BIOMASS & BIOENERGY
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2024
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IF 5.8
Zhenjing Jiang,Wuyu Wang,Xuelai Zhao,Xinghua Zhang,Qi Zhang,Longlong Ma
Production of jet fuel is not only promising but challenging in the field of biomass utilization. Here we proposed a novel route to produce highly branched alkanes with ultra-low freezing point using n-butyraldehyde as feedstock by self-aldol condensation and subsequent hydrodeoxygenation (HDO). The catalyst characterization revealed that the MgO-SiO 2 catalyst played an acid-base synergetic effect role in the self-aldol condensation of n-butyraldehyde using n-butanol as solvent, which obtained C8 oxygenate and C12 oxygenate with yield of 69.3 % and 26.8 % respectively. The medium Brønsted base site of the catalyst captured α-H to promote the formation of enolate from n-butyraldehyde, and the Lewis acid sites promoted the dehydration of intermediate products. DFT simulation showed that n-butanol activated α-C in enolate in aldol condensation, and deactivated the oxygen atoms in enolate by hydrogen bonds to inhibit side reactions. Finally, the obtained condensation products were subjected to HDO reaction over the 5 wt% Pd/C and HZSM-5 catalysts, obtaining the highly branched alkanes with an ultra-low freezing point of -120.7 °C for C8 alkane and -78.7 °C for C12 alkane suitable for bio-jet fuels.
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Energy Storage Materials
·
2024
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IF 18.9
Lilian Wang,Li Yang,Xinyu Zhao,Hang Ma,Bohuai Pang,Lingyan Duan,Kun Zeng,Lu Liu,Anran Chen,Hong Guo
The strong perturbation of the valence band within the entire material system and accelerated *OH dissociation from Fe site are triggered by incorporating CrN 4 moiety with low Fenton effect and *OH adsorption energy. This atomically dispersed Cr=N 2 =Fe electrocatalyst is developed by adopting a super time-/energy-saving Joule heating strategy (∼ 10 s). Through the investigation of valence orbital energy levels and valence electron behavior for the prepared catalysts, in combination with in-situ Raman testing and theoretical calculations, we have determined that the interaction between the metal sites and oxygen-containing intermediates primarily depends on orbital energy levels before being further evaluated by bond order involving electronic modulation. This finding may offer a valuable insight for future research in related electrocatalysis fields. The Cr=N 2 =Fe catalyst exhibits higher ORR catalytic capability than commercial Pt/C, thus driving stable operation of the assembled zinc-air battery for over 300 h.
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BIOMASS & BIOENERGY
·
2025
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IF 5.8
Jiapeng Zhang,Wuyu Wang,Linfei Zhou,Xinghua Zhang,Longlong Ma
The synthesis of high-performance jet fuel from biomass presents a solution to energy crises and environmental pollution. This paper introduces a novel strategy for producing jet fuel with a high heat sink and low freezing point using bio-derived phenol and ethanol. The production route comprises two successive steps: the alkylation of phenol with ethanol, followed by hydrodeoxygenation (HDO), catalyzed by Hβ zeolite and Pt/C, respectively. The alkylation conditions were optimized at 260 °C for 8 h, achieving phenol conversion rates exceeding 95 % and yielding 88.7 % alkylphenol at a phenol to ethanol molar ratio of 1:3. The final HDO products consisted of 20.25 % monoethylcyclohexane, 44.87 % diethylcyclohexane, and 28.32 % triethylcyclohexane. These products demonstrated a heat sink capacity of 3.3 MJ/kg, a freezing point below −65 °C, a heat value of 45.4 MJ/kg, and a density of 0.82 g/cm 3 at 20 °C, surpassing the performance metrics of conventional JP-8 fuel. Kinetic studies on the alkylation revealed activation energies of 58.36 kJ/mol for O-alkylation and 122.07 kJ/mol for C-alkylation. The findings contribute to understanding the mechanisms of alkylation reactions between phenolic compounds and short chain alcohols. This work offers a straightforward and energy-efficient way to synthesize high-performance jet fuel from lignocellulosic derivatives, reducing processing energy consumption and enhancing feedstock utilization rates.
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2025
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IF 5.4
Feng Chen,Junshuang Zhou,Wenfeng Peng,Xiaowen Feng,Zikang Zhao,Yubin Yuan,Tianshuo Wang,Faming Gao
The development of efficient and durable non-precious metal catalysts for hydrogen evolution reaction (HER) remains a significant challenge. In this work, we present a novel approach combining heterojunction and structural engineering to enhance HER performance. A NiO/Ni layer with a heterogeneous structure is grown on CuO nanorod arrays supported by copper foam. This 3D nanostructure increases the density of active sites, improves mass and electron transport, and accelerates HER kinetics. The rough surface also facilitates rapid bubble release, enhancing catalyst stability under high currents. As a result, the CuO@NiO/Ni catalyst exhibits excellent HER performance, with overpotentials of 86.5 and 198.8 mV at 100 and 500 mA cm −2 , respectively. Additionally, a two-electrode electrolytic cell using CuO@NiO/Ni and NiFe LDH achieves 500 mA cm −2 at only 1.64 V and maintains excellent stability over 100 h. These findings highlight the potential of CuO@NiO/Ni as a highly efficient, stable catalyst for industrial-scale water electrolysis, and provide a promising approach to addressing the challenges of non-precious metal-based HER catalysts in industrial settings.
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ACS Applied Polymer Materials
·
2025
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IF 4.7
Tianping Wang,Yining Liang,Jingle Wang,Xikui Liu,De Ning,Zhengjian Chen
Covalent organic polymers have emerged as promising platforms with tailorable structures for electrocatalytic oxygen reduction reaction (ORR). However, their catalytic activities are often limited by dense stacking and low conductivities. Herein, we report an arylamine-linked iron-phthalocyanine (AAm-FePc) in situ grown on Ketjenblack (KB) (AAm-FePc/KB) via a condensation reaction between 2,9,16,23-tetraaminophthalocyaninato iron and dimethyl succinyl succinate. Characterizations reveal that AAm-FePc is uniformly distributed on the surface of KB, which provides a large accessible surface area and efficient electrical conductivity. Owing to abundant arylamine linkages present in the skeletons and precisely designed highly active Fe–N4 sites, the AAm-FePc/KB catalyst exhibits excellent ORR characteristics in alkaline media, including a half-wave potential of 0.883 V, fast kinetics (Tafel slope = 33 mV dec–1), a nearly four-electron reduction pathway and excellent methanol resistance and electrochemical stability. The AAm-FePc/KB-catalyzed Zn–air battery exhibits a high power density (177.8 mW cm–2), a large specific capacity (727 mAh g–1), and outstanding cycling stability (375 cycles, 125 h), which are superior to those of commercial Pt/C catalyst.
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Small
·
2025
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IF 12.1
Zuobo Yang,Xiaokuan Wu,Leilei Cai,Yaqi Cao,Zandong Zhang,Xin Teng,Chaoyang Li,Jiayi Wang,Jimmi Yun,Jie Zhang,Xin Liang,Hong Zhao
This study focuses on the development of high-performance and durable supported iridium-based catalysts. Mesoporous antimony tin oxide (ATO) supports with high conductivity, high specific surface area, and rich in oxygen vacancies is prepared by employing a Pt-catalyzed oxidation of carbon template removal approach. The pore sizes of mesoporous ATO supports are tuned from 5 to 12 nm by adjusting the template removal temperature. These supports, used for IrO 2 substrates, improved ultrahigh OER performance, both catalytic activity and mass transfer, demonstrated excellent Proton exchange membrane water electrolysis (PEMWE) performance with a 0.3 mg cm −2 of Ir loading, with a polarization performance of 1.75V@2A cm −2 . Simultaneously, the ATO-supported catalysts demonstrated outstanding performance even at ultra-low loadings owning to the ATO mesoporous structure and surface oxygen-vacancy, achieving 1.8V@2A cm −2 with an Ir loading of 0.05 mg cm −2 . Density functional theory (DFT) computations revealed the strong oxide-support interaction (SOSI) between the IrO 2 and ATO. This research not only validates the effective role of conductive ATO in supported iridium-based catalysts but also provides valuable guidance on the influence of support pore structure to the supported iridium-based catalysts. It offers a new perspective for the development of supported low-iridium OER catalysts.
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ChemSusChem
·
2025
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IF 6.6
Yue Wang,Han Qin,Xiangming Wang,Feng Yan,Yang Zhao,Xianbo Yu
Graphical A hierarchical heterostructure consisting of amorphous FeNi(OH) X nanosheets electrodeposited on crystalline Ni 3 S 2 scaffolds with abundant catalytic active sites and superior electronic conductivity is reported to enhance its catalytic activity and long-term stability for overall water splitting. The advancement of inexpensive and productive bifunctional electrocatalysts for overall water splitting is essential for achieving hydrogen energy production. Herein, a hierarchical heterostructure catalyst composed of amorphous FeNi(OH) X nanosheets supported on a crystalline Ni 3 S 2 scaffold, which is anchored to nickel foam through a combined hydrothermal-electrodeposition strategy, is reported. The crystalline Ni 3 S 2 framework exhibits metal-like electrical conductivity and optimized hydrogen adsorption kinetics, while the amorphous FeNi(OH) X overlayer offers abundant adaptive active sites that enhance oxygen evolution reaction (OER) activity. The interfacial charge redistribution decreases the activation energy required for water splitting and accelerates the proton-coupled electron transfer process. Electrochemical tests demonstrate that the catalyst achieves performance at a current density of 10 mA cm −2 , with hydrogen evolution reaction (HER) and OER overpotentials as low as 78 and 183 mV, respectively. In addition, an alkaline electrolyzer assembled with this catalyst serving as both cathode and anode can sustain a current density of 10 mA cm −2 with only 1.51 V and keep a long-term stability exceeding 100 h, surpassing the performance of commercial Pt/C||IrO 2 systems. This study provides a design paradigm that integrates conductive crystalline frameworks with amorphous layers, addressing the tradeoff between conductivity and catalytic multifunctionality in nonprecious metal electrocatalysts.
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JOURNAL OF ALLOYS AND COMPOUNDS
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2025
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IF 6.3
Wen Wu,Ying Peng,Lingmiao Fang,Yawen Xuan,Huamei Tong,Deli Jiang
Constructing innovative heterostructured electrocatalysts with robust alloy-oxide interfaces are essential for hydrogen production. In this work, a strongly and abundantly coupled interfacial electrocatalyst comprising of CoRu nanoalloys anchored on W-CoO nanosheet (CoRu/W-CoO/NF) was synthesized by Co-MOF template conversion and hydrogen treatment methods. The strongly coupled interface between CoRu alloy particles and W-CoO nanosheets efficiently induce a charge redistribution at the interface which can modulate the electronic structure and optimize the adsorption of hydrogen intermediate, thereby significantly enhancing the HER activity. The obtained CoRu/W-CoO electrocatalyst exhibited excellent hydrogen evolution reaction (HER) catalytic performance with an overpotential of 31 mV at 10 mA cm –2 and excellent catalytic durability for 50 h. Moreover, the voltage of the two-electrode system assembled with CoRu/W-CoO and NiFe-LDH at a current density of 10 mA cm –2 is only 1.51 V, which is almost comparable to the assembled Pt/C||RuO 2 . This work paves the path for integrating metal alloys with W-doped transition metal oxide electrocatalysts for efficient hydrogen production.
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CHEMICAL ENGINEERING JOURNAL
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2025
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IF 13.2
Fang Liu,Shiqing Zhang,Shaokai Ma,Zihang Cao,Ying Li,Yuanhui Ma,Xuewen Xu,Jun Zhang,Yanming Xue,Chengchun Tang
Hydrogen spillover in supported metal electrocatalysts has garnered considerable attention due to its potential to bypass the constraints set by the Sabatier principle and improve the performance of hydrogen evolution reaction (HER) processes. Nonetheless, reducing the energy barriers associated with hydrogen spillover remains a challenge. In this study, we designed a boron carbon nitride (BCN) material as a support for Pt (Pt/BCN), aiming to lower the reaction barriers of hydrogen spillover and serve as an efficient HER electrocatalyst in acidic media. In the HER process, Pt/BCN achieved 10 mA cm −2 at 26 mV, with a Tafel slope of 24 mV dec −1 , and also demonstrated outstanding stability. Electrochemical analyses, in-situ Raman spectroscopy, and density functional theory calculations demonstrated that adsorbed H* species migrate from Pt to BCN via a hydrogen spillover mechanism, thereby accelerating the H* desorption kinetics. Furthermore, applied as the cathode in a proton exchange membrane electrolyzer, Pt/BCN achieved 0.5 A cm −2 at a cell voltage of 1.67 V and maintained stable operation for over 60 h. This study provides new insights into developing efficient HER electrocatalysts for acidic media by optimizing hydrogen spillover effects.
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CHEMICAL ENGINEERING JOURNAL
·
2025
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IF 13.2
Jiawei Li,Yunpeng Wang,Changzhou Chen,Xinyu Cao,Liancen Li,Yihao Xu,Ruyu Zhang,Jinli Chen,Minsheng Lu,Douyong Min,Guangfu Qian
To address the intrinsic activity and stability limitations of nickel-based heterojunction catalysts in the urea oxidation process (UOR) and the hydrogen evolution reaction (HER) under strongly alkaline conditions, a sulfur-doped lignin-derived carbon-encapsulated NiCo@MoO 2 heterostructure (NiCo@MoO 2 /SC) as a bifunctional catalyst is engineered. The physical properties, electrochemical characterization, and simulation results demonstrate that the built-in electric field at the triphasic interface synergistically optimizes the electronic structure of NiCo@MoO 2 /SC, enhancing the UOR process by rapidly generating the NiOOH active site. Meanwhile, charge redistribution in this heterostructure activates ortho‑carbon in the sulfur-doped carbon as HER active sites, significantly enhancing the HER process. Consequently, NiCo@MoO 2 /SC delivers exceptional catalytic activity in both UOR ( E 10/500/1000 = 1.26/1.38/1.40 V) and HER ( E −10/−500/−1000 = −27/−216/−288 mV). Besides, the carbon-encapsulated strategy improves corrosion resistance to enhance chemical stability, while the micro-nano array structure with the superhydrophilic/superaerophobic surfaces facilitates gas-liquid desorption to boost mechanical stability, enabling stable operation at ±1000 mA cm −2 for 100 h, even in a two-electrode system. This study proposes a viable approach to designing efficiency bifunctional electrocatalysts for urea electrolysis, while broadening the prospects of high-value utilization in biomass-derived carbon materials.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2025
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IF 9.7
Bingbing Qiu,Yanfang Wang,Donghui Zhang,Junhao Dai,Banglong Shen,Huaqiang Chu
Alkaline water electrolysis represents a viable technological approach for producing green H 2 . However, the inherent low electrical conductivity and the hindrance in the hydrogen evolution reaction (HER) have led to slow kinetics of water splitting. Especially for the nickel‑iron layered double hydroxide (NiFe-LDH) catalyst loaded on nickel foam (NF), which is regarded as a potential alkaline HER catalyst. In this work, a phosphide/phosphate (NiP 2 /(CoHPO 4 ) 2 ·3H 2 O) heterostructure modified NiFe-LDH hydrogen evolution catalyst (NiP 2 -CHPO/NiFe-LDH/NF) is designed by the hydrothermal-electrodeposition method. Benefiting from enhanced electron dynamics and abundant active sites, the hydrangea-like biomimetic structure of the NiP 2 -CHPO/NiFe-LDH/NF catalyst exhibits outstanding HER catalytic activity. At 10 mA cm −2 , the HER overpotential is 74 mV, and the catalyst exhibits excellent stability for 35 h. In-situ infrared spectroscopy analysis reveals that the optimized interfacial water structure of NiP 2 -CHPO/NiFe-LDH/NF is the key factor for its enhanced performance. Theoretical calculations further confirm that the synergistic charge reconstruction effect of NiP 2 -CHPO and the rapid H ⁎ adsorption-desorption kinetics on the surface collectively contribute to the superior HER activity. This work demonstrates an efficient synthetic method for expanding the variety of phosphide/phosphate heterojunctions and provides new ideas for optimizing the hydrogen evolution efficiency of transition metal catalysts.
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BIOSENSORS & BIOELECTRONICS
·
2025
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IF 10.5
Yan Dong,Wenzheng An,Yongbin Zhang,Zehao Kang,Botao Gao,Juntai Lv,Yixuan Jiang,Chang Niu,Yuling Mao,Dongzhi Zhang
Wearable biochemical sensors enabling non-invasive monitoring of biomarkers in bodily fluids play a pivotal role in advancing personalized healthcare. The state-of-the-art wireless and wearable biochemical sensors still suffer from large form factors, poor detection accuracy due to sample-to-sample variation, short and weak wireless communication, and difficulty to integrate with data processing algorithm on a system level. To solve these problems, this work develops an all-range wireless and wearable biochemical sensing platform which can be integrated in a diaper for monitoring four urine biomarkers (dimethylamine, creatinine, glucose, and H + ) with two switchable wireless modes. To simplify the circuit design and reducing the form factor of the wearable sensing platform, this work develops flexible and passive potentiometric sensing interfaces for dimethylamine and creatinine detection by developing high-performance ion-selective electrode (ISE) with customized molecularly imprinted polymers (MIPs) as ionophores. The narrowband Internet of Things (NB-IoT) far-field wireless mode enables remote, and concurrent monitoring of urine biomarkers with a working range up to tens of kilometers, while the LC resonance near-field wireless mode is capable of battery-free and intermittent detection of urine biomarkers. The wearable sensor can be easily switched between the NB-IoT far-field wireless mode and the near-field wireless mode to fit different application scenarios. The wireless sensing platform enables system level integration of the wearable biochemical sensor with a multilayer perceptron data calibration system for data auto-calibration, which reduces the errors caused by varying pH and thus improves the detection accuracy, enabling deeper AI-wearable biochemical sensor fusion for next-generation healthcare applications.
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