JOURNAL OF ELECTROANALYTICAL CHEMISTRY
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2025
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IF 4.1
Zutao Zhang,Peiyuan Xiao,Jinping Mei,Xinyu Zhang,Duoduo Chen,Chenlu Jiang,Rong Huang,Qiufang Yao,Shiqing Sun
To address the challenge of high energy consumption (EC) in electrocatalytic nitrate reduction (ERN) for ammonia (NH 3 ) synthesis, this study proposes a dual strategy: engineering advanced anode materials and replacing the sluggish oxygen evolution reaction (OER) with the thermodynamically favorable urea oxidation reaction (UOR). A three-dimensional nanosheet Co-doped Ni 3 S 2 /NF (Co-Ni 3 S 2 /NF) self-supporting anode was prepared via a facile hydrothermal method. Co doping transformed the morphology from rod-like (Ni 3 S 2 /NF)) to nanosheet flower-like (Co-Ni 3 S 2 /NF), which quantitatively increased the BET surface area and electrochemical active surface area (ECSA) by approximately 7.6 and 14 times, respectively, thereby exposing a greater number of active sites. XRD revealed a ∼ 0.4° positive shift due to lattice contraction (Co 3+ radius 0.545 Å < Ni 2+ radius 0.69 Å), while a 3.1 cm −1 Raman shift indicated strengthened Ni S bonds and enhanced charge transfer. Consequently, the anode exhibited a large electrochemical active surface area (119.54 cm 2 ) and low charge-transfer resistance. It delivered superior catalytic activity, with an OER overpotential 86 mV lower than commercial Pt at 10 mA cm −2 , and a further 149 mV reduction when switched to UOR. Turnover frequency (TOF) analysis revealed that the enhanced performance originated predominantly from the increased density of active sites rather than their intrinsic activity. In combination with a Mn-CoNiP/NF cathode, UOR substitution reduced EC by 21.7 % while maintaining high NH 3 Faradaic efficiency (FE > 98 %), selectivity (SE > 95 %), and a yield rate of 1289.8 mg h −1 g −1 at −0.58 V vs. RHE. The system also demonstrated stable performance over 76 h. These findings highlight the potential of anode modulation via morphology engineering to lower energy demand in ERN, offering a sustainable strategy for efficient NH 3 production and nitrate remediation.
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APPLIED SURFACE SCIENCE
·
2025
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IF 6.9
Hao Yang,Junbin Xie,Xiangyu Li,Zhao Liu,Guixiang Teng,Zhongli Zhao,Jie He,Chun Zhang
Given the accelerated pace of industrial development and the escalating issue of water pollution, the development of high-efficiency and energy-saving materials for the degradation of organic pollutants is imperative. Consequently, the development of heterojunction photocatalytic materials has emerged as one of the most promising strategies. In this study, n-type semiconductor ZnFe 2 O 4 nanorods and p-type semiconductor BiOI nanoflowers were utilized to construct a type p-n heterojunction ZnFe 2 O 4 /BiOI, exhibiting a significantly larger specific surface area of 38.72 m 2 /g, which is 4.6 times greater than that of ZnFe 2 O 4 (8.30 m 2 /g). The density functional theory calculations reveal that the formation of the heterojunction substantially improves the electron transport efficiency and markedly suppresses the recombination of photogenerated charge carriers, primarily due to the establishment of a p-n heterostructure. Moreover, the degradation efficiency of tetracycline achieved an impressive rate of 94.8 %. The degradation efficiency remained above 90 % following three photocatalytic reaction cycle tests.
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CARBOHYDRATE POLYMERS
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2025
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IF 12.5
Yixiu Ni,Ting Feng,Shengye You,Aokang Zhang,Feng Liang,Wei Dong,Yizhong Bao
Current treatments for diabetic wounds affecting the oral mucosa frequently yield insufficient results. Key challenges complicating recovery include bacterial colonization, oxidative damage, and impaired blood vessel formation during tissue repair. To bridge this substantial therapeutic void, our research introduces an injectable hydrogel (named as SQD1) engineered specifically to promote healing within diabetic oral ulcers. This innovative biomaterial combines a polysaccharide network derived from dialdehyde scleroglucan and quaternized chitosan, further enhanced by incorporating shikonin nanoparticles. Upon local injection, SQD1 rapidly transitions into a protective hydrogel layer. The dressing demonstrates robust antimicrobial efficacy alongside potent scavenging of reactive oxygen species. These combined actions effectively transition the lesion environment away from chronic inflammation toward a productive proliferative healing state. A significant advantage involves the material's inherent biodegradability following therapy completion, guaranteeing total bodily assimilation once its wound-healing functions conclude. Collectively, results from both laboratory and animal studies confirm that SQD1 markedly hastens repair processes in oral mucosal injuries. Representing a significant stride forward, this hydrogel technology offers a highly promising approach for managing diabetic oral ulcerations, ultimately aiming to enhance patient prognoses associated with this difficult pathology.
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CHEMICAL ENGINEERING JOURNAL
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2025
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IF 13.2
Weiqi Chen,Han Hu,Li Cai,Hanxu Zhu,Qingyang Luan,Qi Jiang,Peng Liang,Jie Feng,Jinggang Wang,Jin Zhu
Poly(ethylene terephthalate) (PET) accounts for 8 % of global plastic production and 12 % of solid waste, driving extensive research into innovative recycling strategies. Nonetheless, performance degradation of mechanical recycling and high cost of chemical routes, highlighting the urgent need for cost-effective PET recycling solutions. This study presents a “one-pot” upcycling approach based on hydroxy transesterification, which directly converts PET waste into high-performance copolyesters. A key advantage of this method is the elimination of solvents and the avoidance of complete depolymerization using excess ethylene glycol or methanol. Thermal and mechanical analyses reveal that upcycled poly(ethylene- co -1,4 cyclohexanedimethanol terephthalate) (PETG) exhibits properties comparable to commercial PETG. Furthermore, we successfully synthesized a series of heat-resistance copolyesters using various PET waste sources, rigid diols with varying reactivity (2,2,4,4-tetramethyl-1,3-cyclobutanediol, spiroglycol, and isosorbide)—demonstrating the broad applicability of this strategy. Techno-economic analysis (TEA) and life cycle assessment (LCA) demonstrate a 27.2 % reduction in production costs, along with 68 % and 84 % reductions in global warming potential and fossil fuel depletion, respectively. Overall, this platform provides a sustainable and cost-effective pathway for the upcycling of PET waste.
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JOURNAL OF ALLOYS AND COMPOUNDS
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2025
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IF 6.3
Zhe Ni,Xiaolin Chen,Jie Yan,Jin Zhang,Zhou Yang,Dalong Yang,Renguo Guan
Graphene, due to its unique mechanical properties, thermal conductivity and electrical conductivity, is considered as a reinforcement for metal materials. However, there are still issues with graphene aggregation and weak bonding at the graphene/metal interface. In this study, in-situ reduction techniques by nascent hydrogen was used to reduce graphene oxide (GO), and reduced graphene oxide (rGO) coated the Al powder to prepare composite powder. The composite powder was pre-shaped into blocks by hot-press sintering and the interface bonding issue of rGO/Al was improved by multi-pass rolling processes. Raman spectroscopy and XPS were used to analyze the reduction of GO. SEM, HRTEM and EBSD were used to analyze the composition, structure, and morphology of composites. The mechanical properties of the composite materials were studied. The results showed that GO was reduced to that almost all oxygen-containing groups were removed and uniformly dispersed in the Al matrix. The microstructure of the composites was dense, with good metallurgical bonding, and no apparent defects or porosity. When the loading amount is below 0.20 wt%, the ultimate tensile strength ( UTS ), yield strength ( YS ), and Young's modulus ( E ) were increasing along with the increased rGO content. When the addition amount was 0.20 wt%, UTS (147.67 MPa), YS (126.83 MPa), and E (36506.37 MPa), of the rGO/Al composites increased by 51.89 %, 37.87 %, and 94.48 %, compared to pure Al produced using the same process.
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IEEE SENSORS JOURNAL
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2025
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IF 4.5
Fengjuan Miao,Yanan Lu,Bairui Tao
Nanomaterial-based electrochemical sensors enable real-time detection of chemical and biological parameters, with advantages including cost-effectiveness, high selectivity, high sensitivity, and portability. However, their detection sensitivity is drastically reduced in liquids due to the Debye screening effect. This paper investigates a Co₃O₄/CuS/rGO electrode for glucose detection: Co₃O₄ is obtained via annealing, while CuS and 3D wrinkled graphene are synthesized by hydrothermal method. Polyvinylpyrrolidone (PVP) is used during reduced graphene oxide (rGO) preparation to prevent graphene oxide sheet aggregation. Additionally, adding a biomolecule-permeable, porous polymer layer to the sensor extends the effective screening length near the device surface, enabling real-time glucose detection in high-ionic-strength fluids. The sensor exhibits a glucose detection range of 0.10–500 μM, sensitivity of 84.18 μA·mM⁻¹·cm⁻², signal-to-noise ratio (SNR) of 3, and detection limit of 0.046 μM. This study provides a valuable insight for applying nanomaterial-based electrochemical sensors in sweat glucose detection, which could become a powerful tool for basic research and medical applications.
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INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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2025
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IF 8.3
Jiani Qin,Yongqi Zhang,Minna Duan,Ruochen Hua,Chuanyi Wang,Bao Pan
Carbon nitride (CN)-based S-scheme heterojunction photocatalysts are a research hotspot for photocatalytic water splitting due to their efficient charge separation capability. This study successfully constructed a CuO/CN S-scheme heterojunction via a two-step calcination method and systematically investigated the effects of CuO content and calcination temperature on the material properties. Characterization results revealed that CuO nanoparticles were uniformly loaded onto CN nanosheets. 0.28 %CuO/CN exhibited the largest specific surface area and the narrowest bandgap. Synergistic nitrogen vacancies significantly enhanced charge carrier separation efficiency. Under 100 W LED light irradiation, the photocatalytic performance showed that 0.28 %CuO/CN calcined at 550 °C under air atmosphere achieved an H 2 evolution rate of 10.4 mmol h −1 g −1 and an apparent quantum efficiency (AQE) of 11.5 %, which is 9.0 times higher than that of pure CN. Furthermore, the activity decreased by only 3.4 % after 4 cycles. Mechanistic studies confirmed by in-situ EPR and band structure analysis, demonstrated that the built-in electric field drives electrons to follow an S-scheme migration path. This work provides a new strategy for designing highly efficient and stable defect-engineered S-scheme heterojunction photocatalysts.
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NEW JOURNAL OF CHEMISTRY
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2025
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IF 2.5
Xiang Gao,Jiajia Zhao,Hao Song,Xintong Zhou,Yuehua Deng,Jiali Liu,Yanrui Li
Graphitic carbon nitride (CN), a promising photocatalyst for CO2 reduction, suffers from inefficient light harvesting and sluggish charge separation dynamics, which severely restricts its application. Ionic liquids (ILs) have been used for the assisted preparation of photocatalysts, thus effectively altering their geometric and electronic properties. Herein, the 1-butyl-3-methylimidazolium hexafluorophosphate ([Bmim]PF6) IL was introduced as a modifier to successfully construct a P- and F-co-doped porous CN catalyst via simple calcination of the IL and urea without any organic solvents and templates. The optimized catalyst exhibited an enhanced photocatalytic activity for CO2 reduction via gas–solid mode under visible light irradiation, achieving CO and CH4 evolution rates of 39.9 and 2.63 μmol g−1 h−1 (CO selectivity of 94%), which were 7.8 and 4.8 times higher than those of pristine CN, respectively. PFCN also demonstrated excellent reusability and stability. Comprehensive characterization revealed that the strategy of doping of P and F atoms significantly enlarged the surface area, improved CO2 adsorption, broadened visible-light harvesting, and accelerated charge transfer and separation efficiency. This work highlights the potential of ILs as multifunctional agents for designing high-performance doped CN photocatalysts.
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Surfaces and Interfaces
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2025
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IF 6.3
Yujie Liu,Qiang He,Xiaosen Wang,Yangyang Jia,Qi Guo,Anling Li
The surface properties of materials inside aircraft engines are diverse, and the interaction mechanism between them and multi-component aviation gasoline is not yet clear. This study focused on the silicone rubber material used for aircraft pipeline connections. Through methods such as screen printing, laser etching, and low surface tension liquid spraying, surfaces with different structural characteristics such as hydrophobic, superhydrophobic, and superamphiphobic were successfully prepared. Research on 100LL aviation gasoline (surface tension ∼22 mN/m, complex chemical composition) showed that although the silicone rubber surface presented superamphiphobicity (contact angle with hexadecane >150°, rolling angle <10°), the surface with micron-sized pits (pit center width ∼25 µm, length ∼0.4 mm) still showed rapid spreading and wetting of 100LL aviation gasoline (contact angle CA ≈ 0°). The significant capillary effect shortened the wetting diffusion time to <1 s and sharply reduced the evaporation loss time to <7 s. In contrast, spraying a superamphiphobic coating on a flat substrate could effectively weaken the capillary effect, significantly delay the wetting of 100LL aviation gasoline (CA ≈ 67°), and greatly extend its evaporation time to >428 s. This result highlights the key role of micro-nano structure design of material surfaces in the wetting and evaporation kinetics of 100LL aviation gasoline. At the end of the article, based on the experimental content of this study, the intrinsic mechanism of the experimental phenomena was deeply analyzed from the perspectives of surface structure, liquid tension, and microscopic molecular interactions. This research provides an important theoretical basis for optimizing the application performance of aviation gasoline and developing new anti-fuel-wetting surfaces.
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DESALINATION
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2025
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IF 9.8
Xinyu Yang,Hao Jiang,Zongsheng Hu,Fanju Meng,Bing Hou,Nan Li,Jingwen Pan,Lei Wang
Excessive fluoride (F − ) in water environment seriously endangers ecological security. This study constructed a series of dual-metal loaded biochar adsorbents (CeFe@BC) by modifying cerium-based materials through Fe doping and coupling with straw-derived biochar substrates. Ce 9 Fe 1 @BC 11 exhibited a remarkable F − adsorption capacity of 110.32 mg/g and had broad operational pH range (q e(pH=2 – 12) ≥ 82.61 mg/g). It showed exceptional selectivity and affinity toward F − even in multicomponent systems. The adsorption process was successfully characterized by pseudo-second-order kinetic (R 2 ≥ 0.999) and Temkin isotherm model (R 2 ≥ 0.952), indicating a chemisorption-dominated mechanism. Mechanistic studies revealed that Fe(II) doping maintained the quantity of Ce(III) active adsorption sites through the Fe(II)/Ce(IV) redox reactions, enabling the inverse transformation from Ce(IV) to Ce(III), rather than participating directly in adsorption. This regeneration mechanism increased the number of adsorption active sites of the material by re-reducing Ce(IV) back to Ce(III) during fluoride adsorption or desorption, thereby significantly enhancing adsorption performance. Unlike other anions that adsorb solely via substitution of terminal hydroxyl groups (T-OH) on metal oxides, fluoride onto CeFe@BC exhibited a dual-site adsorption behavior, involving both T-OH substitution and occupancy of bridging hydroxyl (B-OH) sites. Consequently, the T-OH and B-OH groups coordinated with Ce(III) constitute the primary active adsorption sites. The hierarchical porous structure of the straw biochar exposed abundant adsorption sites and also enhanced electron transfer during redox cycles due to its superior conductivity, enabling regeneration of Ce(III) active sites. This work provided a novel strategy for the synergistic structural-functional modulation of high-performance fluoride adsorbents, advancing the rational design of materials for environmental remediation.
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JOURNAL OF ENVIRONMENTAL MANAGEMENT
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2025
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IF 8.4
Quan Yuan,Yiran Hu,Qin Zhu,Chunmei Wang,Xiaomin Dou,Jun Liu
Water resource shortage and water pollution are global challenges. Simultaneously obtaining clean water and mitigating pollutants from harsh water sources are continuously pursued in research community and industry sector. In this work, a TiO 2 /g-C 3 N 4 /PPy@MS (TGP@MS) composite was fabricated to harvest water and mitigate tylosin from wastewater concurrently through a coupled process of solar-driven evaporation and photocatalysis. The composite presents exceptional hydrophilicity, broad-spectrum light absorption, and superior catalytic activity. Incorporating polysized phenylamine onto TiO 2 /g-C 3 N 4 enhanced infrared light absorption, extending the light absorption across the full solar spectrum range of 300–1200 nm and ultimately achieving an absorption rate of 91.6 % within this range. The 3D porous structure and the hydrophilic nature of the hydrogel sponge facilitated the capillary-driven water transport to surfaces. Under one sun condition, an evaporation rate of 1.49 kg/(m 2 ·h) and a photothermal conversion efficiency of 89.4 % were achieved for TGP@MS. Active species including ·OH and 1 O 2 were generated from the TiO 2 /g-C 3 N 4 components, degrading 90 % of tylosin within 150 min. Due to the versatile purification capabilities, TGP@MS could treat a wide range of water samples, enabling simultaneous water recovery and pollutant removal. Therefore, this work demonstrates significant potential in addressing the water crisis in underdeveloped areas. It achieves this by simultaneously producing clean water and mitigating pollutants from low-quality water sources, using green and sustainable solar energy.
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WATER RESEARCH
·
2025
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IF 12.4
Boqiang Li,Longjie Cheng,Lei Wang,Baiyang Chen
Alcohols are widely used as quenchers in UV/chlorine process currently to evaluate the roles of radicals, principally relying on the premise that they selectively react with target radicals (e.g., HO ● and Cl ● ) without affecting other reactions. However, this study revealed several unrecognized alcohol-dependent phenomena in this system that clearly challenge this principle. Specifically, tert-butanol inhibited chlorine decay ( k obs = 0.14 min –1 ), whereas methanol, ethanol, and iso-butanol accelerated it by 1.2-2.3 folds ( k obs = 0.23-0.45 min –1 ). Mechanistic analysis indicated that alcohols quenched HO ● and Cl ● while simultaneously generating secondary species that altered chlorine consumption. In the case of tert-butanol, radical quenching dominated and suppressed indirect chlorine decay, so that tert-butanol actually inhibited the conversion of chlorine. In contrast, other monohydric alcohols formed HO-R ● that reacted with O 2 to O 2 ●− , a stronger driver of chlorine loss. A quantitative structure-activity relationship model (R 2 = 0.949) identified molecular polarizability (α = 13.8-42.9) and the lowest unoccupied molecular orbital energy ( E LUMO = 2.41-2.60 eV) of alcohols as predictive descriptors of chlorine decay. For representative micropollutants, using methanol as quencher inflated the apparent roles of primary radicals (up to 83.6%) but underestimated secondary species such as ClO ● , whereas tert-butanol provided more reliable qualitative indication. To assess radicals reliably, we propose a two-step strategy that avoids misattribution: (1) using tert-butanol for qualitative indication of radical involvement; (2) applying multi-probe competition kinetics and modeling radicals adduct speciation for radical quantification. This work established quantitative bounds on alcohol-induced perturbations and offers a protocol for reliable radical quantification in advanced oxidation research.
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