Journal of Physical Chemistry C
·
2026
·Vol. 130
·期 31
·10940-10951
·
IF 3.4
Li Qing,Yang Yuke,Li Huajing,Yang Yiwen,Ma Siyu,Su Qiuxing,Shi Yonghong,Li Yuangang
The
synergistic coupling of photocatalytic hydrogen production
with high-value-added organic conversion provides a new research direction
for the efficient use of solar energy and green chemical synthesis.
However, key challenges remain in the same catalytic system, such
as severe carrier recombination and difficulty in precisely controlling
the interfacial reaction pathways. To address these issues, we construct
CdS/TiO 2 heterojunction photocatalysts with Pt species
introduced by ion exchange and photodeposition. As a result, the Cd(Pt)S/TiO 2 –Pt composite photocatalyst is successfully prepared.
Under visible light irradiation, the catalyst achieves highly selective
conversion of 4-pyridinemethanol to the C–C coupling product
1, 2-di(4-pyridyl)-1,2-ethanediol, with a selectivity of 89.22%. Under
optimized reaction conditions, the maximum H 2 production
rate of the catalyst reaches 4.66 mmol·g –1 ·h –1 . Mechanistic studies show that the photogenerated
holes enriched on the surface of Cd(Pt)S drive the sp 3 C–H
dehydrogenation of 4-pyridinemethanol to form •CH(OH)C 5 H 4 N radicals, which then undergo radical coupling
to form new C–C bonds. Meanwhile, the photogenerated electrons
transfer through TiO 2 to the Pt active sites to participate
in hydrogen evolution. This study provides new insights into regulating
the selective conversion of radicals via interfacial electronic engineering
and designing photocatalytic coupled reaction systems.
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高影响因子
ACS Sustainable Chemistry & Engineering
·
2026
·Vol. 14
·期 30
·13766-13776
·
IF 7.6
Weng Jiali,Liu Zheng,Wang Hongkun,Chu Dawang
Discarded PVC/cotton waterproof materials pose a significant challenge for sustainable recycling due to the release of corrosive HCl and the formation of sintered carbonaceous residues during conventional thermal processing. Here, we report a synergistic catalytic strategy for the co-conversion of PVC/cotton-based waste into value-added chemicals under mild hydrothermal conditions. Initially, Ru/TiO 2 catalyzes the dehydrochlorination of PVC at 190 ° C; the In Situ-generated HCl serves as a Brønsted acid catalyst to hydrolyze cellulose to glucose, followed by hydrogenation to sorbitol in 61.4% yield. The resulting dehydrochlorinated PVC residue undergoes oxidative aromatization to yield aromatic carboxylic acid, with a liquid product yield of 19.5% and a phthalic acid selectivity of 63.7%. Density functional theory calculations attribute the efficient dechlorination to Ru(1015) sites, which lower the activation energy for HCl elimination by 18.76 kJ mol −1 . This catalytic system demonstrates tolerance toward real-world waste composite materials and establishes a novel pathway for the integrated upcycling of halogenated plastics and lignocellulosic biomass. Life-cycle assessment shows 97% lower global warming potential than incineration, advancing resource circularity and sustainable waste management.
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ACTA PHYSICO-CHIMICA SINICA
·
2026
·
IF 13.5
Yanyan Zhao,Jing Zhang,Xiaolong Li,Hailun Su,Lin Yang,Jianjun Zhang
A stable Py-HOF was prepared by employing H 4 TBAPy as precursor. • A TiO 2 /Py-HOF composite with excellent photocatalytic activity was constructed. • T/Py-HOF shows stability due to strong H-bonds and π–π interactions of H 4 TBAPy. • S-scheme charge transfer pathway was verified via ISI-XPS, fs-TAS, and DFT. • T/Py-HOF display good photocatalytic H 2 O 2 production yield and sterilization. Hydrogen-bonded organic frameworks (HOFs) hold substantial potential for application in photocatalysis. However, their practical application in photocatalytic H 2 O 2 generation and antibacterial activity remains hampered by intrinsically inefficient electron-hole separation and inadequate structural stability. Herein, a Py-HOF photocatalyst was prepared by employing 1,3,6,8-tetrakis (p-benzoic acid) pyrene (H 4 TBAPy) as precursor via self-assembly method, and the titanium dioxide/Hydrogen-bonded organic framework (TiO 2 /Py-HOF, T/Py-HOF) S-scheme heterojunction was rationally fabricated via an in-situ synthesis. Due to the strong hydrogen bonds and π–π interactions of H 4 TBAPy, the T/Py-HOF S-scheme heterojunction displays super stability. Furthermore, in-situ irradiated XPS, femtosecond transient absorption spectroscopy, and DFT calculations verify the S-scheme carrier migration mechanism within the T/Py-HOF heterojunction. Thanks to the ultrafast charge-transfer and excellent redox ability of the T/Py-HOF S-scheme photocatalyst, the optimally formulated T/Py-HOF-5% achieves a remarkable H 2 O 2 production rate of 1890 μmol g −1 h −1 , corresponding to approximately 15.24 and 6.19-fold enhancements compare to the pure TiO 2 and bare Py-HOF, respectively, along with excellent stability. Furthermore, the T/Py-HOF heterojunction also exhibits superior photocatalytic sterilization activity against Escherichia coli (E. coli) , achieving almost 100% of E. coli inactivation after 90 min light irradiation. Collectively, this work offers a novel insight for designing high-efficiency HOF-based S-scheme photocatalysts in energy and environment applications. A novel TiO 2 /Py-HOF S-scheme heterojunction was fabricated for efficient photocatalytic H 2 O 2 production and excellent photocatalytic E. coli sterilization. Download: Download high-res image (202KB) Download: Download full-size image
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Journal of Environmental Chemical Engineering
·
2026
·Vol. 14
·期 5
·124128
·
IF 7.5
Lin-Lin Liu,Xue-Ling Zeng,Xuan Shi,Yu-Zhuo Fan,Wen-Yan Zeng,Ze-Hui Bai,Rong-Ke You,Xue-Qin Zhan,Fang-Chang Tsai,Ning Ma
Developing a multifunctional composite membrane with efficient oil-water separation, antifouling, stability, bacterial filtration, and antibacterial functions is essential for treating oily and organic medical wastewater. In this study, a PVDF/TA/APTES/CMCS/Cu-BTC@TiO 2 membrane was fabricated using mussel-inspired surface chemistry and dip-coating. Hydrophilic tannic acid (TA) and carboxymethyl chitosan (CMCS) enhanced membrane hydrophilicity, while hydrolyzed γ-aminopropyl triethoxysilane (APTES) formed a thin SiO 2 network layer that improved the stability of the deposited coating. Photocatalytic TiO 2 and biocompatible Cu-BTC contributed to the membrane’s photothermal response, antibacterial activity, and bacterial filtration. The membrane exhibited superhydrophilicity (water contact angle 10.3°), underwater oleophobicity (oil contact angle 153.9°), high water flux (5963.33 L·m −2 ·h −1 ), and 98.85% separation efficiency. It also achieved 99.99% bacterial filtration efficiency, 99.9% photothermal antibacterial rate, 99.99% photocatalytic sterilization, and self-cleaning ability. This multifunctional membrane shows great promise for oil-water separation and medical wastewater treatment.
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APPLIED CATALYSIS B-ENVIRONMENTAL
·
2026
·
IF 19.7
Jiaman Wang,Zekai Cui,Yuechang Wei,Zhiling Tang,Jing Xiong,Yingli Wang,Xiong Wang,Xuanzhen Li,Yunpeng Liu,Zhen Zhao
MOF-derived Ag 2 O/TiO 2 p-n heterojunction enhances charge separation. • Ag 2 O acts as a proton shuttle, enabling selective CO 2 reduction to CH 4 . • In-situ DRIFTS and DFT reveal the key role of *CO protonation. • Achieves 27.89 μmol g −1 h −1 CH 4 rate with 85.87% selectivity. The photocatalytic conversion efficiency of CO 2 with H 2 O to hydrocarbons is dependent on the simultaneous enrichment of protons and electrons. Herein, the composite photocatalyst of Ag 2 O/TiO 2 were constructed by anchoring Ag 2 O species onto the MOF-derived TiO 2 support via a laser deposition technique. The optimally engineered Ag 2 O/TiO 2 photocatalyst exhibited a remarkable CH 4 selectivity of 85.87% with a formation rate of 27.89 μmol g −1 h −1 in the photocatalytic reduction of CO 2 to CH 4 , surpassing the near-zero CH 4 yield of pristine MIL-125(Ti). By combining the results of in situ DRIFT spectra and density functional theory calculations, the photocatalytic mechanism is proposed: The catalytic interface effectively overcomes the kinetic bottleneck of *CO hydrogenation, by synchronously delivering enriched protons from the Ag 2 O sites and photogenerated electrons from the MOF-derived TiO 2 support. This targeted facilitation of the critical *CO protonation step suppresses intermediate desorption which dictates the selectivity toward CH 4 . This work unveils a universal strategy of coupling robust MOF-derived microenvironments with dynamic proton-electron delivery to overcome kinetic limitations in multi-step catalytic processes. Download: Download high-res image (277KB) Download: Download full-size image
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ADVANCED FUNCTIONAL MATERIALS
·
2026
·
IF 19.9
Jiahui Hou,Jiale Ai,Mingqi He,Yang Wu,Lingniu Yang,Yingjie Yuan,Xuanhao Lao,Artem V. Kuklin,Liang Chen,Hans Ågren,Lingfeng Gao,Youju Huang
Ti 3 C 2 MXene has frequently been applied in photodetection, while there are few works directly utilizing Ti 3 C 2 MXene as an active material due to the fast carrier recombination. The construction of MXene-based heterojunctions have been demonstrated to further enhance the photo-response performance. In this work, a Ti 3 C 2 @TiO 2 heterojunction was fabricated by an in situ oxidation approach and used to construct a photoelectrochemical photodetector. The as-fabricated photodetector exhibits a narrow-spectrum response (334–380 nm), with an optimized photocurrent density of 6.43 µA/cm 2 and a photoresponsivity of 5057.14 µA/W. Benefiting from interface engineering, the Ti 3 C 2 @TiO 2 -based photodetector possesses excellent stability and sensitive response to chromium. A large range of 10 −12 –10 −6 M could be achieved in a tea water matrix with an ultra-low detection limit of 7.6 × 10 −12 M. We anticipate that this study will provide an effective approach for the design of MXene-based photodetectors and pave the way for online chromium monitoring sensors in particular.
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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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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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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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MOLECULES
·
2026
·Vol. 31
·期 16
·2773
·
IF 5.1
Jun Tong,Yulin Shen,Minhua Huang,Huiwen Pang,Qian Yan,Lihong Yao
Bamboo is a renewable and mechanically robust bio-based material with potential for sand-barrier construction; however, its long-term outdoor use is limited by ultraviolet-induced photoaging, moisture uptake, wind-sand abrasion, and biological colonization. In this study, a fluorine-free EP/TiO2/ODTMS superhydrophobic coating was deposited on moso bamboo using a simple spraying process. Rutile TiO2was incorporated as a roughness-building and ultraviolet-shielding filler, waterborne epoxy resin served as a film-forming binder to improve particle anchoring and coating cohesion, and octadecyltrimethoxysilane was used to reduce the surface energy. The formulation containing 50–100 nm rutile TiO2and 2 wt.% epoxy resin provided the best overall balance between surface wettability and mechanical durability, with a water contact angle of 156.4° and a sliding angle of 6.9°. SEM observations revealed a hierarchical surface composed of TiO2particles and microscale agglomerates immobilized within the epoxy matrix. EDS and FTIR results supported the incorporation of TiO2- and ODTMS-derived components, while UV–Vis–NIR diffuse-reflectance measurements showed an improved optical response in the ultraviolet region. The coating retained superhydrophobicity after sandpaper abrasion, gravel impact, and tape-peeling tests. After 672 h of xenon-lamp aging, the coated bamboo maintained a water contact angle above 150°, exhibited a total color difference of approximately 7.65, and retained 91.1% of its initial flexural strength. In addition, qualitatively reduced visible mildew colonization was observed during 45 days of high-humidity exposure. These results demonstrate that the spray-deposited coating provides a fluorine-free and potentially scalable approach for improving the water repellency, mechanical durability, and accelerated-weathering resistance of bamboo sand-barrier materials.
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PubMed
高影响因子
ChemistrySelect
·
2026
·Vol. 11
·期 18
·e73395
·
IF 2.3
Jiran Liang,Yixuan Zhang,Yingfu Zhang,Xiaoping Gao,Haigang Liu,Qian He
Although TiO 2 aerogel has structural advantages, they often suffer from low sensitivity in NH 3 detection. To improve the response of ammonia (NH 3 ) sensing at room temperature (25°C), this study aims to increase the concentration of surface hydroxyl groups. The sol-gel method and ambient pressure drying are used to prepare TiO 2 aerogel, and the influence of the molar ratio of water in the precursor solution is studied. The results show that when the water molar ratio was 19.7%, the TiO 2 aerogel sensor exhibits a significant response 14.12 to 50 ppm NH 3 . The enhanced sensing response is attributed to the adsorption of NH 3 onto the abundant surface hydroxyl groups via hydrogen bonding. And the aerogel framework provides active sites (e.g., –OH and oxygen vacancies) that favor NH 3 adsorption. This work provides a method to fabricate room-temperature NH 3 sensors with improved performance using TiO 2 aerogels. Compared with previously reported TiO 2 aerogel NH 3 sensors, this work achieves a shortened response time. Despite long recovery time and humidity-induced response suppression, the TiO 2 aerogel structure provides a foundation for future room-temperature NH 3 sensors. Graphical TiO 2 aerogels were synthesized via a sol-gel method followed by ambient pressure drying. The obtained material exhibits short response time and good selectivity toward ammonia (NH 3 ). The structural properties were characterized by XRD, FT-IR, FE-SEM, XPS, and BET. The TiO 2 aerogel shows a response of 14.12 toward 50 ppm NH3, with response/recovery time of 4/140 s.
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ACS Catalysis
·
2026
·
IF 13.6
Jinzeng Guo,Penghao Li,Diandian lv,Wenxiang Zhu,Qi Shao,Zhenhui Kang,Mingwang Shao,Fan Liao
Developing durable and active catalysts for the acidic oxygen evolution reaction (OER) remains a central challenge for water electrolysis. Here, we demonstrate that constructing supported p−n junctions provides an effective strategy to simultaneously couple interfacial water activation with active-site stabilization. RuO2 nanoparticles immobilized on oxygen vacancy-rich TiO2 nanoribbons (RuO2/TiO2NRs) form a robust p−n heterojunction whose built-in field directs charge separation and tunes interfacial energetics. TiO2 acts as a water-activation co-catalyst, facilitating H2O dissociation at the junction, while structural confinement and charge redistribution suppress Ru over-oxidation and dissolution. A transient potential scanning technique directly visualizes the interfacial charge storage and release behaviors, providing dynamic evidence for the built-in electric field of the p−n junction in regulating charge separation and water-dissociation kinetics. Theoretical calculations reveal electron enrichment on Ru, weakened *OH/*O adsorption, and a reduced barrier for the potential-determining *O → *OOH step, while differential electrochemical mass spectrometry confirms an adsorbate-evolution mechanism without lattice oxygen participation. Consequently, RuO2/TiO2NRs deliver an overpotential of 192 mV at 10 mA cm−2 in 0.5 M H2SO4 and sustain a ∼650 h durability. This heterojunction-guided loading strategy unifies activity and acid durability by co-engineering charge transfer and water activation at oxide/oxide interfaces.
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