JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
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2020
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IF 3.306
Ting-ting Cao,Tie-fu Xu,Feng-xia Deng,Wei-wei Qiao,Chong-wei Cui
Phenolic pollutants (PPs) are regarded as hazardous pollutants, posing severe threats to humans. In this study, a vacuum ultraviolet (VUV) lamp was used to decay PPs with different functional groups, including phenol, paradioxybenzene (PDB), and p-nitrophenol (PNP). Results showed the removal rate for phenol, PDB, and PNP reached 99.78 %, 97.78 %, and 80.73 % within 60 min. Density functional theory (DFT) involving in quantum chemical descriptors (QCD), frontier molecular orbitals (FMO), thermochemical properties, and the Gibbs free energy was applied to reveal the reactivity and mechanism between ·OH and PPs with various functional groups. Results confirmed that PDB and phenol with the electron-donating group exhibited favorable reactivity, while PNP with an electron-withdrawing group presented a lower one. Furthermore, the oxidation mechanism between PPs and ·OH in the VUV system was also deeply investigated, mainly following four steps: photo-excitation, ·OH substitution, molecular rearrangement, and finally ring-opening. Among them, the required energy for the ring-opening was about 145 and 787-fold higher than that of ·OH substitution and molecular rearrangement. Results suggested that the formation of micro-fatty acids were the primary rate-controlling step.
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APPLIED CATALYSIS B-ENVIRONMENTAL
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2017
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IF 9.446
Xiahui Lin,Yilin Gao,Min Jiang,Yongfan Zhang,Yidong Hou,Wenxin Dai,Sibo Wang,Zhengxin Ding
Herein, we report the facile synthesis of uniform perovskite hydroxide CoSn(OH) 6 nanocubes and their first use as noble-metal-free, highly efficient and stable catalysts for the deoxygenative reduction of CO 2 to CO with visible light. The CoSn(OH) 6 sample is synthesized through a one-pot co-precipitation method and fully characterized by various techniques including XRD, FTIR, FESEM, TEM, EDX, EDX-mappings, XPS, DRS, and N 2 sorption measurements. The CoSn(OH) 6 solid is found by theoretical calculations to be capable of absorbing and activating CO 2 molecules on the (100) surface. Under the optimal reaction conditions, the CoSn(OH) 6 catalyst exhibits a high CO 2 reduction activity with visible light irradiation, affording a CO generation rate of 18.7 μmol h −1 . The stability and reusability of the CoSn(OH) 6 catalyst for photocatalytic CO 2 reduction are solidly confirmed. Results of in situ photoluminescence spectroscopy and photocurrent response characterizations indicate that the CoSn(OH) 6 catalyst can efficiently promote the separation and transfers of photoexcited charge carriers during photocatalysis, and eventually leading to obviously enhanced CO 2 photoreduction performance. Moreover, a possible mechanism for the photocatalytic CO 2 reduction reaction is also proposed based on the results of activity evaluation and photo-/electro-chemical measurements.
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Micro & Nano Letters
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2019
·Vol. 14
·期 11
·1151-1156
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IF 0.975
Min Shi,Yanhong Li,Hongtao Cui
A facile strategy for the preparation of composites with homogeneous distribution of multi-walled carbon nanotubes (MWCNTs) in Ni(OH) 2 was proposed. The electrostatic attraction between positively charged Ni(OH) 2 monolayer nanosheets and negatively charged MWCNTs was utilised to self-assemble the composites. The results of electrochemical measurement on the composite containing 30 wt% MWCNTs indicated that the homogeneous composition of MWCNTs in composite significantly reduced the electrical resistance and promoted the electrochemical utilisation of Ni(OH) 2 . As a result, the composite presented high electrochemical performance: having specific capacitance of 1568.8 F g −1 at low current density of 2.4 A g −1 and keeping a relatively high specific capacitance of 781.8 F g −1 at high current density of 81.7 A g −1 . Based on the results in this works, it is hoped that the adopted strategy could provide a promising idea for the preparation of composites with homogeneous distribution of individual components.
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HIGH PERFORMANCE POLYMERS
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2017
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IF 1.179
Jun Song,Zhendong Dai,Jingyu Li,Haichao Zhao,Liping Wang
Boron nitride-hydroxyl (BN–OH) was synthesized with silane coupling agent (KH550) in order to achieve epoxy/BN nanocomposites with excellent thermal, tribological, and mechanical properties. This is an efficient method to improve epoxy nanocomposite properties. These properties were investigated by friction and wear test, thermogravimetric analysis, and dynamic mechanical analysis. The wear mechanisms were studied by scanning electron microscopy. Surface modification of BN–OH with silane coupling agent significantly enhanced its thermal stability. Storage modulus of the nanocomposite with 2% epoxy/BN increased by nearly 300% in comparison with that of pure epoxy. The results exhibit outstanding performance of the epoxy/BN nanocomposites compared with pure epoxy resin.
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Progress in Natural Science-Materials International
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2024
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IF 4.8
Shijia Liu,Haibin Wang,Xi Wang,Jieshu Zhou,Hongyan Liang
Electroreduction of CO 2 for formic acid production has been regarded as an efficient option for CO 2 utilization. However, under high current, achieving high selectivity for formic acid is challenging, which cannot meet industrial demands. Herein, we reported a type of Bi/In(OH) 3 (BIO) heterojunction reconstructed from Bi 2 S 3 /In(OH) 3 during electrochemical process, in which In(OH) 3 was applied to modulate the electronic structure of Bi. This strategy efficiently enhanced the ∗OCHO intermediates adsorption and lead to a decent selectivity towards formic acid under high current density. BIO displays faraday efficiency of formic acid beyond 95 % across a wide range current density of 200–400 mA cm −2 , where the highest value reached 97.7 % at 400 mA cm −2 . This work clarified the mechanism of CO 2 electroreduction to HCOOH on heterojunction, guiding the design of advanced catalysts.
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BIOSENSORS & BIOELECTRONICS
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2024
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IF 10.7
Yanpei Xu,Haoyu Wu,Meng Sun,Hongyu Song,Chuxiao Sun,Fudong Jia,Qi Wang
In the detection of biomolecules, surface plasmon resonance (SPR) sensors require high sensitivity. In this study, we propose a sensitivity-enhanced functionalized plasmonic interface based on Ag–TiO 2 –Co(OH) 2 nanosheets structure. Compared to unmodified SPR sensors, the sensitivity of the sensor decorated with TiO 2 and Co(OH) 2 nanosheets is increased by 130.84%, reaching 5764.27 nm/RIU. This enhancement is attributed to the high refractive index of the coating, as well as the high specific surface area and abundant active sites provided by the synthesized Co(OH) 2 nanosheets with a multi-grooved structure. Additionally, employing a double-antibody sandwich method, the antibody-functionalized plasmonic interface enables specific detection of human serum albumin (HSA). The linear response of this sensor was in the wide range of 0.4–150 μM, and the LOD reached 154.89 nM(K D is approximately 1.73 × 10 −6 M). This novel SPR sensor offers a new strategy for biochemical sensing and provides a highly sensitive platform for immunoassays.
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PubMed
高影响因子
Battery Energy
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2024
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IF 9
Xiangchao Xu,Fen Qiao,Yanzhen Liu,Wenjie Liu
Cu(OH) 2 has the advantages of ease of structural regulation, good conductivity, and relatively low cost, making it a suitable candidate material for use as an electrocatalyst. However, its catalytic efficiency and stability still need to be improved further. Therefore, Cu(OH) 2 /Cu 2 S was successfully prepared on copper foam (CF) using the in situ growth and hydrothermal method. The structural characterization showed that sulfidation treatment induced transformation of Cu(OH) 2 /CF from smooth nanorods into a coral-like structure, which exposed more active sites of Cu(OH) 2 /Cu 2 S and enhanced the performance of electrocatalytic hydrogen evolution reaction (HER). Compared with Cu(OH) 2 , Cu(OH) 2 /Cu 2 S showed better alkaline HER performance, especially when the vulcanization concentration was 0.1 M, the overpotential of Cu(OH) 2 /Cu 2 S was 174 mV, and the reaction kinetics was 64 mv dec −1 at a current density of 10 mA cm −2 . In this work, the morphology and electronic structure of copper-based metal sulfide electrocatalysts were adjusted by sulfide treatment, which provided a new reference for improving HER performance.
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Materials Science and Engineering B-Advanced Functional Solid-State Materials
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2025
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IF 4.6
Xin Tian,Jianru Chen,Ruobing Jiang,Haiyang Chen,Jielin Zhang,Jinlong Ren,Xihao Yu,Lina Liu,Chenchen Feng,Cuixia Li,Fucheng Yu,Kechao Hu,Xiaogang Hou
Hydroxylated carbon quantum dots (OH-CQDs) modified g-C 3 N 4 hollow microspheres were prepared using a supramolecular precursor self-assembly method. The incorporation of OH-CQDs into the precursor resulted in the formation of a hollow flower-like microsphere structure composed of g-C 3 N 4 nanoflakes in the final samples, which exhibited a morphology that was roughly inherited from that of the supramolecular precursor. The incorporation of an optimal quantity of OH-CQDs did not result in a deterioration of the g-C 3 N 4 product morphology; rather, it led to an enhancement in its microsphere structure. The modified nanostructure of g-C 3 N 4 resulted in a significant increase in reaction sites and promoted the adsorption of organic dye molecules on the surface of the g-C 3 N 4 photocatalyst during degradation reactions. Furthermore, despite the reduction in carrier concentration of g-C 3 N 4 resulting from the decoration with OH-CQDs, the impedance was significantly diminished and the photocurrent density was also markedly improved. It can thus be concluded that the decoration of OH-CQDs has significantly enhanced the mobility of g-C 3 N 4 , thereby contributing to the improvement of the photocatalytic performance of the g-C 3 N 4 photocatalyst.
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ACS Applied Nano Materials
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2020
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IF 0
Ebrahim Ataeivarjovi,Yubing Liu,Zhigang Tang,Hao Ding,Dong Guo,Xiaofei Song,Guoxun Ben,Mengyue Zhou
The desorption process of CO2 absorbed by the hot-potash-alkali method was studied in this paper. In a traditional hot-potash-alkali process, the temperatures of KHCO3 aqueous solutions are high, moisture vaporization is serious, and energy consumption is high. We proposed that membrane desorption can be used instead of heating desorption and conducted relevant research. PDMS-PTFE-PVDF/PET was used as a composite membrane. The water evaporation considerably declined, and the decomposition conversion rate reduced to 25.5% as the equilibrium liquid-phase concentration decreased. Results show that the PDMS-PTFE-PVDF/PET composite membrane loaded with 1 wt % TiO(OH)2 nanoparticles can be used for membrane desorption, while the decomposition conversion rate of the KHCO3 aqueous solution decreased by only 4.2% after 10 cycles, and the effect was considerably improved. The comprehensive capture energy consumption was about 65% lower than that of the absorption-heating desorption process on account of the positive effect of TiO(OH)2 nanoparticles. Brief calculation, which is based on CO2 concentration tested by a gas analyzer and the linear fitting of the Arrhenius equation, demonstrates that the reaction activation energy can be reduced (Supporting Information).
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JOURNAL OF MATERIALS SCIENCE
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2022
·Vol. 57
·期 44
·20580-20588
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IF 4.682
Yan Jingjing,Zhu Chengwei,Liu Baohua,Shu Ruiwen
A facile synthetic route based on the assistance of magnetic field is reported to fabricate core–shell CoB@Co(OH) 2 nanochains for purpose of the high conductive pathway and enhanced pseudocapacitance in 3 M LiOH electrolyte. By adjusting the loading amount of the shell Co(OH) 2 nanosheets anchored on the core CoB alloy surface, the typical core–shell CoB@Co(OH) 2 is endowed with the appropriate pore volume of 0.27 cm 3 g −1 and the high accessible electrode/electrolyte interfacial area (62.3 m 2 g −1 ) and the fast conductive highway; meanwhile taking advantages of core–shell structure can be favor for fast ion transport between the electrode/electrolyte interphase and rapid electron transfer. Benefiting from the advantageous properties, the typical CoB@Co(OH) 2 electrode exhibits a high specific capacitance of 492.8 F g −1 in three-electrode device together with good cyclic stability (90.4% capacitance retention) during continuously 5000 cycles at 2 A g −1 . This work can provide an inspiring strategy for rational designing of core–shell CoB@Co(OH) 2 , and indicate their potential energy application in alkaline electrolyte. Graphical abstract
Core–shell CoB@Co(OH) 2 electrode with rapid conductive highway achieves the broaden voltage of 0.8 V and the enhanced supercapacitive performance.
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CHEMICAL ENGINEERING JOURNAL
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2025
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IF 13.2
Qunhong Liu,Zhen Liu,Zongxuan Yang,Qingchen Wu,Zimeng Li,Zhichen Liu,Zhengyu Zhao,Xinru Wu,Shidong Wang,Hongwei Zhang,Cejun Hu,Changhai Liang,Xiaojun Bao,Pei Yuan
Deep hydrogenation of dicyclopentadiene resin (DCPD resin) plays an important role in enhancing its performance and broadening its applications. However, designing suitable catalysts for promoting DCPD resin deep hydrogenation remains a challenge due to the high steric hindrance and abundant unsaturated bonds in DCPD resin, requiring strong binding to C=C double bonds. We herein propose a strategy for simultaneously constructing highly-dispersed Ni particles for hydrogen dissociation and interfacial Ni 0 /Ni(OH) + sites for C=C adsorption by controlled reduction of Ni phyllosilicate (Ni PS). The catalyst, after reduction at 400 °C, demonstrated balanced ratio between Ni 0 and interfacial Ni 0 /Ni(OH) + sites, and achieved a hydrogenation degree of 99.8% (TOF: 68.8 h −1 ) while maintaining 99.3% efficiency after seven consecutive cycles. Through in-situ DRIFTS analysis and density functional theory (DFT) calculations, it is confirmed that the introduction of Ni 0 /Ni(OH) + interfacial sites results in superior activity compared to pure Ni 0 or unreduced PS due to optimized charge transfer and electronic configuration. This work not only establishes a simple and environmentally-friendly approach to design efficient catalysts for polymer hydrogenation, but also provides insights into the mechanism of unsaturated bond hydrogenation through the synergistic effects of Ni 0 and Ni 0 /Ni(OH) + interfacial sites.
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Journal of Environmental Chemical Engineering
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2025
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IF 7.2
Panpan Wang,Meiyu Shi,Bochen Zhao,Yuan Shu,Qiang Niu,Pengfei Zhang
Carbide residue, a highly alkaline industrial solid waste generated during acetylene production, is primarily composing of Ca(OH) 2 . In this study, a top-down solid-state redispersion strategy. By synergizing mechanochemical activation with surfactant capping, we achieving the recycling of carbide residue to synthesize Ca(OH) 2 -CTAB anosheet-based desulfurization agent. The resultant material exhibits a significantly enhancing BET specific surface area (30.2 m 2 ·g −1 ) and abundant pore architecture. Comparative evaluations with Ca(OH) 2 -P123 and raw carbide residue revealing the superior performance of the Ca(OH) 2 -CTAB adsorbent, demonstrating a sulfur dioxide adsorption capacity of 2.57 mmol·g −1 is a 2-fold improvement over untreating carbide residue. Furthermore, significantly extends the fixed-bed penetration time to 43869 seconds. Comprehensive characterization through TG, FTIR, BET, SEM, TEM, and AFM elucidating the relationship between the nanosheet morphology and its exceptional desulfurization performance. This work provides a green methodology for upcycling industrial alkaline waste into functional nanomaterials for environmental remediation.
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