ACS Applied Materials & Interfaces
·
2026
·
IF 7.8
Boran Zhang,Qinyi Li,Yun Qin,Li Zhang,Ranran Zhou,Xinling Liu,Yiping Wu,Ying Wen,Haifeng Yang,Xiaoyu Guo
Surface-enhanced Raman scattering (SERS) based on semiconductor substrates offers advantages of low cost and high stability over noble metals, but its practical application is hindered by intrinsically weak signal enhancement. Herein, we report a simple molecular engineering strategy to dramatically boost the SERS performance of TiO2 microspheres through phytic acid (PA) modification. The PA molecules anchor onto TiO2 surfaces via Ti–O–P bonds, forming PA/TiO2 composites in a single-step postsynthesis process. The optimized PA/TiO2 substrate achieves an enhancement factor (EF) of 1.2 × 107─comparable to typical noble metal substrates─and enables detection of the probe molecule 4-mercaptobenzoic acid at concentrations as low as 1 × 10–9 mol/L. Comprehensive mechanistic investigation reveals a synergistic effect: (i) PA-induced coffee-ring aggregation for analyte enrichment, (ii) Mie resonance from the TiO2 microspheres (∼253 nm) for electromagnetic field enhancement, and (iii) charge transfer (CT) resonance at the PA/TiO2 interface for additional chemical contribution, supported by density functional theory calculations and finite-difference time-domain simulations. Leveraging this high-performance platform, we construct an SERS sensor for the endocrine disruptor bisphenol A (BPA), a common contaminant in thermal paper products. The sensor exhibits excellent analytical performance: a limit of detection (LOD) of 4.7 × 10–7 mol/L, a wide linear range from 5.0 × 10–6 to 1.0 × 10–3 mol/L (R2 = 0.9971), and satisfactory spike-recovery results (97.8–103.0%) in real thermal paper samples. This work demonstrates that molecular-level surface engineering offers a scalable and cost-effective route to high-performance semiconductor SERS substrates for environmental monitoring applications.
✓ 已验证
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING SCIENCE
·
2026
·
IF 5.1
Rui Li,Sen Bai,Jianxin Liu,Qing Xi,Long Cao,Jinghao Fan,Yawen Wang,Houfen Li,Huibin Ge,Caimei Fan,Lulu Zhang,Shan Gao,Fangxia Xie,Jiancheng Wang
Photocatalytic water splitting is a promising approach for sustainable green hydrogen production, but its practical deployment is severely hindered by two critical limitations: mandatory H 2 /O 2 separation and the requirement for high-pressure hydrogen storage facilities. To address this long-standing bottleneck, a Ru-TiO 2 /Ti 2 C heterostructured photocatalyst is fabricated via a combined hydrothermal and ball-milling route. Operando spectroscopy and DFT calculations verify a cascade charge and hydrogen transfer pathway: photogenerated electrons migrate from TiO 2 to metallic Ru sites to drive water dissociation into surface H* intermediates, which then spillover onto the Ti 2 C substrate. Owing to the strong atomic hydrogen affinity of Ti 2 C, accumulated H* is immobilized in the Ti 2 C lattice via Ti-H covalent bonds, achieving in-situ atmospheric-pressure hydrogen storage. The optimized composite exhibits an in-situ hydrogen storage capacity of 2.1 wt% at ambient temperature and pressure, with a markedly reduced desorption temperature of 216°C and excellent cycling durability. This work establishes an integrated paradigm of photocatalytic water splitting and low-pressure hydrogen storage, offering a feasible strategy to resolve the inherent H 2 /O 2 separation dilemma and advance the practical application of solar-driven hydrogen production.
✓ 已验证
产品关联
DOI
高影响因子
NANO
·
2025
·
IF 1.1
Jinglin Wang,Yuntian Wei,Shikun Chen,Chan Zheng
Efficient interfacial carrier transfer and separation can effectively enhance photocatalytic activity. In this study, a high-performance Z-scheme Ti 3 C 2 @TiO 2 /g-C 3 N 4 (TCTCN) ternary photocatalyst possessing a hollow flower-like architecture was synthesized using a reliable and effective method. Ti 3 C 2 @TiO 2 heterojunctions were constructed because exfoliated Ti 3 C 2 was partially oxidized to TiO 2 during the formation of hollow g-C 3 N 4 flower-like microspheres. In the Z-scheme heterojunction, the highly conductive metallic Ti 3 C 2 layers functioned as solid-state electron mediators, promoting electron–hole separation and migration efficiency. Under visible-light irradiation, the as-synthesized TCTCN photocatalyst possessed outstanding photocatalytic tetracycline (TC) degradation efficiency that was 2.03-fold and 1.25-fold higher than those of individual layered and hollow flower-like g-C 3 N 4 , respectively. The excellent photocatalytic TC degradation efficiency is attributed to the unique hollow structure and synergy among the Ti 3 C 2 , TiO 2 and g-C 3 N 4 structures in the TCTCN composite, enabling the Z-scheme-mechanism-assisted rapid separation and slow recombination of photoinduced electron–hole pairs because of the increased photocatalytic activity. Moreover, the TCTCN ternary hybrid photocatalysts possessed good physical stability and reusability, and the TC degradation efficiency negligibly decreased after five cycles. This work is an important development to establish a sound foundation for designing g-C 3 N 4 -based hybrid photocatalysts possessing substantial charge carrier separation and transfer for efficiently degrading antibiotics.
✓ 已验证
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2026
·
IF 9.1
Zhiren Guo,Xinyue Liu,Jinlei Song,Hansheng Li,Dongxiang Zhang,Ting Liu,Xinyuan Li,Antonio Juan Dos Santos-García,Xiyan Xu,Jiatao Zhang
Conventional type-II heterojunctions broaden visible-light absorption and enhance charge separation but weaken redox potentials via charge migration, reducing thermodynamic driving force for surface catalysis. A novel direct Z -scheme heterojunction photocatalyst was constructed by decorating B 4 C with TiO 2 nanoparticles for efficient solar-driven degradation of 1,2-benzisothiazolin-3-one and other biocidal pollutants. The optimized TiO 2 /B 4 C photocatalyst achieved 98% BIT degradation within 4 h under simulated solar irradiation, with an apparent rate constant of 1.00 h −1 , approximately 38 and 6.2 times higher than those of pristine B 4 C and TiO 2 , respectively. The incorporation of B 4 C broadened visible-light absorption and promoted interfacial charge separation, while the formation of an internal electric field enabled a direct Z -scheme charge-transfer pathway that preserved strong redox potentials. As a result, photogenerated electrons accumulated on B 4 C and generated O 2 •− radicals, whereas holes retained on TiO 2 produced • OH radicals, jointly driving the oxidative degradation of pollutants. Electron Spin Resonance and radical scavenger analyses confirmed O 2 •− and • OH as the key reactive species. Density functional theory (DFT) calculations further elucidated the interfacial charge-transfer mechanism and the degradation pathway of BIT. This work demonstrates that the TiO 2 /B 4 C Z -scheme heterojunction provides an efficient strategy for solar-driven photocatalytic removal of biocidal pollutants, providing insights into rational design of high-performance photocatalysts for environmental remediation.
✓ 已验证
产品关联
DOI
高影响因子
Journal of Environmental Chemical Engineering
·
2026
·Vol. 14
·期 5
·124205
·
IF 7.5
Kaige Chen,Jie Li,Yongxiang Wang,Yong Dai,Yongming Luo,Xiaohua Cao,Xiaoping Xing
Photothermal conversion of CO 2 to methane offers a promising pathway for simultaneous carbon recycling and renewable energy storage. To date, Ni-based catalysts dominate CO 2 methanation. However, their low-temperature activity under photothermal conditions still requires improvement. MTiO 2 derived from Ti 3 C 2 MXene retains its two-dimensional (2D) layered structure and excellent photothermal conversion properties. Herein, we synthesized Ru-Ni@MTiO 2 catalysts through hydrothermal treatment of Ni-impregnated MTiO 2 with controlled Ru loading ( x = 1, 3 and 5 wt%). The optimal 3Ru-Ni@MTiO 2 catalyst achieved a CH 4 production rate of 86.25 mmol·g −1 ·h −1 at 300 °C, which is 1.3-fold higher than that of the Ru-free Ni@MTiO 2 counterpart. The superior catalytic performance stems from the synergistic electronic effect between Ni and Ru and their dual-site cooperation. Electron transfer from both Ru and MTiO 2 to Ni sites elevates the electron density of metallic Ni, which weakens the H-H bond and accelerates the dissociative adsorption of H 2 . Furthermore, Ru loading not only broadens the light absorption range and promotes photogenerated charge separation, but also increases the density of moderate basic sites, thus boosting CO 2 adsorption and activation. This work provides new insights into the design of bimetallic photothermal catalysts for CO 2 methanation.
✓ 已验证
产品关联
DOI
高影响因子
CALPHAD-COMPUTER COUPLING OF PHASE DIAGRAMS AND THERMOCHEMISTRY
·
2026
·
IF 2.2
Junjie Shi,Tongzhi Liu,Yandong Li,Yumo Zhai,Bin Yu,Jianbo Zhang,Min Chen,Jing Xu,Jingxiong Gao,Shuyi Wu,Ning Wang,Yun Huang,Jianzhong Li
Phase equilibria in the CaO-SiO 2 -TiO 2 system with 5-10 wt% Fe 2 O 3 addition were experimentally determined at 1300 °C in air. • Isothermal sections of the pseudo-quaternary system were constructed, supplying key experimental data for thermodynamic database optimization. • Fe 2 O 3 addition alters the liquid-CaTiO 3 phase equilibrium relationship and affects the distribution of Ti-bearing primary phase fields. • Experimental phase equilibrium data provide valuable information for thermodynamic database optimization. • The results provide a thermodynamic basis for optimizing Fe 2 O 3 addition in the selective crystallization of Ti-bearing blast furnace slag. Optimizing the Selective Crystallization and Phase Separation (SCPS) process is essential for improving the resource utilization of titanium-bearing blast furnace slag. However, the influence of Fe 2 O 3 addition on the phase equilibria of the CaO-SiO 2 -TiO 2 system remains insufficiently understood, particularly in Fe 2 O 3 -containing titanium-bearing slag systems. In this work, phase equilibria in the CaO-SiO 2 -TiO 2 system with 5 and 10 wt% Fe 2 O 3 additions were systematically investigated at 1300 °C in air using high-temperature equilibrium-quenching experiments, followed by characterization with XRD, SEM-EDS, and EPMA, along with thermodynamic calculations. Special attention was given to the influence of Fe 2 O 3 on the liquid-phase region and the liquid-CaTiO 3 two-phase coexistence region. The results show that the liquid region expands with increasing Fe 2 O 3 content, confirming its strong fluxing effect through stabilization of the liquid slag phase. Moreover, Fe 2 O 3 addition alters the liquid-CaTiO 3 phase equilibrium relationship and affects the distribution of Ti-bearing primary phase fields. Significant discrepancies were observed between the experimentally determined liquid-phase boundaries and FactSage predictions, with FactSage predicting a smaller liquid-phase region than that determined experimentally. The phase equilibrium data obtained in this study provide essential experimental information for thermodynamic model refinement of Fe 2 O 3 -containing CaO-SiO 2 -TiO 2 systems and offer theoretical guidance for optimizing the SCPS process and titanium-rich slag utilization.
✓ 已验证
DOI
高影响因子
MICROCHEMICAL JOURNAL
·
2026
·
IF 5.2
Yi Chen,Huayu Zhao,Jinze Li,Fujuan Peng,Yuanyuan Zhao,Qian Wang,Ruiping Zhang,Huifang Zhao
Fusiform TiO 2 nanoparticles is in-situ grew on the surface of HCl etching MXene. • MXene/TiO 2 heterojunction is served as the outstanding photoactive material in PEC platform. • This PEC aptasensor adopts the competitive displacement for sensitive and specific quantification of GP73. • The constructed PEC aptasensor is successfully applied to directly monitor GP73 in human serum samples. Golgi protein 73 (GP73) is a promising serological biomarker for the early diagnosis and prognosis of hepatocellular carcinoma (HCC), it is essential to develop a sensitive detection method for GP73. Benefiting from its high sp 2 graphitic degree, efficient photoinduced electron–hole transfer, and robust transport of photogenerated ion migration abilities, the MXene/TiO 2 heterojunction was employed to fabricate a competitive photoelectrochemical (PEC) aptasensor for sensitive GP73 detection. In this study, GP73 possessed higher affinity with GP73 Apt than cDNA, and competitively displaced cDNA from GP73 Apt upon the binding process. This MXene-based PEC aptasensor displayed a logarithmic linear response to GP73 in the concentration range of 7.3–3650 ng/mL with a limit of detection (LOD) of 0.42 ng/mL. Remarkably, this strategy was enabled to directly determinate GP73 in human serum samples of health control, esophageal cancer, gastric cancer, and HCC with analytical performance comparable to ELISA. Therefore, the proposed PEC sensing system may hold promising prospects for clinical detection of gastrointestinal cancers biomarker. The fabricated competitive displacement-triggered PEC aptasensor based on MXene/TiO 2 heterojunction is employed to directly determinate GP73 in human serum samples of hepatocellular carcinoma. Download: Download high-res image (115KB) Download: Download full-size image
✓ 已验证
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2026
·
IF 9.1
Ao Sun,Mingliang Sun,Sen Yang,Tianyi Yang,Hongwei Zhu,Erhan Qin,Cong Wang,Xin Li,Yan Xing
Ce-doped Bi 7 O 9 I 3 /TiO 2 S-scheme heterojunction was constructed for PNRR. • Ce doping modulates the Fermi level and strengthens the built-in electric field. • The enhanced BIEF promotes directional charge transfer across the heterojunction. • Strengthened charge separation improves photocatalytic N 2 fixation performance. • N 2 reduction proceeds via an associative distal reaction pathway. Photocatalytic nitrogen fixation offers a sustainable route for ammonia synthesis under ambient conditions, but its practical application is severely limited by inefficient charge separation and sluggish interfacial charge-transfer kinetics. Herein, we develop a Ce-doped Bi 7 O 9 I 3 /TiO 2 S-scheme heterojunction through dopant-mediated Fermi level engineering to strengthen the interfacial built-in electric field (BIEF) and enhance photocatalytic nitrogen fixation. The charge transfer behavior and N 2 reduction mechanism was investigated using photoelectrochemical measurements, Kelvin probe force microscopy (KPFM), ultraviolet photoelectron spectroscopy (UPS), theoretical calculations, and in situ FT-IR spectroscopy. Ce doping shifts the Fermi level of Bi 7 O 9 I 3 upward, thereby enlarging the Fermi level difference between Bi 7 O 9 I 3 and TiO 2 and strengthening the interfacial BIEF. The enhanced BIEF promotes directional interfacial charge transfer and suppresses photogenerated carrier recombination, leading to improved charge separation. Consequently, the optimized photocatalyst achieves an NH 3 production rate of 53.70 μmol g −1 h −1 in pure water, which is 8.21- and 3.76-fold higher than those of pristine Bi 7 O 9 I 3 and the undoped Bi 7 O 9 I 3 /TiO 2 heterojunction, respectively. In situ FT-IR spectroscopy and theoretical calculations indicate that the photocatalytic nitrogen reduction proceeds through an associative distal pathway. This work demonstrates that dopant-induced Fermi level engineering can effectively regulate interfacial electric fields and charge transfer behavior in S-scheme heterojunctions, providing a rational strategy for BIEF engineering in efficient photocatalytic nitrogen fixation. Download: Download high-res image (166KB) Download: Download full-size image
✓ 已验证
DOI
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2026
·
IF 19.7
Wanyin Xu,Yuanhao Chen,Tianhe Gao,Zihan Wang,Wenkang Miao,Peng Wang,Qianqian Li
Successfully tailored a dual-site architecture comprising Cu + /Ni δ+ -O V -Ti and CuNi NPs on the ultra-small TiO 2 support-derived from MIL-125(Ti). • Deeply revealed the defect rich Cu + /Ni δ+ -O V -Ti site promotes CO 2 adsorption, while the CuNi NPs with electron redistribution facilitates H 2 adsorption and desorption of the product CO. • Significantly enhanced the RWGS reaction activity and sintering-resistance. Copper (Cu)-based catalysts hold promise for the reverse water-gas shift (RWGS) reaction because of their 100% selectivity toward CO. However, their low intrinsic activity, and deactivation caused by irreversible sintering during RWGS reaction remain persistent challenges. Herein, we report a pore adsorption strategy to simultaneously achieve electronic structure modulation and preserve microstructure stability during the RWGS reaction. Specifically, a MOF-derived TiO 2 -supported CuNi catalyst is constructed with dual active sites consisting of Cu + /Ni δ+ -O V -Ti sites and CuNi nanoparticles (NPs). The optimized catalytic performance achieves CO 2 conversion of 37.1% with CO selectivity of 99.9% and operates stably for 200 h at 450 ℃, placing its performance among the advanced Cu-based catalysts reported to date. Atomic/electronic structure characterization and density functional theory calculations demonstrate that Cu + /Ni δ+ -O V -Ti sites with enhanced charge redistribution capability promote CO 2 adsorption. The CuNi NP sites with electronic interaction enhance H 2 adsorption and moderate CO adsorption. This work provides a rational design strategy for highly active, selective and stable Cu-based RWGS catalysts. Download: Download high-res image (286KB) Download: Download full-size image Dual active sites consisting of Cu + /Ni δ+ -O V -Ti sites and CuNi NPs are constructed in the MOF-derived CuNi/TiO 2 catalyst, enabling electronic modulation and structural stabilization for enhanced RWGS reaction.
✓ 已验证
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2026
·
IF 6
Xibo Du,Zhangyang Xu,Jielei Tu,Jiahui Hou,Jiancheng Cui,Lingfu Kong,Lingxi Lei,Shengyao Huang,Kangyong Liu,Mengxing Li
Oxide composite coatings with tunable refractive index, high optical transparency and self-cleaning functionality are important for advanced glass-based optical and photovoltaic applications. In this work, TEOS-regulated TiO 2 @SiO 2 interfacial coatings were fabricated by a sol–gel dip-coating route to construct multifunctional antireflective coatings for photovoltaic glass. The effect of TEOS content on the SiO 2 shell/network formation around TiO 2 nanoparticles was systematically investigated. Increasing TEOS content improved particle dispersion, promoted TiO 2 @SiO 2 interfacial construction, reduced coating roughness and tuned the effective refractive index from 2.19 to 1.47. Based on this interfacial regulation, a three-layer coating consisting of a TiO 2 @SiO 2 bottom layer, a hybrid intermediate layer and an HMDS-modified SiO 2 top layer was designed as a multilayer optical architecture with sequential refractive-index variation. The optimized coating exhibited an average transmittance of 96.50% over 380–1800 nm. In addition, the TiO 2 -containing interfacial layer endowed the coating with photocatalytic self-cleaning behavior, enabling optical recovery after methylene-blue contamination under UV irradiation. An accelerated thermal-cycling aging test conducted in accordance with the relevant IEC 61215 procedure, together with abrasion testing, showed limited optical losses under the applied laboratory conditions. When applied to mini crystalline silicon photovoltaic modules, the coated glass increased the short-circuit current density and power conversion efficiency by 8.86% and 8.84%, respectively, in relative terms. This work demonstrates that TEOS-regulated TiO 2 @SiO 2 interfacial engineering is an effective strategy for developing self-cleaning antireflective coatings with laboratory-scale optical stability for photovoltaic cover glass.
✓ 已验证
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2026
·Vol. 143
·期 39
·e71275
·
IF 3.1
Xian-Min Yang,Shi-Hao Chen,Xu Ding,Cheng-Wang Qian,Fu Wang,Ya-Dong Li,Zi-Yu Tang,Chuan-Lin Mou,Hong-Bo Deng,Lin-Yuan Wang
Here, we report that hollow MTB@Si-TiO 2 microparticles with a photo-responsive regeneration property were prepared for reproducible treatment of oily wastewater. Oil solutions of methyl methacrylate (MMA) and butyl methacrylate (BMA, containing oleic acid-modified ferric tetroxide (OA-Fe 3 O 4 )), a photoinitiator, a surfactant and silane-modified TiO 2 nanoparticles served as the middle phase. Aqueous solutions containing glycerol and surfactant were used as the inner and outer phases. Water-in-oil-in-water (W/O/W) emulsion templates were prepared by a microfluidic emulsification method and subsequently polymerized under UV light to form photocatalytic magnetic hollow porous microparticles. The hollow MTB@Si-TiO 2 microparticles exhibit high and stable adsorption performance (6.07 g/g) toward various oil–water mixtures under different conditions. In addition, cyclic oil–water separation experiments demonstrate the excellent photocatalytic regeneration capability of the microparticles and their high removal efficiency for oil and organic dyes (99.05%). Therefore, during oily wastewater treatment, the microparticles can be regenerated while directly degrading pollutants in the wastewater through photocatalysis, thereby avoiding secondary pollution caused by the use of additional solvents.
✓ 已验证
DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2026
·
IF 9.2
Zahid Hussain,Sehrish Nawaz,Zohaib Rana,Amjad Nisar,Chang Lu
A Ru electrocatalyst supported on TiO 2 nanosheets was developed to improve noble-metal utilization and durability for the hydrogen evolution reaction (HER) in acidic media. Uniform Ru nanoparticles were anchored on peroxide-derived TiO 2 nanosheets and activated via hydrogen annealing, resulting in enhanced interfacial interaction. The optimized Ru/TiO 2 interface increases the electrochemically active surface area and facilitates efficient charge transfer, leading to superior HER performance. The hydrogen-annealed Ru/TiO 2 exhibits a low overpotential of 14.5 mV at 10 mA cm −2 and maintains ∼90% of its initial current density over 120 h at −0.03 V vs RHE, demonstrating excellent stability. This work highlights that support engineering combined with thermal activation is an effective strategy to regulate the metal-support interface and enhance the activity and durability of Ru-based HER electrocatalysts, providing insights for the design of practical catalysts for acidic hydrogen production.
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）