APPLIED CATALYSIS B-ENVIRONMENTAL
·
2022
·
IF 24.319
Aiqun Kong,Mao Peng,Menghui Liu,Ye Lv,Houjun Zhang,Yusheng Gao,Jing Liu,Yan Fu,Wei Li,Jinli Zhang
Herein, we developed a novel and simple strategy to construct Pt-decorated TiO 2 /β-Ni(OH) 2 nanosheet arrays that steadily deliver large current densities in alkaline electrolyte. It is of great interest to find that the versatile role of few-layered Ti 3 C 2 endows the unique growth mechanism of Pt/TiO 2 /β-Ni(OH) 2 . It is worth noting that the interconnected array electrode exhibits noticeable hydrogen evolution reaction (HER) performance, achieving ultralow overpotentials of 107, 145 and 184 mV at high current densities of 500, 1000 and 1500 mA cm −2 , respectively, which outperforms most reported HER electrocatalysts. It requires only 1.95 V to drive 1000 mA cm −2 towards full water electrolysis along with considerable stability. It is demonstrated for the first time that the synergistic effect of Pt and TiO 2 /Ni(OH) 2 the enhanced HER performance. This work reports a robust nanoarray support for Pt electrocatalyst to break through its intrinsic barrier in alkaline HER and under large current density.
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高影响因子
ADVANCED MATERIALS
·
2018
·Vol. 30
·期 9
·1705366
·
IF 21.95
Dan Wu,Yicheng Wei,Xiang Ren,Xuqiang Ji,Yiwei Liu,Xiaodong Guo,Zhiang Liu,Abdullah M. Asiri,Qin Wei,Xuping Sun
It is highly desired but still remains challenging to design and develop a Co-based nanoparticle-encapsulated conductive nanoarray at room temperature for high-performance water oxidation electrocatalysis. Here, it is reported that room-temperature anodization of a Co(TCNQ) 2 (TCNQ = tetracyanoquinodimethane) nanowire array on copper foam at alkaline pH leads to in situ electrochemcial oxidation of TCNQ − into water-insoluable TCNQ nanoarray embedding Co(OH) 2 nanoparticles. Such Co(OH) 2 -TCNQ/CF shows superior catalytic activity for water oxidation and demands only a low overpotential of 276 mV to drive a geometrical current density of 25 mA cm −2 in 1.0 m KOH. Notably, it also demonstrates strong long-term electrochemical durability with its activity being retrained for at least 25 h, a high turnover frequency of 0.97 s −1 at an overpotential of 450 mV and 100% Faradic efficiency. This study provides an exciting new method for the rational design and development of a conductive TCNQ-based nanoarray as an interesting 3D material for advanced electrochemical applications.
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ACS Applied Materials & Interfaces
·
2025
·
IF 8.2
Kun Lang,Yuanyingxue Gao,Xudong Xiao,Qi Li,Mingyang Liu,Jianan Liu,Huiquan Gu,Wei Wu,Huiyuan Meng,Baojiang Jiang
Seawater electrolysis offers a sustainable pathway for green hydrogen production, but chloride-induced side reactions, particularly chlorine evolution (ClER), limit the stability and efficiency of catalysts. Based on an interface-engineering strategy, a bifunctional CoP–MXene electrocatalyst was designed and fabricated, in which electrons are transferred from the Ti sites of the MXene support to the adjacent Co active centers of CoP. This directional electron donation modulates the Co electronic structure, generating electron-rich Co sites that effectively suppress Cl– adsorption via electronic repulsion while preserving the OH– reaction pathways through favorable proton–electron coupling. X-ray absorption fine structure (XAFS) spectroscopy, in situ Raman spectroscopy, and density functional theory (DFT) calculations further validate this electron modulation mechanism. In 1 M KOH electrolyte, CoP–MXene achieves a hydrogen evolution reaction (HER) overpotential of only 93 mV at 10 mA cm–2 and an oxygen evolution reaction (OER) current density of 50 mA cm–2 at 346 mV. In alkaline seawater, CoP–MXene exhibits exceptional HER performance (10 mA cm–2 @ 101 mV). Moreover, in an anion exchange membrane (AEM) electrolyzer (at 2 A cm–2 current density), the catalyst maintains over 500 h of stability in seawater with only 8.5% current decay, significantly outperforming the control samples. This study provides a new design strategy for the development of chloride-resistant electrocatalysts, advancing the application of seawater electrolysis technologies.
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PubMed
高影响因子
DALTON TRANSACTIONS
·
2017
·Vol. 47
·期 2
·348-356
·
IF 4.029
Hao Xu,Dongsheng Dai,Songsong Li,Lei Ge,Yangqin Gao
Semiconductor-based photocatalytic hydrogen evolution from water with earth-abundant and low cost co-catalysts has attracted much attention. Herein, novel Cu2(OH)2CO3 decorated 2D TiO2 nanosheets for photocatalytic water splitting were synthesized by a facile in situ synthetic method. The chemical and photophysical properties of Cu2(OH)2CO3/TiO2 nanosheets were investigated by X-ray diffractometry (XRD), transmission electron microscopy (TEM), UV-vis diffusion reflectance spectroscopy (DRS), X-ray photoelectron spectroscopy (XPS) and cyclic voltammetry (CV) analysis. At an optimal Cu2(OH)2CO3 loading content of 1.5 mol%, the hybrid photocatalyst delivers a high photocatalytic H2 production rate of 1555.07 μmol g−1 h−1. Such enhanced photocatalytic activity is attributed to tight interfaces formed between Cu2(OH)2CO3 nanoparticles and TiO2 nanosheets, which play a vital role in the separation of photo-excited carriers, and the formation of active Cu1+ and Cu0 species can also benefit the charge separation process by reducing the over-potential of water reduction. Based on the above results, a possible mechanism is proposed and further verified using photoluminescence (PL) spectra. This work may provide more insight into the synthesis of novel Cu2(OH)2CO3/TiO2 nanosheets with high photocatalytic H2 evolution activity for solar-to-chemical conversion and utilization.
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高影响因子
COMPOSITES PART B-ENGINEERING
·
2018
·
IF 4.92
Nadia Taloub,Abdelkhalek Henniche,Li Liu,Jun Li,Nahla Rahoui,Mohammad Hegazy,Yudong Huang
The pursuit of improving the performance of rigid-rod polymeric fibers using a new inorganic nano-materials and efficient methods is very attractive topic. The combination of the unusual properties of both materials could definitely produce an outstanding final product. Herein, we proposed a simple grafting method of a graphene-like titanium carbides Ti 3 C 2 (OH) 2 nanosheets (MXene) onto PIPD surface via covalent bond by using (3-Aminopropyl) triethoxysilane (APTES) as a bridging agent. The surface morphology and element compositions of PIPD fiber before and after grafting were characterized, and the effect of such treatment on the mechanical properties was also evaluated. The IFSS of the PIPD-Ti 3 C 2 (OH) 2 was highly increased by 61.54% because of the significant improvement the fiber/epoxy interaction and surface wettability . Though the tensile strength (TS) was slightly decreased by only 5%. Furthermore, the experiment results showed a great enhancement of UV and hydrothermal aging resistance of the grafted fibers comparing with untreated ones by 33% and 25% respectively.
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高影响因子
JOURNAL OF SOLID STATE ELECTROCHEMISTRY
·
2017
·Vol. 21
·期 12
·3611-3618
·
IF 2.316
Luo Rongjie,Lu Yang,Hou Xiaoyi,Yu Qiuhong,Peng Tao,Yan Hailong,Liu Xianming,Kim Jang-Kyo,Luo Yongsong
Composites consisting of selenium/carbon (Se/C) encapsulated by ultra-thin Ni(OH) 2 nanosheet shell are synthesized as cathode for high-performance lithium-selenium batteries. The Se/C-Ni(OH) 2 cathode presents excellent discharge capacities and cyclic stability with almost 100% Coulombic efficiencies. It delivers a reversible capacity of 323 mAh g −1 after 300 cycles with almost negligible capacity degradation after 100 cycles at a high current density of 1 C. Several unique functional features of the composite electrodes are responsible for the findings. The uniform mixture of Se and carbon black in the composite promotes the utilization of the active materials with enhanced ion/electron transfer. The Ni(OH) 2 nanosheets maintain the integrity of Se/C core during cycles, reducing the shuttling effect reactions of polyselenides. These results demonstrate that the Se/C-Ni(OH) 2 composite cathode is a promising candidate for application in rechargeable lithium-selenium batteries.
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高影响因子
CHEMISTRY-A EUROPEAN JOURNAL
·
2021
·Vol. 27
·期 55
·13819-13827
·
IF 5.236
Pan Liang,Wen-Li Lian,Zhi-Hong Liu
Highly efficient inorganic phosphors are crucial for solid-state lighting. In this paper, a new method of low-temperature self-reduction was used for preparing a highly efficient deep blue-emitting phosphor of Ca[B 8 O 11 (OH) 4 ] : Eu 2+ (CBH : Eu 2+ ). The crystal structure, morphology, chemical state, and photoluminescence (PL) properties of the CBH : Eu 2+ phosphor have been investigated. By using the screened hybrid function (HSE06), the band gap ( E g ) of CBH was calculated to be 7.48 eV, which is a necessary condition for achieving high quantum yield phosphors. The experiment results show that almost all the added raw materials of Eu 3+ can be reduced to Eu 2+ in CBH crystal under a non-reducing atmosphere. The CBH : Eu 2+ phosphor shows a broad excitation spectrum centered at 277 and 327 nm in the range of 220 to 400 nm, and a narrow-band emission spectrum centered at 428 nm in the range of 400 to 500 nm, with a full width at half maximum (fwhm) of 42.35 nm. Under UV radiation, the CBH : 2 %Eu 2+ exhibits high photoluminescence quantum yield (PLQY=95.0 %), high external quantum efficiency (EQE=31.1 %), and ultra-high color purity (97.6 %). The PL intensity of CBH : 2 %Eu 2+ remains 62.6 % of the initial intensity at 150 °C. Finally, the white light-emitting diodes (WLED) fabricated by CBH : 2 %Eu 2+ , excited by a 365 nm chip, presents outstanding performances with a luminous efficacy (LE) of 13.9 lm/W, a color rendering index (CRI) of 89.4, and a correlated color temperature (CCT) of 5825 K. The above results show that CBH : Eu 2+ can be used as a promising blue phosphor for WLED. This new method of low-temperature self-reduction can be applied to design and prepare other new types of highly efficient phosphors. Graphical Through a new method of low-temperature (only 350 °C) self-reduction, a highly efficient deep blue-emitting phosphor Ca[B 8 O 11 (OH) 4 ] : Eu 2+ was prepared, with a high PLQY of 95 % and a color purity of 97.6 %. Then, a WLED fabricated by the as-prepared CBH : 2 %Eu 2+ presents outstanding performance with a luminous efficacy (LE) of 13.9 lm/W, a color rendering index (CRI) of 89.4, and a correlated color temperature (CCT) of 5825 K.
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Sustainable Chemistry and Pharmacy
·
2026
·
IF 6.7
Deyang Zhao,Xinyu Zhao,Qikai Si,Kongde Li,Huawei Yang,Christophe Len
γ-valerolactone (GVL) is a renewable and sustainable platform chemical derived from biomass, with broad applications in chemical synthesis and energy-related fields. Consequently, the development of efficient strategies for GVL production has attracted significant attentions. In this study, the hydrogenation of ethyl levulinate (EL) to GVL was investigated using copper-cobalt basic carbonate, (CoCu) 2 (OH) 2 CO 3 , as a catalyst. The influence of different substrates—including esters and acids such as EL, GVL, ethyl acetate (EA), and levulinate acid (LA)-on catalyst recyclability and performance was systematically evaluated. Among the substrates tested, EL exhibited the most favorable behavior, delivering a GVL yield of up to 96% in the second recycling cycle under optimized conditions. This superior performance is attributed to the synergistic interaction between the basic sites of the catalyst and the ability of metallic Cu to activate hydrogen, as well as the formation of larger metal particle clusters when EL is used as the substrate. Notably, the catalytic activity remained largely preserved even after the third recycling cycle. In contrast, when GVL was sued as the substrate, moderate yields were obtained, accompanied by the formation of surface coatings on the catalyst particles. Furthermore, both EA and LA induced varying degrees of catalyst etching, resulting in a drastic loss of activity, with negligible catalytic performance observed in the second cycle. These findings indicate that catalyst deactivation due to etching has a more pronounced impact on catalytic performance than structural changes associated with bimetallic cluster formation. This observation indirectly highlights the critical role of basic sites in maintaining catalytic activity during the hydrogenation process.
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高影响因子
CHINESE JOURNAL OF CHEMICAL ENGINEERING
·
2026
·
IF 3.5
Jiaojiao Yu,Yi Zuo,Gudan Li,Bosong Zhang,Hong Yang,Xinyue Wang,Xinwen Guo
PO 4 3- assists the one-step synthesis of highly active TS-1 containing Ti-VI species. • PO 4 3- induces plate-like TS-1 morphology and creates hierarchical micropores. • Ti-VI is constructed by Ti-O-PO 4 x- intermediate from bonding of Ti-OH with PO 4 3- . • TS-MAP-0.2 doubles the activity for 1-hexene epoxidation than additive-free TS-1. Titanium silicalite-1 (TS-1) is an efficient and green oxidation catalyst that has been employed in various industrial processes. In our previous work, a highly active TS-1 catalyst bearing Ti(OSi) 2 (OH) 4 (Ti-VI) was successfully prepared via post-treatment with alkaline solutions. Herein, a novel synthesis strategy is developed using monoammonium phosphate (MAP) as a regulator to fabricate thin TS-1 crystals with Ti-VI species, eliminating the complicated post-treatment operations. The study reveals that although the added phosphate anion (PO 4 3- ) is not incorporated into the MFI framework, it significantly affects the crystallization behavior of TS-1 during the synthesis. Essentially, PO 4 3- exerts two functions. First, it regulates the Ti species in the resulting TS-1 by forming Ti-O-PO 4 x - intermediates which not only promotes the formation of Ti-VI but also the construction of large micropores (0.7−0.8 nm) around Ti atoms in TS-1. Furthermore, PO 4 3- induces the formation of plate-like crystal morphology of TS-1. The obtained TS-1 catalyst exhibits remarkably enhanced catalytic performance in 1-hexene epoxidation, which is ascribed to the concurrent o ptimization of its intrinsic catalytic activity and mass transfer diffusion properties. Download: Download high-res image (354KB) Download: Download full-size image
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CRYSTENGCOMM
·
2026
·
IF 2.4
Qi Chen,Hongwei Duan,Yan Song,Yaning Guo,Hongge Zhang,Feng Zhang,Xiaobin Hu,Yinfeng Han
The rational design of hierarchical Co-Ni-Fe-based inorganic materials is of great significance for functional electrochemical applications. Here, a self-supported Co2(OH)2CO3@CoFe-LDH hierarchical heterostructure was constructed in-situ on a conductive nickel foam substrate via a one-step hydrothermal method. A prominent structural feature is that Co2(OH)2CO3 nanoneedles are uniformly and radially anchored on the surfaces of CoFe-LDH nanosheets, which effectively suppresses nanoneedle aggregation. By systematically tuning the Co2+/Fe3+ molar ratio, the effects of composition on phase selectivity, nucleation behavior, and morphological evolution in the multimetallic system were elucidated. The results reveal that CoFe-LDH nanosheets preferentially form at moderate Co2+/Fe3+ ratios, whereas further increasing the Co2+ content leads to heterogeneous nucleation of excess Co2+ species on the LDH surface and induces the directional growth of Co2(OH)2CO3, thereby giving rise to the hierarchical heterostructure. The resulting self-supported electrode exhibits stable oxygen evolution reaction performance under alkaline conditions. In situ Raman spectroscopy reveals a potential-dependent surface reconstruction, evidenced by the attenuation of precursor-related metal-oxygen vibrations and the formation of (oxy)hydroxide species at the heterointerfaces, highlighting the correlation between multimetallic composition regulation and interfacial structural evolution.
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高影响因子
Surfaces and Interfaces
·
2026
·
IF 6
Hui Zhou,Bingxin Zhu,Xiang Li,Baolei Liu,Zhigang Liu,Shihua Yu
To recover the high value-added pharmaceutical intermediate tenofovir from wastewater efficiently and conveniently, a tailored magnetic composites of Fe 3 O 4 @SiO 2 @La(OH) 3 have been prepared via solvothermal and in-situ reduction methods. It exhibits the ability to remove tenofovir with high efficiency and easily separated from matrix. Batch sorption experiments demonstrated that Fe 3 O 4 @SiO 2 @La(OH) 3 can remove tenofovir with the maximum adsorption capacity of 64.53 mg/g, the largest removal of 93.07%, and fast equilibrium time of 5 min. The kinetics of tenofovir adsorption on the magnetic composite is in line with the pseudo-second-order model, while the isotherm is fitted well by the Langmuir model, and thermodynamic parameters represent that adsorption process is spontaneous and endothermic. Moreover, the saturated Fe 3 O 4 @SiO 2 @La(OH) 3 have been desorbed by mechanical stirring with the high desorption rate of 93.02%, and the adsorption capacity maintaining 47.72 mg/g after five cycles. Importantly, the composites can be used for tenofovir removal from crude extracts of pharmaceutical wastewater, with an adsorption capacity of 51.61mg/g in 5 min. Finally, the adsorption mechanisms are explored by pH experimental evidence and XPS analysis, which show that mainly involve electrostatic attraction and the inner-sphere complexation between La(OH) 3 and phosphate groups of tenofovir via ligand exchange. All the results prove that the proposed tenofovir recovery technique, providing new ideas for the recovery of high value-added substances and waste resources rationalization of the application of development. A magnetic Fe 3 O 4 @SiO 2 @La(OH) 3 was synthesized and realized the recovery of tenofovir with high economic value in pharmaceutical wastewater crude extracts. Download: Download high-res image (249KB) Download: Download full-size image
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高影响因子
POLYMER
·
2026
·
IF 5.1
Meng Ma,Dezhong Wang,Yan Liao,Sicheng Huang,Si Chen,Yanqin Shi,Huiwen He,Yulu Zhu,Xu Wang
Cellulose nanofibers (CNF) feature a three-dimensional nanofiber network, excellent mechanical properties, and abundant surface hydroxyl groups, facilitating the integration of boron nitride (BN) for fabricating flexible composite films with high thermal conductivity. However, achieving a balance between high thermal conductivity and strong mechanical strength at high BN loadings remains a formidable challenge. A mussel-inspired strategy is employed, in which BNNS-OH and CNF are coated with polydopamine (PDA) to improve their interfacial adhesion and compatibility. The PDA-BNNS-OH is then silanized with 3-aminopropyltriethoxysilane to acquire a positive charge, enabling its subsequent electrostatic adsorption onto PDA-CNF and assembly into a robust film. At a high filler loading of 60 wt%, the resultant composite film achieves an outstanding in-plane thermal conductivity of 18.9 W m −1 K −1 , a 1250% improvement relative to the pure CNF film. Remarkably, this marked enhancement is achieved without compromising the film's high electrical insulation capability, as evidenced by a volume resistivity exceeding 10 11 Ω m, while still delivering a substantial tensile strength of 49.5 MPa. These synergistic enhancements are attributed to the optimized interfacial bonding, which effectively reduces thermal resistance and suppresses phonon scattering. This interface design strategy offers a promising pathway for developing advanced thermal management materials.
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