Journal of Cleaner Production
·
2021
·
IF 9.297
Yin Zhang,Guomin Zhao,Lu Gan,Hailan Lian,Mingzhu Pan
The exploration of highly efficient and stable visible-light-driven photocatalysts remains a great challenge for organic pollutant management. Herein, a novel S-doped carbon nanosheet (SCN)/ZnO composite photocatalyst has been synthesized via a facile method using the freeze-drying cellulose nanocrystals (CNCs) as the carbon precursor. The surface morphology and chemical environment of SCNs can be regulated simultaneously with S-doping. Compared to the pristine carbonized CNCs (CN), the SCN carbonized at 550 °C (SCN-550) has regular nanosheet-like morphology, integrated graphitic structures ( I D / I G of 0.692), rich surface heteroatoms (14.62 at% for O, 1.93 at% for S), and most content of oxidized-S atoms (100 at%). It endows the increased surface reactive sites (specific surface area of 45.55 m 2 g −1 ), accelerated electron transfer , enhanced visible-light absorption, and prolonged carrier lifetime for the corresponding SCN-550/ZnO composite. Consequently, the SCN-550/ZnO shows an outstanding photocatalytic performance for methylene blue (99%). In addition, SCN-550/ZnO composite exhibits general application to organic contaminants , including phenol (91%), formaldehyde (92%), acetone (79%), and methyl alcohol (84%), respectively. Furthermore, the strong interaction of Zn–O–C covalent bond between SCN-550 and ZnO ensures the high photocatalytic activity of SCN-550/ZnO composite after four cycles, demonstrating its excellent reusability and stability. This study develops a highly efficient visible-light photocatalyst of CNCs derived S-doped carbon nanosheets supported ZnO for environment purification.
研究领域:
环境科学
·
材料科学
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DOI
高影响因子
JOURNAL OF APPLIED ELECTROCHEMISTRY
·
2016
·Vol. 46
·期 7
·725-733
·
IF 2.223
Zhu Shaoyin,Yu Jiaojiao,Yan Xiao,Zhao Erqing,Wang Yanqing,Sun Deye,Jin Yongcheng,Kanamura Kiyoshi
Abstract A sulfur cathode with enhanced electrochemical properties is prepared by a hydrogel binder owning three-dimensional polymeric network for Li–S batteries. The promising high-performance binder (Alg-Ca 2+ ) is constructed by an in situ interconnection of alginate chains by additive divalent cation with a facile and self-assembly strategy. With the assistance of 3D network, the sulfur/activated carbon composite cathode exhibits a higher rate capability and cycling performance compared to poly(vinylidene fluoride) binder, and the capacity retention is up to 80.6 % after 200 cycles (0.5C, 1C = 1675 mA g −1 ). Additionally, the electrochemical impedance spectroscopy also reveals a lower electrode resistance and better kinetic characteristics with Alg-Ca 2+ as a binder. The improved electrochemical behaviors are assigned to the ability of maintaining the electrode stability due to the excellent mechanical property and amorphous structure. Graphical Abstract
研究领域:
材料科学
·
电化学
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DOI
高影响因子
JOURNAL OF POLYMER RESEARCH
·
2012
·Vol. 19
·期 10
·1-12
·
IF 1.733
Hu Meiping,He Xiaohui,Chen Yiwang,Chen Defu
Novel copolynorbornenes bearing pendant sultone groups (designated as P(BN/SulNBOH) and P(BN/SulNBOMe)) have been successfully synthesized via copolymerization of functionalized norbornenes bearing sultones (designated as SulNBOH and SulNBOMe) with 2-butoxymethylene norbornene (BN). The catalyst system showed high catalyst activity (10 4 g polymer /mol Ni ·h) and the obtained copolymers have high molecular weight and a narrow molecular weight distribution. Furthermore, the achieved copolymers P(BN/SulNBOH) and P(BN/SulNBOMe) were converted into sulfonated copolymers sP(BN/NBOH) and sP(BN/NBOMe). Both sP(BN/NBOH) and sP(BN/NBOMe) membranes displayed low water uptake, high thermal properties, good mechanical properties, and better proton exchange membranes properties. The proton conductivities measured in the hydrated state at 80 °C ranged from 10 −5 to 7.19 × 10 −3 S·cm −1 .
Novel copolynorbornenes bearing pendant sultone groups are synthesized. The achieved copolymers are converted into the sulfonated copolymers. The proton conductivities of the membranes measured in the hydrated state at 80 °C ranged from 10 −5 to 7.19 × 10 -3 S·cm −1 .
研究领域:
材料科学
·
化学工程
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DOI
高影响因子
RSC Advances
·
2015
·Vol. 5
·期 19
·14879-14886
·
IF 3.84
Jinrui Lin,Xiuyuan Ni
Two triarylamine-based polymers were synthesized by oxidative coupling reactions from 3-(N,N-diphenylamino) thiophene (3PAT) and 3-(10H-phenothiazin-10-yl) thiophene (3PTT) monomers, respectively. Distinguished from 3PAT, 3PTT has an additional sulfur atom between the two benzene rings. By using NMR spectroscopy and triarylamine control, the structures of the synthesized polymers were resolved with the aim of revealing the substitution effect. The results present that the substituent plays an important role in the chain propagation. Moreover, the triarylamine-based polymers were investigated for their solubility, thermal stability and electrochemical properties. To evaluate the electrochromism of the two different polymers, we have measured the spectroelectrochemical and electrochromic switching properties from the solution-cast films.
研究领域:
材料化学
·
电化学
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DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2021
·
IF 13.273
Qian Yu,Jingshu Wang,Haibo Li,Ruiqing Li,Suyuan Zeng,Rui Li,Qingxia Yao,Hongyan Chen,Konggang Qu,Yao Zheng
In the electrocatalytic oxygen reduction and hydrogen evolution reactions (ORR/HER), metal-free carbon-based materials presented great potentials as alternatives to Pt because of their flexible adjustability of electronic and geometric properties. The pursuit of high-performance carbons demand for high-level doping, large surface area and high graphitization, but the improvement of the former two aspects would inevitably impair the third one, which seems a contradictive proposition. Herein, by a facile “mix-and-pyrolyze” method, natural DNA was first developed to synthesize N, P, S-tridoped carbons (NPSC) with porous sheet structures, high graphitization, large surface areas and abundant high-quality dopants simultaneously. Thus, the newly-prepared NPSC displays superior alkaline ORR performance comparable to Pt/C together with excellent acidic activity and better stability. Meanwhile, NPSC is one of most active acidic HER catalysts and the best alkaline HER catalyst among carbon counterparts. Density function theory computation reveled the origins of superior performance are attributed to positively charged C sites neighboring to S for ORR and P sites for HER because of DNA-derived advantaged structural features. The as-fabricated rechargeable zinc–air battery based on current tridoped carbon has closed peak power density and specific capacity but much better charge–discharge stability compared with Pt/C.
研究领域:
材料科学
·
电化学
·
计算化学
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DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2019
·
IF 8.355
Yafei Sang,Jianhan Huang
Porous materials with high Brunauer-Emmett-Teller (BET) surface area ( S BET ) and abundant ionic active sites facilitate efficient CO 2 capture and conversion. Herein, a kind of novel benzimidazole-based hyper-cross-linked poly(ionic liquid)s (HPILs) were developed via the hyper-cross-linking strategy and the as-prepared HPILs possessed high S BET (485–780 m 2 /g), plentiful micro/mesoporosity, and abundant ionic active sites. The HPILs showed noteworthy CO 2 uptake (79–143 mg/g at 273 K and 1.0 bar), moderate isosteric heats (32–45 kJ/mol), and acceptable CO 2 /N 2 selectivity (IAST: 23–46). Intriguingly, HPILs-Cl-2 exhibited excellent catalytic activity for CO 2 cycloaddition and 99% of propylene oxide was successfully converted to cyclic carbonates under mild conditions (70 °C, 0.1 MPa CO 2 , 9 h). This synthetic strategy is of great importance for the functionalized hyper-cross-linked polymers and the synthesized HPILs are promising for efficient CO 2 capture and conversion under mild conditions.
研究领域:
材料科学
·
环境科学
·
化学工程
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DOI
高影响因子
Materials Today Energy
·
2022
·
IF 9.257
ZhiLong Han,Han Zhang,Qiang Wu,ShuPing Li,Wei Zhong,RenJie He,ShiJie Cheng,Jia Xie
Silicon-sulfur (Si-S) full cells show significant potential in energy storage due to their high theoretical energy density compared to commercial lithium-ion batteries. Nevertheless, a majority of electrolytes reported for Si-S full cells still cannot meet the requirements of stable long-duration cycling. Herein, we report a high-areal-capacity Si-S full cell consisted with prelithiated SiO, thick Li 2 S-Se 0.05 S 0.95 @pPAN electrode and a trifluorobenzene (F 3 B) modified and diluted high-concentration electrolytes. This novel electrolyte can effectively mitigate the volume expansion of the prelithiated SiO anode and enhance the utilization of active S in the cathode, showing excellent compatibility with electrodes. The assembled Si-S full cell using modified electrolyte displays remarkable cyclability over 100 cycles at 0.1C, exhibiting higher capacity retention (54.0% vs . 17.5%) than the pristine electrolyte without F 3 B. More importantly, a full cell with a thick sulfur cathode (16 mg/cm 2 ) exhibits a superior initial areal capacity of 8.34 mAh/cm 2 and high-capacity retention of 52% after 80 cycles, even at a lean electrolyte condition (2 μL/mg). This work provides guidance for the achievement of high-performance Si-S full cells under lean electrolytes.
研究领域:
材料科学
·
电化学
·
能源存储
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DOI
高影响因子
Journal of Materials Chemistry A
·
2019
·Vol. 7
·期 11
·6533-6542
·
IF 10.733
Yi Cao,Pengjian Zuo,Shuaifeng Lou,Zhen Sun,Qin Li,Hua Huo,Yulin Ma,Chunyu Du,Yunzhi Gao,Geping Yin
Lithium–sulfur batteries based on a solid-state sulfide electrolyte show great promise in achieving the next generation of rechargeable chemical power sources with high energy density and long lifespans. However, the poor solid–solid contacts within the electrode and at the electrode/electrolyte interface, as well as lithium dendrite formation and its interaction with sulfide electrolytes during cycling, are significant challenges that must be overcome before the full potential of sulfide electrolyte-based lithium–sulfur batteries can be realized. Here, we propose a [Li(triglyme)]+[TFSI]− (LiG3) solvent-salt complex with an excellent stabilizing effect towards Li10GeP2S12 electrolyte and demonstrate its application in a high-performance solid-state lithium–sulfur battery. A small quantity of LiG3 added into the cathode material dramatically enhanced the Li+ ion transfer and facilitated the transition from a solid–solid redox reaction involving sulfur species to a solid–liquid dual-phase redox reaction. Simultaneously, we achieved a stabilized solid electrolyte interphase layer at the lithium anode side by the in situ electrochemical reduction of LiG3 complex. The solid-state lithium–sulfur cells demonstrated high specific capacities of 1100 mA h g−1 at 0.2C and 650 mA h g−1 at 1.0C. Furthermore, pouch cells with dimensions of 4 × 5 cm2 were successfully fabricated, indicating the promising practical application of these cells in energy storage.
研究领域:
材料科学
·
能源存储技术
✓ 已验证
DOI
高影响因子
JOURNAL OF MEDICINAL CHEMISTRY
·
2026
·
IF 7.3
Wang Mengqi,Li Xinge,Bai Yan,Luo Wenhan,Gao Yashi,Xie Weilin,Su Chenhe,Chang Junbiao,Zhu Bo
Metabolic
reprogramming relying on abnormal glycolysis
fuels tumor
growth, rendering the rate-limiting glycolytic enzyme PFKL a potential
anticancer target; yet no PFKL inhibitor has entered clinical trials.
Herein, we synthesized a series of S-benzylisothiourea imidazolium
salt derivatives and identified compound 10w , which potently
inhibited breast cancer cell proliferation, suppressed glycolysis,
and induced apoptosis. Drug Affinity Responsive Target Stability (DARTS)
assays revealed PFKL as the direct cellular target of 10w . Surface plasmon resonance (SPR), cellular thermal shift assay (CETSA),
and molecular docking studies confirmed the binding of 10w to PFKL. Enzymatic activity assays further demonstrated that 10w inhibited PFKL activity. Notably, 10w exerted
no obvious effects on glycolysis or glycolytic capacity in PFKL-knockdown
breast cancer cells. In vivo assays showed that 10w exerted significant antitumor efficacy and enhanced the
efficacy of anti-PD-L1 immunotherapy. In conclusion, compound 10w targets PFKL as a promising therapeutic agent for breast
cancer.
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产品关联
DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2026
·
IF 9.2
Yuhong Tang,Ziwei Wang,Fang Liao,Kunpeng Song
Direct seawater electrolysis offers a sustainable route for hydrogen production, but chloride ions cause side reactions and corrosion. Here, we report a heterogeneous (Ni,Bi)-doped MoS 2 electrocatalyst with staggered nanosheets grown on carbon cloth via one-step hydrothermal synthesis. The (NiBi 0.2 )S@MoS 2 catalyst achieves low overpotentials of 112 mV (pure water) and 114 mV (simulated seawater) at 10 mA cm −2 , with Tafel slopes of 61 and 69 mV dec −1 , respectively. It requires only 1.76 V to reach 100 mA cm −2 in two-electrode overall water splitting and operates stably for over 24 h in alkaline seawater. Bi doping promotes electron transfer from Ni and Mo to S sites, optimizing active center configuration, while heterogeneous interfaces enhance H 2 O dissociation and hydrogen chemisorption. This work provides insights for designing efficient, low-cost, and corrosion-resistant electrocatalysts for direct seawater splitting.
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DOI
高影响因子
NANO
·
2024
·
IF 1
Junxiang Mo,Jun Li,Jing Li,Yashan Li
The development of composite materials is a key area of research for enhancing the electrochemical performance of electrode materials. In this study, NiCo–S nanostructured hybrid electrode materials were prepared on nickel foam (NF) by using binary metal–organic frameworks (MOFs) as the sacrificial template through a two-step hydrothermal method. Ni–MOF was then deposited on the surface of NiCo–S/NF through the hydrothermal method and subsequently converted into Ni(OH) 2 through a subsequent alkalization treatment. The duration of the Ni–MOF hydrothermal process was varied as a parameter. NiCo–S@Ni–MOF/NF was prepared through hydrothermal reaction for 6 h, 9 h and 12 h, followed by heating in a 6 M KOH solution at 75 ∘ C for 6 h in a water bath. The electrode materials with the best morphology and electrochemical properties were obtained when the hydrothermal reaction time was 6 h. The optimized electrode had a specific capacity of 2533.2 F ⋅ g − 1 at 1 A ⋅ g − 1 and a capacity retention rate of 60.8% at 10 A ⋅ g − 1 , which indicated good rate performance. Additionally, the electrode material demonstrated excellent cycling stability, with a capacity retention rate of 95.3% after 5000 cycles at 50 mV ⋅ s − 1 . The energy density of the hybrid supercapacitor device assembled from this electrode material was 33.5 Wh ⋅ kg − 1 when the power density was 849.89 W ⋅ kg − 1 at a current density of 1 A ⋅ g − 1 .
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DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2026
·
IF 9.6
Yan Ge,Caiyi Fan,Qiyue Zhang,Hui Yang,Saisai Yuan,Bin Xu
In situ synthesis of S-scheme COF/Ce-MOF heterojunctions significantly enhances photocatalytic H 2 O 2 production under ambient conditions. The directional charge separation, precise band alignment, and synergistic dual active sites of the heterojunction enable efficient, stable, and selective H 2 O 2 generation. The CRM (Ce-MOF/COF) heterojunction delivers an H 2 O 2 yield that is 11.2-fold higher than pristine Ce-MOF and 3.1-fold higher than pure COF. Moreover, the CRM heterojunction maintains excellent productivity over a 6-h reaction period. In situ X-ray photoelectron spectroscopy (XPS) and density functional theory (DFT) analyses revealed not only the elemental composition and chemical states at the heterojunction interface but also the interfacial electronic redistribution and band alignment responsible for the enhanced photocatalytic performance. Specifically, the combined experimental and theoretical results confirmed the presence of strong interfacial coupling, the formation of an internal electric field, and the establishment of an S-scheme charge transfer pathway, all of which contribute to efficient charge separation and the preservation of high redox potentials, thereby enabling superior H 2 O 2 generation activity. Overall, this work not only deepens the understanding of MOF-based photocatalysts but also provides valuable design principles for constructing next-generation heterojunction materials with superior efficiency in photocatalytic H 2 O 2 production for environmental remediation.
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产品关联
DOI
PubMed
高影响因子
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