Journal of Water Process Engineering
·
2026
·
IF 6.6
Xiang Luo,Hongwei Chen,Hongjian Shen,Ling Zhang,Jinbo Chen,Shuai Liu,Bo Gao,Honglei Zhang,Yawei Gu
Zero-valent iron (ZVI) technology is regarded as one of the most efficient approaches for remediating groundwater contaminated with chlorinated hydrocarbons (CHCs). Despite its highly reactive nature, the corrosion of ZVI in aqueous solution readily results in surface passivation, which diminishes its reactivity. ZVI doped with heteroatoms such as carbon (C), nitrogen (N), and sulfur (S) has displayed excellent performance in trichloroethylene (TCE) degradation. Nevertheless, the effects of these heteroatoms on ZVI materials, along with their various degradation mechanisms, remains ambiguous. In this study, C-mZVI bm , N-mZVI bm , and S-mZVI bm were prepared, respectively, via a mechanochemical method and utilized for TCE degradation. The dechlorination reaction facilitated by each material was thoroughly investigated both theoretically and experimentally, focusing on TCE adsorption affinity, the dechlorination process, hydrogen evolution reaction (HER), electron efficiency, and lifetime. Among the three materials, S-mZVI bm exhibited 100% TCE removal in less than 24 h., as well as improved electron efficiency and lifetime, primarily attributed to its high TCE adsorption energy and the suppression of HER. These integrated theoretical and experimental results indicate that S-mZVI bm nanoparticles are a promising and innovative material for in situ groundwater TCE remediation.
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ACS Sustainable Chemistry & Engineering
·
2026
·
IF 7.6
Hui Wang,Minyao Liu,Guangzhao Zhang,Yukun Chen,Yonggang Min,Jin Li
The propagation of lithium dendrites and the “shuttle effect” of polysulfide represent two critical challenges hindering the practical application of lithium sulfur batteries (LSBs). Herein, a dual-functional integrated Janus separator is proposed, which simultaneously inhibits the shuttle effect of polysulfide and lithium dendrites to enhance the electrochemical performance of LSBs. On the lithium metal anode interface, directional denaturation treatment was first applied to increase the α-helix content in soy protein isolate (SPI), yielding α-SPI with enhanced Li+ affinity. Phytic acid (PA) served simultaneously as cross-linker and acidity regulator, anchoring α-SPI nanoparticle onto carboxylated cellulose nanofibers (C–CNF). The resulting composite was uniformly sprayed onto the separator to construct a lithiophilic α-SPI@C–CNF framework, which homogenizes Li+ flux and suppresses lithium dendrite. At the cathode interface, the made-to-measure three-dimensional carbon (M-3DC) physically entraps lithium polysulfides and thus prevent the shuttle effect. Finally, the LSB using the Janus separator delivers a high initial capacity of 938 mAh g–1 and exhibits an excellent operation stability by retaining 537.8 mAh g–1 after 1000 cycles (with a capacity degradation rate of only 0.043% per cycle). This study presents a versatile approach to simultaneously mitigate the intrinsic limitations of both the lithium metal anode and the sulfur cathode in LSBs.
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2026
·
IF 5.4
Wu Peng,Shiyu Zheng,Ruiqin Zhang,Xiaolin Yi,Fang Wu,Jingwei Hu,Yuwei Ye
Copper corrosion in chloride environments necessitates efficient and eco-friendly inhibitors. This study first proposes nitrogen, phosphorus, and sulfur co-doped carbon dots (N,P,S-CDs) as a novel inhibitor for copper in 3.5 wt% NaCl solution, filling a gap in the application of ternary-doped nanomaterials in representative neutral chloride media. The structure and performance of N,P,S-CDs were systematically compared with those of single (N-CDs) and dual-doped (N,S-CDs, N,P-CDs) carbon dots. A multi-scale investigation combining electrochemical tests, surface morphology analysis, and theoretical simulations was conducted to elucidate the corrosion inhibition mechanism. Results demonstrated that N,P,S-CDs achieved an optimal inhibition efficiency of 96.15% at 200 mg/L. The ternary doping strategy enhanced the chemical adsorption capability of CDs onto the metal surface through a synergistic effect, resulting in the formation of a compact and stable protective film that effectively blocked the attack of corrosive species. This work provides novel insights into the design of high-performance green corrosion inhibitors via multi-element synergistic doping.
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Journal of Energy Storage
·
2026
·
IF 10.7
Ruilan Xu,Zehong Chen,Jingjing Kou,Chen Nie,Wenhua Zhang,Xintu Lin,Yong Peng
Heteroatom doping is an effective strategy to break through the energy storage limitations of the conventional carbon-based supercapacitors and enhance the pseudocapacitive behavior. In this work, nitrogen and sulfur (N/S) co-doped porous carbon materials with controllable graphitized structures and abundant surface-active sites were synthesized via an in-situ doping method, using cellulase-pretreated de-oiled camphor leaves as the biomass precursor, potassium bicarbonate (KHCO₃) as the activator, and thiourea as the N/S source. N/S co-doping not only introduced numerous Faradaic active sites but also effectively balanced the graphitization degree and defect density of the material, significantly improving the pseudocapacitive contribution and overall capacitive performance. When the mass ratio of precursor, KHCO₃, and thiourea was 1:3:0.6, the resulting porous carbon electrode (PCNS-0.6) achieved a specific capacitance of 261 F·g −1 at the current density of 1 A·g −1 . At a scan rate of 10 mV·s −1 , the pseudocapacitive contribution reached 30.23%. Moreover, a symmetric supercapacitor assembled with PCNS-0.6 exhibited a capacitance retention rate of 89.5% after 10,000 cycles at 5 A·g −1 , and achieved an energy density of 13.63 Wh·kg −1 at a power density of 500 W·kg −1 , demonstrating excellent cyclic stability and promising potential for energy storage applications. This work provides an efficient synergistic modification strategy for the structural regulation and performance optimization of the biomass-derived carbon materials.
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APPLIED SURFACE SCIENCE
·
2026
·
IF 6.6
Jianlin Zhao,Xiangliang Xi,Qiulin Cao,Ping Bai,Songbo Li,Xiaohui Ma
The efficient synergy of Zn‑metal/Se‑vacancy dual active sites facilitates surface catalytic reactions. • The localized surface plasmon resonance effect of CuCo 2 O 4 broadens the spectral absorption range to near-infrared light. • The formation of S-Scheme heterojunction and its mechanism of photogenerated electron migration have been deeply studied. The synergistic effect of metal-vacancy dual active sites plays a pivotal role in surface catalytic reactions, yet its underlying microscopic mechanism remains poorly understood. Herein, a Zn-ZnSe photocatalyst containing Se vacancies is prepared through solvothermal synthesis followed by thermal reduction methods. The resulting Zn-ZnSe photocatalyst with Se vacancy (V Se ) is then coupled with the plasmonic catalyst CuCo 2 O 4 to construct a CuCo 2 O 4 /Zn-ZnSe S-scheme heterojunction. Owing to the localized surface plasmon resonance (LSPR) effect, the as-prepared CuCo 2 O 4 /Zn-ZnSe exhibits intense near-infrared light response. Experimental characterization and theoretical calculations indicate that the synergistic effect of Zn metal and Se vacancies (Zn-V Se ) promotes surface photocatalytic reactions. Specifically, H 2 O activation (*H 2 O → *OH*H) occurs primarily at Se vacancy sites, whereas Zn metal facilitates H 2 formation and desorption (*H → * + 1/2H 2 ). This work elucidates the synergistic catalysis of Zn-V Se dual active sites, and provides a strategy for converting full-spectrum solar energy into hydrogen. Download: Download high-res image (151KB) Download: Download full-size image
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Journal of Cleaner Production
·
2026
·
IF 10.7
Hailan Qin,Siyuan Di,Min Liu,Qiuyue Zhang,Pin Chen,Zihan Li,Shukui Zhu
BOC/COF S-scheme heterojunction significantly boosted charge separation efficiency. • The non-radical pathway predominated, facilitating efficient photocatalytic degradation. • Elevated 1 O 2 quantum yield was achieved via optimized charge transfer. • The reduction in toxicity was confirmed via the plant models and DFT calculations. • The non-radical-dominated and radical-assisted synergy achieved efficient TC degradation. The inefficiency of charge separation and the unselective nature of radical-based pathways severely limit the practical application of photocatalysis for water purification. Herein, a BiOCl/COF (BOC/COF) S-scheme heterojunction was successfully constructed via ultrasonic assistance. Remarkably, the optimized S-scheme heterojunction significantly enhanced photo-generated carrier separation efficiency, which effectively promoted ROS generation and improved the removal rate of tetracycline hydrochloride (TC) (degradation rate: 91.6%). The research has found that non-radical pathways collectively accounted for 89.11% of the degradation activity, endowing the system with high selectivity. It is worth noting that the BC-20 membrane can efficiently eliminate TC in a continuous-flow wastewater treatment system. Furthermore, BC-20 can degrade TC in an enlarged reactor under natural sunlight irradiation. The three possible degradation pathways were analyzed through Fukui function and LC-MS. The toxicity of the TC solution after being treated with the BOC/COF S-scheme was evaluated using mung beans as a crop model. Through (in-situ) characterization and density functional theory (DFT) calculations, the S-scheme charge transfer mechanism and interfacial electric field (IEF) driving efficient 1 O 2 production were systematically elucidated. These findings not only deciphered the interface engineering-mediated non-radical generation mechanism in BOC/COF S-scheme photocatalysis but also advanced its practical application in aquatic environmental remediation. Download: Download high-res image (519KB) Download: Download full-size image
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JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
·
2026
·Vol. 74
·期 30
·23674-23683
·
IF 6.7
Xu Meng,Liu Han,Lin Guangyu,Jing Zijian,Wen Tao,Xue Weijie,Wang Hualei,Wei Dongzhi
Transaminases
provide an effective approach for the asymmetric
synthesis of chiral amines. However, native ω-transaminases
often suffer from low catalytic efficiency and poor substrate concentration
tolerance, limiting industrial applicability. Targeting the synthesis
of ( S )-1-Boc-3-aminopiperidine, this study engineered
the ( S )-selective ω-transaminase CC1012 from Caulobacter sp. D5 through active pocket remodeling and
substrate tunnel engineering. Hydrophobic remodeling of the small
binding pocket yielded the single mutant M1 (Q25F) with a 27-fold
improvement in intrinsic catalytic efficiency ( k cat / K m ). Conservation analysis
and virtual saturation mutagenesis further identified R424 and D320
as key residues in the loop region at the substrate tunnel entrance.
Iterative saturation mutagenesis on these sites using M1 as a template
produced the optimal mutant M3 (Q25F/D320M/R424L), exhibiting a 45-fold
enhancement in k cat / K m over the wild type, achieving 98% conversion with ee > 99.9% at 1000 mM substrate concentration. This study
provides a superior biocatalyst for the efficient synthesis of ( S )-1-Boc-3-aminopiperidine.
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JOURNAL OF ELECTROANALYTICAL CHEMISTRY
·
2025
·
IF 4.1
Kuan Shen,Yuqi Chen,Ming Li,Xingmei Guo,Siying Fan,Yafei Zhao,Zhao Xu,Yuanyuan Wang,Qinghong Kong,Junhao Zhang
Non-metallic carbonaceous catalysts for oxygen reduction reaction (ORR) hold great promise for applications in zinc-air batteries (ZABs). Their performance is substantially dictated by the type and quantity of heteroatoms doped within the carbon lattice. Herein, a novel polymerization-pyrolysis strategy is proposed to prepare N, P, S triply doped carbon nanosheets (NPS-C) and regulate the amount of doped atoms. The optimized sample showcases excellent ORR catalytic performance, featuring a half-wave potential of 0.81 V vs. RHE and high long-term stability. When employed as the cathode catalyst in primary ZABs, the resulting battery delivers a high peak power density of 157.9 mW cm −2 , along with high specific capacity and good rate capability. This work provides a simple and effective strategy for developing non-precious carbon-based electrocatalysts, offering new possibilities for enhancing the performance of energy storage and conversion devices.
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CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Huan Ma,Lei Wang,Kuan Wang,Yuan-Xiao Du,Ju-Ju Zhang,Zhen-Hong He,Weitao Wang,Huan Wang,Zhao-Tie Liu
Photocatalytic CO₂ reduction to produce high-value-added chemicals is a promising strategy, however, fabricating highly efficient and economical catalysts is a critical challenge. Herein, an in-situ metal Bi engineering strategy during the construction process of double‑bismuth-based S-scheme heterojunctions is developed via a straightforward solvothermal approach. The as-prepared Bi/BiOBr/Bi 2 MoO 6 S-scheme heterojunctions exhibit abundant enriched oxygen vacancies (OVs) and a pronounced Bi surface plasmon resonance (SPR) effect due to a high dispersion of the in-situ formation process, achieving excellent photocatalytic performance of CO 2 -to-CO conversion. Surprisingly, the photocatalytic activity of CO 2 -to-CO over Bi/BiOBr/Bi 2 MoO 6 is up to 71.91 μmol·g −1 ·h −1 , with a high selectivity of 97.04 %. This represents enhancements of 141- and 1.63-fold compared to pure Bi 2 MoO 6 and Bi/BiOBr, respectively. The outstanding photocatalytic CO 2 reduction performance can be ascribed to the synergistic enhancement effects of S-scheme heterostructures, the pronounced Bi SPR effect, and the enriched OVs engineering. Theoretical calculations and in situ spectroscopy analyses unveil that the mechanism of enhanced photocatalytic CO 2 reduction achieved through in-situ metallic Bi and OVs engineering on the S-scheme heterojunction. This meticulous catalyst design provides insights into a novel strategy for the efficient and precise customization of unique S-scheme Bi-based photocatalyst with enriched OVs and Bi SPR effects, opening new avenues for practical photocatalysis applications.
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CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Wanlu Hua,Yifei Pu,Jie Xu,Baichuan Zhuang,Jing Zhang,Jifei Zhuo,Xiaoli Xie,Xin Tian,Xiangnan Chen,Tengfei Qu,Guo Li,Guangjun Gou
Heterointerface engineering has been widely proven effective for designing composite materials with high-efficiency microwave absorption (MA) capabilities. However, challenges persist in regulating the interface structures of MA materials at the microscale and nanoscale. In this study, a novel N/S-codoped multi-interfacial porous carbon composite (Fe 7 S 8 /Fe 2 S/Fe 3 C@C) is successfully prepared by chemical foaming and vulcanization. Concretely, when the carbonization and vulcanization temperature were both 600 °C, the mass ratio of carbonized sample to sulfur (carbon: sulfur) was 1:2 (PF-2), which exhibited exceptional electromagnetic wave attenuation properties. Notably, the composite achieved a minimum reflection loss ( RL min ) of −48.83 dB at 1.85 mm thickness, and an effective absorption bandwidth (EAB) value reaching 6 GHz (12–18 GHz) at 2 mm, while the proportion of paraffin wax was only 20 wt%. The significantly improved MA performance primarily originated from the synergistic effects between dielectric/magnetic heterostructures and heterointerfaces. In addition, PF-2 exhibits excellent antibacterial properties, with antibacterial rates against Escherichia coli and Staphylococcus aureus both exceeding 99.999 % under no light and 808 nm light conditions. Overall, this research provides a pathway through heterointerface engineering for designing a new generation of multifunctional electromagnetic wave absorbing materials.
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CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Sirui Liu,Qianjin Ye,Qin Li,Zhanzhen Ma,Ran Yang,Di Li,Deli Jiang
Carbon nitride (CN) has received extensive interest due to their good stability and unique conjugated structures. However, the weak charge separation ability and poor active sites lead to undesirable photocatalytic CO 2 reduction activity. Here, we successfully prepare all-organic PTA/V C -CN S-scheme heterojunction photocatalysts by integrating CN with carbon vacancies (V C -CN) and perylene tetracarboxylic acid (PTA) for photocatalytic CO 2 reduction. The introduced carbon vacancies can act as electron trapping sites, break the symmetry structure of CN and facilitate in-plane photogenerated carrier separation and transfer of CN, while the coupling of PTA with V C -CN via π-π interaction to form a built-in electric field further speeds up the interfacial charge transfer, thereby collectively enhancing the separation and transfer efficiencies of photogenerated carriers. Moreover, the high reduction capability of V C -CN with carbon vacancies as possible active sites and wide-spectrum light absorption of PTA render the S-scheme heterojunction with high photocatalytic activity. The optimum PTA/V C -CN photocatalyst exhibits a high CO production rate of 47.91 μmol g −1 h −1 , which is about 10.7 and 4.2 times higher compared to those of CN and V C -CN, respectively. This work provides a new strategy for developing all-organic CN-based S-scheme heterojunction photocatalysts used in CO 2 conversion.
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Advanced Healthcare Materials
·
2025
·
IF 9.6
Chengyan Wang,Jiahui Zhu,Ling Lin,Jie Yu,Hao Xu,Jiangfeng Du,Zhanjun Gu,Xiu-wu Bian,Jing Hu,Gan Tian,Xiao Zhang
The effectiveness of cancer treatment has been significantly improved through combined therapies that synergistically utilize multiple treatment modalities. While combination strategy mitigates tumor resistance, enhances therapeutic efficacy, and reduces side effects compared to monotherapies, the precise coordination of treatment sequences and timing remains underexplored, particularly in the nanomaterial-based therapies. In this study, this gap is addressed by investigating the interaction between photodynamic therapy (PDT) and nitric oxide (NO) therapy, with a specific focus on the sequence in which these therapies are administered. An upconversion nanoplatform is designed with orthogonal dual-channel fluorescence properties, allowing for non-interfering NO release and PDT, which enables systematic exploration of the effects of treatment sequence on therapy efficacy. The results demonstrate that administering NO therapy prior to PDT yields superior antitumor effects compared to other sequences. This time-sequenced efficacy may be attributed to NO-induced S-nitrosylation, which disrupts the intracellular regeneration cycle of reduced glutathione, thereby sensitizing tumor cells to subsequent PDT.
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