CLAY MINERALS
·
2026
·
IF 2.1
Sisi Hu,Xiangwei Zhang,Jielong Cao,Qingze Chen,Runliang Zhu
The reduction of volatile organic compounds (VOCs), especially the oxidation of highly toxic and chemically resistant toluene, remains a challenge in environmental catalysis. In this research, a porous TiO2/SiO2 support was initially fabricated through titanium pillaring of montmorillonite and then calcined and acid-leached as an efficient platform for Pt nanoparticle immobilization to yield Pt–TiO2/SiO2. The experimental data showed that the catalyst loaded with 0.37 wt.% Pt (0.37Pt–TiO2/SiO2) exhibits superior toluene oxidation performance, reaching a T90 of 190°C. Moreover, the catalyst exhibited remarkable water resistance, maintaining high efficiency even in the presence of 10% water vapour and outstanding long-term stability, with no substantial deactivation after 48 h of continuous operation. The performance improvement is explained by the high dispersion of Pt nanoparticles on the support and the metal–support interaction between Pt and TiO2, characterized by electron transfer from TiO2 to Pt. This interaction facilitates the adsorption and activation of reactant molecules. In situ diffuse reflectance Fourier-transform infrared spectroscopy explained the catalytic mechanism: toluene is sequentially transformed into benzyl alcohol, benzaldehyde and benzoate intermediates, which are subsequently converted to maleic anhydride by opening the ring and eventually mineralized into CO2 and H2O. This work developed a high-performance, durable catalyst using cost-effective and abundant natural minerals, offering promising prospects for practical abatement of industrial VOCs.
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DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2026
·
IF 9.6
Cong Liu,Qing-shan Wang,Heng-fei Cui,Hao-wen Zhu,Ming-yang Liu,Rui-tang Guo
The highly selective generation of products in the photoelectrocatalytic (PEC) CO 2 reduction reaction is significantly hindered by the complex multi-electron transfer process. In this work, we designed and synthesized a Cu 2 O-Au@TiO 2 composite with a unique “core–shell–satellite” architecture via a facile wet-chemical approach. In this architecture, the Au nanocore strengthens visible-light harvesting through localized surface plasmon resonance (SPR) and injects hot electrons into the mesoporous TiO 2 shell, while the outer Cu 2 O selectively exposes highly active (111) facets and establishes low-mismatch interfaces with TiO 2 . This configuration promotes directional charge migration through virus-like synaptic channels, thereby accelerating multi-electron CO 2 reduction. The cooperative mechanism of SPR enhancement, crystallographic facet matching, and dynamic charge transfer enables efficient and selective conversion of CO 2 to C 2 H 4 . Under visible-light irradiation and applied potential, the optimized composite achieves a remarkable C 2 H 4 yield of 174 ± 3.2 μmol·cm −2 ·h −1 with a sustained current density exceeding 75 mA·cm −2 . These findings highlight a rational structural design that synergistically couples plasmonic excitation with interfacial charge management, establishing a promising paradigm for developing high-performance photoelectrocatalytic systems toward solar-driven CO 2 reduction.
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DOI
PubMed
高影响因子
LANGMUIR
·
2026
·
IF 4.4
Canlin Zhang,Peng Jin,Ting Wang,Minxuan Chen,Zhengyang Fang,Zenghua Sun,Peng Xia
Abstract For the eco-friendly asphalt pavements with NOx degradation performance, TiO2@CoAl-LDHs were prepared and applied as asphalt modifiers. X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS) indicated that TiO2 was uniformly loaded onto the surface of the CoAl-LDHs, and TiO2@CoAl-LDHs have been successfully synthesized. The integration of TiO2 and CoAl-LDHs reduced the energy barrier for electron–hole pair formation upon light irradiation, resulting in the stronger absorbance of TiO2@CoAl-LDHs in both ultraviolet and visible light ranges. After combining TiO2 with CoAl-LDHs, the photogenerated electron transfer and separation efficiency of TiO2@CoAl-LDHs were significantly enhanced, and the recombination of electron–hole pairs was concomitantly suppressed. Compared with TiO2 and CoAl-LDHs, TiO2@CoAl-LDH-modified asphalt exhibited stronger interaction with NOx. Meanwhile, NOx diffused more easily and had a larger penetration proportion in TiO2@CoAl-LDH-modified asphalt. All of these contributed to better NOx photocatalytic degradation capability of TiO2@CoAl-LDH-modified asphalt. This study promotes the development of eco-friendly asphalt pavements.
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高影响因子
CERAMICS INTERNATIONAL
·
2026
·
IF 6
Shiyi Wang,Hongdan Wu,Tongshu Chai,Zhihui Zhou,Lu Xia,Rongxue Li,Yuqing Sun
γ-Al 2 O 3 ceramic nanofiltration (NF) membranes are promising for water treatment owing to their excellent thermal and chemical durability; however, their widespread application is restricted by low water permeance, severe membrane fouling, and insufficient stability under acidic conditions. Herein, hydrophilic TiO 2 @Al 2 O 3 NF membranes were fabricated via a controlled sol deposition strategy, in which polyvinyl alcohol (PVA) regulated sol penetration into the porous support to construct a defect-free separation layer with reduced transport resistance. Simultaneously, TiO 2 incorporation into the boehmite-derived network induced the formation of Ti–O–Al linkages, leading to enhanced membrane hydrophilicity and structural integrity. As a result, the optimized membrane exhibited a pure water permeance of 23.71 L m −2 h −1 ·bar −1 , corresponding to a 36.13% increase over the pristine Al 2 O 3 membrane, while maintaining high rejections of 91.50% for MgCl 2 and 88.28% for CaCl 2 via the synergistic effects of size sieving and Donnan exclusion. The membrane sustained MgCl 2 rejection above 90% over 48 h of continuous filtration at pH 4, demonstrating enhanced stability under moderately acidic conditions. Significantly improved antifouling performance was achieved, with approximately 1.6-fold higher flux recovery than the pristine membrane after 8 h of tetracycline fouling tests. The enhanced separation performance is attributed to the synergistic effects of reduced transport resistance, Ti–O–Al-mediated structural reinforcement, and the formation of a stable hydration layer that mitigates foulant adhesion. This work presents an effective strategy for engineering ceramic NF membranes with simultaneously enhanced permeance, antifouling capability, and operational stability under moderately acidic conditions, providing new insights into membrane design for water treatment.
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高影响因子
CERAMICS INTERNATIONAL
·
2026
·
IF 6
Xinyi Shan,Weiyi Ju,Qingyao Wang,Qian Zhu,Jiarui Chen,Na Liu,Chenchen Jia,Ran Geng,Junjie Qi,Shengwen Liao
Addressing the escalating contamination of aquatic ecosystems by industrial dyes and heavy metals such as Cr(VI), this study presents a novel TiO 2 NTs/Cu 2 O-CuO hybrid photoelectrocatalytic system. By integrating anodic oxidation with a controlled hydrothermal process, Cu 2 O-CuO dual-phase heterojunctions were successfully anchored onto TiO 2 nanotube arrays, establishing a cascade-like band alignment for efficient charge carrier separation. The characterization confirms that the energy band structure-comprising TiO 2 NTs (3.08 eV), Cu 2 O (2.11 eV), and CuO (1.77 eV)-significantly extends visible-light absorption and suppresses the recombination of photogenerated electron-hole pairs. Under combined visible-light irradiation and external bias, the system exhibits superior photoelectrocatalytic performance, achieving removal efficiencies of 96.92% for Congo red (CR), 74.87% for methylene blue (MB), and 93.64% for Cr(VI). Mechanistic insights reveal that the mineralization of pollutants is dominated by a synergistic pathway involving direct hole (h + ) oxidation and superoxide radicals (•O 2 − ) derived from O 2 reduction. Furthermore, an ecological toxicity assessment using Vigna angularis seedlings demonstrates that this photoelectrocatalytic process effectively detoxifies treated wastewater, promoting plant growth and restoring ecological safety. This work provides both a robust design principle for high-performance heterojunction photoanodes and a critical framework for evaluating the real-world environmental safety of water purification technologies.
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DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Jiangtao Hao,Yiren Zhang,Limeng Song,Fengming Yang,Huacheng Zhu,Yu Chen,Qianqian Chen,Qichao Ding,Mengru Li,Xuewen Jiang,Xinglai Yuan,Fan Zhang,Wei Li,Rui Zhang,Bingbing Fan
A novel method combining electrospinning with microwave CO 2 plasma torch sintering produces flexible TiO 2 nanofibers. • The TiO 2 fibers achieve excellent electromagnetic wave absorption with an RL min of −44.8 dB and an EAB max of 6.0 GHz. • Radar cross-section simulations of flexible TiO 2 nanofibers demonstrated a maximum reduction of 28.15 dB·m 2 . Flexible oxide nanofibers are attractive for conformal electromagnetic wave (EMW) absorption, yet rapid ceramic crystallization without sacrificing bendability remains challenging. Here, we report an ultrafast route that couples molecularly regulated electrospinning with atmospheric-pressure microwave CO 2 plasma torch sintering to fabricate flexible, defect-rich TiO 2 nanofibers. The chelated titanium sol enables continuous electrospinning, while plasma treatment at 8 kW converts precursor fibers into TiO 2 within 3 min. Multiphysics simulations reveal localized electromagnetic-thermal field coupling mechanism and a plasma core temperature approaching 7000 K, which explains the rapid precursor-to-TiO 2 conversion and the formation of nanocrystalline/amorphous interfaces under ultrafast heating-cooling conditions. Electron paramagnetic resonance and X-ray photoelectron spectroscopy confirm abundant oxygen-vacancy-related paramagnetic centers and weak surface Ti 3+ species, while transmission electron microscopy and off-axis electron holography reveal nanocrystalline/amorphous interfaces and interfacial charge accumulation. Furthermore, the obtained TiO 2 nanofibers achieve a minimum reflection loss (RL min ) of −44.8 dB at 1.8 mm and a maximum effective absorption bandwidth (EAB max ) of 6 GHz at 2.1 mm. Radar cross-section (RCS) simulations further show a maximum reduction of 28.15 dB·m 2 , indicating potential application for advanced microwave absorption. This work establishes microwave CO 2 plasma torch sintering as a rapid strategy for flexible oxide nanofibers and clarifies how plasma-induced defects and interfaces enhance EMW dissipation. Download: Download high-res image (377KB) Download: Download full-size image
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DOI
高影响因子
APPLIED CATALYSIS A-GENERAL
·
2026
·
IF 4.8
Xiangchen Kong,Shijie Hong,Xuyang Dong,Panpan Jiang,Kaiyue Wang,Yuming Tian
Mild calcination preserves porous TiO 2 (B) nanosheets and tunes oxygen vacancies • Oxygen vacancies stabilize highly dispersed metallic Cu on TiO 2 (B) • Cu-Vo interfaces promote electron transfer and suppress charge recombination • Cu-TiO 2 (B)-200 reaches 7.92 mmol g -1 h -1 under AM 1.5 simulated sunlight TiO 2 (B) is a promising photocatalyst for solar-driven H 2 evolution, yet its performance is limited by rapid charge recombination and insufficient surface reduction sites. Herein, a vacancy-assisted strategy combining mild thermal treatment with in situ photodeposition is developed to construct highly dispersed metallic Cu species on TiO 2 (B) nanosheets. Calcination at 200 °C preserves the metastable TiO 2 (B) framework while generating an appropriate concentration of surface oxygen vacancies, which serve as preferential anchoring sites for Cu and promote strong electronic coupling at the Cu-TiO 2 (B) interface. Under air mass 1.5 simulated sunlight with methanol as a sacrificial agent, the optimized Cu-loaded TiO 2 (B) sample treated at 200 °C achieves an H 2 evolution rate of 7.92 mmol g -1 h -1 and retains stable activity over five consecutive cycles. Comprehensive structural and spectroscopic characterizations, together with first-principles calculations, demonstrate that oxygen-vacancy-mediated Cu anchoring strengthens metal-support electronic coupling, promotes directional charge transfer and carrier separation, and facilitates interfacial proton reduction. These results establish a mechanistic correlation among phase preservation, oxygen-vacancy regulation, Cu dispersion, and photocatalytic performance. This work provides a practical and cost-effective strategy for constructing efficient non-noble-metal interfaces on metastable oxide photocatalysts. Download: Download high-res image (204KB) Download: Download full-size image A mild defect-engineering strategy preserves the TiO 2 (B) framework while generating oxygen vacancies that stabilize highly dispersed metallic Cu species. The resulting Cu-Vo interfaces promote directional electron transfer, suppress charge recombination, and facilitate interfacial proton reduction, thereby enhancing photocatalytic H 2 evolution under AM 1.5 simulated sunlight.
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DOI
高影响因子
JOURNAL OF MOLECULAR STRUCTURE
·
2026
·
IF 4.9
Yufan Liu,Linhan Jian,Xinxin Zhang,Md Ibrahim Khalil,Guowen Wang,Hongchao Ma,Yinghuan Fu
A 3D Bi 2 MoO 6 @Black-TiO 2 heterojunction photoelectrode was successfully fabricated. • Interfacial regulation induces Type-II band alignment and a built-in electric field. • Enhanced charge separation promotes generation of •OH and 1 O 2 reactive species. • The optimized electrode achieves 92.3% PEC degradation of KN-R dye. A Bi 2 MoO 6 @B-TiO 2 composite photoelectrode was successfully fabricated via a sequential hydrothermal-hydrogenation-solvothermal process. The three-dimensional network architecture constructed from ultrathin Bi 2 MoO 6 nanosheets and black-TiO 2 (B-TiO 2 ) nanowire arrays achieves uniform interfacial chemical distribution, integrating the merits of each component and endowing the electrode with low charge‑transfer resistance, favorable charge‑transport kinetics, and more accessible electroactive sites for PEC reactions. Band structure analysis suggests the possible formation of a Type-II heterojunction between B-TiO 2 and Bi 2 MoO 6 . Upon photoexcitation, this heterojunction can drive the migration of photogenerated electrons from Bi 2 MoO 6 to B-TiO 2 and holes in the opposite direction, effectively suppressing charge carrier recombination while promoting the generation of dominant reactive species such as •OH and ¹O₂. In photoelectrocatalytic degradation experiments of reactive brilliant blue KN-R, the optimized electrode achieves a removal rate of 92.3%, significantly higher than the sum of its photocatalytic and electrocatalytic performances, and maintains 78.9% activity after five cycles. This work provides a feasible interfacial regulation strategy for constructing high-performance photoelectrodes. Download: Download high-res image (324KB) Download: Download full-size image
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DOI
高影响因子
Journal of Physical Chemistry C
·
2026
·
IF 3.4
Jingyi Zhang,Jiaming Wu,Yuren Zhao,Keyan Li,Xinwen Guo
Photocatalytic conversion of CO2 and H2O into syngas offers a green and sustainable pathway for the production of chemical feedstocks. However, most high-yield syngas production systems rely on a noble metal photosensitizer or cocatalyst, making it challenging to obtain cost-effective syngas. In this work, we designed and prepared S-scheme TiO2/CN heterojunctions with varying mass ratios by calcining the mixture of NH2-MIL-125(Ti) and pristine carbon nitride (CN). The combination of TiO2 with CN significantly enhances visible light absorption, and the formation of an S-scheme heterojunction effectively improves the separation and migration of photogenerated carriers. In addition, the enlarged specific surface area as well as the enhanced CO2 adsorption capacity also promote the photocatalytic CO2 reduction. Without any noble metal photosensitizer or cocatalyst, the 150TiO2/CN heterojunction demonstrated excellent performance to produce syngas. The production rates of CO and H2 are 6.2 and 1.9 mmol g–1 h–1, respectively, and the syngas production rate was 3.4 and 29.5 times that of pure CN and TiO2, respectively, when high-purity CO2 is used as the feed gas and the ratio of H2O/MeCN in solvent is 1:4. By adjustment of the composition of feed gas and solvent, high yield syngas with widely tunable CO/H2 ratios from 3.3:1 to 1:3.7 was achieved, and the maximum syngas production rate reached 12.1 mmol g–1 h–1. This work provides insights into the design of highly efficient photocatalysts for CO2 conversion to fuels or chemicals.
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高影响因子
Journal of Materials Chemistry A
·
2026
·
IF 9.2
Yue Zhang,Wenhao Zhang,Guowei Hao,Jiaying Che,Zewei Wang,Yinhua Zhou,Changhai Zhang,Yongquan Zhang,Tiandong Zhang
The development of high-power electronic devices demands dielectric composites with excellent breakdown strength and high relative permittivity, reliable performance at elevated temperatures, and high thermal conductivity. Polyethersulfone (PESU) is a promising dielectric material owing to its outstanding breakdown strength and thermal stability, but it suffers from a relatively low dielectric constant. To address this, the present study investigated modification strategies by incorporating boron nitride (BN) and titanium dioxide (TiO2) into the PESU matrix, coupled with an optimized multilayer structural design. Composite dielectric films of 5 wt% TiO2-PESU (5TP), 5 wt% BN-PESU (5BP), and 2.5 wt% BN + 2.5 wt% TiO2-PESU (2.5BTP) and a hot-pressed five-layer structured film were fabricated via solution casting, and their dielectric, energy storage, and thermal properties were systematically evaluated, especially at elevated temperatures. Experimental results show that appropriate filler loading enhances composite performance. At 50 °C, the 5BP composite achieved an energy storage density of 4.38 J cm−3 and a charge–discharge efficiency of 89.6% at 420 kV mm−1. Notably, the five-layer film integrated the advantages of single fillers, delivering a higher energy storage density of 6.53 J cm−3 and a charge–discharge efficiency of 86.9% at 380 kV mm−1. Through comprehensive experiments and analysis, this work reveals the mechanism for optimizing the performance of modified PESU-based composites, providing a valuable reference for developing high-performance, stable thin-film capacitor dielectrics for high-temperature applications.
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DOI
高影响因子
ADVANCED SYNTHESIS & CATALYSIS
·
2026
·Vol. 368
·期 9
·e70446
·
IF 3.7
Dingbin Zhu,Yue Wang,Fuxiu Cao,Wanjun Xu,Wenlong Jia,Huai Liu,Rui Zhang,Lincai Peng,Tianping Lv,Tianwei He,Junhua Zhang
The photocatalytic conversion of biomass-derived monosaccharides to lactic acid (LA) provides a sustainable approach for the high-value utilization of biomass. However, conventional photocatalysts suffer from insufficient visible light absorption, rapid recombination of photogenerated charge carriers, and inadequate surface active sites, which severely hinder the generation of key active species, thereby limiting the catalytic activity and LA selectivity. Herein, this study constructs a Z-scheme heterojunction photocatalyst TiO 2 /C-CN by combining carbon skeleton and oxygen vacancy (V O )–modified TiO 2 with graphitic carbon nitride (CN), with excellent photocatalytic performance. Under visible light irradiation, it achieves 92.3% LA yield and 96.4% selectivity within 60 min. The carbon skeleton effectively enhances visible light absorption and electron transport, V O provides abundant active sites for the adsorption and activation of oxygen, and the construction of the Z-scheme heterojunction achieves efficient charge separation while retaining strong redox capability. The synergistic effect of these three components facilitates the efficient generation of superoxide radicals ( ), which selectively cleave the C3 C4 bond of glucose intermediates, directing the reaction toward LA formation. This study provides a rational strategy to design efficient and precise photocatalysts for biomass valorization through the synergistic regulation of electron transport channels, defect sites, and heterojunction engineering.
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产品关联
DOI
高影响因子
MOLECULES
·
2026
·Vol. 31
·期 9
·1430
·
IF 5.1
Weitao Li,Zeyun Dong,Zhengyu Zhang,Luoman Zhang,Qizhe Wang,Shang Li,Shuai Li,Lei Wang,Jialin Liu
Industrial dye wastewater poses serious environmental and health risks, demanding sustainable remediation strategies. Here, hierarchically porous hollow TiO2nanofibers (HNFTis) were fabricated and combined with blue, green, and orange graphene quantum dots (b-GQDs, g-GQDs, o-GQDs) to form heterojunction photocatalysts. Progressive fluorescence redshift of GQDs, induced by surface functionalization and S/B doping, narrows the bandgap and enhances visible-light absorption. Among the composites, 0.5 wt% o-GQDs/HNFTi exhibited the highest photocurrent and lowest charge-transfer resistance and degraded 99.5% of Methylene blue under visible light within 2 h, outperforming pristine HNFTi (77.7%). The synergistic effect of TiO2structural engineering and GQD fluorescence tuning demonstrates an effective strategy for designing high-performance photocatalysts for sustainable wastewater treatment.
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DOI
PubMed
高影响因子
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