ENVIRONMENTAL SCIENCE & TECHNOLOGY
·
2026
·Vol. 60
·期 32
·22813-22822
·
IF 12.2
Gao Jigang,Liu Peiqi,Huang Yukai,Hu Yulong,Zhou Zhongyue,Yuan Wenhao,Zeng Meirong
Lipid oxidation driven by intermolecular interactions
plays a pivotal
role in human aging and indoor environmental quality, yet the underlying
interaction mechanisms remain largely elusive. Here, we uncover a
coupled autoxidation network in the heterogeneous co-ozonolysis of
model skin lipids (cholesterol and fatty acids), using online atmospheric
pressure photoionization coupled with an ultrahigh-resolution mass
spectrometer. Individual cholesterol exhibited extremely low heterogeneous
reactivity (determined as effective uptake coefficient, γ eff, Chol = 2.94 × 10 –6 ). However,
upon co-ozonolysis with fatty acids (oleic or linoleic acid), its
reactivity was enhanced by 31-fold (γ eff, Chol = 9.11 × 10 –5 when mixed with linoleic acid),
and elevated relative humidity further amplified this effect by an
additional 3-fold. The identification of α-alkoxyalkyl hydroperoxides,
α-acyloxyalkyl hydroperoxides, hydroxyalkyl hydroperoxides,
and secondary ozonides provides direct molecular evidence that Criegee
intermediates (CIs) drive the co-ozonolysis interaction network. Furthermore,
the detection of highly oxygenated molecules reveals that • OH reactions are triggered by CIs and hydroperoxide decomposition,
establishing a free-radical chain propagation pathway that further
accelerates autoxidation. We propose a novel interactive lipid autoxidation
mechanism: initiated by lipids’ co-ozonolysis, propagated via
CI-driven interactions, and amplified by • OH-mediated
radical chemistry. These findings unveil a coupling mechanism of CIs
and • OH pathways in governing the heterogeneous
reactivity of naturally coexisting lipids, providing fundamental insights
into their impacts on biological aging and environmental evolution.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
APPLIED SURFACE SCIENCE
·
2026
·
IF 6.6
Zihao Guo,Zeqi Liu,Chaoxuan Wang,Lei Qian
Here, oxygen vacancy was introduced into hexagonal β-Ni(OH) 2 (NV) nanosheets to prepare poly (vinylidene fluoride-co-hexafluoropropylene)-based dielectric composites. Oxygen vacancy gradients were controlled, and the enhanced effects on energy storage performance were systematically investigated. It was found that the oxygen vacancy elevated the Ni 2+ /Ni 3+ ratio, shifted the Fermi level downward and induced formation of deep trap states. The moderate oxygen vacancies produced uniformly distributed deep strap states, which delayed the carrier migration by the capture-release mechanism. The Fermi level (E v − E f ) of NV 1.5 was 1.064 eV and showed the smallest energy separation from the valence-band, resulting in the highest interfacial potential barrier and inhibiting the charge injection. So, the oxygen vacancy obviously affected leakage current, breakdown strength and energy density. It was observed that leakage current density of the composites reduced to 3.48 × 10 −8 A/cm 2 . At the 0.3 wt% loading of NV1.5, the composite achieved a breakdown strength of 792.97 kV/mm and an energy density of 21.15 J/cm 3 (88.17 % over the matrix), with charge–discharge efficiency of 74.12 % and below 1 % performance degradation after 10 4 cycles. This work establishes a novel route based on defect engineering for dielectric storage materials at the atomic level. Download: Download high-res image (101KB) Download: Download full-size image
✓ 已验证
产品关联
DOI
高影响因子
ENVIRONMENTAL RESEARCH
·
2026
·
IF 8.2
Fengling Jiang,Ziwei Lan,Yongzheng Ma,Yuan Zhang,Xiaoqing Li,Dickon H.L. Ng,Jia Li
Micro/nanomotors have demonstrated significant potential in environmental monitoring and water remediation owing to their enzyme-like catalytic properties and self-driven ability. Herein, we developed a conical Co(OH) 2 @MnO 2 micromotor through an integrated oil bath-hydrothermal synthesis strategy. The micromotors feature MnO 2 nanosheets arranged in a two-dimensional cross-array architecture on their microconical surfaces, which effectively catalyze H 2 O 2 decomposition to produce oxygen bubbles, enabling robust self-propulsion. The speed of the micromotor can reach 138.59 ± 2.03 μm/s in7 wt% H 2 O 2 solution. The combination of excellent enzyme-like activity and self-driven ability of micromotor constructs a dynamic sensitive detection platform for resveratrol (RES, 3,4′,5-trihydroxystilbene), a potential pollutant in water, with a low concentration detection limit of 0.23 μM. In addition, hydrogen peroxide and peroxymonosulfate (PMS) were used as catalytic substrates to catalyze the micromotor to generate various reactive oxygen species (ROS), thus achieving efficient synergistic degradation of resveratrol. Under neutral pH conditions, the degradation rate of resveratrol by the micromotors was 91.6% within 40 min. This study provides an intelligent strategy for developing dynamic sensors with the dual functions of detecting and degrading RES simultaneously.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
AICHE JOURNAL
·
2026
·
IF 4.4
Quanqi Zhang,Zhonghua Jiang,Bo Yang,Binbin He,Ye Yang,Yucai Qin,Jian Zheng,Yi Mei,Yun Zu
Alloying Ni with another metal on γ-Al 2 O 3 support holds considerable promise to enhance carbon-resistance in dry reforming of methane (DRM), yet its effectiveness is constrained by poorly controlled alloy structure and surface Al-OH groups. Herein, bimetallic NiCo/γ-Al 2 O 3 catalysts were designated using electropositive NiCo complexes via a strong electrostatic adsorption strategy. The NiCo alloy and oxygen vacancy were primarily derived from the evolution of surface Al- μ 2 -OH and Al- μ 3 -OH groups anchored NiCo layered structures. The optimized Ni 3.0 Co 3.0 Al catalyst achieved near-thermodynamic-equilibrium CH 4 and CO 2 conversions, along with ultra-low coke deposition rate (0.03 mg coke ·g cat −1 ·h −1 ) after 200 h on-stream at 600°C. Microkinetic and in situ FTIR studies elucidated the reaction mechanism, wherein CH x * species from CH 4 decomposition on atomically uniform NiCo alloys were rapidly eliminated by surface Al–OH and reactive O* generated from CO 2 dissociation on limited oxygen vacancies, forming labile HCOO* and CH x O* intermediates, while effectively suppressing the Boudouard reaction, thereby ensuring exceptional catalyst longevity.
✓ 已验证
DOI
高影响因子
JOURNAL OF POWER SOURCES
·
2026
·
IF 8.4
Yuqian Gao,Haotian Tan,Wenxue Chen,Jinlin Wang,Fan Luo,Hongfu Gao,Maierwaiti Jimosi,Xiaoyuan Zeng
The development of highly efficient and low-cost bifunctional catalysts is pivotal for the large-scale commercialization of water electrolysis technology. A solvothermal method was used to fabricate the bifunctional Ir 0.1 Ni/Ni(OH) 2 electrocatalyst, utilizing Ni(OH) 2 which served as both the support and the nickel (Ni) source for the in-situ formation of IrNi alloy nanoparticles via co-reduction. The significant electronegativity difference between iridium (Ir) and Ni induced electron transfer from Ni to Ir at the alloy interface, resulting in substantial interfacial electronic reconstruction. This electronic synergy optimally regulated the bifunctional activity: the electron-rich Ir sites facilitated the adsorption of hydrogen intermediates, enhancing the hydrogen evolution reaction; whereas the electron-deficient Ni sites strengthened the adsorption of hydroxyl and oxygen intermediates (OH, OOH*), significantly lowering the energy barrier for the oxygen evolution reaction. Therefore, this catalyst exhibits excellent activity and stability in both the OER and the HER. In a 1.0 M KOH solution at a current density of 10 mA cm −2 , the HER requires an extremely low overpotential of only 31 mV, while the OER requires 270 mV. Moreover, Ir 0.1 Ni/Ni(OH) 2 serves as an electrocatalyst for overall water splitting in alkaline media. This research provides a simple and effective strategy for designing advanced alloy catalysts for sustainable energy conversion.
✓ 已验证
产品关联
DOI
高影响因子
PHYSICA B-CONDENSED MATTER
·
2026
·
IF 3.2
Chang Feng,Qian Jing,Li Tang,Jiangping Jing,Ruiling Wang,Zhuoyuan Chen
S-C 3 N 4 /Mg(OH) 2 heterojunction photocatalyst was synthesized via a simple ball-milling method. • S-C 3 N 4 /Mg(OH) 2 exhibited significantly enhanced photocatalytic performance. • S-C 3 N 4 /Mg(OH) 2 demonstrated stable photocatalytic activity in complex ionic environments. • The photocatalytic reaction mechanism of S-C 3 N 4 /Mg(OH) 2 was proposed in this work. This work fabricated a type II 2D/2D S-doped graphitic carbon nitride/magnesium hydroxide (S-C 3 N 4 /Mg(OH) 2 ) heterojunction photocatalyst via a straightforward ball-milling method. The Mg(OH) 2 nanosheets are uniformly dispersed on the surface of S-C 3 N 4 , forming a well-developed heterojunction structure. The S-C 3 N 4 /Mg(OH) 2 composite material was employed as a photocatalyst and exhibited high efficiency in degrading tetracycline and methyl orange in an aqueous environment. The optimized S-C 3 N 4 /Mg(OH) 2 -30 composite demonstrated superior photocatalytic performance, achieving 100% removal of tetracycline within 45 min and 93% degradation of methyl orange within 60 min. Its performance was significantly superior to that of the single-component photocatalysts, and it exhibited stable photocatalytic activity even in complex ionic environments. The formation of Type-II heterojunction between S-C 3 N 4 and Mg(OH) 2 facilitates charge separation/migration and thus significantly enhanced pollutant removal efficiency. The S-C 3 N 4 /Mg(OH) 2 composite material fabricated in this work shows great promise for practical wastewater treatment applications. The S-C 3 N 4 /Mg(OH) 2 heterojunction photocatalyst was successfully fabricated. It not only exhibits outstanding photocatalytic performance in degrading organic pollutants but also maintains stable photocatalytic degradation ability even under complex ionic conditions. Download: Download high-res image (368KB) Download: Download full-size image
✓ 已验证
产品关联
DOI
高影响因子
ACS Catalysis
·
2026
·
IF 13.6
Yu-Jun Xu,Chiao-An Hsieh,Chen-Yu Zhang,Li-Dan Zhang,Han Tang,Lu-Lu Zhang,Jun Cai,Yan-Xia Chen,Shuehlin Yau,Zhi-Feng Liu
Electrochemical energy and substance conversion devices involve complex electrode processes characterized by multiple charge transfer steps, competing pathways, and various intermediates. Such complexity makes it challenging to enhance the electrocatalytic activity. The prevailing strategy typically focuses on optimizing the geometric and electronic structures of the electrocatalysts to align the adsorption energies of reaction intermediates with the peak of the activity Volcano curve. In this study, we demonstrate that surface decoration can effectively shape the micro reaction environment for the model system of the oxygen reduction reaction (ORR) on Pt electrodes. By applying a partial hydrophobic I* adlayer on the Pt surface, we can shift the equilibrium of OH* reduction and weaken H2O* adsorption, which significantly enhances ORR kinetics. With in situ scan tunneling microscopy (STM) and theoretical calculations, our study reveals the formation of isolated Pt2 surface units situated in a hydrophobic valley surrounded by adsorbed iodine atoms. This minimalist Pt2 active unit exhibits significantly greater activity for the ORR compared to an extended Pt surface. Our results overturn the previous consensus that the I* adlayer always poisons the electrocatalytic reaction. Our systematic studies also reveal that whether I* acts as a poison or a promoter, as well as the extent of its promotional effect, depends on its coverage. This finding could pave the way for developing highly efficient catalysts with potential applications in fuel cell technology and metal air batteries and extension to other electrochemical conversion reactions such as ammonia synthesis and CO2 reduction.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
·
IF 6.3
Tong Liu,Tao Zhang,Xinyue Du,Linhu Jin,Chunfeng He,Kewei Zhang,Mingzhe Zhang
With the advancement of automotive intelligence and electrification, ethylene glycol (EG), as a critical component in antifreeze and coolant systems, has gained increasing industrial significance. However, the volatile nature of EG poses potential health hazards, making the development of high-performance EG gas sensors an urgent priority. In this study, a CuO-In(OH) 3 Type II p-n heterojunction was directly fabricated through a solvothermal method followed by 200°C annealing. The developed CuO-In(OH)₃-based gas sensor demonstrates exceptional EG sensing performance, exhibiting a response magnitude of 21.3 toward 50 ppm EG at 95°C – 7.9 times higher than that of pure CuO (2.7). Notably, the operating temperature was reduced from 120°C (pristine CuO) to 95°C while maintaining excellent repeatability (6 cyclic tests) and long-term stability (26-day continuous operation). The first engineered heterojunction, characterized by its nanoflower-cube hierarchical architecture, not only provides a novel strategy for designing efficient EG gas sensors but also demonstrates promising potential in environmental safety assurance.
✓ 已验证
产品关联
DOI
高影响因子
Reaction Kinetics Mechanisms and Catalysis
·
2026
·
IF 2.1
Hu Yanan,Yang Dawei,Li Qiaoling,Yu Chengcheng
Herein, a Cr-doped Ni-Cu/(NiOH) 2 coating supported on nickel foam (Ni-Cu-Cr/NF) was fabricated via a facile one-step electrodeposition strategy and employed as an efficient electrocatalyst for the hydrogen evolution reaction (HER) in alkaline media. In 1 M NaOH, Ni–Cu–Cr/NF requires an overpotential of 30 mV to reach a current density of − 10 mA cm⁻ 2 and exhibits a Tafel slope of 55 mV dec⁻ 1 . These electrochemical results are associated with the combined effects of the multicomponent composition and an increased electrochemically active surface area (ECSA). The ECSA of Ni–Cu–Cr/NF is approximately 23.6 times that of Ni–Cu/NF. In addition, the catalyst maintains stable operation for 60 h during continuous electrolysis. This work presents a simple preparation method for the novel Ni-Cu-Cr/NF catalyst and systematically investigates the impact of Cr doping on enhancing catalytic performance, providing an effective strategy for the development of nickel-based alloy electrocatalysts. Graphical
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2026
·
IF 6.7
Chao Chen,Meng-Han Li,Ya-Yun Ma,Guo-Zhi Han
Photo-deposition method has the advantages of simplicity, environmental friendliness, and high efficiency, and has been widely used in the field of materials preparation. In this paper, we firstly prepared hollow black TiO 2 microspheres by template method, then using the mesoporous hollow microspheres as a carrier, NiCl 2 ·6 H 2 O as raw material, a novel kind of hollow Ni(OH) 2 @TiO 2 composite microspheres was prepared by photochemical deposition. Characterization of X-ray diffraction (XRD), transmission electron microscopy (TEM), scanning electron microscopy (SEM), fluorescence spectrophotometry (PL), X-ray photoelectron spectroscopy (XPS), and Fourier transform infrared spectroscopy (FT-IR) indicated that the two units of TiO 2 and Ni(OH) 2 in the composite hollow microspheres form tightly chemical connections. More importantly, this chemical connection endowed the two functional units with mutually enhanced catalytic performance for reduction of aromatic nitro compounds and photocatalytic degradation of emerging organic pollutants. For example, it can catalyze the reduction of 4-nitrophenol (4-NP) to 4-aminophenol (4-AP) by NaBH 4 with a k value of 0.8457 min −1 , as well as degrade tetracycline hydrochloride (TCH) with a degradation rate of 92.29% within 60 min with a k value of 0.0606 min −1 , which is superior to most previous reports. Finally, based on a series of control experiments, a plausible mutually enhanced catalytic mechanism was proposed.
✓ 已验证
DOI
高影响因子
Journal of Physical Chemistry C
·
2010
·
IF 4.224
Shunwei Hu,Jia Zhu,Ling Wu,Xuxu Wang,Ping Liu,Yongfan Zhang,Zhaohui Li
Fluorinated In(OH)ySz solid solutions were synthesized via a hydrothermal method. The photocatalytic degradation of rhodamine B (RhB) over the fluorinated In(OH)ySz solid solutions revealed that the process of the de-ethylation of RhB was enhanced, while in the meantime, the rate of the mineralization of RhB was suppressed when In(OH)ySz was fluorinated. To elucidate the opposite effects of fluorination on the two processes of photocatalytic degradation of RhB (de-ethylation and mineralization) over In(OH)ySz, the adsorption of RhB over In(OH)ySz with and without fluorination, the active species involved in the de-ethylation and the mineralization of RhB, were investigated, and the electronic structure of fluorinated In(OH)ySz was studied. The results indicated that the major active species involved in the de-ethylation and the mineralization of RhB are different, that is, the hole direct oxidation leads to the de-ethylation of RhB, while the major active species responsible for the mineralization of RhB is the O2−• radical. The fluorination on In(OH)ySz solid solutions on one hand can enhance the adsorption of RhB on the catalyst surface, leading to a higher rate in the de-ethylation of RhB. On the other hand, fluorination lowers the conduction band of In(OH)ySz, which leads to a lower capability of the photogenerated electrons in the reduction of O2 to give O2−• radicals. Our results clearly show that the fluorine modifications can have ambilateral effects on the photocatalytic performance of semiconductor photocatalysts depending on the specific photocatalytic reactions.
研究领域:
材料科学
·
光催化
·
环境化学
·
半导体催化
✓ 已验证
DOI
高影响因子
Journal of Energy Storage
·
2022
·
IF 8.907
Jiahui Fan,Aiying Chen,Xiaofeng Xie,Lijian Gu
Three-dimensional (3D) hybrids are very valuable in the construction of supercapacitor electrodes. Ni(OH) 2 cellular arrays were in-situ grown on nickel foam using Co 3 O 4 nanosheets (NSs) as nucleating agent. The formation, microstructure and supercapacitance performance of the Co 3 O 4 /Ni(OH) 2 cellular arrays are systematically investigated. The Co 3 O 4 /Ni(OH) 2 arrays present an open cellular nanostructure with ultrathin Ni(OH) 2 walls. The Co 3 O 4 /Ni(OH) 2 prepared by hydrothermal reaction of 12 h delivers a super-high specific capacitance of 4396 F g −1 at 1 A g −1 , above the theoretical capacitances of both the Ni(OH) 2 and Co 3 O 4 . Additionally, the Co 3 O 4 /Ni(OH) 2 electrode shows an excellent cycle performance by retaining 80.1% after 5000 cycles and a stable rate capability by decreasing 21.1% from 1 to 10 A g −1 . The assembled asymmetric supercapacitor reaches a large energy density of 32 Wh kg −1 at 7999 W kg −1 by Co 3 O 4 /Ni(OH) 2 as anode and reduced graphene oxides as cathode. The prominent high-capacity performance can be attributed to the cellular arrays, ultrathin hybrid NSs and synergetic reactions of the Ni(OH) 2 and Co 3 O 4 . The proposed technology is also suitable for producing other multi-component oxide/hydroxide arrays as electroactive materials for energy storage devices.
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）