MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
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2025
·
IF 4.6
Pengfei Tian,Yunan Shen,Yuzhe Hua,Zilong Chen,Zhifan Chen,Qingjie Guo,Hongjing Tian
Calcium lignosulfonate, an important natural anionic surfactant widely used in chemical, agricultural and construction applications, was employed to enhance the desulfurization performance of Ca(OH) 2 by adjusting its crystal growth at the atomic level. In the digestion of CaO, calcium lignosulfonate was selectively adsorbed onto the 101 surface of Ca(OH) 2 crystal by the interaction between the sulfonic acid group of calcium lignosulfonate and Ca(OH) 2 surface. The specific adsorption was proved to inhibit the growth of the 101 crystal surface owing to the steric hindrance and electronic interactions. DFT calculations show that the adsorption energy is −1.70 eV, and the change in free energy is negative, indicating spontaneous adsorption. By XRD and SEM characterization results and DFT simulation results, while boost the Ostwald ripening of the 001 surface to form the ultrathin nanosheets with a thickness of 16–21 nm. PDOS simulation results testified that the transferring of lone pair electrons from 2p orbital to the empty 3d-orbitals of calcium and the formation of Ca-O bond because of 0.08 Ha blue shift and broadening of the 2p-orbitals of oxygen. Additionally, the calcium lignosulfonate (CLS) modified Ca(OH) 2 exhibited the increase of BET surface area by 62 % from 30.09 m 2 /g to 48.76 m 2 /g and developed a mesoporous structure with the pore volume of 0.248 cm 3 /g. Consequently, the sulfur capacity of Ca(OH) 2 –15.62 mg/g in comparison to pristine Ca(OH) 2 without CLS, while the penetration times for desulfurization experiments increased from 3300 s to 7600 s.
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SEPARATION AND PURIFICATION TECHNOLOGY
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2025
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IF 9
Qiang Bi,Cai Zhang,Yumiao Zhang,Kechun Wang,Shiping Zhao,Haodi Song,Juanqin Xue
Dual-atom catalysts (DACs) possess outstanding catalytic properties arising from unique intermetallic synergistic effects and electronic coupling, yet the precise construction of cooperative reaction centers remains a critical challenge. In this study, a synergistic electrostatic modulation strategy is employed to anchor Zn Co dual-atomic sites onto an S/N co-doped carbon substrate (Zn,Co-DAC/SNC), in which Zn and Co are cooperatively distributed at an interatomic distance of 2.59 Å within an N3 Zn Co N/C/S coordination environment, forming stable reactive centers. Sulfur doping induces Zn-p/Co-d orbital coupling, which strengthens electronic synergy and promotes efficient ·OH generation, endowing the catalyst with excellent ibuprofen (IBP) degradation activity (>98 %). In this system, Co serves as the primary active center responsible for O O bond cleavage, Zn modulates the electronic structure to enhance ·OH yield, and sulfur atoms stabilize metal coordination while regulating interfacial charge. Under sulfur regulation, the Zn Co bimetallic centers induce electron redistribution and an upshift of the d-band center, thereby lowering the O O bond cleavage barrier (−3.79 eV) and preferentially driving one-step bond scission to yield dual ·OH. This work elucidates the Zn/Co/S ternary synergy in H 2 O 2 activation and provides theoretical guidance for the structure-activity design of multimetal-heteroatom catalysts.
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ACS Sustainable Chemistry & Engineering
·
2025
·
IF 7.3
Zhen Li,Jingyi Wu,Weixuan Li,Shiyao Sun,Qianlong Wang,Jialin Zhao,Yijia Lei,Na Li,Jiayao Yang,Yuchao Wang,Zhe Wang
Anion exchange membranes (AEMs), as the core component of anion exchange membranes fuel cells (AEMFCs), exhibit high OH– conductivity and dimensional stability, which are critical for continuous and stable power generation. In this paper, the synthesis of 6,6′-dimethoxy-3,3,3′,3′-tetramethyl-1,1′-spirobiindane (SBI) was introduced, and it was synthesized to prepare a series of fluorinated poly(aryl piperidinium) microporous AEMs (QFPTP-SBI-m). The thermodynamic incompatibility in the polymer drives the formation of the microphase separation structure. The hydrophobic regions can restrict the swelling of the membrane, and the hydrophilic regions serve as ion transport channels. Additionally, the introduction of SBI monomers increases the free volume between the chains and reduces the transport resistance. The synergistic effect of microphase separation and free volume is utilized to regulate the properties of the AEMs. QFPTP-SBI-20% exhibited high OH– conductivity (197.53 mS cm–1), and the peak power density (PPD) reached 1.08 W cm–2 at a current density of 2.5 A cm–2. The WU of 41.36% and SR of 15.99% at 80 °C ensure good dimensional stability. Furthermore, the OH– conductivity was reduced by 8.71% after 1700 h (3 M NaOH). The prepared QFPTP-SBI-20% area exceeded 140 cm2, indicating its significant potential for large-scale applications.
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JOURNAL OF ALLOYS AND COMPOUNDS
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2025
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IF 6.3
Wenzhuo Li,Yuanyuan Chen,Yufeng Wang,Mengyi Wang,Lei Cheng,Lixian Sun,Puxuan Yan
Compared with micro-nano powder, the integral catalyst shows the advantage of easy recovery in practical applications. Aerogel exhibit a lightweight and porous skeletal structure, making it one of the excellent carrier options in integral catalyst. Here, the novel aerogel composite is prepared by sol-gel and freeze-drying, in which including chitosan, cellulose, carbon nanofiber and micron composite catalyst. Then, nano Co 2 B is in-situ loaded onto the surface of micron flower shaped Co(OH) 2 , forming the catalyst. The results show the hydrogen generation rate of Co 2 B@Co(OH) 2 is 8117.7 mL min −1 g −1 , higher than most of the published literatures, which is attributed to crystal and amorphous interface, nano structure and mass transfer pathway. Meanwhile, the hydrogen generation rate of the aerogel composite is 6022.8 mL min −1 g −1 , showing high exposure rate of active sites (74.2 %) and low mass loss rate (7.3 %), due to the chemical cross-linking between chitosan and glutaraldehyde, and porous and fibrous network skeleton formed between different components. The natural polymer-based aerogel exhibits the combined advantages of being biodegradable, recyclable, and serving as self-assembled micro-nano powder catalysts.
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TALANTA
·
2025
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IF 6.1
Shihong Xin,Zhiyue Wang,Shudan Wu,Xueqing Yong,Jun Yan,Yunlin Chen
Optical sensor research has drawn great attention for significant market potential and a wide range of applications. Ammonia (NH 3 ) is a gas widely used in industry, but it is also a significant safety hazard for its toxicity, corrosiveness and explosiveness. However, it is challenging to create reliable NH 3 optical sensors with high sensitivity, excellent selectivity and fast response simultaneously. In this work, heterostructure membrane Fabry ‐ P e ´ rot (F–P) cavities constructed by LiCl@MIL-53-(OH) 2 (LiCl was anchored in MIL-53-(OH) 2 ) and TiO 2 (LiCl@MIL-53-(OH) 2 /TiO 2 ) were fabricated for NH 3 detection. Compared to the MIL-53-(OH) 2 /TiO 2 heterostructure membrane F–P cavity, the LiCl@MIL-53-(OH) 2 /TiO 2 heterostructure membrane F–P cavity exhibited superior sensing performance toward NH 3 . Experimental results indicated that the LiCl@MIL-53-(OH) 2 -2.0/TiO 2 heterostructure membrane F–P cavity exhibited excellent selectivity and sensitivity (3.075 nm/ppm), and the lower detection limit achieved to 98 ppb. The results were attributed to the multiple actions of hydrogen bonding of NH 3 with Cl − and NH 3 coordination to Li + . Additionally, the sensor showed fast optical response time 500 ms, outstanding repeatability and stability. The sensitivity of LiCl@MIL-53-(OH) 2 -2.0/TiO 2 heterostructure membrane F–P cavity toward NH 3 at 2.5 ppm and 25 ppm is outstanding, showing the F–P cavity offers a promising solution for real-time NH 3 monitoring. Therefore, LiCl was introduced into MIL-53-(OH) 2 /TiO 2 F–P cavity NH 3 sensor, which provides a new idea for future optical gas sensors with high performance for gas sensing.
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PubMed
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INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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2024
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IF 8.1
Kelin Li,She Chen,Mengbo Li,Linlin Liu,Yunjie Li,Feng Wang
Ammonia is a promising carrier for energy storage due to its high hydrogen content, low storage and transportation costs, and zero carbon emissions. Plasma catalysis shows excellent potential for sustainable ammonia synthesis; however, searching for suitable catalysts is ongoing. La(OH) 3 was studied due to its rich basic sites and oxygen vacancies, which are beneficial for plasma-catalyzed ammonia synthesis. The optimal reaction conditions were investigated, and a maximum ammonia synthesis rate of 37.13 μmol/(min•g -cat ) was achieved. H 2 plasma treatment enhanced the catalytic activity of La(OH) 3 , and ammonia synthesis rate of 40.00 μmol/(min•g -cat ) were achieved. This study contributes to the development of efficient catalysts for plasma-catalyzed ammonia synthesis and highlights the potential of La(OH) 3 as a promising catalyst.
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INORGANIC CHEMISTRY
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2019
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IF 4.85
Ya-Ping Gong,Yun-Xiang Ma,Shao-Ming Ying,Jiang-Gao Mao,Fang Kong
Two new indium sulfate tellurites, namely, In2(SO4)(TeO3)(OH)2(H2O) and In3(SO4)(TeO3)2F3(H2O), were synthesized by hydrothermal method in a one-pot reaction. Their pure phase yields have been successfully optimized to 76% and 21%, respectively. In2(SO4)(TeO3)(OH)2(H2O) crystallized in centrosymmetric (CS) space group P21/n, while In3(SO4)(TeO3)2F3(H2O) formed a non-centrosymmetric (NCS) and chiral space group P212121. The CS compound features a 2D layered structure composed of 2D indium oxide layers decorated by sulfate tetrahedra and tellurite groups. The NCS compound displays a 3D network consisting of indium tellurite layers bridged by sulfate tetrahedra. Powder second harmonic generation measurements disclosed that In3(SO4)(TeO3)2F3(H2O) exhibits a weak frequency-doubling efficiency about 11% of the commercial KDP. Its powder laser damage threshold quantity was estimated to be 79.6 MW/cm2, which is about 36 times that of AGS. The two samples present wide optical band gaps of 4.86 and 4.10 eV, respectively, which were determined by Te, In, and O atoms based on density functional theory calculations.
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Nanomaterials
·
2021
·Vol. 11
·期 11
·3122
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IF 5.076
Rao Fu,Yinyan Gong,Can Li,Lengyuan Niu,Xinjuan Liu
The development of highly active and stable photocatalysts, an effective way to remediate environment pollution and alleviate energy shortages, remains a challenging issue. In this work, a CdIn2S4/In(OH)3nanocomposite was deposited in-situ on NiCr-LDH nanosheets by a simple hydrothermal method, and the obtained CdIn2S4/In(OH)3/NiCr-LDH heterostructure photocatalysts with multiple intimate-contact interfaces exhibited better photocatalytic activity. The photocatalytic H2evolution rate of CdIn2S4/In(OH)3/NiCr-LDH increased to 10.9 and 58.7 times that of the counterparts CdIn2S4and NiCr-LDH, respectively. Moreover, the photocatalytic removal efficiency of Cr(VI) increased from 6% for NiCr-LDH and 75% for CdIn2S4to 97% for CdIn2S4/In(OH)3/NiCr-LDH. The enhanced photocatalytic performance was attributed to the formation of multi-interfaces with strong interfacial interactions and staggered band alignments, which offered multiple pathways for carrier migration, thus promoting the separation efficiency of photo-excited electrons and holes. This study demonstrates a facile method to fabricate inexpensive and efficient heterostructure photocatalysts for solving environmental problems.
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ACS Sustainable Chemistry & Engineering
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2025
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IF 7.3
Shuanglong Xiao,Fan Zhang,Jilin Wang,Lulu Wang,Jia Ju,Yang Zhang
Although the anion exchange membranes (AEMs) prepared through superacid-catalyzed polymerization exhibit high alkaline stability, the hydrophobic microdomains in the AEMs impede OH– conduction. To fabricate AEMs with both high conductivity and alkaline stability, ether-free poly(aryl piperidine) is synthesized herein via superacid-catalyzed polymerization, which is then modified by the uneven side-chain cations simultaneously. The uneven side-chain cations possessing different lengths are advantageous for the dispersion of the cations, which can broaden OH– conducting channels. PAP-TP-Pip-50% membrane with the most uniform dispersion of cations possesses the highest water uptake (151.1%) and OH– conductivity (220.8 mS cm–1) at 80 °C among the prepared AEMs. The ether-free backbones and alkyl spacers, along with high water absorption caused by the broadened OH– conducting channels, endow PAP-TP-Pip-50% with excellent stability. After immersion in a 1 M NaOH solution (80 °C, 3000 h), the conductivity of PAP-TP-Pip-50% remains at 94.56% and PAP-TP-Pip-50% still possesses excellent mechanical properties. The single cell with PAP-TP-Pip-50% exhibits a peak power density of 1.77 W cm–2 (80 °C). After a 150 h endurance test, the voltage loss is just 94 mV. All these demonstrate that broadened OH– conducting channels through grafting uneven side-chain cations are an effective strategy for designing AEMs.
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Journal of Materials Chemistry C
·
2022
·Vol. 10
·期 16
·6263-6270
·
IF 8.067
Yunpeng Xu,Yue Liu,Jianyong Ye,Lizhong Wang,Sheng Zhuo,Weifan Chen
Low-cost and highly electroactive nickel-based materials are important electrodes for the development of supercapacitors. The precise modulation of the morphology and microstructure has been a crucial measure to further enhance the electrochemical performance. Herein, a three-dimensional porous nanocage NixS6/Ni(OH)2 hybrid formed by NixS6 nanoparticles anchored on Ni(OH)2 nanoflakes was creatively synthesized via a simple and scalable approach, which was based on two-time ion exchange reactions of the Mg(OH)2 precursor. Significantly, in asymmetric supercapacitors, the NixS6/Ni(OH)2 hybrid exhibits a high specific capacitance of 2726 F g−1 at a current density of 1 A g−1 and an excellent energy density of 31.31 Wh kg−1 at a power density of 62.56 W kg−1, which are superior to those of the currently reported nickel sulfide electrode materials. Compared with the nanoflower-like Mg(OH)2 and Ni(OH)2 precursors, the NixS6/Ni(OH)2 hybrid possesses hollow, abundant porous morphology and better electrical conductivity, which could provide a large contact surface area, shorter ion diffusion path and excellent charge transport, resulting in a dramatic improvement in electrochemical performance, making the NixS6/Ni(OH)2 hybrid a superb cathode material for supercapacitors.
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FUEL
·
2024
·
IF 6.7
Jinhui Song,Tianfu Zhang,Mengjiao Xing,Junfeng Zhou,Lu Tang,Jiaxin Xie,Zimin Peng,Wenyao Gu,Jianyu Tang,Suyao Liu,Tong Chang,Yi Liu,Yiwen Fang
With the potential application of biomass-derived feedstock upgradation to sustainable aviation fuels, it is essential to enhance the hydroisomerization performance of ZSM-22 zeolite while improving its resistance to residual oxygen-containing compounds. As the defect sites in the ZSM-22 zeolite, the abundant Si-OH groups are closely related to the catalytic performance and stability, serving as the main attack sites for the generated water. In this work, liquid-mediated defect-healing treatment is performed to heal Si-OH to Si-O-Si, leading to the enhancement of the crystallinity and pore connectivity without affecting the Si/Al, micropore volume, and morphology and preventing the micropores blockage and dealumination caused by conventional silylation and silication procedures. The outcome of the declined Si-OH groups is the reduction of the Lewis acid site without altering the Brønsted acidity. In the n-dodecane hydroisomerization, the catalyst obtained by the liquid-mediated defect-healing treatment route shows an increased conversion and isomer yield compared to the parent and healed catalysts prepared by other healing methods. This is mainly due to enhanced confinement of the micropore void, resulting in decreased apparent activation energy and reduced yield to multi-branched isomers prone to cracking. Furthermore, the healed catalyst exhibits improved resistance and structure stability in the hydroisomerization of feedstocks containing butanol. The work provides a prospective application of ZSM-22 zeolite in the hydroisomerization for complex and severe reactants through the essential Si-OH healing method.
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CHINESE JOURNAL OF CATALYSIS
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2024
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IF 15.7
Wancheng Zhao,Jiapeng Ma,Dong Tian,Baotao Kang,Fangquan Xia,Jing Cheng,Yajun Wu,Mengyao Wang,Gang Wu
ABSTRACT In order to reduce energy consumption in water electrolysis, it is of great importance to design active and stable electrocatalysts for hydrogen evolution reaction (HER) in alkaline solution, especially based on earth-abundant metal. Here we integrate carbon nanotubes (CNTs) and Ni-Ni(OH) 2 heterostructure multifunctional components to design a self-supported 3D CNTs-Ni-Ni(OH) 2 catalyst for HER by composite deposition and subsequent in-situ oxidation . In alkaline solution, this designed CNTs-Ni-Ni(OH) 2 catalyst exhibits 0 mV onset overpotential, and overpotentials of 65 mV and 109 mV at 10 and 50 mA/cm 2 respectively. Electrochemical measurements, characterizations, and simulation results attribute the outstanding performance to the incorporation of CNTs and heterostructure . CNTs induce the formation 3D catalytic surface, enhance electrochemical active surface area , and more importantly weaken the adsorption of H. Moreover, the formation of heterostructure, especially reversible Ni(OH) 2 , supplies active sites and adjusts the adsorption strength of H atom to an optimal value. CNTs and heterostructure synergistically facilitate water adsorption, promote water dissociation, and accelerate H 2 desorption. Significantly, integration of multifunctional components supplies a distinct strategy for development of cost-effective electrocatalyst with outstanding performance.
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