Journal of Water Process Engineering
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2025
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IF 6.7
Jin Chen,Ke Li,Jie Yan,Suqing Qin,Yuzhao Ma,Xiaofeng Yang,Yanjun Li
Designing heterojunction photocatalysts with staggered band structures and optimal interfacial interactions constitutes a feasible strategy to achieve superior photocatalytic performance. Herein, we synthesized a Pt@BiOBr/g-C 3 N 4 S-scheme heterojunction via in-situ construction and photochemical deposition. Notably, Platinum nanoparticles (NPs), precisely deposited via photochemical reduction, extend light absorption into the visible-NIR spectrum through localized surface plasmon resonance (SPR) while acting as electron mediators to suppress recombination. Under simulated solar irradiation, the optimized Pt@BiOBr/g-C 3 N 4 S-scheme heterojunction demonstrates complete degradation of tetracycline hydrochloride (TC-HCl) within 10 min. Additionally, the photocatalyst showed exceptional degradation efficiency for organic dyes including methyl orange (MO) and rhodamine B (RhB). More importantly, the synergistic interplay between internal electric field (IEF) and the SPR of Pt nanoparticles collectively facilitates rapid charge separation while suppressing electron-hole recombination. This study offers a path toward highly effective photocatalysts engineered for practical applications and elucidates the activity enhancement mechanism through Pt incorporation in ternary heterojunction systems.
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Acta Biomaterialia
·
2025
·
IF 9.6
Jie Zhang,Yanlong Wang,Yu Sun,Zeyi Zhou,Fengni Liu,Xinyu Zhang,Chuiyu Kong,Jiang Yuan,Meng Yin,Dongjin Wang
Intimal hyperplasia, thrombosis formation, and vascular calcification are the leading causes of failure in small-diameter vascular grafts. In the study, bilayer vascular grafts with separately released nitric oxide (NO) and resveratrol (RESV) were fabricated. S-nitrosated keratin nanoparticles (KNPs) were synthesized and subsequently electrospun with polycaprolactone (PCL) to prolong the NO release for up to 25 d in the presence of ascorbic acid and trypsin, serving as the inner layer of grafts. Additionally, RESV was incorporated into poly(ε-caprolactone-co-L-lactide) (PLCL) fibers to alleviate oxidative stress and inflammation, acting as the outer layer of the grafts. The PCL/KNPs//PLCL/RESV bilayer grafts were capable of promoting endothelial cell proliferation while inhibiting the excessive proliferation of smooth muscle cells. Notably, bilayer grafts could regulate macrophage polarization toward the M2 phenotype. In rat abdominal aorta replacement models, the grafts retained patency for 3 months. These grafts could accelerate endothelialization without apparent intimal hyperplasia, thrombosis, inflammation, and calcification. These bilayer grafts are promising for small-diameter tissue-engineered vascular grafts. Statement of Significance • S-nitrosated keratin nanoparticles (KNPs) were synthesized and subsequently electrospun to prolong the NO release for 25 d. • Resveratrol (RESV) was incorporated into PLCL fibers to alleviate oxidative stress and inflammation. • Bilayer grafts promoted EC proliferation while inhibiting SMC proliferation. • Bilayer grafts accelerated endothelialization without intimal hyperplasia, thrombosis, and calcification in vivo.
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高影响因子
Journal of Materials Chemistry A
·
2025
·
IF 9.5
Yuting Sun,Bin Yao,Yuhong Jiang,Yongfeng Li,Xiaobo Du,Zhanhui Ding,Jiayong Zhang,Chunkai Wang,Ding Ma,Mengge Li,Yan Zhu,Xiaofei Sun,Ning Ding,Liyuan Shi
It is well known that the improvement of crystal quality and photoelectric properties of Cu2ZnSn(S,Se)4 (CZTSSe) is one of the key issues in enhancing power conversion efficiency (PCE). To resolve this problem, we selected Li2CO3 as a Li source to prepare Li-doped CZTSSe by annealing Li-doped Cu2ZnSnS4 (CZTS) precursor films in air, followed by selenization (CZTSSe-Li-A). It is interesting that the air annealing leads to the incorporation of Li and O into CZTSSe in the form of Li-O pairs, which improves the crystal quality and absorption coefficient (α) of CZTSSe-Li-A and decreases its hole concentration and resistivity compared with Li-doped CZTSSe prepared using Li-doped CZTS that is not annealed in air (CZTSSe-Li). By optimizing Li doping concentration, annealing temperature and time, the highest PCE of CZTSSe-Li-A solar cell without MgF anti-reflection layer reaches 11.13%, which is larger than the highest PCE of CZTSSe-Li solar cell (10.21%). Quantitative analysis indicates that the increased PCE of CZTSSe-Li-A solar cell compared to CZTSSe-Li solar cell is mainly attributed to the decrease in reverse saturation current density (J0) and series resistance (Rs) caused by thermal effect of the air annealing, followed by an increase in photogeneration density (JL) and shunt resistance (Rsh). The decreased J0 is due to a reduction in interfacial defect density, increased JL is due to increase in α and depletion region width, and decreased Rs and increased Rsh are due to improve crystal quality. This work offers a route for the improvement of PCE of CZTSSe solar cells.
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ACS Applied Materials & Interfaces
·
2024
·
IF 8.3
Xuan Yang,Xueqin Wang,Shenghao Xu,Beili Lu,Biao Huang,Xinyu Zheng,Guanfeng Lin
Hydroquinone (HQ) in wastewater is of great concern, as it is harmful to human health and threatens the ecological environment. However, the existing adsorbents have low adsorption capacity for HQ. To improve the removal of HQ, N,S-codoped activated carbon-ZIF-67 (NSAC-ZIF-67@C) was synthesized in this study by in situ growth of ZIF-67 on N,S-codoped activated carbon (NSAC) and carbonization. The influence of pH, contact time, and initial concentration on the adsorption behaviors of NSAC-ZIF-67@C on HQ were investigated. Owing to the synergistic effect of abundant active sites and well-developed pore structure, the NSAC-ZIF-67@C achieved a prominent adsorption capacity of 962 mg·g–1 and can still retain high adsorption performance after 5 cycles for HQ, which is superior to that of reported other adsorbents. HQ adsorption follows the pseudo-second-order kinetics model (R2 = 0.99999) and the Freundlich isotherm model. X-ray photoelectron spectroscopy (XPS) analysis before and after adsorption as well as density functional theory (DFT) calculation results showed that pyridinic-N-termini were conducive to the π–π interactions and hydrogen-bonding interactions. Therefore, the adsorption mechanisms of NSAC-ZIF-67@C on HQ involve pore filling, electrostatic attraction, π–π interaction, and hydrogen bonding. This study is expected to provide a reference for designing highly effective adsorbents for wastewater treatment.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
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2024
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IF 13.3
Hua Chai,Jun Nan,Wenxing Jin,Fangmin Wu,Bohan Liu,Yan Guo
Hydrogen peroxide (H 2 O 2 ) serves as a critical industrial chemical and potential energy carrier. Photocatalytic synthesis presents a viable alternative to the anthraquinone process, yet existing catalyst systems exhibit restricted sunlight wavelength responses and inadequate activity. In this study, zinc phthalocyanine/polymer carbon nitride (ZnPc/PCN) S-scheme heterojunction formation extends the photocatalyst's light absorption range to the near-infrared region (400–800 nm) and generates an internal electric field at the interface, facilitating photogenerated carrier separation and transfer. ZnPc/PCN exhibits an AQY of 1.11 % for H 2 O 2 production under 800 nm irradiation. The optimized ZnPc/PCN yields 1.87 mM H 2 O 2 , surpassing the original PCN and ZnPc by 1.36 and 93.5 times, respectively·H 2 O 2 production remains above 1.5 mM (80 %) after five cycles, demonstrating ZnPc/PCN stability. Detection of intermediate ·OOH suggests H 2 O 2 production via 2 e - oxygen reduction processes. This research offers novel insights for designing near-infrared absorbing photocatalysts.
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ChemSusChem
·
2024
·
IF 7.5
Weikang Wang,Shaobin Mei,Shahid Khan,Yujue Hu,Lijuan Sun,Muhammad Adnan Qaiser,Chengzhang Zhu,Lele Wang,Qinqin Liu
Graphical A molecular-level hierarchical Znln 2 S 4 /HPW S-scheme heterojunction was prepared through one-pot hydrothermal method in this work. The obtained Znln 2 S 4 /HPW heterojunction photocatalysts indicated molecular-level interfacial contact, enhanced light absorption, and accelerated charge separation and transfer, achieving efficient overall H 2 production and benzyl alcohol oxidation with corresponding photogenerated electrons and holes, respectively. Simultaneous utilization of photogenerated electrons and holes to achieve overall redox reactions is attractive but still far from practical application. The emerging step (S)-scheme mechanism has proven to be an ideal approach to inhibit charge recombination and supply photoinduced charges with highest redox potentials. Herein, a hierarchical phosphotungstic acid (H 3 PW 12 O 40 , HPW)@Znln 2 S 4 (ZISW) heterojunction was prepared through one-pot hydrothermal method for simultaneous hydrogen (H 2 ) evolution and benzyl alcohol upgrading. The fabricated HPW-based heterojunctions indicated much enhanced visible-light absorption, promoted photogenerated charge transfer and inhibited charge recombination, owing to hierarchical architecture based on visible-light responsive Znln 2 S 4 microspheres, and S-scheme charge transfer pathway. The S-scheme mechanism was further verified by free-radical trapping electron spin resonance (ESR) spectra. Moreover, the wettability of composite heterojunction was improved by the modification of hydrophilic HPW, contributing to gaining active hydrogen (H + ) from water sustainably. The optimal ZISW-30 heterojunction photocatalyst indicated an enhanced hydrogen evolution rate of 27.59 mmol g −1 h −1 in benzyl alcohol (10 vol. %) solution under full-spectrum irradiation, along with highest benzaldehyde production rate is 8.32 mmol g −1 h −1 . This work provides a promising guideline for incorporating HPW into S-scheme heterojunctions to achieve efficient overall redox reactions.
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SOLAR ENERGY MATERIALS AND SOLAR CELLS
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2024
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IF 6.3
Yanqing Wang,Mengzhu Li,Dongchen Guo,Min Fan,Jingjun Zhang,Juan Guo,Hongzhan Dong,Chengwu Shi
Antimony selenosulfide (Sb 2 (S,Se) 3 ) solar cells hold significant promise for sustainable photovoltaic technology due to their adjustable band gap, high absorption coefficient and good stability. In terms of device operation, the transfer of electrons from the Sb 2 (S,Se) 3 layer to the electron transport layer (ETL) plays a crucial role in improving the photovoltaic performance of solar cells. Until now, high-efficiency Sb 2 (S,Se) 3 solar cells have typically employed cadmium sulfide (CdS) as the ETL. However, inadequate interface contact between the CdS and the Sb 2 (S,Se) 3 layer often results in severe interface recombination, and the parasitic light absorption of CdS restricts the short-circuit current density ( J sc ). Therefore, the development of high-quality CdS film along with reduction of cadmium element usage remains an import issue for the Sb 2 (S,Se) 3 solar cells. Herein, the poly(acrylic acid)-modified tin oxide (PAA-SnO 2 )/CdS double ETLs are introduced to improve the quality of both the CdS film and Sb 2 (S,Se) 3 film, while also strengthening the interface contact between CdS and Sb 2 (S,Se) 3 . The power conversion efficiency of the corresponding solar cells increases from 7.45% in the control device to 8.15% in the modified device. This work provides a simple PAA-modified SnO 2 -assisted CdS ETL strategy to improve the interface of CdS/Sb 2 (S,Se) 3 , thereby achieving efficient and stable Sb 2 (S,Se) 3 solar cells.
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Journal of Saudi Chemical Society
·
2024
·
IF 5.8
Liping Zhao,Ye Zhao,Lihe Zhao,Gang Liu
A nitrogen-phosphorus dual-doped auricularia auricula carbon (NP-AC) matrix was prepared through hydrothermal treatment using natural auricularia auricula as raw material and medium solution. Yeast was introduced and cultured by the auricularia auricula liquid medium. The NP-AC/S composite was prepared through further freeze-drying, carbonization, activation and compounding with sulfur procedures. The composition and microstructure of samples was characterized by X-ray diffraction (XRD), raman and X-ray photoelectron spectroscopy (XPS). The morphology was observed under scanning electron microscope (SEM) and transmission electron microscopy (TEM) method. The specific surface area was analyzed using nitrogen adsorption/desorption test. The weight ratio of sulfur was measured through thermogravimetric (TG) analysis. The original structure and composition of biomass were improved by yeast fermentation and the auricularia auricula block structure with low porosity was modified. The electrochemical performance of NP-AC/S composite in Li-S batteries was systematically explored. After 100 cycles at 0.2C current density, there was still nearly 1000 mAh g −1 reversible capacity, holding a capacity retention rate of more than 84 %. The cycle performance and rate performance were both far better than the ordinary activated carbon materials.
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eScience
·
2025
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IF 36.6
Lijing Wang,Chang Wu,Yu Gao,Hongfang Du,Shailendra K. Sharma,Aaron T. Marshall,Yang Liu,Yi Zhao,Shixue Dou,Liang Huang,Shaowei Zhang,Chao Wu,Liangxu Lin
The catalytic conversion of polysulfides remains a critical bottleneck in the development of high-performance lithium–sulfur batteries (LSBs). Despite extensive efforts to engineer carbon-based materials for LSBs, such as nitrogen (N)-doped graphene, the intrinsic limitations of conventional N-doped configurations have hindered catalytic effectiveness. Here, we reveal how the curvature-rich structure of N-doped graphene (N-CR-G) regulates catalytic properties to promote the sulfur reduction reaction (SRR). This architecture induces a diversity of active N configurations and optimizes the local electronic structure, directly accelerating the polysulfide redox kinetics. Unlike conventional carbon-based materials, the main N-doped configuration of N-CR-G catalyzes an uncommon asymmetric reaction pathway involving the rapid generation of soluble radicals, effectively suppressing the accumulation of insoluble Li 2 S 2 intermediates and enhancing sulfur utilization. While the curvature structure also facilitates carbon vacancy formation and enables room-temperature N doping, its primary contribution lies in tailoring the catalytic landscape of graphene. This work underscores the significance of curvature engineering for activating and regulating electrocatalytic behavior, offering a powerful strategy to design advanced cathode materials for highly promising LSBs.
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JOURNAL OF POWER SOURCES
·
2018
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IF 6.945
Bohong Chen,Zhongqing Jiang,Lingshan Zhou,Binglu Deng,Zhong-Jie Jiang,Jianlin Huang,Meilin Liu
A simple synthetic method is developed for the synthesis of CoS 2 /N, S-codoped graphene. The result shows the existence of a strong electronic coupling between CoS 2 and N, S-codoped graphene. The pyrrolic and pyridinic type nitrogen and S in the form of C-S-C in N, S-codoped graphene are found to be the anchoring sites of the CoS 2 nanoparticles . As a bifunctional catalyst , the CoS 2 /N, S-codoped graphene exhibits an oxygen reduction onset potential of 0.963 V vs. RHE and delivers an oxygen evolution overpotential of 393 mV at the current density of 10 mA cm −2 . Its oxygen reduction and evolution catalytic activities are comparable to those of the Pt/C and the state-of-art RuO 2 /C, respectively. Most impressively, the CoS 2 /N, S-codoped graphene exhibits a potential gap of 771 mV. This value is lower than those of most bifuntional catalysts reported, clearly indicating its potential use as the bifunctional catalyst to replace the noble-metal based catalysts for practical applications. Additionally, our results also suggest a great importance to prepare a single pure phase CoS 2 in improving the catalytic bifunctionality of the CoS 2 /N, S-codoped graphene. The primary Zn-air battery with CoS 2 /N, S-codoped graphene shows a higher discharge peak power density than that with Pt/C.
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Journal of Physical Chemistry C
·
2021
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IF 4.126
Di Wu,Wen Ren,Yang Yang,Jiulin Wang,Yanna NuLi
A magnesium–sulfur (Mg–S) battery system is considered a high-performance candidate for next-generation secondary batteries, because of its prominent advantages such as high safety, low cost, and high energy density. However, the shuttle effect caused by the dissolution of polysulfides leads to irreversible loss of capacity. Herein, we prepare a S0.96Se0.04@CMK3 composite (with a high S + Se content of 82.6 wt %) and employ the composite material as a cathode for Mg batteries with easily prepared hybrid electrolytes. The electronic conductivity of the cathode material increases by 18 orders of magnitude after Se doping, from 5 × 10–28 to 6.5 × 10–10 S m–1. Compared with S@CMK3, doped Se in S0.96Se0.04@CMK3 plays an important role in maintaining capacity stability by lowering polarization, facilitating electron transport, and improving reaction kinetics. The S0.96Se0.04@CMK3 cathode delivers a stable and reversible capacity of 492.9 mAh g–1 after 110 cycles, which is almost twice that of the S@CMK cathode without Se doping, and better rate performance. This Se-doping strategy proposes an effective method to exploit high-performance cathodes for Mg–S batteries.
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Small
·
2018
·Vol. 14
·期 41
·1802443
·
IF 9.598
Xiao-Tian Gao,Ying Xie,Xiao-Dong Zhu,Ke-Ning Sun,Xu-Ming Xie,Yi-Tao Liu,Jian-Yong Yu,Bin Ding
Being conductive and flexible, 2D transition metal nitrides and carbides (MXenes) can serve in Li–S batteries as sulfur hosts to increase the conductivity and alleviate the volume expansion. However, the surface functional groups, such as OH and F, weaken the ability of bare MXenes in the chemisorption of polysulfides. Besides, they create numerous hydrogen bonds which make MXenes liable to restack, resulting in substantial loss of active area and, thus, inaccessibility of ions and electrolyte. Herein, a facile, one-step strategy is developed for the growth of TiO 2 quantum dots (QDs) on ultrathin MXene (Ti 3 C 2 T x ) nanosheets by cetyltrimethylammonium bromide-assisted solvothermal synthesis. These QDs act as spacers to isolate the MXene nanosheets from restacking, and preserve their 2D geometry which guarantees larger electrode–electrolyte contact area and higher sulfur loading. The stronger adsorption energy of polysulfides with TiO 2 (than with Ti 3 C 2 T x ), as proven by density functional theory calculations, is essential for better on-site polysulfide retention. The ultrathin nature and protected conductivity ensure rapid ion and electron diffusion, and the excellent flexibility maintains high mechanical integrity. In result, the TiO 2 QDs@MXene/S cathode exhibits significantly improved long-term cyclability and rate capability, disclosing a new opportunity toward fast and stable Li–S batteries.
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