ACS Catalysis
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2026
·Vol. 16
·期 14
·13525-13536
·
IF 13.6
Wang Yue,Zhang Qi,Han Chunqiu,Jia Wenlong,Liu Huai,Zhang Rui,Peng Lincai,Lv Tianping,Ye Liqun,Zhang Junhua
Photocatalytic activation of C–H bonds in biomassderived molecules represents a promising strategy for biomass
upgrading. However, the efficiency of selective C–H bond activation
and oxidation is severely restricted by the sluggish kinetics of photogenerated carriers and the uncontrollable generation of reactive oxygen species. Herein, we delicately dispersed Yb single atoms on
ZnIn2S4 nanosheets that boost the photocatalytic directional activation of C–H in 5-hydroxymethylfurfural (HMF). The optimized
Yb0.8-ZIS achieves a balance between 2,5-diformylfuran selectivity
(99.8%) and production rate (906.6 μmol g–1 h–1
) under ambient
conditions. Mechanistic studies reveal that Yb single atoms not only
effectively modulate the electronic structure of ZnIn2S4 but also
serve as hole extractors, thereby enhancing the separation of photogenerated carriers and the activation of oxygen. Furthermore, the ligand-to-metal charge transfer between Lewis acidic Yb sites and
HMF effectively reduces the electron density of the α-C–H bond, thus accelerating the activation process. This work offers insight
into the rational design of rare-earth single atoms for modulating both charge dynamics and molecular activation in selective C–H
activation and oxidation.
KEYWORDS: Yb single-atom, C–H activation, electronic structure, photocatalytic oxidation, 5-hydroxymethylfurfural
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APPLIED SURFACE SCIENCE
·
2026
·
IF 6.6
Meng Li,Jing Zhou,Mengbo Zhu,Zhenghan Niu,Lang Liu
Maple leaf templating engineered non-centrosymmetric BiVO 4 with enhanced polarization. • DFT and ELF revealed lattice distortion induces electron redistribution strengthening internal fields. • ML-BiVO 4 generated 1.26-fold higher pyroelectric potential than BiVO 4 . • Catalyst achieved 100% xanthate removal within 60 min for wastewater treatment. The efficient removal of toxic and refractory xanthate from mineral processing wastewater poses a significant environmental challenge. Pyroelectric catalysis is a promising solution that utilizes temperature fluctuations, yet its efficiency is limited by weak intrinsic polarization. To overcome this limitation, this study presents a novel strategy for engineering BiVO 4 with a highly non-centrosymmetric structure by using a maple leaf as a bio-template to spatially confine the growth of a bismuth-based precursor. Electron Localization Function (ELF) analysis elucidates that the bio-template induces lattice distortion, triggering significant electron redistribution and dipole polarization. DFT theoretical calculations and second harmonic generation (SHG) prove that the enhanced asymmetry of the maple leaf template BiVO 4 (ML-BiVO 4 ) crystal, resulting in a significant improvement in dipole moment and macroscopic polarization capability. COMSOL Multiphysics simulations reveal that the ML-BiVO 4 generates significantly higher pyroelectric potentials than conventional BiVO 4 , validating the computational strengthening of the internal electric field. The xanthate removal rate of the ML-BiVO 4 catalyst exceeded 99% within 60 min, which is 1.45 times that of the traditional BiVO 4 catalyst. This work not only demonstrates the immense potential of ML-BiVO 4 as a high-performance catalyst for the sustainable treatment of mining wastewater but also provides a general bio-templating pathway for designing advanced pyroelectric materials by manipulating crystallographic symmetry. Schematic diagram of pyroelectricity catalytic degradation of xanthate. Download: Download high-res image (96KB) Download: Download full-size image
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2026
·
IF 9.6
Yan Jiang,Tongtong Zhang,Qiong Wu,Jingwen Zhao,Fengna Xi,Jianmin Wu
Developing highly sensitive electrochemiluminescence (ECL) systems is crucial for the analysis of tumor biomarkers. Herein, mildly oxidized porous silicon (MOPSi) was firstly employed to immobilize cerium oxide (CeO 2 ) nanozymes to amplify the ECL response of the luminol-dissolved oxygen (DO) system in a near-neutral condition for Alpha-fetoprotein (AFP) immunoassay. MOPSi nanoparticles possess a unique Si core/SiOₓ shell structure that enables the stable anchoring and dispersion of CeO 2 via Ce-O-Si bonds. Notably, CeO 2 -MOPSi/ITO exhibits a markedly higher ECL intensity than CeO 2 /ITO and MOPSi/ITO owing to the robust heterostructure formed between CeO 2 and MOPSi. The CeO 2 -MOPSi heterointerface enables a self-cascade catalytic process that comprises efficient oxygen reduction to produce superoxide anion radicals (O 2 •- ) and H 2 O 2 , followed by the in-situ conversion of the generated H 2 O 2 into additional O 2 •- . The abundant O 2 •- reacts with luminol radical anion (L •- ), leading to an enhanced ECL response. Moreover, an AFP immunosensor was fabricated by anchoring antibodies onto MOPSi surface. The proposed sensor shows a broad linear range from 10 fg/mL to 10 ng/mL with a detection limit of 3.3 fg/mL. This work provides a novel strategy for integrating the MOPSi carrier with nanozymes to develop advanced ECL systems for high-performance bioanalysis. Download: Download high-res image (123KB) Download: Download full-size image
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SEPARATION AND PURIFICATION TECHNOLOGY
·
2026
·
IF 9.1
Jingyu Zhang,Yicheng Jiang,Yafei Xu,Qingfeng Zhai,Chenyang Luo,Qiang Zhang
The efficient removal of organic pollutants from wastewater with diverse compositions remains a significant challenge due to the inherent limitations of traditional advanced oxidation processes (AOPs). Radical-dominated pathways are often inhibited by water matrix components, whereas nonradical pathways, although more selective and tolerant, exhibit slower reaction rates. Herein, we developed a photo-responsive Fe–B@C catalyst that enables dynamic regulation of reactive oxygen species (ROS) pathways through light irradiation, effectively acting as a switch between nonradical and radical-nonradical synergistic mechanisms. Under dark conditions, the system predominantly generates singlet oxygen ( 1 O 2 ), maintaining high stability against inorganic salts, humic acids, and broad pH variations. Upon illumination, the catalyst switches to a synergistic pathway involving 1 O 2 , hydroxyl radicals (•OH), and sulfate radicals (SO 4 − •), achieving near-complete tetracycline removal and enhanced mineralization. Mechanistic studies reveal that boron facilitates the Fe 3+ /Fe 2+ redox cycle and promotes ROS generation, while light precisely controls the activation mode. This work demonstrates a smart catalyst design strategy, allowing AOPs to adapt to varying wastewater compositions, offering a promising solution for tailored and high-efficiency water treatment.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2026
·
IF 9.6
Xiaobo Feng,Boding Zhang,Tong Wu,Hao Jin,Deju Yuan,Anjia Deng,Dong Liu,Likun Pan,Tianjun Ni
Co Fe dual single-atom sites tailor electronic structure to boost PMS activation. • 97.7% ± 2.6% tetracycline removal in 15 min ( k = 0.22 min −1 ), outperforming single-atom catalysts. • Fixed-bed reactor sustains ∼95% tetracycline removal for 120 h with lower ecotoxicity. Single-atom catalysts (SACs) for peroxymonosulfate (PMS) activation are often constrained by the limited electronic tunability of isolated mono-metal centers, which weakens oxidant adsorption and interfacial charge transfer. Herein, we overcome this limitation by constructing a Co Fe dual single-atom catalyst anchored on a nitrogen-doped carbon aerogel (Co–Fe/NCNA) for visible-light-assisted tetracycline degradation. Spectroscopic and synchrotron analyses confirm that atomically dispersed Co N 3 and Fe N 4 sites coexist within a hierarchically porous three-dimensional carbon framework, ensuring high active-site accessibility and rapid mass transport. The Co–Fe/NCNA system achieves 97.7% ± 2.6% tetracycline (TC) removal within 15 min ( k = 0.22 min −1 ), dramatically outperforming single-metal and metal-free analogues. Density functional theory calculations indicate that the coupled Co Fe sites reconstruct the local electronic structure, elevate the d-band center, strengthen PMS adsorption, and reduce the activation barrier for PMS conversion to 0.30 eV. The TC degradation proceeds through a cooperative radical/nonradical oxidation network, in which h + -mediated oxidation acts as the primary apparent pathway, while 1 O 2 , ·O 2 − , ·OH, SO 4 · − , and possible high-valent metal-oxo-like species contribute synergistically or serve as auxiliary pathways. Notably, a fixed-bed continuous-flow reactor sustains ∼95% tetracycline removal over 120 h, and outstanding activity is retained under natural sunlight. This work establishes electronic structure engineering of dual single-atom sites as a powerful strategy to boost visible-light-driven PMS activation for sustainable water remediation. Under visible-light irradiation, the Co Fe dual single-atom sites regulate the local electronic structure, optimize the d-band center, and promote photogenerated charge separation and interfacial electron transfer, thereby enabling efficient peroxymonosulfate (PMS) activation. Through the synergistic cooperation of electron-mediated PMS reduction, hole-mediated PMS oxidation, and Co/Fe self-cycling, radical and non-radical reactive species are generated to construct an integrated oxidation network, which drives the efficient degradation and mineralization of tetracycline. Download: Download high-res image (401KB) Download: Download full-size image
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JOURNAL OF HAZARDOUS MATERIALS
·
2026
·
IF 10.6
Lan Li,Hui Chen,Yuheng Chen,Baiyang Chen
Singlet oxygen ( 1 O 2 ) is a key reactive species in environmental, chemical, and biological systems. For decades, furfuryl alcohol (FFA) has been used as a probe for quantifying 1 O 2 based on the assumption that it reacts selectively with 1 O 2 but is inert toward other oxidants. However, we demonstrate that this assumption is fundamentally flawed in the chlorine-hydrogen peroxide (H 2 O 2 ) system-one of the most common contexts for 1 O 2 generation. Results demonstrate that chlorine alone can degrade FFA significantly, implying that previous studies may have systematically overestimated 1 O 2 yields. Specifically, raising pH facilitated the decay of chlorine but hindered FFA degradation, suggesting that 1 O 2 formation is unfavorable under alkaline conditions. Increasing the dosage of chlorine enhanced FFA degradation, but decreased the relative contribution of 1 O 2 to FFA degradation. More strangely, increasing the FFA dosage unexpectedly reduced the kinetics of FFA degradation, implying that the concentration of 1 O 2 was not constant under fixed chlorine-H 2 O 2 condition. Maintaining low dissolved oxygen enhanced FFA decay, suggesting that superoxide is not an intermediate for 1 O 2 formation. Furthermore, pyranone was not formed during FFA degradation processes, invalidating it as a characteristic product. These evidences together challenge the accountability regarding FFA selectivity, pyranone formation, and 1 O 2 formation mechanisms before using FFA for 1 O 2 quantification in chlorine-involved systems.
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Surfaces and Interfaces
·
2026
·
IF 6
Qiubai Jiang,Tianle Tan,Hui Deng,Jiang Wan,Long Wang,Min Li,Yang Wang,Guangxu Liu
Solar-driven interfacial evaporation (SDIE) is a low-energy and environmentally friendly technology for clean-water production. However, when applied to complex waters, volatile organic compounds (VOCs) can readily enter the condensate. In this study, a sequential strategy involving carbonization followed by composite fabrication was used to construct a CuO@Fe 2 O 3 @CC-SA (CFCC-SA) bimetallic oxide aerogel evaporator with both mechanical stability and flexibility for efficient water evaporation and VOC degradation. Synergistic interactions between Fe and Cu enhanced both the photothermal conversion efficiency and Fenton-like catalytic activity of the material. Meanwhile, the porous aerogel network provided excellent hydrophilicity and rapid water transport, thereby promoting efficient evaporation. Under 1.0 kW m –2 irradiation, the CFCC-SA evaporator exhibited an evaporation rate of 2.06 kg·m –2 ·h –1 , corresponding to an approximately 20% increase relative to the monometallic CuO@CC-SA evaporator. For phenol, CFCC-SA achieved removal efficiencies of 98.4% in the condensate and 63.8% in the raffinate. Furthermore, CFCC-SA maintained high phenol removal performance over a broad pH range and under highly saline conditions (20 wt% NaCl). Overall, by integrating efficient water transport with synergistic bimetallic catalysis, the CFCC-SA evaporator offers a promising strategy for designing SDIE systems that simultaneously enable high-rate water evaporation and VOC removal. Download: Download high-res image (272KB) Download: Download full-size image
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OPTICAL MATERIALS
·
2026
·
IF 4.3
Cong Zhang,Huidong Xiong,Zhonghao Zhao,Xiaoyu Sun,Jingliang Cheng,Chaxiu Guo,Huadong Liu
In response to the need for efficient elimination of methylene blue (MB) from dye-containing wastewater, a Mo, N-co-doped carbon quantum dot-modified BiVO 4 (5% Mo, N-CQDs/BiVO 4 ) composite photocatalyst was developed. Pristine BiVO 4 suffers from rapid charge carrier recombination and limited visible-light utilization. Introduction of Mo, N-CQDs establishes a synergistic enhancement mechanism: (1) Mo, N-CQDs act as electron mediators, improving interfacial charge separation and migration, as evidenced by reduced charge transfer resistance. Mo doping introduces impurity energy levels that trap electrons and retard recombination, while nitrogen doping enhances electron tunneling and reduces interfacial resistance. (2) UV-Vis DRS confirms bandgap narrowing and enhanced visible-light absorption. (3) Photoelectrochemical analysis reveals significantly enhanced photocurrent response and reduced charge transfer resistance, confirming improved charge separation efficiency. Under visible light, the composite achieved a degradation rate constant of 0.04089 min −1 toward MB, a 3.31-fold enhancement over pure BiVO 4 , with >95% removal within 80 min. Radical trapping identified superoxide radicals (·O 2 − ) and holes (h + ) as the predominant active species, with h + contributing ∼62% of the activity. The catalyst retained 88.65% of its initial efficiency after four cycles, demonstrating good stability. This study provides a viable charge-regulation strategy using multi-element co-doped carbon quantum dots for semiconductor modification, highlighting its potential in dye wastewater treatment.
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DESALINATION
·
2026
·
IF 9.9
Zhouxiao Zhai,Jingce Bi,Linshan Wang,Ningning Liu,Yi Wang,Xia Zhang,Zhuopeng Wang,Yide Han
A g-C 3 N 4 /Bi 2 MoO 6 /Bi 2 WO 6 ternary heterojunction was constructed via simple mechanical grinding and thermal treatment. • GBMW follows a dual Z -scheme charge-transfer pathway, preserving strong redox capability for enhanced photocatalysis. • U(VI) acts as an electron acceptor to promote charge separation and improve photocatalytic performance. Due to the difficulty of conventional photocatalytic systems in simultaneously achieving strong oxidation and reduction processes, the treatment of wastewater containing coexisting uranium and organic pollutants remains a critical challenge in the field of photocatalysis. Herein, a novel g-C 3 N 4 /Bi 2 MoO 6 /Bi 2 WO 6 (GBMW) ternary photocatalyst with a dual Z -scheme heterojunction architecture was rationally constructed for the removal of U(VI) and tetracycline (TC) under visible-light irradiation. The dual Z-scheme heterojunction extends the visible-light response range and accelerates interfacial charge transfer, while preserving strong redox potentials. Within 100 min, GBMW achieves a U(VI) reduction efficiency of 91.6% and a TC degradation efficiency of 97.6%, with corresponding k obs values of 0.02332 and 0.03664 min −1 , respectively, which are significantly superior to those of BiMO, BiWO, GCN and GBW. Notably, U(VI) can act as an efficient electron acceptor to promote the separation of electrons and holes in GBMW, which significantly facilitates the degradation of TC. Moreover, GBMW demonstrates excellent stability and anti-interference performance in various real water matrices. This work not only provides a feasible strategy for constructing high-efficiency dual Z -scheme heterojunctions photocatalysts, but also offers an effective solution for treating complex wastewater containing coexisting organic pollutants and radioactive contaminants. Download: Download high-res image (264KB) Download: Download full-size image
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CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Lingzheng Feng,Wei Han,Xiaojun Guo,Jianzhang Zhu,Jiaqi Shen,Xingguo Xiao,Hudong Yan,Fei Zha,Haifeng Tian,Xiaohua Tang
Nitrogen doping introduces sulfur vacancies and lattice distortion into In 2 S 3 , which enhances charge separation and provides anchoring sites for Ag species. • Achieves a high H 2 O 2 production rate of 965 μmol g −1 ·h −1 via the 2e − ORR pathway. • DFT reveals Ag single atoms optimize *OOH adsorption; clusters boost electron redistribution. • Exhibits efficient degradation of perphenazine (95% removal within 30 min). • Operates effectively in pure water without sacrificial agents and shows excellent stability. To address the rapid recombination of photogenerated charge carriers in indium sulfide (In 2 S 3 ) and meet the growing demand for efficient photocatalytic hydrogen peroxide (H 2 O 2 ) production systems, this study proposes a rational design. Leveraging active nitrogen species generated from urea decomposition during hydrothermal treatment, we successfully doped the In 2 S 3 lattice to construct a nitrogen-modified indium sulfide (N-In 2 S 3 ) substrate, and subsequently co-anchored silver single atoms and clusters (Ag SA+C /N-In 2 S 3 ) onto it for efficient photocatalytic H 2 O 2 production and pollutant degradation. Nitrogen (N) doping induced sulfur vacancies and lattice distortion, enhancing charge separation and surface reactivity. Ag species were atomically dispersed and firmly anchored onto the N-In 2 S 3 support, serving as efficient electron sinks and active sites. The optimized Ag SA+C /N-In 2 S 3 achieved a remarkable H 2 O 2 production rate of 965 μmol g −1 h −1 in pure water via a predominant two-electron oxygen reduction reaction (2e − ORR) pathway, significantly outperforming pristine In 2 S 3 and N-In 2 S 3 . Combined with experimental characterization and DFT calculations revealed that Ag single atoms optimized the adsorption of the *OOH intermediate and reduced the reaction free energy barrier, while Ag clusters facilitated electron redistribution and enhanced oxygen activation. It also demonstrated superior photocatalytic degradation efficiency for organic pollutant like perphenazine (95% removal in 30 min). This study highlights the synergistic effect of bulk doping and surface atomic-level engineering in developing high-performance photocatalysts for sustainable chemical synthesis and environmental remediation. Download: Download high-res image (140KB) Download: Download full-size image
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ANALYTICAL CHEMISTRY
·
2026
·Vol. 98
·期 30
·22374-22386
·
IF 7.3
Bu Zhijian,Wang Linjie,Yao Yuxuan,Chen Xinyu,Tang Zheng,Du Dan,Wu Shengtao,Lin Yuehe,Liang Hao,Niu Xiangheng
As alternatives to bioenzymes, nanozymes find promising
applications
in biochemical sensing thanks to their recognized superiorities, but
their lack of specific interactions with targets of interest seriously
hinders the exploration of selective analytical strategies when no
external receptors are employed. Additionally, most nanozymes exhibit
poor catalytic efficiency, much lower than their natural counterparts,
thus restricting the sensitivity of detection. Different from the
explored “turn-off” analytical principle relying on
the coordination of the target with a nanozyme catalytic product,
here we proposed an analyte-unique “signal-on” strategy
based on the direct target–nanozyme interaction for the sensitive
sensing of uranyl via temperature-programming the peroxidase (POD)-mimetic
activity of CoO x . As wet-chemical temperature
increased, the oxygen vacancy (O V ) content on CoO x surfaces exhibited a volcano-type trend, and its
catalytic efficiency correlated with the former positively. UO 2 2+ was found to stimulate the POD-like activity
of CoO x via increasing O V ,
exhibiting excellent specificity against other common species. Leveraging
the unique CoO x –UO 2 2+ interaction and the temperature-programmed activity of CoO x , we validated a “light-up”
colorimetric approach for UO 2 2+ selective determination,
achieving a wide detection range (0.01–2 μM) and a low
limit (5 nM). A deployable device based on intelligent reading was
further fabricated to enable on-site monitoring of the analyte. Our
work provides a “signal-on” nanozyme sensing strategy
for the quantification of UO 2 2+ , featuring specific
response, catalytic signal amplification, and free from bioreceptors.
Also, it proves a facile route to achieve dual modulation of enzyme-mimetic
activity and analyte response for broader applications.
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JOURNAL OF FLUORESCENCE
·
2026
·
IF 3.4
Liu Xiujin,Lai Gengneng,Shu Zongcheng,Li Wei,Ke Fang
Thyroid-associated ophthalmopathy (TAO) is a complex autoimmune inflammatory disease. There is an urgent clinical need for highly sensitive and minimally invasive biomarkers to enable early diagnosis and dynamic disease monitoring. Among them, miR-320a has been confirmed to be closely associated with oxidative stress regulation, fibroblast activation, and fibrosis progression. However, current detection methods, especially those based on real-time quantitative polymerase chain reaction (RT-qPCR), still suffer from cumbersome procedures, high instrumentation costs, and limited adaptability for rapid point-of-care diagnostics. To address this, we developed a nanozyme-assisted colorimetric biosensing platform integrating target-triggered probe hybridization with Co-g-C 3 N 4 , which exhibits enhanced peroxidase-like activity and stability. The method involves Co-g-C 3 N 4 synthesis, probe-nanozyme interface construction, catalytic optimization, and colorimetric detection via TMB oxidation, validated in spiked serum and with smartphone readout. The platform achieves sensitive miR-320a detection down to picomole levels with excellent linearity and specificity. In spiked human serum analysis, it reliably quantifies endogenous miR-320a with strong recovery rates (94.6-108.9%). However, we acknowledge that direct clinical validation using confirmed TAO patient samples is required for full diagnostic implementation, and this represents a limitation of the current study. Generally speaking, this work provides a portable, cost-effective, amplification-free colorimetric nanozyme platform for miRNA detection, requiring only basic laboratory equipment, and holding significant promise for point-of-care precision diagnostics in autoimmune and fibrotic diseases.
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