NEW JOURNAL OF CHEMISTRY
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2024
·Vol. 48
·期 36
·16107-16118
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IF 2.7
Zhoufeng Wang,Bolin Wang,Yingying Liu,Xiubo Long,Wenlong Yao
A series of linear block polymers and random polymers were synthesized by interfacial polycondensation using two bisphenols with similar structures, bisphenol S (BPS) and bisphenol A (BPA), and terephthaloyl chloride and isophthaloyl chloride. Random polymers and block polymers with the expected topology were structurally characterized by 1H NMR, FTIR, GPC, WAXD, and Raman spectroscopy. The results demonstrated that there was no significant difference in the thermal stability of the block and random polyarylates, which was due to the fact that the covalent bonds of the linked monomers did not change substantially, and the bond energies were the same. However, due to the alteration of the molecular sequence structure, the block polymer exhibited a lower glass transition temperature, a pronounced melting peak, and better solubility. With physical cross-linking points consisting of microcrystalline phases formed by the relatively regular molecular chain structure, the block polyarylates exhibited a higher modulus of elasticity than the random polyarylates. This illustrated that it is possible to prepare new functional polyarylates without changing the monomer composition, but only by manipulating the reaction process.
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高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2024
·
IF 20.2
Xuli Hu,Zhen Zhang,Zhenyao Li,Yushan Wu,Wei Wei,Yao Wang,Junchen Xu,Mingyue Ding
Regulating oxidation state of Cu-based chalcogenides catalysts during electrolysis is of great significance for efficient CO 2 electrochemical reduction reaction (CO 2 RR) to methanol, which still remains a dramatic challenge. Herein, we construct a heterogeneous Cu 3 VS 4 /CuS electrocatalyst (denoted as CuV x S), in which the in-situ growing Cu-S-V bonds avoid the accumulated electrons on oxidized Cu sites and inhibit the deep reduction of CuS to metallic Cu during electrolysis, maintaining stable and abundant reactive Cu + /Cu 2+ species to promote CO 2 RR performance to methanol. By this design, the CuV 0.1 S catalyst achieves an ultrahigh methanol selectivity of 79.8 %. In-situ FTIR measurement reveals that the synergistic effect of Cu + /Cu 2+ species and Cu-S-V bonding facilitates the *CO adsorption and the subsequent *CO hydrogenation process, which improve the generation of *CHO and *OCH 3 intermediates for enhanced methanol selectivity. This work provides a new insight into stabilizing high oxidation state of Cu-based electrocatalyst to maintain sufficient active sites for CO 2 RR.
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ChemSusChem
·
2025
·
IF 6.6
Umar Farooq,Boyang Han,Usman Ali Shah,Fa Yang,Sheng Li,Yanping Song,Ali Hassan,Zhengquan Li,Jin Wang
The efficiency of earth-abundant kesterite Cu2ZnSn(S,Se)4 (CZTSSe) solar cells has been lagging behind the Shockley-Queisser limit primarily due to the presence of deep-level defects. These deep-level defects cause critical issues such as short carrier diffusion length, significant band tailing, and a large open-circuit voltage (VOC) deficit, ultimately leading to low device efficiency. To address these issues, we propose a post-fabrication defect healing strategy by dip-coating the CZTSSe film in dimethylformamide (DMF) solvent. Immersing the absorber layer in DMF (a polar solvent), neutralizes CuSn antisite defects through chemical bonding and facilitates the formation of a dense, smooth CZTSSe film with larger grain size. Deep-level transient spectroscopy revealed a remarkable increase in carrier diffusion length from 93 nm (control device) to 142 nm (champion device), confirming the beneficial effect of solvent-assisted post-treatment on mitigating CuSn antisite defects. The reduction in defect densities led to a decrease in VOC deficit by up to 289 mV, accompanied by an increased champion device efficiency of 11.4%. This work highlights the huge potential of the DMF post-treatment strategy for defect healing in CZTSSe solar cells.
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PubMed
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2024
·
IF 9.4
Jiaxue Zhang,Ben Hu,Acheng Zhu,Yiming Qi,Yuyang Wang,Shichang Han,Tianyu Zhu,Jie Xu
Poly(ethylene oxide) (PEO)-based electrolytes are widely used for building solid-state lithium–sulfur (Li–S) batteries but suffer from poor lithium-ion (Li + ) transportation kinetics. Here, a lithium-sulfonated covalent organic framework (TpPa-SO 3 Li) was synthesized and functionalized as a Li + pump in a PEO-based solid-state electrolyte to fabricate robust Li–S batteries. The designed TpPa-SO 3 , Li with its porous skeleton and abundant lithium sulfonate groups not only provided iontransport channels but also enhanced the fast migration of Li + . The PEO composite electrolyte containing 5 %-TpPa-SO 3 Li exhibited a notable ionic conductivity of 6.28 × 10 −4 S cm −1 and an impressive Li + transference number of 0.78 at 60 °C. As a result, Li–Li symmetric batteries with the optimized PEO/TpPa-SO 3 Li composite electrolyte stably cycled for 300 h, with a minimal overpotential of only 100 mV at 0.5 mA cm −2 . Moreover, the customized solid-state Li–S batteries based on PEO/TpPa-SO 3 Li were stable for 600 cycles at 60 o C with a high Coulombic efficiency of approximately 98 %. This study provides a promising strategy for introducing covalent-organic-framework (COF)-based Li + pumps to build robust solid-state Li–S batteries.
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PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2025
·
IF 8.2
Lei Zhao,Zilong Zhang,Tianyuan Zhang,Xiang Wang,Huanjun Peng,Jingdong Peng
The Fenton reaction in advanced oxidation processes is an ideal pathway for the generation of highly reactive hydroxyl radicals (•OH). However, its application in organic wastewater treatment is limited due to the requirement for acidic pH conditions and the additional introduction of H2O2 and Fe2+. In this study, FeOOH–CN/Ni(OH)2 composites were constructed as photocatalysis-self-Fenton catalysts by the amorphous FeOOH, which was uniformly anchored onto the surface of pure g-C3N4 (carbon nitride (CN)), and Ni(OH)2 was assembled on top. In this process, FeOOH–CN/Ni(OH)2 achieved self-sufficiency in H2O2 production while enabling efficient degradation of tetracycline hydrochloride (TCH) over a wide pH range, with a degradation ratio of up to 98.82%, and a first-order reaction rate constant (k) was determined to be 0.04925 min–1, representing a 10.15 times enhancement compared to the pristine CN. A reasonable S-scheme heterojunction charge migration mechanism was demonstrated based on valence-band X-ray photoelectron spectroscopy (VB-XPS), atomic force microscopy (AFM) equipped with a Kelvin probe force microscope, and density functional theory (DFT) theoretical calculations. Furthermore, degradation experiments demonstrated that the catalyst possesses remarkable degradation efficiency for other contaminants as well. On one hand, this significant improvement can be attributed to the formation of an S-scheme heterojunction between Ni(OH)2 and CN, which not only increased the specific surface area of the composite but also remarkably enhanced the separation and transfer efficiency of photogenerated charges. On the other hand, the synergistic effect between Ni and Fe effectively facilitated the activation of H2O2 and promoted the cycling of Fe3+/Fe2+. This study provided an efficient visible-light-driven photocatalysis-self-Fenton system, offering novel perspectives for enhancing Fenton-based processes and advancing the application of Fenton reactions in the treatment of organic wastewater.
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PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Bing Du,Yunhan Zhao,Fuzhou Wen,Zhen Tan,Haipeng Yang,Zhaotian Liang,Guangliang Gary Liu
Developing cost-effective transition metal (TM) catalysts for removing formaldehyde (HCHO) via room temperature thermocatalytic oxidation is gaining attention for its potential benefits in energy savings and health protection. In this work, we synthesized a nitrogen-doped carbon fiber catalyst with atomically dispersed cobalt (p-Co 1 @NCF) using a novel poly(ionic liquid)s-assisted (PILs-assisted) method. Structural analysis confirmed that PILs play a key role in forming stable Co N 4 sites, achieving a cobalt loading of 2.5 wt%. The p-Co 1 @NCF catalyst demonstrated outstanding performance, achieving 95 % HCHO removal at 100 ppm and RT, with a specific activity of 0.60 mol HCHO ·mol Co −1 ·h −1 and stable decomposition over 96 h. Mechanistic studies indicated that the catalyst's efficiency stems from its ability to adsorb and activate oxygen (O 2 ) molecules. This work highlights the potential of PILs-assisted synthesis in creating effective single-atom TM catalysts and represents an important advance in RT thermocatalytic HCHO removal.
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高影响因子
RSC Advances
·
2019
·Vol. 9
·期 16
·9253-9259
·
IF 3.049
Yuxuan Zhang,Saisai Gai,Zhonghui Wang,Shuang Wang,An Sui,Xi-Ming Song
A novel poly(arylene ether) with azo-coupled cobalt phthalocyanine in the side chain (PAE-azo-CoPc) was prepared by 1,2-benzodinitrile, anhydrous cobaltous chloride and a novel azobenzene-containing poly(aryl ether) (PAE-azo-DCN) via a nucleophilic substitution polycondensation based on a novel bisfluoro monomer, 4-[(3,4-cyanophenyl)diazenyl]phenyl-2,6-difluorobenzoate. The obtained polymers were characterized and evaluated by FT-IR, 1H NMR, DSC and TGA. PAE-azo-CoPc exhibited higher glass transition temperature and better thermal stability than PAE-azo-DCN because of the introduction of cobalt phthalocyanine groups. The results of Z-scan measurements demonstrated that PAE-azo-CoPc showed reversible saturable absorption and positive refraction, and PAE-azo-DCN showed saturable absorption and negative refraction. By calculation, PAE-azo-CoPc exhibited larger third-order nonlinear optical susceptibilities than that of PAE-azo-DCN. The results of optical limiting measurements demonstrated that the PAE-azo-CoPc exhibited an excellent optical limiting response.
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高影响因子
FUEL
·
2025
·
IF 7.5
Wenji Liang,Junwei Shi,Zhenhua Qin,Jinguang Cai,Yun He,Jianfen Li
Exploring efficient and durable non-noble metal catalysts toward oxygen reduction/evolution reaction (ORR/OER) is of practical significance in advancing Zn-air batteries. Herein, we introduce a three-dimensional (3D) bifunctional electrocatalyst (Fe/Ni@NSC) consisting of N, S-dual doped mesoporous carbon nanosheets/carbon nanotubes embedded with abundant FeS/FeNi nanoparticles and Fe/Ni-N x sites by integrating rod-like ZIF-L@S-g-C 3 N 4 with Fe/Ni-phen complex and subsequent pyrolysis. The 3D structure not only offers a high surface area for active sites but also accelerates O 2 transport/charge transfer. Leveraging the synergistic effect of the 3D porous carbon network and multiple active sites, Fe/Ni@NSC exhibited outstanding activities in both ORR (half-wave potential, 0.868 V) and OER (overpotential, 317 mV at 10 mA cm −2 ), indicating a low potential gap of 0.679 V, outperforming the Pt/C + RuO 2 benchmarks (0.695 V). The Zn-air batteries based on Fe/Ni@NSC achieved a promising open circuit voltage (1.47 V), peak power density (172.59 mW cm −2 ), as well as long-term cycling stability (370 h). Furthermore, density functional theory (DFT) calculations also demonstrated that the interfacial electronic interaction between FeS and FeNi effectively boosted the bifunctional catalytic performance for ORR/OER. This study lays the foundation for designing low-cost and efficient 3D structure non-noble metal catalysts for more energy conversion and storage devices.
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高影响因子
APPLIED SURFACE SCIENCE
·
2026
·
IF 6.6
Mengqin Zhou,Xiu Wan,Xia Zhang,Xiaoxuan Wang,Shixiong Hao,Lei Li,Chunru Cheng,Jian Peng,Yongfan Wang
Green synthesis of OV-rich TiO 2- x using L-cysteine, avoiding hazardous H 2 /NaBH 4. • Construction of hollow BiOI/ TiO 2- x S-scheme heterojunction via in-situ assembly. • Hollow structure, OVs, and S-scheme synergistically boost light harvesting & charge separation. • 94.24% TC removal in 120 min; kinetic constant 3.83–7.97 times higher than controls. • •O 2 − and h + as dominant active species; S-scheme mechanism confirmed. Addressing the challenge of tetracycline (TC) contamination in aquatic environments, this work reports a high‑performance S‑scheme photocatalyst fabricated via a green and sustainable strategy. Oxygen vacancy (OV)‑rich TiO 2- x hollow microspheres were prepared by a hard‑template method using L‑cysteine as a green reductant, followed by in‑situ hydrothermal deposition of BiOI nanosheets. The optimized BiOI/TiO 2- x -5% composite exhibits 94.24% TC degradation within 120 min under visible light, with a reaction rate constant 3.83, 3.67, and 7.97 times higher than those of pristine TiO 2 , TiO 2- x , and BiOI, respectively. The boosted performance stems from the synergistic effects of the hollow structure, which enhances light harvesting and mass transfer, and the OV‑mediated S‑scheme heterojunction, which greatly suppresses charge recombination while retaining strong redox potentials. Mechanistic investigations confirm •O 2 − and h + as the dominant active species. This work provides a promising paradigm for designing efficient defect‑mediated hollow heterojunctions toward sustainable antibiotic wastewater remediation. Download: Download high-res image (164KB) Download: Download full-size image
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高影响因子
APPLIED SURFACE SCIENCE
·
2026
·
IF 6.6
Ningyu Guo,Yingqiang Zhao,Peng Zhao,Qinxing Xie
A Zn-Co bimetallic ZIF-derived N-doped porous carbon with CNT network is constructed. • Acid etching tailors hierarchical porosity and exposes catalytic metal sites. • The conductive CNT framework accelerates electron/ion transport. • Strong polysulfide immobilization and rapid redox kinetics are achieved. • High capacity and stable cycling are maintained under lean electrolyte. Efficient sulfur hosts with strong polysulfide confinement and fast redox kinetics are essential for high-performance lithium-sulfur batteries. Herein, a Zn-Co bimetallic ZIF-derived multifunctional porous carbon with in-situ grown carbon nanotubes (CNTs) is constructed via controlled carbonization followed by acid etching. The resulting ZIFCA material features a hierarchical porous architecture with Zn/N-derived polar sites, a conductive CNT network, and Co-based catalytic nanodomains coupled with defect-rich carbon interfaces. These structural characteristics synergistically enhance polysulfide adsorption and accelerate sulfur redox conversion, thereby suppressing the shuttle effect and improving reaction kinetics. As a sulfur host, ZIFCA/S delivers a reversible capacity of 1035 mAh g −1 after 200 cycles at 1.0C, and retains around 700 mAh g −1 at 5C. Notably, under lean electrolyte conditions (E/S = 5.7 μL mg −1 ), ZIFCA/S maintains a capacity of 903 mAh g −1 after 110 cycles with an areal capacity of about 2.79 mAh cm −2 . This work highlights the effectiveness of integrating conductive and catalytic functionalities in ZIF-derived carbon frameworks for advanced Li-S batteries. Download: Download high-res image (162KB) Download: Download full-size image
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Advanced Composites and Hybrid Materials
·
2026
·Vol. 9
·期 1
·72
·
IF 21.8
Wang Aoxuan,Fang Yuan,Wang Xianfeng,Zheng Dapeng,Yang Haibin,Cao Xiangpeng,Zhang Zuhua,Xing Feng
With the increasing use of aluminum-rich (Al-rich) supplementary cementitious materials (SCMs), clarifying the roles of aluminum in C-A-S-H gels and in surplus Al-rich phases is critical for assessing chloride resistance. An Al-rich C-A-S-H material was synthesized under precise stoichiometric conditions and exposed to accelerated chloride ingress for up to 120 days. The evolution of phase assemblage, gel chemistry and physicochemical properties was monitored during the exposure. A time-dependent model was developed to describe chloride ingress and binding. Chloride ion binding in the Al-rich C-A-S-H occurred through both chemical solidification in Friedel’s salt and physical adsorption, with physical adsorption on C-A-S-H surfaces being dominant, accounting for approximately 60–70% of total bound chloride. The Al-rich phase primarily acted as a “reservoir,” releasing Ca 2+ and Al 3+ which facilitated the formation of Friedel’s salt and promoted the subsequent formation of C-A-S-H gel. Furthermore, the subsequent re-incorporation of aluminum into the C-A-S-H gel under chloride leading to a partial transformation from cross-linked to non-cross-linked silicate chains. This structural evolution is accompanied by a marked micromechanical degradation, with the Young’s modulus decreasing from 11.1 to 6.9 GPa under highly accelerated, severe exposure conditions. Overall, these results provide a time-resolved mechanistic picture of how C-A-S-H gel and surplus Al phases co-evolve under chloride attack, offering a new basis for the durability design of SCM-rich cementitious composites.
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高影响因子
APPLIED SURFACE SCIENCE
·
2026
·
IF 6.6
Ruijie Che,Yubo Pan,Yining Zhu,Xiaojing Long,Jining Li
Visible-light purification of contaminated waters is often constrained by rapid charge recombination and strong matrix interference, especially in complex real wastewaters. Here, we upcycled rice-noodle waste into carbon quantum dots (CQDs), and integrated them with ZnIn 2 S 4 to construct three-dimensional CQDs/ZnIn 2 S 4 nanoflowers. Optimising the CQDs loading at 3 wt% enabled the composite to remove 50 mg L −1 of pollutants within 120 min under visible irradiation, achieving 99.3% Cr(VI) reduction and complete methylene blue (MB) degradation with apparent first-order rate constants of 0.0192 min −1 (Cr(VI)) and 0.0223 min −1 (MB). The photocatalyst resisted matrix inhibition, with removals reaching 93.1% (Cr(VI)) and 91.6% (MB) in wastewaters, and above 95% in tap, lake and river waters; catalytic activity was retained above 95% after five reuse cycles. Valence-band X-ray photoelectron spectroscopy (VB-XPS) and density functional theory (DFT) band alignment analysis, together with transient photocurrent response, electrochemical impedance spectroscopy (EIS), photoluminescence (PL)and electron paramagnetic resonance (EPR) and radical-trapping experiments collectively verified an S-scheme CQDs/ZnIn 2 S 4 heterojunction with an interfacial built-in electric field that drives vectorial charge separation and preserves highly reductive electrons and oxidative holes at spatially distinct sites. This waste-to-resource strategy couples low-cost carbon precursors with interfacial band engineering to deliver a scalable, visible-light-driven platform for simultaneous detoxification of inorganic (Cr(VI)) and organic dye pollutants in realistic treatment scenarios.
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高影响因子
危险品化学品经营许可证（带存储）