PHYSICA B-CONDENSED MATTER
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2026
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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
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APPLIED SURFACE SCIENCE
·
2025
·
IF 6.9
Hezheng Sun,Yi Zhao,Changhui Xin,Hao Yang,Xin Yu,Yajie Tian
As a well-known endocrine disruptor, bisphenol A can be detected in natural waters, and the exploration of high-performance photocatalytic systems for bisphenol A removal is of significance for the sustainable development. In this work, self-doped Nb 3 O 7 (OH) architecture with abundant oxygen vacancies were synthesized using a controllable solvothermal method, while the Nb 3 O 7 (OH)-supported AgIO 3 /AgCl heterojunctions were fabricated by leveraging the residual Cl − ions over the surface Nb 3 O 7 (OH) architecture for the degradation of organic pollutants. Additionally, the proportion of AgIO 3 to AgCl over the Nb 3 O 7 (OH) architecture was adjusted by controlling the dosage of NaIO 3 , leading to the successful fabrication of the AgIO 3 /AgCl/Nb 3 O 7 (OH) composites. The AgIO 3 /AgCl/Nb 3 O 7 (OH)-25 % composite demonstrated the highest photocatalytic performance for bisphenol A degradation, achieving a rate constant of 0.02445 min −1 , which was 5.57 times that that of AgCl, 5.61 times that of Nb 3 O 7 (OH) and 163 times that of AgIO 3 , respectively. The AgIO 3 /AgCl/Nb 3 O 7 (OH)-25 % composite achieved a total organic carbon removal efficiency of 68.16 % for bisphenol A mineralization within 100 min under visible-light irradiation, which underscored the potential of AgIO 3 /AgCl/Nb 3 O 7 (OH) composites as effective photocatalysts for the efficient mineralization of organic pollutants. Finally, a reasonable charge transfer mechanism of the AgIO 3 /AgCl/Nb 3 O 7 (OH) composites for bisphenol A degradation were proposed.
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JOURNAL OF ALLOYS AND COMPOUNDS
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2025
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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.
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Journal of Physical Chemistry C
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2010
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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
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光催化
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环境化学
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半导体催化
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高影响因子
JOURNAL OF HYDROLOGY
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2026
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IF 6.3
Bowen Li,Tingting Yang,Shibin Liu,Meng Yao,Jun Dong
The uneven distribution of colloidal Mg(OH) 2 in heterogeneous porous media poses a significant challenge for its effective application in groundwater remediation. To address this issue, this study introduces a novel approach using xanthan gum (XG) as a viscosity modifier to enhance the migration of colloidal Mg(OH) 2 into low permeability zone. Results indicate that XG is highly compatible with colloidal Mg(OH) 2 , viscosity modified colloidal Mg(OH) 2 (VMC-Mg(OH) 2 ) exhibits significant shear thinning properties. The increased viscosity effectively reduces the deposition of colloidal Mg(OH) 2 and facilitates its return to groundwater. With the addition of XG to the system, the collision efficiency ( η ) between colloidal Mg(OH) 2 and porous media decreased from 0.00865 to 0.00142, while the attachment efficiency ( α ) was reduced from 0.4858 to 0.1038. These variations notably enhance the migration performance of colloidal Mg(OH) 2 , with C/C 0 increasing from 0.12 to 0.94. The incorporation of XG also leads to a substantial increase in colloidal Mg(OH) 2 sweep efficiency in low permeability zone, rising from 53.6 % to 92.5 % as the XG concentration increased from 0 mg/L to 200 mg/L. Moreover, the simulation of collision efficiency ( η ) and attachment efficiency ( α ) accurately predicts the migration of VMC-Mg(OH) 2 in heterogeneous porous media, with a maximum error of 5.39 %. These findings highlight the significant potential of VMC-Mg(OH) 2 as a reactive reagent for remediating contamination in low permeability zone
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AICHE JOURNAL
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2026
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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.
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Inorganics
·
2023
·Vol. 11
·期 6
·236
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IF 2.9
Jia-Lin Cui,Zhong-Liang Liu,Hui-Hui Li,Chun-Zhong Li
The synthesis of highly efficient heterogeneous catalysts with uniformly dispersed noble metal particles and a suitable size is crucial for various industrial applications. However, the high cost and rarity of noble metals limit their economic efficiency, making it essential to improve the catalytic performance with lower noble metal loading. Herein, a two-step method was developed for the synthesis of uniformly dispersed ~3 nm Pt nanoparticles (NPs), strongly anchored on Ni(OH)2nanosheets (NSs), which was proven by adequate structural characterizations. XPS analysis demonstrated that Ni(OH)2NSs with abundant oxygen vacancies provided sufficient anchor sites for Pt NPs and prevented their agglomeration. The catalytic performance of Ptn/Ni(OH)2(n (represents the addition amount of Pt precursors during the synthesis, μmol) = 5, 10, 15, and 20) NSs with controllable Pt loading were evaluated via the reduction of 4-nitrophenol to 4-aminophenol as a model reaction. The Pt10/Ni(OH)2NSs exhibited the best activity and stability, with a reaction rate constant of 0.02358 s−1and negligible deterioration in ten reaction cycles. This novel synthetic method shows potentials for the synthesis of highly efficient noble-metal-supported catalysts for heterogeneous catalysis.Keywords:Pt/Ni(OH)2nanosheets;oxygen vacancy;heterogeneous catalysis;reduction of 4-nitrophenol
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Journal of Materials Chemistry C
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2023
·Vol. 11
·期 23
·7654-7661
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IF 6.4
Jinchan He,Xiao Zhang,Cong Xie,Hsueh Shih Chen,Ping Yang
Because of their inherent ionic properties, inorganic cesium halide lead perovskite nanocrystals (NCs) are normally unstable in light and heat environments as well as polar solvents, which seriously limit their practical application. In this paper, AlO(OH) nanosheets were assembled into hollow mesoporous spheres to encapsulate CsPbX3 NCs for increasing stability according to the powerful adsorption of AlO(OH) on Pb ions. The hollow AlO(OH) assemblies were created via hydrothermal synthesis. The in situ growth of CsPbX3 NCs in AlO(OH) assemblies was then finished in dimethylformamide solutions. After encapsulation, the stability of the NCs was greatly improved and the exchange reaction of halogen ions was effectively prevented. The NCs in the assemblies exhibited high PL quantum yields (PLQYs). Namely, blue-, green-, and red-emitting CsPbX3 (X = Cl, Br, and I)@AlO(OH) composites were fabricated. The composites were further mixed with polystyrene (PS) to prepare a flexible photoluminescent (PL) film with excellent bendable and foldable properties. The initial PLQYs of blue-, green-, and red-emitting CsPbX3@AlO(OH) composites were found to be 48.2, 96.4, and 43.7%, respectively. The films revealed high stability against water because of the excellent hydrophobic properties of PS. These emitting films were made into bands of various shapes, in which their well-flexible nature endowed the films with important applications.
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ChemistrySelect
·
2023
·Vol. 8
·期 23
·e202203483
·
IF 2.1
Wenyao Peng,Shanshan Wang,Junjian An,Chenyang Hu,Jian Zhang,Peng Wang
Graphical GO-Cu 2 (OH) 3 NO 3 composite is prepared by using thermal calcination method. The composite exhibits larger specific surface area and stronger heterogeneous catalysis activity than those of Cu 2 (OH) 3 NO 3 . Under optimal conditions, ferulic acid could be degraded efficiently by heterogeneous process catalyzed by the composite. The environmental-friendly composite exhibits stable chemical properties, which could be reused and recycled successfully. Graphene oxide (GO)-Cu 2 (OH) 3 NO 3 composite was prepared by a thermal calcination process and evaluated as an effective heterogeneous catalytic material. The composite displayed prominent activated performance to persulfate, which was influenced by preparation condition and the reaction parameters in catalytic system. Under optimal reactive conditions, the GO-Cu 2 (OH) 3 NO 3 composite yielded rapid degradation of ferulic acid, which the corresponding apparent rate constant was 1.12×10 −1 min −1 . Catalytic mechanism analysis showed that the main oxygen species were ⋅SO 4 − and ⋅OH. Among them, ⋅OH made the main contribution in the catalytic system. The analysis of degradation intermediates of ferulic acid showed that the compound could be mineralized to small molecules. The remarkable enhanced heterogeneous catalytic performance of GO-Cu 2 (OH) 3 NO 3 was due to a larger specific surface area, high adsorption capacity and a high mass transfer efficiency of oxidizing radicals in the reactive system.
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International Journal of Electrochemical Science
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2023
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IF 1.5
Li Zheng,Chao-Rui Zhang,Dan Zhao,Xuan Wanga,Ting-Ting Du
A β-Ni(OH) 2 flakes modified carbon paste electrode [Ni(OH) 2 /CPE] has fabricated for hydrazine sensing. The β-Ni(OH) 2 flakes derived from nickel hexacyanoferrate (NiHCF) through a facile in situ electrochemical method and characterized by Fourier transform infrared spectrometry, X-ray diffraction, and scanning electron microscopy. Meanwhile, the electrochemical performances of the modified electrode studied by electrochemical impedance spectroscopy, chronocoulometry, cyclic voltammetry, and linear sweep voltammetry. Owing to the large active surface area and enhanced electron transfer efficiency of β-Ni(OH) 2 flakes, the Ni(OH) 2 /CPE showed enhanced catalytic activity toward the oxidation of hydrazine compared with NiHCF/CPE and unmodified CPE. Under the optimized conditions, the amperometric current presented linear dependence on the concentration of hydrazine in the ranges of 0.1 ~ 600 μM with the detection limit of 0.04 μM. Furthermore, the sensor has applied for the determination of hydrazine in water samples.
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Journal of Materials Research and Technology-JMR&T
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2023
·
IF 6.4
Zhenzhen Feng,Xiaomeng She,Jian Peng,Yujie Qiang,Song Zhang
Although magnesium alloys have been effectively used in industry, they have weak corrosion resistance. Herein, robust Ni-thiolate coordination polymer Mg(OH) 2 coatings were prepared by an oxidation-hydrolysis-coordination (OHC) strategy to make AZ31 magnesium alloy highly resistant to corrosion in 3.5 wt% NaCl solution. The OHC process includes three steps: I) oxidation of AZ31 to produce AZ31@MgO; II) hydrolysis of MgO to produce Mg(OH) 2 , cation exchange between Mg(OH) 2 and Ni(II) to produce Mg–Ni LDH; III) coordination of Ni(OH) 2 from Mg–Ni LDH by the 1,4-Benzenedithiol (BDT) ligand to produce LDH-BDT coatings. Potentiodynamic polarization, EIS, and in situ SRET in 3.5 wt% NaCl solution were used to assess the hybrid coating's anti-corrosion performance. Surprisingly, LDH-BDT coating achieves excellent corrosion inhibition performance (99.9999%) with the i corr of 1.926 × 10 −10 A cm −2 , which is six orders of magnitude lower than that of AZ31 substrate, this is due to the cooperative effect, such as the physical protection provided by thick LDH-BDT coatings and the hydrophobic properties of Ni(II)-BDT coordination polymers. This study provides fresh insight into the fabrication of Mg(OH) 2 -based coatings modified with Ni-thiolate complex to significantly improve Mg alloys' resistance to corrosion.
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FUEL
·
2023
·
IF 7.4
Wenqi Zhao,Xiaowei Bai,Xiangrui Lin,Yalkunjan Tur sun,Mei Zhong,Zhenghua Dai,Jian Li
Biomass-derived furfural and its derivatives are promising feedstocks for producing valuable C 5 diols by catalytic hydrolysis. However, this process requires selective ring opening of tetrahydrofurfuryl alcohol (THFA) to 1,5-pentanediol, which is challenging. Here we report efficient route for this conversion using Ni-La(OH) 3 catalysts prepared by a green co-precipitation-hydrothermal method. We show that these catalysts can achieve up to 91.7% yield and 94.6% selectivity of 1,5-pentanediol from THFA under mild conditions. We elucidate the key role of the La(OH) 3 phase, the basic sites and the Ni n+ -O-La 3+ structure of the catalysts in promoting the selective hydrogenolysis and ring opening of THFA. We also demonstrate that the co-dehydrogenation of secondary alcohols enables lower reaction pressure and longer catalyst lifetime. Our work provides a sustainable and environmentally benign approach for producing 1,5-pentanediol from biomass-based furfural and its derivatives, which has potential applications in polymer synthesis and green chemistry.
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