ChemCatChem
·
2025
·
IF 3.9
KunShan Ouyang,Mengyuan Qu,Liyan Xie,Zhishan Luo,Jianqin Chen,Jianhui Huang
CdIn 2 S 4 /In(OH) 3 heterojunctions were constructed via a scalable ultrasonic spray pyrolysis method combined with H 2 O 2 -enabled in situ etching, in order to address the issues of photocorrosion, scarce active sites, and rapid charge recombination observed in pristine CdIn 2 S 4 . The optimized heterojunction, achieved using 50 µL of H 2 O 2 , demonstrates a significantly enhanced H 2 evolution rate of 736 µmol g −1 h −1 , which is 12 times greater than that of pristine CdIn 2 S 4 , along with stable performance throughout three consecutive catalytic cycles. Structural and chemical analyses verify the formation of a closely integrated heterojunction interface, which facilitates improved charge separation and efficient electron transfer from CdIn 2 S 4 to In(OH) 3 , as further corroborated by electrochemical and photoluminescence studies. A possible mechanism for hydrogen evolution is also proposed. Graphical Constructing CdIn 2 S 4 /In(OH) 3 heterojunctions via in situ etching achieves a 12-fold enhancement in photocatalytic H 2 evolution with excellent stability, by enabling efficient electron transfer and charge separation.
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Materials Today Sustainability
·
2025
·
IF 7.9
Cengceng Du,Yasen Li,Zhenyu Wang,Lei Shi,Xin Chen,Chen Chen,Mingjie Jia,Die Shao,Liping Xie,Yongjian Ai,Hongbin Sun,Guangwen Xu
Efficient hydrogen generation via electrochemical splitting of water at elevated current densities is paramount for its market implementation. Yet, cathodic hydrogen generation, in practical applications, encounters issues such as polarization, which result in energy consumption and sluggishness, thereby limiting its further utilization. In light of this, we have proposed a method for preparing a self-supported Pt-Ni(OH) 2 catalyst-(Pt-Ni(OH) 2 /NF). Specifically, by employing NaBH 4 pretreatment on nickel species to form NiB and Ni 2 B an intermediate, a significant improvement in catalytic performance has been achieved, especially at high current density. The replacement reaction of nickel boride with H 2 PtCl 6 generates rigid strain, leading to the Ni(OH) 2 lattice shrinkage. Upon testing, this catalyst requires only a minimal overpotential of 3 mV to achieve a current density of 10 mA cm -2 , and it achieved an industrial current of 500 mA cm -2 with only 94 mV overpotential. Moreover, even after a 7-day longevity test at 200 mA cm -2 , it still maintained excellent performance.
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Journal of Materials Research and Technology-JMR&T
·
2025
·
IF 6.6
Zhenyu He,Chi Zhang,Xiaomeng She,Zhuanfei Liu,Zhaoyong Zou,Song Zhang,Hongwei Liu,Jian Peng,Rong Tu
The low corrosion resistance of magnesium alloys directly limits their applications in natural environments. In this work, a superhydrophobic and corrosion-resistant coating was prepared on AZ31 magnesium alloys using a combination of a sodium formate hydrothermal reaction and fluoroalkyl silane cross-linking. The hydrothermal treatment successfully generates a corrosion-resistant Mg(HCOO) 0·4 (OH) 1.6 coating on the magnesium alloy surface, which exhibits a multi-scale microstructure, such as nanoscale stacking and microscale nanoflowers. The low surface energy modification of this micro-nano rough surface with fluoroalkyl silane imparted superhydrophobic properties. The coating has a corrosion inhibition efficiency of 99.999 % based on the lowest corrosion current density, i.e.,1.23 × 10 −9 Acm −2 . Furthermore, the superhydrophobic coating maintains good corrosion resistance even after 30-day immersion in simulated seawater. The low frequency impedance remains 10 5 Ωcm 2 during the growth cycle of A. niger . The static contact angle of the coating is 151.4°, attributed to the high-density –CF 2 - and –CF 3 groups on the surface. This work provides new insights into the preparation of superhydrophobic coatings on AZ31 magnesium alloys to significantly enhance their corrosion resistance.
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ACS Applied Optical Materials
·
2025
·
IF 3.8
Huan Zhou,Meng Cheng,Zhihua Yang,Shilie Pan
Birefringent materials are crucial optical materials that enable the control of polarized light in optical technologies, yet achieving high birefringence in systems dominated by non-π-conjugated units in the deep-ultraviolet (UV) region remains a significant challenge. Herein, a birefringent material, [C(NH2)3]2PO3(OH), was successfully synthesized by integrating π-conjugated [C(NH2)3] units and heteroleptic tetrahedra [PO3(OH)]. The short UV cutoff edge (<200 nm) and large birefringence (0.086 @ 546 nm) make [C(NH2)3]2PO3(OH) a potential deep-UV birefringent crystal. This study provides the experience for the design of deep-UV optical crystals.
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FUEL
·
2025
·
IF 7.5
Yuyang Xue,Qi Li,Aijuan Xie,Shiping Luo
Water splitting is a key and efficient method for hydrogen production. A major hurdle in overall water decomposition is developing affordable, highly active electrocatalysts to boost hydrogen (HER) and oxygen (OER) evolution reactions. In this work, influence of sulfur/ phosphorus co-doping sequence on the performance of NiFe(OH) x catalyst on the surface of nickel foam (NF) for overall water splitting was investigated. The findings of the experiment indicate that NiFe 0.4 P 1.2 S 1.6 /NF exhibits an overpotential of 67 mV for HER and 106 mV for OER at 10 mA cm −2 . Additionally, the Tafel slopes are reported as 60.92 mV dec -1 and 18.87 mV dec -1 , correspondingly. Electrochemical impedance spectroscopy reveals that NiFe 0.4 P 1.2 S 1.6 /NF exhibits low R ct values: 0.88 Ω for HER and 2.58 Ω for OER. Furthermore, its electrochemical active surface areas measure 303.8 cm 2 (HER) and 121.25 cm 2 (OER). Stability and i-t curve tests confirm the robustness of NiFe 0 . 4 P 1 . 2 S 1 . 6 /NF in HER (86.43 % retention) and OER (75.07 % retention) over 10-hour durability tests, maintaining ∼ 87.11 % initial cell voltage. This sulfur-phosphorus codoping method presents a new strategy for efficient HER/OER electrocatalysts.
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高影响因子
MICROPOROUS AND MESOPOROUS MATERIALS
·
2017
·
IF 3.615
Xingzhong Guo,Pengan Yin,Hui Yang
Hierarchically porous composites constructed by ZnAl-Cl type layered double hydroxides (LDH) nanosheets and amorphous Al(OH) 3 nanosheets were synthesized via a facile sol-gel route for the adsorption of two typical anionic dyes Methyl Orange (MO) and Congo Red (CR) from aqueous solutions. The micro-macrostructure and adsorption properties of hierarchically porous ZnAl-LDH/Al(OH) 3 composites before and after calcination were investigated in detail. The adsorption mechanism and adsorption–desorption cycles were also discussed. Materials characterization confirm that the resultant hierarchically porous composites possess three-dimensional macrostructure with interconnected macropores and co-continuous skeletons constructed by ZnAl-LDH and Al(OH) 3 nanosheets . Calcination at 500 °C allows the transformation from LDH composite to layered double metal oxides (LDO), while the macrostructure is basically maintained with a macropore size of 0.5 μm, a porosity of 53.1% and a BET surface area as high as 122 m 2 g −1 . Adsorption performances show that hierarchically porous composites exhibit ultrafast adsorption rates and high adsorption capacities in the removal of anionic dyes CR and MO. The maximum adsorption capacities of hierarchically porous LDH-based composites and LDO composites via calcination at 500 °C are 2348.3 and 1574.4 mg g −1 for CR and 1013.5 and 1015.1 mg g −1 for MO, respectively. XRD and FTIR results after the dyes adsorption indicate that the intercalation of MO − and CR − anions into the LDH structure via ion exchange with the pristine chloride ions group and the attachment on the external Al(OH) 3 surface determine the adsorption behavior , thus leading to an expansion of the interlayer space . And the calcined products LDO-based composites can be reversibly transformed back into the LDH structure via reconstruction procedure in the presence of dyes aqueous solution. Furthermore, the adsorption–desorption cycles confirm that the as-prepared hierarchically porous composites own excellent recyclable properties and the removal efficiency for CR and MO are 80.2% and 73.7% even after five cycles, respectively.
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Nano Energy
·
2012
·
IF 0
Junfeng Xie,Xu Sun,Ning Zhang,Kun Xu,Min Zhou,Yi Xie
With the dramatic development of portable electronics, power sources with ultrathin geometries and ultraflexibility have become an important prerequisite. In this rising field, all-solid-state thin-film supercapacitors (ASSTFSs) have received tremendous attentions due to their ultraflexibility and high safety, which are considered as competitive candidates for energy supplies in flexible electronics. However, state of the art for ASSTFSs based on carbonaceous materials and conducting polymers exhibits relatively low capacitance, which restricts their practical applications. In this study, we demonstrate the first successful application of pseudocapacitive transition metal hydroxides in all-solid-state thin-film supercapacitor (ASSTFS), exhibiting high capacitance, remarkable high-rate capability and long-term cycling stability. The free-standing thin-film electrode was fabricated by β-Ni(OH) 2 /graphene nanohybrids with unique layer-by-layer characteristics. The nanohybrids can be easily exfoliated into ultrathin hybrid nanoflakes with thickness of ∼10 nm and reassembled into free-standing thin-film electrode with ultraflexibility. The novel layer-by-layer structure could efficiently integrate both merits of pseudocapacitive β-Ni(OH) 2 and conducting graphene, resulting in extraordinary electrochemical performance in ASSTFSs. The highest specific capacitance of 660.8 F cm −3 for ASSTFSs was achieved with negligible degradation even after 2000 charge–discharge cycles, demonstrating the high-performance electrochemical property and superior cycling stability. And the all-solid-state nature combined with superior electrochemical performance and ultraflexibility makes our device an outstanding candidate for power sources in portable electronics.
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DALTON TRANSACTIONS
·
2026
·
IF 3.3
Yang Pan,Cong-Min Fan,Tiancheng Feng,Haoyang Peng,Xiaolian Xu,guiqi gao
The slow kinetics of the oxygen evolution reaction hinders the efficiency of water decomposition, so it is crucial to develop noble metal-free electrocatalysts for the efficient decomposition of water via oxygen evolution reaction (OER) in alkaline electrolytes. In this study, flower-like structured hydroxides grown in situ consisting of ultrathin nanosheets stacked on Fe Foam (FF) were prepared by a one-step hydrothermal method for efficient electrocatalytic oxygen evolution reaction. M(OH)(OCH 3 ) (M=Co, Cu) requires only a low overpotential of 270 mV and 379 mV of the OER, to provide 20 mA⋅cm -2 and 100 mA⋅cm -2 current densities respectively. With the synergistic effect of Co 2+ and Cu 2+ , the adsorption capacity of the intermediate OH* and the conductivity are improved, and the structural surface reconstruction are promoted by methoxide. In this work, the structure of FF-based electrocatalysts was modulated by Co 2+ and Cu 2+ introducing and synthesizing methoxy anions, which improved the catalytic activity of the catalysts.
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PubMed
高影响因子
RENEWABLE ENERGY
·
2026
·
IF 9.1
Huage Lin,Weiyan Su,Yihan Tang,Jiaxiang Zong,Guangyu Wu,Weinan Xing
The scalable synthesis of green chemical fuels via artificial photosynthesis represents a cornerstone strategy for buffering intermittent renewable energy and advancing global carbon neutrality. However, the practical engineering deployment of this technology is severely constrained by suboptimal solar-to-fuel conversion efficiencies at the catalytic interface. Herein, a tubular S-scheme Co 2 (OH)PO 4 @CN (CoHP@CN) heterojunction was fabricated via a pre-coordination-mediated in-situ growth strategy to facilitate solar energy harvesting. Characterizations reveal that a directional internal electric field (IEF) drives an S-scheme charge pathway, significantly reducing transfer resistance while preserving strong redox capabilities. Benefiting from these kinetic features, the heterojunction delivers exceptional solar fuel production performance, achieving a CO yield of 383.40 μmol g −1 (over 4 h) and H 2 evolution of 4657.40 μmol g −1 (within 2 h). This study underscores the power of precise interface engineering in modulating charge dynamics, offering practical insights for scalable solar-to-chemical energy storage and renewable energy deployment.
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ACS Catalysis
·
2026
·
IF 13.6
Chenkun Zheng,Jianan Li,Dong Zhang,Yi Liu,Yin Wang,Xiaodi Wang,Yun-Xiang Pan,Chong Peng
Coupling the hydrogen evolution reaction (HER) with PET-derived ethylene glycol oxidation reaction (EGOR) offers an energy-saving route for hydrogen production and plastic upcycling. However, Pt-based bifunctional catalysts are limited by inefficient Pt utilization, nonideal H* adsorption, and anodic oxidation-induced deactivation. Here, we report an oxygen-deficient D-Pt-Ni(OH)2/NF catalyst prepared by dielectric barrier discharge plasma treatment and integrated with an alternating-pulse electrolysis strategy. Plasma treatment introduces abundant oxygen vacancies and promotes electron transfer from Ni to Pt, downshifting the Pt d-band center and optimizing H* adsorption. The optimized catalyst requires only 12 mV to reach 10 mA cm–2 for HER and delivers a Pt mass activity of 3.23 A mg–1Pt at –0.1 V vs RHE, which is 64.6 and 1.68 times higher than those of Pt/C and untreated Pt-Ni(OH)2/NF, respectively. In an HER||EGOR electrolyzer, D-Pt-Ni(OH)2/NF achieves 100 mA cm–2 at 0.96 V using PET hydrolysate. Alternating-pulse electrolysis suppresses Pt oxidation and enables stable 100 h operation in a membrane-free flow electrolyzer, with >90% Faradaic efficiency for glycolic acid and nearly 100% Faradaic efficiency for H2. Techno-economic analysis indicates a net profit of $1080.1 per ton of PET processed. This work demonstrates a catalyst–electrolysis co-engineering strategy that links plasma-induced electronic modulation with durable plastic valorization-assisted hydrogen production.
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ACS Applied Materials & Interfaces
·
2026
·Vol. 18
·期 32
·43974-43984
·
IF 7.8
Zhang Chuyi,Sun Zhi,Kong Weiqian,Wu Wenzhuo,Zheng Xiaoli,Xu Qun
The enhancement of photocatalytic efficiency is limited by exciton dynamics, where photogenerated electrons and holes rapidly recombine due to strong Coulomb attraction. The manipulation of electron spin, involving the control of electron spin and spin states, has emerged as a promising strategy to improve photocatalytic performance via spin-polarization-facilitated charge separation. In this work, we demonstrate a spin-polarization effect achieved by treating ZnSn(OH) 6 (ZHS) with supercritical CO 2 (SC CO 2 ), which accelerates exciton dissociation and spin-dependent electron migration, thereby enhancing the efficiency of photocatalytic CO 2 reduction to CO. Mechanistic investigations reveal that SC CO 2 treatment induces oxygen vacancies in ZHS, generates spin-polarized electrons, and selectively exposes highly active {111} crystal facets. Experimentally, it reveals that the oxygen vacancies, together with adjacent hydroxyl groups, construct frustrated Lewis pairs (FLPs). Through enhanced quantum spin exchange interactions (QSEIs), the recombination of photogenerated charge carriers is significantly suppressed, and then their lifetime is prolonged, and CO 2 adsorption and activation are simultaneously enhanced. It was found that, under treatment at 16 MPa of SC CO 2 , the CO production rate of ZHS reaches 144.82 μmol·g –1 ·h –1 , which is 29.37 times that of the untreated sample. Therefore, this study demonstrates that manipulating spin-polarized electrons in photocatalytic semiconductors is an effective strategy to boost CO 2 RR efficiency, offering new insights for the design of efficient spin-dependent photocatalysts toward solar energy conversion.
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CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Shinjae Lee,Hayoung Jeong,Hyungjin Choi,Chaewon Lee,Donghyeon Kim,Eonu Nam,Na Hye Kim,Hyeongeon Lee,Jeong Woo Han,Kwangjin An
Ru 1 /Mg(OH) 2 enables hydrogen-free catalytic fractionation of lignocellulose in water. • Single-atom Ru anchored on defect-rich Mg(OH) 2 forms active Ru–O–Mg sites. • C α –OH of β–O–4 linkages acts as an intrinsic hydrogen source for cleavage. • DFT reveals a low-barrier dehydrogenation-assisted β–O–4 scission pathway. • Up to 50.7 wt% aromatic monomers are produced without external hydrogen. Lignin-first biorefining offers a promising route for producing renewable aromatic chemicals; however, most reductive catalytic fractionation (RCF) strategies rely on external hydrogen, limiting their scalability and safety. Here, we report a Ru 1 /Mg(OH) 2 catalyst that enables self‑hydrogen supplied catalytic fractionation (SCF) of lignocellulose in water without external H 2 . The catalyst delivers a remarkably high lignin monomer yield of 50.7 wt% from birch sawdust, approaching the theoretical maximum. Comprehensive characterization (XRD, TEM, XAFS, XPS, Raman, and ESR) reveals that Ru is predominantly atomically dispersed on Mg(OH) 2 and interacts strongly with proton-missing oxygen defects to form unique Ru–O–Mg interfacial sites. These sites generate highly basic oxygen species that promote C α –OH dehydrogenation and subsequently facilitate β–O–4 bond cleavage. Model compound studies confirm that the C α –OH group serves as the intrinsic hydrogen donor, while isotope-labeling experiments and kinetic analysis identify C α –H activation as the rate-determining step. Density functional theory calculations further establish that the dehydrogenation-assisted β–O–4 cleavage pathway has the lowest activation barrier (0.31 eV), validating the endogenous hydrogen mechanism. Collectively, this study provides fundamental insights into hydrogen-free lignin depolymerization and establishes Ru 1 /Mg(OH) 2 as a highly efficient platform for green and scalable lignocellulose valorization. Lignin-first biorefining offers a promising route for producing renewable aromatic chemicals; however, most reductive catalytic fractionation (RCF) strategies rely on external hydrogen, limiting their scalability and safety. Here, we report a Ru 1 /Mg(OH) 2 catalyst that enables self-hydrogen supplied catalytic fractionation (SCF) of lignocellulose in water without external H 2 . The catalyst delivers a remarkably high lignin monomer yield of 50.7 wt% from birch sawdust, approaching the theoretical maximum. Comprehensive characterization (XRD, TEM, XAFS, XPS, Raman, and ESR) reveals that Ru is predominantly atomically dispersed on Mg(OH) 2 and interacts strongly with proton-missing oxygen defects to form unique Ru–O–Mg interfacial sites. These sites generate highly basic oxygen species that promote C α –OH dehydrogenation and subsequently facilitate β–O–4 bond cleavage. Model compound studies confirm that the C α –OH group serves as the intrinsic hydrogen donor, while isotope-labeling experiments and kinetic analysis identify C α –H activation as the rate-determining step. Density functional theory calculations further establish that the dehydrogenation-assisted β–O–4 cleavage pathway has the lowest activation barrier (0.31 eV), validating the endogenous hydrogen mechanism. Collectively, this study provides fundamental insights into hydrogen-free lignin depolymerization and establishes Ru 1 /Mg(OH) 2 as a highly efficient platform for green and scalable lignocellulose valorization. Download: Download high-res image (237KB) Download: Download full-size image
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