °C for 8 h, respectively. Meanwhile, CF in CF/BMI composites can be completely recovered, and the tensile strength of recovered carbon fiber (rCF) is about 97.6% of that of virgin carbon fiber (vCF). This work provides a very promising strategy for the recycling of CF/BMI composites. The high value-added CF and chemicals (DDM and MBTA) can be recovered by controlled degradation of CF/BMI composites via selective cleavage of imide bonds.
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HIGH PERFORMANCE POLYMERS
·
2021
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IF 2.161
Guangyu Duan,Fengying Hu,Zhongyuan Xin,Changlong Chi,Xiang Yu
This study reports that a novel high-temperature poly (m-phenyleneisophthalamide) (PMIA) composite with enhanced dielectric constant and thermal conductivity was prepared by filling with BaTiO3 nanowires–carbon nanotubes (BTCNs) fillers. Due to effective functionalization of BaTiO3 nanowires (BTNWs) and multi-wall carbon nanotubes (MWCNTs), the fabricated BTCNs fillers were homogeneously dispersed in PMIA matrix. The consequence displays that the dielectric constant of PMIA composite with 15 wt % BTNWs fillers increases to 27.6 at 103 Hz, which is about nine times higher than that of pure PMIA. Moreover, owing to the high thermal conductivity of MWCNTs, the thermal conductivity of PMIA with 15 wt% BTNWs fillers increases to 1.01 W/(mK). The enhanced thermal conductivity is beneficial for BTCNs/PMIA composite to dissipate the generated heat by dielectric loss. Considering these merits, this research would provide new methods and ideas for preparation of high-temperature dielectric polymer composites and reducing the internal thermal effect.
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SUPERLATTICES AND MICROSTRUCTURES
·
2019
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IF 2.385
Yong Cui,Junye Tong,Hongmei Shao,Gang Wang,Daocheng Pan
Novel semiconductor Cu 2 BaSn(S,Se) 4 thin film with orthorhombic structure has been successfully fabricated via solution process. XRD、EDS、XPS and SEM were used to investigate the structure、elemental composition、valence states and morphology of the Cu 2 BaSn(S,Se) 4 thin film . Different selenization temperatures that affected CBTSSe thin film quality were investigated. The photoresponse property of Cu 2 BaSn(S,Se) 4 thin film indicated that it had potential application in low-cost thin film solar cells. The solution process to fabricate Cu 2 BaSn(S,Se) 4 /CdS heterojunction thin film solar cells demonstrated that Cu 2 BaSn(S,Se) 4 thin film could be applied as absorb layer in the thin film solar cells.
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高影响因子
JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY
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2019
·Vol. 34
·期 11
·2229-2235
·
IF 3.646
Lei Tang,Wenting Bu,Xuemei Liu,Sheng Hu
The accurate determination of ultra-trace amounts of 99Tc is still a challenge due to its long half-life and the lack of a commercially available isotopic tracer. Negative thermal ionization mass spectrometry (N-TIMS) has been proven to be a powerful method for the analysis of isotopes with relatively high ionization potentials. In this work, we established a novel method based on N-TIMS for the measurement of Tc isotopes. By using Pt filaments and Ba(OH)2 as the ionization activator, the ionization efficiency of Tc was significantly improved to be more than 10%. The oxygen isotopic compositions were measured with a 99Tc standard solution and the obtained coefficients can be applied directly for the correction of interferences from oxygen isotopes. We used this method for the measurement of the isotopic abundance and concentration of the 97Tc tracer produced in our laboratory. Due to the high ionization efficiency of this method and the calibration of the 97Tc tracer, ultra-trace determination of 99Tc in radioactive wastes and environmental samples is now possible.
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高影响因子
Catalysis Science & Technology
·
2019
·Vol. 9
·期 24
·6863-6874
·
IF 5.726
Enzhu Lin,Jiang Wu,Ni Qin,Baowei Yuan,Zihan Kang,Dinghua Bao
Advanced oxidation processes including piezocatalysis and photocatalysis are considered as promising strategies for environmental remediation. More efforts have been made to clarify the factors that can improve the catalytic efficiency in piezocatalysis. Diphasic Ba1−xCaxTiO3 piezoelectric materials near a solubility limit have been found to exhibit potential for piezoelectric performance far beyond their corresponding single-phasic materials. It is interesting to explore how phase structures (single phase and diphase) will influence the catalytic performance of nanoscale piezoelectric materials. In this study, Ba1−xCaxTiO3 nanowires were used as representative materials to explore the influence of phase structures on catalytic performance. It is found that when x = 0.2 (near the solubility limit), the Ba1−xCaxTiO3 nanowires exhibit better piezocatalytic and photocatalytic performance. This can be ascribed to higher spontaneous polarization induced by the interaction of a ferroelectric tetragonal Ba-rich phase and a normal dielectric orthorhombic Ca-rich phase and band alignment of Ba-rich and Ca-rich phases, which can both effectively enhance charge carrier separation rates. In addition, with the simultaneous assistance of ultrasonic vibration and ultra-violet light, there is a coupling catalytic effect of Ba1−xCaxTiO3 nanowires, with a rate constant kobs of 71% higher than the simple sum-up of the rate constants of piezocatalytic and photocatalytic reactions. The increasing piezo-/photocatalytic degradation efficiency is mainly attributed to increased free charge carrier concentrations (thermally-excited and photo-induced charge carriers) and a strong piezoelectric field induced by the piezoelectric effect, which is beneficial for the separation of free charge carriers. We believe that this work provides mechanistic insights into how phase structures affect catalytic performance and a novel route to furnish environmentally-friendly catalysts that can efficiently utilize multiple energy sources.
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CATALYSIS COMMUNICATIONS
·
2016
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IF 3.389
Xiaomin Xiang,Bin Zhang,Guoqiang Ding,Jinglei Cui,Hongyan Zheng,Yulei Zhu
The oxidation of furfural in H 2 O 2 and H 2 O 2 –Mg(OH) 2 system were systematically investigated and a rational explanation for the reaction mechanism was proposed. 2-formyloxyfuran, from selective oxidation of HC O group in furfural, was a crucial intermediate. The addition of Mg(OH) 2 suppressed the oxidation of furan ring of furfural and enhanced selectivities of 2(5H)-furanone (44.8%) and succinic acid (38.0%). FT-IR, Gaussian calculation and experimental results indicated that the process of furfural oxidation with H 2 O 2 is homogeneous, and the synergy between dissolved Mg 2 + cations and OH − ions facilitates the HOO − attacking the carbon atom of HC O other than the C C bound of furan ring.
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JOURNAL OF MOLECULAR STRUCTURE
·
2025
·
IF 4.7
Jianing Yan,Shiwen Zhang,Lulu Wang,Fan Zhang,Yang Zhang,Jilin Wang
As the core component of anion exchange membrane fuel cells (AEMFCs), anion exchange membranes (AEMs) have long faced issues such as low conductivity and poor alkaline resistance. Therefore, the selection of appropriate polymer backbones and cationic functional groups is crucial for enhancing the conductivity and alkaline stability of AEMs. In this study, rigid poly(crown ether) (B-C) and flexible quaternary ammonium Poly(vinyl alcohol) (QPVA) were interconnected using glutaraldehyde as the crosslinker to fabricate high-performance AEMs (QPVA 1-X% -(B-C) X% ). Flexible QPVA, by virtue of its hydrophilic nature, exhibits remarkable membrane-forming capabilities and effectively facilitates OH⁻ ion conduction. Rigid B-C plays a crucial role in augmenting both the electrical conductivity and alkaline stability of the membranes. Moreover, the cross-linked networks serve to enhance the compatibility between QPVA and B-C, thereby restricting swelling phenomena and further bolstering the alkaline stability of the composite materials. The results indicate that the conductivity and alkaline stability of QPVA 1-X% -(B-C) X% AEMs can be effectively optimized by precisely adjusting the amount of B-C added. Among them, the membrane with 30 wt% B-C content exhibits the highest OH⁻ conductivity, reaching 95.31 mS·cm -1 at 80 °C. Notably, it also demonstrates limited swelling, with a swelling ratio of 60.06%, and excellent alkaline stability. Specifically, after being immersed in 2 mol·L -1 KOH solution at 30 °C for 168 h, the OH⁻ conductivity of the QPVA 70% -(B-C) 30% AEM remains at 83.80% of its original value. Moreover, the membranes demonstrate outstanding mechanical properties, registering a tensile strength of 27.54 MPa and an elongation at break of 156.25%. A single cell incorporating the QPVA 70% -(B-C) 30% AEM attains a peak power density of 469 mW·cm -2 at 80 °C. These results indicate that the membranes engineered through the rigid-flexible crosslinking strategy hold significant application potential in AEMFCs.
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