JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
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2025
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IF 4.7
Jinxia Liang,Hongxia Chen,Kunfeng Zhang,Boyi He,Bo Peng,Baozhong Zhang,Hanyu Chen,Jingli Xu,Guofu Sun,Hongxing Dai
Herein, Ti-deficient TiO 2 was combined with oxygen-deficient BiOCl to construct a core-shell structured TiO 2 /BiOCl S-scheme heterojunction. The defect-engineered TiO 2 and BiOCl exhibited significantly enhanced tetracycline (TC) removal efficiency, which were 4.4 and 2.5 times higher than those over the defect-free TiO 2 (TiO 2 -R) and BiOCl (BiOCl-R) samples, respectively. The optimized TiO 2 /BiOCl-2 photocatalyst demonstrated the highest degradation efficiency, outperforming single BiOCl and TiO 2 by 3.2 and 2.9 times, respectively. In-depth explorations showed that the enhanced photocatalytic activity originated from the establishment of an interfacial electric field at the core/shell interface, the enhanced light utilization efficiency, and the established S-scheme charge transfer pathway. More importantly, TiO 2 /BiOCl-2 also manifested superior photocatalytic degradation efficiency when subjected to complex reaction environments. By taking into account the contributions of involved reactive species and produced intermediates, both the reaction mechanism and toxicity assessment were thoroughly explored. The present work showcases an effective strategy to improve photocatalytic efficiency by virtue of the synergy between core-shell heterojunction and defect engineering.
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SOLAR ENERGY MATERIALS AND SOLAR CELLS
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2025
·
IF 6.3
Jingyuan Guo,Letu Siqin,Yufei Li,Wenbo Li,Ruijian Liu,Hongmei Luan,Chengjun Zhu
The band alignment of Cu 2 ZnSn(S,Se) 4 (CZTSSe)/CdS(In) in novel CZTSSe solar cells without a ZnO window layer has been initially investigated in our previous studies. However, the In content of CdS(In) diffused into the absorber is low, and the ability to regulate the band arrangement is limited. In this work, we employ In-ion-doped absorbers to adjust defects. However, this approach leads to a significant loss in short-circuit current density (Jsc). To address this, Cd is introduced to enhance Jsc through grain growth promotion and morphological improvement, thereby offsetting the Jsc loss induced by In doping. The co-doping of In and Cd reduces the conduction band offset (CBO) from 0.28 eV to 0.21 eV, thereby inhibiting carrier recombination and enhancing transport efficiency. Additionally, the concentration of bulk defects is reduced by an order of magnitude. As a result, the fill factor (FF) increased from 56.97 % to 60.08 %, Jsc increased from 37.10 mA/cm 2 to 38.66 mA/cm 2 , and open-circuit voltage (Voc) increased from 431.64 mV to 440.48 mV. Finally, the power conversion efficiency (PCE) of CZTSSe solar cell is enhanced to 10.23 %.
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MACROMOLECULES
·
2020
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IF 5.918
Dalong Zhai,Mingjing Zhu,Shuwen Chen,Yue Yin,Xin Shang,Lixin Li,Gang Zhou,Juan Peng
Despite recent impressive advances in synthesis of all-conjugated diblock copolymers via facile quasi-living Grignard metathesis (GRIM) polymerization, it remains challenging to achieve well-defined all-conjugated triblock copolymers of interest. Herein, we report the judicious design and synthesis of a series of all-conjugated triblock copoly(3-alkylthiophene)s consisting of poly(3-butylthiophene) (P3BT), poly(3-hexylthiophene) (P3HT), poly(3-octylthiophene) (P3OT), or poly(3-dodecylthiophene) (P3DDT) in all 12 possible combinations. The effects of block sequences and the length of alkyl side chains on their cocrystallization and microphase-separated structures are investigated. Moreover, the correlation between different crystalline structures and charge mobilities in organic field-effect transistors (OFETs) is scrutinized. These rationally synthesized triblock copoly(3-alkylthiophene)s self-assemble into cocrystals with an edge-on orientation in as-cast and 150 °C-annealed samples. Remarkably, the combinations with the shortest alkyl side chains placed as the central block (i.e., P3HT-b-P3BT-b-P3OT, P3HT-b-P3BT-b-P3DDT, P3OT-b-P3BT-b-P3DDT, and P3OT-b-P3HT-b-P3DDT) exhibit higher film crystallinity and charge mobilities than the other two combinations where the blocks with shortest alkyl side chains are located at two terminals. Intriguingly, upon thermal annealing near the melting temperature of these combinations, P3BT-b-P3OT-b-P3HT, P3BT-b-P3DDT-b-P3OT, and P3HT-b-P3DDT-b-P3OT can retain their cocrystalline structure while the other combinations are found to microphase separate. Finally, the all-conjugated triblock copoly(3-alkylthiophene)s with proper block sequence demonstrate stable charge mobilities at high temperatures and good flexibility in OFET devices. Taken together, this study elucidates that the block sequence is of key importance on control of the crystallization and charge transport behavior of poly(3-alkylthiophene)-based triblock copolymers.
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Polymer Chemistry
·
2017
·Vol. 8
·期 9
·1573-1578
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IF 5.375
Ze Li,Chunyong Wu,Lifeng Liu,Meijiang Li,Xiongfa Yang,Chaowei Hao,Qiu Chen,Ziqiang Hu,Mengxian Luo,Guoqiao Lai,Tien-Yau Luh
Macrocyclic polysiloxanes are useful materials for the development of interpenetrating polymer networks and thermally stable materials. The main drawbacks of reported methods for the preparation of macrocyclic polysiloxanes are that mixtures of linear and cyclic polysiloxanes are commonly obtained, and complex and time-consuming separation processes are needed. Moreover, the preparation of macrocyclic polysiloxanes occasionally needs harsh conditions, and in general has low efficiency. In this research, we find that highly pure macrocyclic poly(methylvinylsiloxane)s (cPMVSs) can be chemoselectively prepared from 1,3,5,7-tetramethyl-1,3,5,7-tetravinylcyclotetrasiloxane with water catalyzed by anhydrous iron(III) chloride in high efficiency. The structure of cPMVSs is characterized by gel permeation chromatography, infrared spectroscopy, 1H- and 29Si-nuclear magnetic resonance (NMR), and viscosity. Thermogravimetric analysis shows that cPMVSs have excellent thermal stability. A metathetical ring-expanding polymerization mechanism is proposed.
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INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
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2020
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IF 3.573
Qian Zhu,Xun Sun,Hong Zhao,Dan Xu,Zhengping Dong
The N, S co-doped carbon nanotube-encapsulated Co nanoparticle (NP) material was prepared by one-pot pyrolysis of cheap precursor materials. As-prepared Co@NSC-800 exhibited excellent catalytic activity in transfer hydrogenation and N-formylation of nitroarenes, and the solvent and hydrogen source were the critical factors affecting the selectivity of aniline and benzamide. Moreover, the synergistic effect between Co NPs and N, S atoms was beneficial to improve the catalytic efficiency of Co@NSC-800; especially, the incorporation of S atoms greatly boosted the selectivity of N-formylation. Despite the use of HCOONH4 (HCOOH) as a hydrogen donor for hydrogenation and formylation of nitroarenes, the special nanotube structure of the Co@NSC-800 catalyst effectively prevented the corrosion of Co NPs and showed excellent durability under harsh reaction conditions. In addition, the catalyst maintained excellent catalytic activity after six cycles and was easily separated using an external magnet. Thus, this study can provide an effective method for the transfer hydrogenation and formylation of nitroarenes.
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CHEMICAL ENGINEERING JOURNAL
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2024
·
IF 13.3
Qianqian Wang,Xiaoyan Ma,Wei You,Pengcheng Ma,Ran Bi,Senyang Song,Fang Chen,Fengjin Qu,Xinli Wang,Pengfei Liu
The construction of cost-effective and high-performance metal organic framework (MOF) derived metal phosphides as multifunctional electrode materials for self-powered overall water splitting (OWS) is considerable promising. Herein, the trimetallic phosphides embedded in sulfur-containing carbon matrix (SC-FeNiCeP/NF) derived from high-valence metal engineered MOF are grown on nickel foam by hydrothermal and chemical vapor deposition for achieving self-powered OWS. Based on the electron coupling between the metal phosphide interface by high-valent Ce as “electronic storage” to accelerate electron transfer, the SC-FeNiCeP/NF as electrocatalysts present low overpotential with 208 mV and 107 mV at 10 mA cm −2 in oxygen evolution reaction (OER) and hydrogen evolution reaction (HER), respectively. For supercapacitor, the SC-FeNiCeP/NF nanoarray exhibits high specific capacitance with 2290 F g −1 at 1 A g −1 . Combined with excellent SC-FeNiCeP/NF-based asymmetric supercapacitor (ASC) and OWS devices, the self-powered OWS are assembled to produce H 2 and O 2 simultaneously in alkaline water for up to ∼ 120 s, creating new possibilities for the energy storage and conversion systems based on the designable and multifunctional MOF-derived materials.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2022
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IF 9.965
Dawei Liu,Katam Srinivas,Xin Chen,Fei Ma,Xiaojuan Zhang,Xinqiang Wang,Bin Wang,Yuanfu Chen
It is still challengeable but significant to rationally develop dual-metal single-atom catalysts with rich accessible active sites and excellent intrinsic catalytic activity towards oxygen reduction reaction (ORR). Herein, we present a novel dual-metal single-atom catalyst, Fe and Zn single atoms homogenously anchored on carbon nanotubes inlaid N, S-doped hollow carbon polyhedrons (FeZn-NSC), synthesized by facile iron-salt impregnation and high-temperature pyrolysis for zeolitic imidazolate framework-8. Due to the synergistic effects of the hierarchical porous nanoarchitecture with high specific surface area (795.48 m 2 g −1 ), N, S co-doped hollow carbon polyhedrons, in-situ grown highly conductive carbon nanotubes, and high loading of dual-metal single-atoms of Fe (3.12 wt%) and Zn (3.71 wt%), the optimized FeZn-NSC delivers outstanding ORR performance with high half-wave potential of 0.87 V, low Tafel slope of 44.7 mV dec −1 , long-term durability, and strong tolerance of methanol crossover. This work provides a strategy to rationally design and facilely synthesize dual-metal single-atom catalysts with high ORR activity.
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DOI
PubMed
高影响因子
CRYSTAL GROWTH & DESIGN
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2019
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IF 4.153
Fanfan Fan,Haikuan Yuan,Yonghao Feng,Fengjiao Liu,Lijuan Zhang,Xijian Liu,Xueyan Zhu,Wei An,Sohrab Rohani,Jie Lu
In this work, the solubilities of (R)- and (R,S)-crizotinib in six solvents including methanol, ethanol, 1-propanol, 1-butanol, ethyl acetate, and n-hexane were first measured by a static method in the temperature range from 273.15 to 323.15 K at atmospheric pressure. Then, molecular simulations were performed to predict the crystal structures of (R)-crizotinib and (R,S)-crizotinib from their powder X-ray diffractograms and the solubilities in the above organic solvents using the Gibbs free energy calculation approach via the sublimation cycle. The results showed that the solubilities of (R)- and (R,S)-crizotinib in the selected solvents generally increased with the increasing temperature, and at room temperature the molar fraction solubility order was methanol > 1-butanol > 1-propanol > ethanol > ethyl acetate > n-hexane. The (R)-crizotinib crystal had a monoclinic unit cell, while the (R,S)-crizotinib crystal had a triclinic one. In particular, though it was first applied to the solubility estimation for water-insoluble drug compounds in organic solvents, the Gibbs energy calculation approach developed gave a desirable solubility prediction performance with a root-mean-square error (RMSE) of 0.7638 log S units for (R)-crizotinib and 1.1577 log S units for (R,S)-crizotinib in the selected solvents, respectively. Furthermore, the difference in the solubilities of (R)-crizotinib in different solvents mainly resulted from the different Gibbs free energies for solvation between solute and solvent other than those for sublimation. However, as to the difference in the solubilities of (R)- and (R,S)-crizotinib in the same solvent, the Gibbs free energy for sublimation made more of a contribution than that for solvation. Finally, on the basis of the solid-state characterization, the nature of crystalline (R,S)-crizotinib was confirmed to be a racemic compound. All these results shall provide pharmaceutical industry with a better understanding of this chiral system for crystallization resolution.
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RSC Advances
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2016
·Vol. 6
·期 8
·6029-6037
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IF 3.289
Di Lu,Lele Wen,Feng Nie,Lixin Xue
A serials of imidazolium functionalized poly(arylene ether sulfone) as anion exchange membranes (AEMs) for all-vanadium redox flow battery (VRB) application are synthesized successfully in this study. The AEMs obtained with different ionization levels, Im-PAES-0.5/0.7/1.1 (0.5/0.7/1.1 represents the different degrees of bromination, respectively) membranes are intensively characterized. Compared with commercial Nafion 117 membrane, the vanadium ion permeation values of AEMs are lower while their chemical stability in VO2+ are comparable. The ionic conductivities, vanadium ion permeability, stability of the membranes and their performance in VRB cells are greatly affected by ionic exchange capacity (IEC). In order to balance these important performance factors, the Im-PAES-0.7 membrane with a moderate IEC of 2.01 meq g−1 exhibits good stability, high ionic conductivity and low vanadium ion permeation, resulting in high voltage efficiencies (up to 87.5%), high coulombic efficiencies (up to 96.1%), as well as high energy efficiency. The VRB cell with the Im-PAES-0.7 membrane achieves comparable to or even slightly higher energy efficiency values (up to 81.7%) than those of Nafion 117 membranes (up to 78.9%) in the current density range of 60–120 mA cm−2. During 40 charge–discharge cycles at different current densities, the Im-PAES-0.7 anion exchange membrane exhibits a comparable short-term stability to Nafion 117 membrane.
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DESALINATION
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2025
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IF 9.8
Baochuan Qi,Yu Li,Huaili Zheng,Wanying Xie,Li Li,Zhiwei Zhao
Membrane capacitive deionization (MCDI) shows potential for brackish water desalination, but is limited by inefficient electrode materials. We developed a porous carbon electrode by co-pyrolyzing exhausted reverse osmosis membranes (EROM) with organic potassium salts (PIPES-K2). Our findings show that the PIPES-K2 doping ratio impacts desalination performance more than the co-pyrolysis temperature. At a 3:1 PIPES-K2-to-EROM ratio, the NS-EROMC3 electrode achieved a salt adsorption capacity (SAC) of 32.76 mg g −1 , showing the highest performance. Surface analysis confirmed that interconnected hierarchical pores and defective edge-N/S sites in NS-EROMC3 were key to its efficiency. NS-EROMC3 demonstrated exceptional cycling stability (< 20 % capacity loss over 60 cycles) and adaptability to diluted saline-alkali soil drainage. In situ Raman and Density Functional Theory (DFT) calculations attributed this performance to carbon vacancies and enriched edge-N/S defects. The PIPES-K2 co-pyrolysis strategy was extended to other carbon precursors. This study provides a scalable method for producing high-performance MCDI electrodes while repurposing wasteful resources.
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INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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2025
·
IF 8.3
Renzhi Xiong,Xiao Xiao,Yanjie Song,Keqin Chen,Yanhe Xiao,Baochang Cheng,Shuijin Lei
Photocatalytic technology offers a promising “one-stone-two-birds” solution to simultaneously combat energy scarcity and environmental contamination through hydrogen production and pollutant degradation. However, conventional photocatalysts suffer from severe limitations in bifunctional efficiency due to rapid charge recombination, poor visible-light harvesting, and inadequate redox power. Herein, a novel 1D/2D core-shell Sb 2 S 3 @SnIn 4 S 8 S-scheme heterojunction photocatalyst is engineered. The unique architecture, featuring Sb 2 S 3 nanorods wrapped by SnIn 4 S 8 nanosheets, achieves (i) maximized interfacial contact and charge transfer pathways, (ii) exposed active sites through high specific surface area, and (iii) directional spatial separation of photogenerated carriers. Crucially, the S-scheme heterojunction drives efficient charge separation while preserving strong redox capability. The Sb 2 S 3 @SnIn 4 S 8 catalyst realizes breakthrough dual-functionality: an outstanding average H 2 evolution rate of 3566.1 μmol g −1 h −1 and an impressive 90.5% degradation efficiency of tetracycline hydrochloride under 2 h of visible-light illumination. This performance surpasses the individual components by 7.6-fold (vs. Sb 2 S 3 ) and 4.8-fold (vs. SnIn 4 S 8 ) in H 2 production, highlighting the synergy. Moreover, the catalyst demonstrates broad applicability across diverse pollutant systems. This study provides a scalable platform for developing dual-functional photocatalysts toward sustainable energy-water nexus solutions.
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MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
·
2025
·
IF 4.6
Rui Wang,Yanchun Yang,Guonan Cui,Lulu Bai,Zhihui Gong,Chengjun Zhu
CuSb(S, Se) 2 (CASSe) is known to have great potential for copper-based low-cost thin-film solar cells due to its excellent stability, earth-abundant raw materials, and suitability for the low-temperature preparation process. In this work, CASSe thin-film solar cells were prepared using the green n-butylammonium butyrate ionic solution-based method for the first time. The phase purity, crystallinity , morphology, and electrical properties of films prepared at different conditions (sintering and selenization conditions) were studied. With the help of the XRD , Raman spectra , SEM, and c-AFM measurements, the optimal preparation of CASSe thin film is confirmed at 230 °C for 3 min (sintering condition) and 390 °C for 20 min (selenization condition). Using glass/Mo/CuSb(S, Se) 2 /CdS/i-ZnO/ITO/Al as the structure of the device, the corresponding thin film solar cell can be fabricated, which presents a photoelectric conversion efficiency (PCE) of 0.14 %. Although the performance of the device is poor, our conclusions are meaningful in the development of CASSe material, supplementing the blank of preparing CASSe thin film solar cells by the green solution-based method.
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