INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2026
·
IF 8.7
Yuxuan Guo,Yueyuan Xu,Yueqi Zhou,Canming Hu,Chengli Ding,Abulikemu Abulizi
The use of photogenerated carriers to regulate interfacial photo-redox reactions and improve the efficiency of photocatalytic applications has become a hot topic in photocatalyst research. We proposed a novel strategy, which enables efficient charge separation by uniformly deposition CuS/Bi₂S₃ nanoparticles on three-dimensional porous cellulose-derived carbon aerogel (CA), and utilizes highly active holes excited by ultraviolet-visible light to drive surface reactions, demonstrating excellent performance in the photo-oxidative degradation of methylene blue (MB) organic pollutants. The samples were characterized and structurally tested using techniques such as X-ray fluorescence spectroscopy, X-ray diffraction analysis, scanning electron microscopy, and a BET specific surface area analyzer. Under visible light irradiation, the composite material demonstrated remarkable degradation efficiency for methylene blue, achieving 98.98% removal within 80 min while maintaining over 87.48% of its initial activity after five consecutive reaction cycles. The enhanced photocatalytic performance is attributed to the fact that the carbon aerogel matrix provides a 3D framework with high surface area to effectively disperse catalyst nanoparticles and organic dye molecules near the active site, its conductive network facilitates efficient electron transport, and the porous structure can optimally separate photogenerated electron-hole pairs by enhancing light absorption through internal scattering mechanisms. We identified that superoxide anions (·O₂ − ) and hydroxyl radicals (·OH) act as the primary active species in the degradation process through radical trapping experiments. This study not only presents a high-performance, environmentally friendly catalyst for wastewater treatment but also offers valuable design principles for developing biomass carbon-based photocatalytic systems with S-scheme heterojunctions.
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APPLIED SURFACE SCIENCE
·
2026
·
IF 6.6
Gujie Yao,Xilai Wang,Yanyan Feng,Xiaoqing Wang,Da Jin,Xue you Wen,Zhixiang Fu,Tianxiang Guo
A promising dual-coping Ag,S-Cu x O/Cu foam electrocatalyst was synthesized for CO 2 RR. • The synergistic effect of Ag and S for CO 2 RR toward HCOOH and CH 3 OH was elucidated. • The Ag-S synergistic mechanism governing HCOOH and CH 3 OH formation was revealed. The electrochemical reduction of CO 2 into value-added fuels such as formic acid and methanol presents a promising approach to mitigating climate change, yet it is constrained by the rational design of efficient electrocatalysts and the understanding of structure-efficiency relationships. Here, a highly efficient Ag,S-Cu x O/Cu catalyst was developed via a facile in situ dual-doping strategy, incorporating Ag and S onto pre-oxidized copper foam. Comprehensive multimodal characterization (SEM, EDS, XRD, XPS, AES) and electrochemical measurements (LSV, EIS, GC, 1 H NMR) were conducted to elucidate the catalyst’s structural properties and CO 2 reduction performance. Results indicate that Ag/S dual doping synergistically enhances catalytic activity by reducing solution mass transfer resistance through improved catalyst nanostructures and expanding the electrochemical active surface area (ECSA). Ag incorporation effectively suppresses the competitive hydrogen evolution reaction (HER), while S incorporation lowers charge transfer resistance ( R ct ). Compared with the Cu x O/Cu foam catalyst, the Ag,S-Cu x O/Cu foam catalyst exhibits increased partial current densities for formic acid (HCOOH) and methanol (CH 3 OH) by 17.09 and 5.70 mA·cm −2 , respectively. Furthermore, the reaction pathways for the electrochemical conversion of CO 2 to HCOOH and CH 3 OH are systematically elucidated. This study proposes a dual-doping strategy to achieve sustainable CO 2 electroreduction and delivers fundamental insights into the external parameters that govern the selective formation of high-value products. Download: Download high-res image (142KB) Download: Download full-size image
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Surfaces and Interfaces
·
2026
·
IF 6
Balamurali Ravichandran,Naresh Narayanan,Narayanamoorthy Bhuvanendran,Huiyuan Liu,Weiqi Zhang,Huaneng Su
PtCo nanoparticles anchored on P,S,N-doped porous carbon nitride enables strong ORR activity. • Hierarchical porosity and heteroatom doping enhance Pt dispersion and mass transport. • PtCo/P,S-HPCN shows 2.37 mA cm ⁻2 Pt ⁻1 activity and superior ORR durability. • Outperforms commercial Pt/C in both RDE and single-cell PEMFC performance tests. • Robust carbon nitride support resists corrosion in acidic, high-potential environments. Maximize the Pt utilization with high durability and efficient mass transport is crucial on the electrocatalyst design for the practical low-temperature fuel cell applications. In this work, we designed an ultrafine PtCo alloy nanoparticles distributed uniformly on phosphorus and sulfur co-doped hierarchical porous carbon nitride (PtCo/P,S-HPCN), synthesized via hydrothermal treatment, pyrolysis, and chemical reduction. The heteroatom-doped carbon nitride framework exhibits superior chemical stability compared to conventional carbon materials, while its hierarchical porous structure facilitates uniform dispersion of ultrafine PtCo nanoparticles (∼1.8 nm) and accelerates reactant transport. Synergistic effects from graphitic/pyridinic nitrogen species, P/S doping, and Pt–Co alloying modulate the electronic structure of Pt, optimizing *OOH binding and enhancing ORR kinetics. The optimized catalyst delivers excellent performance in acidic media, achieving a high half-wave potential (0.88 V vs. RHE), a mass activity of 0.91 mA µgPt⁻ 1 , and a specific activity of 2.37 mA cmPt⁻ 2 at 0.85 V. Remarkably, it retains 73% of its initial mass activity and loses only 11 mV in half-wave potential after 5000 durability cycles. In practical PEMFC tests, the PtCo/P,S-HPCN cathode achieves a peak power density of 0.42 W cm⁻², surpassing commercial 40 wt% Pt/C. This study demonstrates a promising strategy for designing durable, low-Pt and high activity catalysts for PEMFC applications. Download: Download high-res image (217KB) Download: Download full-size image
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CHEMICAL ENGINEERING SCIENCE
·
2026
·
IF 5.1
Kang Zhong,Shuting Li,Jinman Yang,Chentao Zhu,Quan Zhang,Yanhua Song,Peipei Sun,Xingwang Zhu,Huaming Li,Hui Xu
Photocatalytic CO 2 reduction to high-value chemicals is an effective route to address energy and environmental issues. However, it remains challenging to develop semiconductor photocatalysts with high activity and efficient charge separation. Herein, a novel hm-C 4 N 3 /TiO 2 S-scheme heterojunction was synthesized, and its interfacial charge transfer mechanism was revealed by in-situ XPS, KPFM and the density functional theory calculations. The construction of the S-scheme heterojunction establishes a strong internal electric field (IEF), which significantly accelerates the separation and directional migration of photogenerated carriers and boosts the reaction kinetics. The optimized photocatalyst delivers a CO production rate of 15.20 μmol g −1 h −1 , about 5 times that of pure TiO 2 . Gibbs free energy calculations confirm that the heterojunction reduces the reaction energy barrier and provides a thermodynamic advantage for CO 2 to CO conversion. This study offers a feasible strategy for designing half-metallic carbon nitride-based S-scheme heterojunctions toward efficient photocatalytic CO 2 reduction.
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CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Chen Huang,Dongchao Qiu,Xiang Li,Lixia Wu,Fanglian Huang,Zhangyan Ye,Youyun Zeng
Enzyme-mediated bacterial active endocytosis enhanced the permeability of NG/NO to biofilms. • The chemical structures of Schiff base and NONOates provided dual proton-responsive of gas release. • NO induces S-nitrosylation of PDEs in S. mutans 。, thereby reducing lactate production. Dental caries in permanent teeth have remained one of the most prevalent oral diseases over the past three decades, with their global incidence exhibiting a steady upward trajectory. Streptococcus mutans ( S. mutans ) colonization on dental surfaces, coupled with its acidogenic metabolic activity, constitutes a primary etiological factor in caries pathogenesis. In this work, a NO-loaded polysaccharide nanogel, NG/NO was developed to address this issue. Dextran component of the NG/NO demonstrated selective targeting capabilities, promoting active internalization by S. mutans through enzyme-mediated endocytosis. This mechanism significantly enhanced biofilm penetration of the NG/NO (>70% biofilm penetration depth) within a 4-h exposure. The Schiff base bonds and N-diazeniumdiolates conferred the dual-acid-responsive NO release kinetics, achieving mM concentration of NO liberation within several minutes under cariogenic conditions (pH 4.5–5.5), thereby triggering rapid biofilm disrupting (>80% biomass reduction). Moreover, lower concentration of NO was shown to inhibit glycolysis and synthesis of lactic acid in S. mutans , thus improving acidic environment and demonstrating the potential to prevent enamel demineralization and dental caries. In conclusion, the NG/NO has promising applications in daily oral hygiene maintenance and caries prevention.
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SENSORS
·
2026
·Vol. 26
·期 11
·3569
·
IF 4
Xiao Liu,Pengbo Zhu,Hao Ren,Yao Wang,Jun Li,Yan Zhang,Qiao Wang,Soo Wohn Lee,Laurence A. Belfiore,Mikhail Artemyev,Jianguo Tang
HighlightsWhat are the main findings?We have successfully fabricated a novel fluorescent cotton fabric (FCF) sensor grafted with hydrophilic MPA-stabilized Cu-In-Zn-S core–shell QDs.The FCF sensor demonstrates a PL response when in contact with aqueous solutions containing various anions, including Br−, Cl−, F−, PO43−, and OH−.What are the implications of the main finding?This preparation method is simple, reproducible, and cost-effective, with broad application prospects.Negatively charged molecules and anions are widely present in the natural environment and can pose a threat to aquatic life, affecting their survival and reproduction. As the understanding of the hazards of negatively charged molecules and ions deepens, the need for real-time monitoring governs the development of highly sensitive and convenient sensing materials. Here, highly luminescent Zn-Cu-In-S core–shell colloidal quantum dots were grafted onto cotton fabric to produce a fluorescence cotton fabric (FCF) optical sensor demonstrating photoluminescence response to the presence of several anions in water, such as phosphate (PO43−), hydroxide (OH−), fluoride (F−), chloride (Cl−), or bromide (Br−). After contact with water solutions containing these anions, PL output from FCF remarkably decreases, with specific functional dependence on the concentration of the selected anions. The fluorescent fabric sensing material is easy to operate, achieving real-time detection of negatively charged groups and showing great potential for application in environmental monitoring.
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Polymers
·
2026
·Vol. 18
·期 10
·1202
·
IF 5.8
Liangcong Fan,Peisen Xu,Hongyu Wang,Zhifeng Cai,Juan Zuo,Cong Liu,Xiaohang Tan,Fengxiong Long,Hao Luo,Qingqing Gao
A novel transition-metal-free alkyne–thiol click polymerization with 100% atom economy is reported. Using t BuOLi as a catalyst at 80 °C, the polymerization efficiently yields poly(vinyl sulfide)s (PVSs) with molecular weights up to 11,800 g/mol and yields up to 91%. These sulfur-rich polymers exhibit high thermal stability ( T d up to 293 °C) and high refractive indices (1.8375–1.6383) across the visible range. By integrating abundant sulfur coordination sites with aggregation-induced emission (AIE) properties, the PVS aggregates serve as high-performance fluorescent chemosensors. The sensor enables exclusive, sensitive trace detection of Pd 2+ and Au 3+ with remarkable anti-interference capability and pH robustness (pH 1–7). Notably, an ultrafast response (1–2 min) for Pd 2+ is achieved, with limits of detection (LOD) reaching 7.11 × 10 −7 M for Pd 2+ and 1.06 × 10 −6 M for Au 3+ , and corresponding limits of quantification (LOQ) reaching 2.37 × 10 −6 M and 3.53 × 10 −6 M, respectively. This methodology offers a sustainable route to heteroatom-rich macromolecules for next-generation optical engineering and environmental monitoring.
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JOURNAL OF ELECTROANALYTICAL CHEMISTRY
·
2026
·
IF 4.6
Jingfeng Cao,Xudong Leng,Jieyu Yang,Xuekun Jin,Fengjuan Chen,Haiming Duan,Biaobing Cao
The PtFeNC-S catalyst was obtained assisted bysodium thiosulfate. • PtFeNC-S exhibits excellent performance higher than that of Commercial PtC. • It can be attributed to the synergistic effects of FeN x sites, and C-S-C. • The catalytic mechanism is further clarified by DFT calculations. Reducing Pt loading is a promising strategy to scale up fuel cells and water electrolysis by optimizing catalyst design and active site distribution, achieving high efficiency with minimal precious metal. A Pt-loaded cathode catalyst (PtFeNC-S) was synthesized, in which Pt nanoparticles were uniformly distributed on the FeNC-S substrate using sodium thiosulfate, and it exhibited excellent oxygen reduction reaction (ORR) performance. TEM analysis reveals uniform dispersion of Pt nanoparticles (Pt NPs) with sizes of 2–5 nm, while XPS confirms the retention of FeN x active sites. The optimized PtFeNC-S catalyst exhibits a half-wave potential (E 1/2 ) of 0.86 V, 20 mV more positive than that of Commercial PtC (0.84 V), together with a kinetic current density of 11.95 mA cm −2 at 0.85 V and a Pt mass activity of 203.64 mA mg Pt −1 , substantially higher than that of Commercial PtC (3.92 mA cm −2 and 62.19 mA mg Pt −1 , respectively). Moreover, PtFeNC-S retains 88.8% of its initial current after 24 h of continuous operation, compared with 81.7% for Commercial PtC, and exhibits only a 13 mV decrease in E 1/2 after 10,000 accelerated durability cycles, lower than the 18 mV decrease observed for Commercial PtC. The high performance arose from both the uniform dispersion of Pt nanoparticles and the presence of C-S-C sites, along with FeN x sites that added further active centers for ORR. Density functional theory (DFT) calculations indicate that the downshift of d-band center for Pt was induced by synergistic interaction of Pt and FeN x sites, and S doping, thereby promoting OH desorption and augmenting ORR performance. The study presents a straightforward approach for synthesizing Pt catalysts that exhibit promising capabilities. Download: Download high-res image (251KB) Download: Download full-size image
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LANGMUIR
·
2026
·
IF 4.4
Zong Jiaxiang,Tang Yihan,Han Jiangang,Wu Guangyu,Xing Weinan
Designing stable photocatalysts with
optimized charge transfer
and surface kinetics remains a critical challenge for achieving solar-driven
CO 2 reduction. In this work, an amorphous FeOOH/covalent
organic frameworks (COFs) S-scheme heterojunction was rationally constructed
via a solvent-assisted strategy. The integration of defect-rich amorphous
FeOOH with the porous COFs matrix not only maximizes the interfacial
contact but also induces a strong internal electric field (IEF), enabling
directional charge migration and efficient carrier separation. The
optimized amorphous FeOOH/COF3 heterostructure exhibits a CO evolution
rate of 200.98 μmol·g –1 ·h –1 with a selectivity as high as 93.6% under visible-light irradiation,
outperforming the individual components. Spectroscopic and photoelectrochemical
studies confirm that the built-in electric field can effectively regulate
the formation of an S-scheme charge transfer pathway, which retains
the highly reducing electrons on COFs while maintaining the excellent
oxidation capability of FeOOH. This work highlights the crucial roles
of amorphous/crystalline interface engineering and IEF modulation
in constructing high-performance COFs-based photocatalysts and provides
new insights into designing efficient S-scheme systems for solar-driven
CO 2 conversion.
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ACS Sustainable Chemistry & Engineering
·
2026
·
IF 7.6
Sun Ruize,Liu Xiaonan,Chen Jingge,Chen Zhangguo,Zhou Jicheng,Xu Wentao
Propane direct dehydrogenation (PDH) is an important way for the high-value utilization of propane (C 3 H 8 ). However, the conventional thermal catalytic reaction process is limited by the thermodynamic equilibrium of the strong endothermic reaction, and usually needs to be operated at high temperature, which makes it difficult to balance high conversion and high selectivity. In this study, a new method of microwave catalytic dehydrogenation of C 3 H 8 to propylene (C 3 H 6 ) at low temperature and high efficiency was proposed, and Pt-ZnO/S-1 + SiC microwave catalyst was developed. It was found that microwave significantly improved the conversion and selectivity of the catalyst, and the reaction was carried out efficiently at lower temperatures. Under low temperature microwave catalysis (MCRM) at 450 ° C, the conversion of C 3 H 8 was as high as 46.4%, and the selectivity of C 3 H 6 was as high as 99.3%, which were significantly better than 18.4% conversion and 95.1% selectivity under conventional thermal catalysis (CRM). Further study shows that the microwave action reduces the apparent activation energy of the catalyst from 75.5 kJ·mol −1 under CRM to 48.7 kJ·mol −1 under MCRM. This study provides a new strategy for the low-temperature and efficient conversion of low-carbon alkanes such as C 3 H 8 and provides a new idea for the application of microwave catalytic technology in other catalytic reactions.
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CHINESE JOURNAL OF POLYMER SCIENCE
·
2026
·
IF 4.6
Wang Jing,Wang Shuai,Tong Hai-Xu,Liu Na,Wu Zong-Quan
The helical structures found in biological systems, such as DNA, have inspired significant research interest in artificial helical polymers, owing to their strong potential for applications including chiral recognition and resolution, asymmetric catalysis, and other related areas. However, the preparation of single-handed helices from achiral starting materials, as well as the exploration of their chiral resolution behavior, continues to represent a considerable challenge. In this work, we present the rational design and synthesis of optically active helical poly(phenyl isocyanide)s through helix-sense selective polymerization (HSSP) of achiral phenyl isocyanide monomers, catalyzed by enantiopure Pd(II) complexes bearing S - or R -configured ligands (Pd(II)/L S or L R ). The polymerization exhibits living and controlled characteristics, allowing for the precise modulation of molecular weights ( M n ) with exceptionally narrow distributions ( M w / M n ). The resulting polymers exhibit intense optical activity and demonstrate outstanding performance in chiral recognition. Specifically, these chiral materials are utilized as a chiral stationary phase (CSP), which can separate various racemates including α -methylbenzylamine, cobaltic acetylacetonate, and 2-hydroxy-2-phenylacetophenone. Additionally, when applied as a chiral crystallization agent, the polymer enabled the resolution of racemic Z -Alanine via enantioselective crystallization, yielding an enantiomeric excess ( ee ) as high as 81%.
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MICROCHIMICA ACTA
·
2026
·Vol. 193
·期 8
·550
·
IF 5.4
Ma Guozhi,Wang Xuan,Cai Jihai,Wang Xiaoying
The rapid detection of Salmonella is an essential precautionary measure to ensure food safety and prevent foodborne illness. In this study, based on the specific binding between mannan oligosaccharides (MOS) and type I fimbriae of Salmonella typhimurium ( S. typhimurium ), an efficient sensing strategy was developed. Obtained by enzymatic hydrolysis of konjac glucomannan, MOS were grafted to mannan-oligosaccharide modified carbon dots (g-CDs-MOS). It is worth noting that the introduction of MOS reduced the dissociation constant (K D ) between fabricated g-CDs-MOS and Con A from 25.4 µM (g-CDs and ConA) to 6.22 µM. This enhanced binding affinity stem from elevated density of MOS on surface of g-CDs. Furthermore, to construct recovery-type fluorescent probe, g-CDs-MOS was bonded onto two-dimensional quencher such as 3-aminobenzeneboronic acid-functionalized graphene oxide (GO-PBA), MnO 2 or MoS 2 . The g-CDs-MOS/MoS 2 exhibited the best sensitivity due to the high electron mobility of MoS 2 . Its fluorescent intensity was logarithmically responsive to concentration of S. typhimurium within the range of 10 2 -10 8 CFU·mL − 1 , and the corresponding limit of detection was as low as 11.79 CFU·mL − 1 . This fluorescent sensor shows promise for the detection of S. typhimurium in food safety. Graphical
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