CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Wangman Yin,Xinman Tu,Xinding Lv,Li Zhang,Tingting Li,Xiaojun Wang,Jianping Zou
The photocatalytic fuel cell (PFC) can treat the increasingly severe pollution from flotation wastewater in the mining industry by simultaneously converting the chemical energy of pollutants into electricity. The inherent thermodynamic and kinetic differences in degradation pathways are crucial for governing pollutant mineralization and electricity generation in the PFC system. However, achieving simultaneous contaminant elimination and maximum energy recovery through rational pathway modulation remains challenging. Herein, oxygen vacancy-enriched heterostructured BiPO 4 /Bi 2 MoO 6 photoanode by B/P co-doping, denoted as BPO/BP-BMO, is constructed via a one-step acid-mediated solvothermal method. The in-situ heterojunction and oxygen vacancies induced by heteroatom doping effectively modulate electronic/band structures, optimize interfacial charge transfer, and enhance electron-hole pair separation efficiency. The optimal BPO/BP-BMO photoanode exhibits enhanced production of singlet oxygen ( 1 O 2 ) under visible-light irradiation, which is critical for regulating the degradation pathways of sodium isopropyl xanthate (SIPX). Experimental and theoretical studies have shown that 1 O 2 preferentially targets the -O-CSS- bond in SIPX, leading to the rapid formation of isopropanol, a compound that mineralizes quickly, while minimizing the buildup of unreactive intermediates such as ROCS₂O − . The isopropanol-oriented degradation pathway endows the BPO/BP-BMO-PFC system with 92 % degradation efficiency within 90 min and a power density of 9.7 μW cm −2 , with the latter being 1.8 times that of the Bi 2 MoO 6 -PFC system. This study demonstrates an advanced photoanode, progressing from rational defect/heterojunction design to degradation pathways regulation, thereby establishing a more effective PFC system for sustainable wastewater-to-energy conversion processes.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2025
·Vol. 142
·期 43
·e57676
·
IF 2.8
Li Dang,Jia Liu,Xinyi Bao,Yongkui Zheng,Zhihui Lv
To enhance the interfacial compatibility and fire safety of polyvinyl chloride (PVC)/molybdenum trioxide-doped magnesium hydroxide (MO@MH) composites, three chain-length-varied silicon-phosphorus polyether modifiers (ABP 200 , ABP 1000 , and ABP 2000 ) were synthesized and characterized. Magnesium-molybdenum-silicon-phosphorus multicomponent flame retardants (MO@MHABP) were subsequently prepared via wet modification. The chain-length-dependent mechanical behavior of PVC composites was systematically evaluated through combined experimental characterization and molecular dynamics (MD) simulations. Static mechanical tests revealed that yield strength, tensile strength, and impact strength of PVC/MO@MH composite were all improved by inducing ABP modifiers, with the shortest-chain ABP 200 showing optimal enhancement. Dynamic mechanical analysis revealed increased storage/loss modulus and glass transition temperatures for PVC/MO@MHABP, indicating restricted chain mobility. Interface interaction models (Turcsányi equation and Kubát model) combined with MD simulations demonstrated that the shortest-chain modifier (ABP 200 ) enhanced interfacial adhesion through the strongest Cl–NH interactions (supported by the most negative Δ E values). Cone calorimetry tests indicated that ABP modification decreased the heat release rate and total heat release of PVC/MO@MH composites but did not significantly improve smoke suppression. This study provides valuable insights into interfacial regulation and performance optimization in PVC composites.
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ACS Applied Materials & Interfaces
·
2019
·
IF 8.456
Yanping Song,Bin Yao,Yongfeng Li,Zhanhui Ding,Huanhuan Sun,Zhenzhong Zhang,Ligong Zhang,Haifeng Zhao
Cu2ZnSn(S,Se)4 (CZTSSe) thin-film solar cells have been encountering a bottleneck period since the champion power conversion efficiency (PCE) of 12.7% was achieved by Kim et al. in 2014. One of the critical factors that impede its further development is the relatively low open-circuit voltage (VOC) caused by serious interface carrier recombination. In this regard, back surface field (BSF) employment is a feasible strategy to address the VOC issue of CZTSSe solar cells to some extent. Here, we demonstrated a self-organized BSF introduced by prompting interfacial MoSe2 layer transition from inherent n-type to desirable p-type with Nb doping (p-MoSe2:Nb). The BSF application can significantly reduce the carrier recombination at the back electrode interface (BEI) and lower down the back contact barrier height. The PCE of the corresponding cell was improved from 4.72 to 7.15% because of the enhancement of VOC and fill factor, primarily stemming from the doubling aspects of increased shunt resistance (RSh), decreased series resistance (RS), and alleviative recombination velocity of the BEI induced by the BSF. Our results suggest that introducing a BSF fulfilled with p-MoSe2:Nb is a facile and promising route to improve the performance of CZTSSe thin-film solar cells.
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高影响因子
ACS Sustainable Chemistry & Engineering
·
2026
·
IF 7.6
Mingzhu Guo,Yuewen Shao,Chengsen Song,Hao Liu,Fei He,Lijun Zhang,Shu Zhang,Tao Wei,Xun Hu
Upcycling polyethylene terephthalate (PET) plastic into high-value chemicals like p-xylene is challenging, due to the difficulty for achieving selective depolymerization of PET and deoxygenation of reaction intermediates. Herein, a tandem alcoholysis-hydrogenation/hydrogenolysis strategy for converting PET to p-xylene over Cu-based catalysts using n-butanol as both solvent and reactant at 205 °C was conducted using Mg-modulated Cu-based catalysts derived from layered double hydroxides. By precisely tuning the Mg/Al molar ratio, the multidimensional synergistic roles of Mg in enhancing the catalyst performance were unraveled, which serves as the core of heterogeneous PET depolymerization. Specifically, Mg reinforces metal–support interactions, confining Cu nanoparticles to an average size of 4.8 nm, which is far smaller than the 14.1 nm observed in Mg-free Cu1.0Al2.0, maximizing accessible active sites and accelerating the rate-determining step of PET butanolysis. Mg also induces pore coarsening to form a hierarchical mesoporous architecture, eliminating steric hindrance for the rapid diffusion of bulky PET oligomers. Moreover, Mg enriches surface basic sites (critical for ester bond cleavage, as confirmed by acid–base titration) and induces oxygen vacancies (promoting carbonyl adsorption and deoxygenation via in situ FT-IR). The optimized catalyst exhibits a low apparent activation energy (49.6 kJ/mol) and high p-xylene yield (99%), with exceptional recyclability by suppressing Cu sintering.
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高影响因子
INORGANIC CHEMISTRY
·
2026
·
IF 4.6
Lin Wei,Yang Zhibin,Tao Jin-Gang-Lu,Zhao Qianqian,Liu Fuyu,Li Wanshan,Feng Renfei,Zhang Yu,Fu Xian-Zhu,Luo Jing-Li,Zhao Bin
Developing efficient and durable electrocatalysts for
alkaline
seawater hydrogen evolution remains challenging because of sluggish
water dissociation kinetics. Herein, we report a defect-rich d-p orbital-hybridized
Os/o-CNTs electrocatalyst ( dph -Os def /o-CNTs)
prepared by rapid room-temperature NaBH 4 reduction. The
partially oxidized CNT support anchors defective Os nanoclusters and
induces C–Os/C–O–Os electronic coupling, generating
electron-deficient Os sites with modulated 5d electronic structures.
In alkaline simulated seawater (1 M NaOH + 3.5 wt % NaCl), dph -Os def /o-CNTs requires only 91 mV to reach
100 mA cm –2 and exhibits a Tafel slope of 19 mV
dec –1 , with stable operation over 350 h and 10,000
CV cycles. In situ Raman spectroscopy, AIMD simulations, and DFT calculations
reveal that Os vacancies reorganize interfacial water into an ordered
H-bond network, promote O-down water adsorption, and reduce the water
dissociation barrier from 1.12 to 0.56 eV. Moreover, an Al | OH – | H 2 primary cell using dph -Os def /o-CNTs as the cathode delivers 1.41 V and 10.92
mW cm –2 , enabling simultaneous hydrogen generation
and electricity output.
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高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2026
·
IF 5.4
Wenshuai Si,Yi Shao,Lijuan Chang,Wei Song,Shouying Wang,Zhijie Zhang,Chunxia Yao
A 2D/2D mesoporous Co 3 O 4 /g-C 3 N 4 nanocomposite with triple synergy was constructed. • The Co 3 O 4 /g-C 3 N 4 nanocomposite shows excellent antibiotic removal efficiency. • The photothermal effect accelerates TC degradation by elevating reaction temperature. • This work offers insights into the design of multimodal synergistic photocatalysts for environmental remediation. Developing potent photocatalysts is of great significance for both preventing and remediating antibiotic-polluted environments. In this work, a 2D/2D mesoporous Co 3 O 4 /g-C 3 N 4 (Co 3 O 4 /CN) nanocomposite is constructed and reported as a multimodal antibiotic-degrading photocatalyst featuring triple-function synergy: (1) The mesoporous structure of Co 3 O 4 increases the nanocomposite's surface area, enhancing antibiotic adsorption; (2) Co 3 O 4 /CN exhibits excellent full-spectrum light absorption and remarkable photothermal effect, elevating the temperature of the reaction system to facilitate photodegradation reaction; (3) The p-n heterojunction formed between Co 3 O 4 and g-C 3 N 4 promotes efficient separation of photogenerated electrons and holes. Owing to the combined action of its mesoporous structure, photothermal effect, and efficient charge separation, the Co 3 O 4 /CN nanocomposite demonstrates outstanding photocatalytic performance, with tetracycline (TC) being completely degraded (100% degradation rate) within 100 min. This research offers valuable references for the synthesis of multimodal synergistic photocatalysts applied in environmental remediation. Download: Download high-res image (275KB) Download: Download full-size image This work successfully constructed a 2D/2D Co₃O₄/g-C₃N₄ nanocomposite with triple-function synergy of mesoporous structure, photothermal effect, and p-n heterojunction, which provides valuable references for the design of multimodal synergistic photocatalysts in environmental remediation.
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高影响因子
ACS Sustainable Chemistry & Engineering
·
2026
·
IF 7.6
Chunhuan Zhang,Jiale Xu,Mu Liu,Haoyu Wang,Jiachen Ma,Riming Hu,Fahao Ma,Zhaoke Zheng,Xuchuan Jiang
Nickel-based materials exhibit great potential for electrocatalytic upgrading of poly(ethylene terephthalate) (PET)-derived ethylene glycol (EG) and biomass-derived glycerol (GLY). However, the high energy barrier for generating active species (Ni3+OOH) and their limited ability to activate EG and GLY significantly impede the efficient conversion of EG and GLY. Herein, CuO@Ni(OH)2–x core–shell nanowires with abundant oxygen vacancies and p–n junction interfaces were successfully designed, which exhibited high activity and selectivity for EG/GLY-to-formic acid at industrial-grade current densities. Particularly, for EG electrooxidation, CuO@Ni(OH)2–x offered 300 mA cm–2 at an ultralow potential of 1.58 V vs RHE with ∼99% Faradaic efficiency for HCOOH production. Experimental and theoretical analysis revealed that (1) the oxygen vacancies and p–n junction synergistically mediate the atomic coordination and electronic structure of Ni2+–OH, which facilitates OH– adsorption and decreases the energy barrier of O–H bond cleavage, and hence accelerates the formation of Ni3+OOH; (2) the high exposure of Ni3+ enabled by oxygen vacancies enhances the adsorption of EG/GLY and the cleavage of the C–C bond, which boosts the kinetics of EG/GLY-to-formic acid. As a proof of concept, a solar-driven reactor equipped with a “one-click” operating system was designed for the upcycling of real-world PET bottles, achieving a Faradaic efficiency of 86.7% for HCOOH. This work underlines the synergistic regulation of defects and p–n junctions in nickel-based electrocatalysts for efficient PET and biomass-derived alcohol electrooxidation.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2022
·
IF 16.744
Zifang Peng,Wenfen Zhang,Dan Yin,Xu Zhang,Shuo Liu,Wuduo Zhao,Jian Mao,Yanhao Zhang,Jianping Xie
A novel magnetic single-layer nano-MXene (SNM@Fe 3 O 4 ) was prepared for the first time with small size, high surface area, abundant active sites and excellent energy absorption/transfer capability. The combined experimental and theoretical investigation revealed SNM@Fe 3 O 4 could be served as a highly effective adsorbent for enrichment and a new surface-assisted laser desorption/ionization-time of flight-mass spectrometry (SALDI-TOF-MS) matrix for rapid analysis of p -Phenylenediamine (PPD) antioxidants, a kind of emerging environmental contaminants, in actual water samples from North and South China. The SNM@Fe 3 O 4 -based SALDI-TOF-MS approach featured free matrix interference, acceptable linearity (R 2 ≥ 0.97), high sensitivity (LOD at ng mL −1 level) and qualified precision (RSD ≤ 8.46 %) for the four PPDs’ detection. The corresponding determined pollution levels also revealed the widespread occurrence of PPDs in Chinese water system. Compared to previous works, SNM@Fe 3 O 4 -based method achieved reproducible and more rapid analysis of PPDs in water, demonstrating a considerable potential of our self-synthesized nanomaterial for sensitive analysis of low-concentration organic small-molecule compounds in complicated sample matrix.
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Catalysts
·
2021
·Vol. 11
·期 3
·394
·
IF 4.146
Baohe Wang,Honggang Dong,Liang Lu,Hongxia Liu,Zhaobang Zhang,Jing Zhu
A series of KxH1.1-xCu0.2Cs1(NH4)1.5PVMo11O40(KxCuCsNH4PVA) catalysts with differentxvalues were synthesized to catalyze the selective oxidation of methacrolein (MAL) to methacrylic acid (MAA). The effects of potassium (K) ions on both the structure and catalytic activity were studied in detail. The optimum K0.6CuCsNH4PVA exhibited a large surface area, more acid sites, and abundant active species (V4+/VO2+) in the secondary structure of the Keggin structure, consequently offering good catalytic performance. Furthermore, K ions increased the MAA selectivity at the expense of carbon monoxide and carbon dioxide (together defined as COX). Additionally, several process parameters for MAL oxidation were evaluated in the processing experiments. The effects of aldehyde impurities (formaldehyde and propanal) on the catalytic performance were investigated. Possible detrimental effects (catalyst poisoning and structural damage) of aldehyde impurities were excluded. A light decrease in MAL conversion could be attributed to the competitive adsorption of aldehyde impurities and MAL on the catalyst. Hopefully, this work contributes to the design of stable and feasible catalysts for the industrial production of MAA.Keywords:potassium;methacrolein;formaldehyde;propanal;selective oxidation;methacrylic acid;catalytic performance
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高影响因子
Nanoscale Advances
·
2020
·Vol. 2
·期 4
·1685-1693
·
IF 0
Wenxiu Luo,Xue Zhao,Wei Cheng,Yun Zhang,Yi Wang,Guangyin Fan
Metal nanoparticles (NPs) deposited on nitrogen (N)- and/or phosphorus (P)-doped porous carbon have been investigated as efficient catalysts for hydrolysis of ammonia borane (AB). However, the one-pot synthesis of N,P co-doped porous carbon using low-cost and readily available sources is still a tremendous challenge. Herein, a novel one-pot methodology is developed to fabricate N and P co-doped porous carbon (ATP-C) using non-precious and easily available adenosine triphosphate (ATP). The process of N and P doping does not need additional N or P sources in the material. Moreover, the entire process did not require chemical activation agents, making it more practical for large-scale applications. The resulting ATP-C supported Rh NPs (Rh/ATP-C) exhibit excellent performance for the catalytic hydrolysis of ammonia borane toward hydrogen generation, with a total turnover frequency (TOF) value of 566 mol H2 min−1 (mol Rh)−1 and activation energy (Ea) of 26.3 kJ mol−1. The catalytic system has shown an outstanding catalytic cycle life during the recycling tests. This work provides a novel method for the production of high performance carbon material supported metal NP catalysts for practical dehydrogenation applications.
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PubMed
COMPOSITES SCIENCE AND TECHNOLOGY
·
2020
·
IF 7.094
Yan Yang,Chengxiao Sun,Hua Deng,Qiang Fu
Dielectric capacitors with high dielectric constant and energy density are of great importance for electronic devices. Barium titanate(BaTiO 3 ) have been widely explored for polymer-based dielectric composites owning to its ultrahigh dielectric constant and commercial availability. However, due to the large difference of dielectric constant between BaTiO 3 and polymer matrix , the interface becomes fragile under electric field, which is not conducive for the improvement in breakdown strength and energy storage density . Herein, a flower like barium titanate/nickel hydroxide(BTO/Ni(OH) 2 ) core-shell structured filler has been fabricated to provide a novel approach to modify the interface between BTO and P(VDF-HFP) matrix for dielectric polymer composites . Ni(OH) 2 nanoflakes have grown in-situ on the surface of hydroxylated BaTiO 3 particles to form the flower like core-shell assemblies via hydrothermal reaction . Then, these synthetic BTO/Ni(OH) 2 particles with specific flower-like core-shell structure can be uniformly dispersed in P(VDF-HFP) without any additional surface modification due to their surface –OH groups. Meanwhile, Ni(OH) 2 shell triggered beta phase of P(VDF-HFP) near core-shell filler based on the interfacial interaction between Ni(OH) 2 and P(VDF-HFP). Thus, the intensity of the local electric field can be gradually reduced due to the formation of a dielectric constant gradient. Besides, these Ni(OH) 2 nanoflakes shell are able to cut down the local electric field and prevent the growth of electrical trees on the surface of BaTiO 3 during breakdown process. When the composite filler content is 10 wt%, the dielectric constant and breakdown strength increases to 14.8 and 330 kV/mm from 11 to 260 kV/mm, respectively. And the calculated energy density is 7.13 J/cm 3 , which is 1.5 times that of 10 wt% BTO/P(VDF-HFP) composite film . This study provides a novel shell material Ni(OH) 2 for the preparation of BTO core-shell structure filler, which has good compatibility with polymer substrates .
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高影响因子
NEW JOURNAL OF CHEMISTRY
·
2014
·Vol. 38
·期 10
·4938-4945
·
IF 3.159
Wei Shi,Qiang Cheng,Lian Duan,Yang Ding,Zhongduo Xiong,Xiaoxia Li,Aihua Xu
Dioxygen from air is the cleanest and the most abundant oxidative agent; it is of great significance to activate dioxygen to reactive oxygen species for environmental pollutant transformation and degradation. In this work, the simple cobalt(II) ion was found to exhibit high efficiency for p-aminophenol oxidation in bicarbonate aqueous solution with dioxygen as the oxidant at room temperature; simultaneously, the azo dye, Acid Orange 7, can be decolorized by the system. The formed reactive species was carefully studied by electron spin resonance and spin-trapping technologies and radical scavenging measurements. The metal-bound hydroxyl radical, which originated from a Fenton-like reaction between the Co2+–HCO3− complex and the intermediate of H2O2, was suggested as the main reactive species. This study can provide new insight into the mechanism of the molecular oxygen activation by simple metal complexes and their application to the removal or transformation of pollutants under mild reaction conditions.
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高影响因子
危险品化学品经营许可证（带存储）