JOURNAL OF ALLOYS AND COMPOUNDS
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2025
·
IF 6.3
Xia Wei,Bing Fang,Tianyao Wang,Hongbin Dai,Song Li
Understanding the metal-support interaction between Rh-B and CeO 2 is essential for enhancing the efficiency of hydrogen generation from hydrous hydrazine. In this study, a series of Rh-B/CeO 2 catalysts were synthesized via a facile wet-chemical reduction method. The Rh-B/(CeO 2 ) 0.7 catalyst exhibits a remarkable 12-fold increase in turnover frequency (TOF) compared to pristine Rh-B catalyst. The strong electronic coupling between Rh-B and CeO 2 was identified as the primary factor driving this significant performance enhancement. This interaction facilitates the formation of oxygen vacancies, promoting hydrazine adsorption and subsequent cleavage of the N-H bond in N 2 H 4 * to form N 2 H 3 *. Our findings emphasize the pivotal role of support engineering in catalyst design for optimizing catalytic performance.
研究领域:
催化化学
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材料科学
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产品关联
DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2022
·Vol. 46
·期 45
·21560-21567
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IF 3.925
Jinyang Liu,Yan Zhou,Xiuniang Tan,Shengjiang Zhang,Chunjiao Mo,Xiaobo Hong,Taolong Wu,Xuecai Tan,Yanjuan Liao,Zaiyin Huang
The establishment of heterojunctions is an effective way to improve the performance of semiconductor photocatalysts as a solution to solve environmental pollution problems; however, the decomposition efficiency of organic pollutants driven by sunlight remains a challenge. Herein, CoS2-decorated CdS hetero-junctions as highly efficient photocatalysts were rationally synthesized via a three-step process and CoS2-decorated CdS composites were characterized by X-ray diffraction, scanning electron microscopy, transmission electron microscopy, UV-Vis diffusion reflectance spectrometry, fluorescence spectroscopy analysis, X-ray photoelectron spectroscopy, electron paramagnetic resonance spectroscopy, and transient photocurrent measurement. Using organic dyes rhodamine B (Rh B) and nitenpyram (NTP) as model pollutants, the performance of the CoS2-decorated CdS composites for the degradation of model pollutants were evaluated. Among them, the material with the best performance can degrade 99.5% Rh B and 92.5% NTP within 120 min. Furthermore, the catalyst still maintained its high catalytic activity after five cycles. This work provides a new idea for developing efficient and inexpensive hetero-junctions as photo-catalysts.
研究领域:
环境科学
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材料科学
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DOI
高影响因子
ACS Omega
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2016
·
IF 0
Yanyan Liu,Shimin Wang,Congcong Xing,Hang Du,Chenxia Du,Baojun Li
A novel template-activation method was used to create nanoporous carbon materials derived from core–shells@rGO sheets. The carbon materials were prepared through an acid etching and thermal activation procedure with three-dimensional Fe3O4@C@rGO composites as precursors and Fe3O4 nanoparticles as the structural template. The activation at different temperatures could provide materials with different specific surface areas. The unique nanoporous structures with large surface areas are ideal adsorbents. The nanoporous carbon materials were used as adsorbents for the removal of rhodamine B (Rh-B). C@rGO-650 illustrated better adsorption performance than the other synthesized adsorbents. It displayed good recyclability, and its highest adsorption capacity reached up to 14.8 L·g–1. The remarkable adsorption properties make nanoporous carbon a useful candidate for wastewater treatment. This template-activation method can also broaden the potential applications of core–shells@sheet structures for the construction of nanoporous carbon, which helps to resolve the related energy and environmental issues.
研究领域:
材料科学
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环境科学
✓ 已验证
产品关联
DOI
PubMed
Materials Research Express
·
2019
·Vol. 6
·期 10
·105916
·
IF 1.449
Nuoya Wang,Xinhua Huang,Vincent Chan,Lei Zhang
Conducting polymer has emerged as an attractive class of photocatalyst for wastewater treatment under visible light and UV light irradiation. In our current work, two types of polypyrene microparticles (PPMSs) were tailored designed as a novel catalytic material for photocatalytic degradation of Rhodamine B (RhB) in aqueous solution. The degradation rate of RhB correlated with the effectiveness of respective photocatalytic processes was determined from the UV absorbance spectrum. Firstly, highly monodispersed PPMSs with an average diameter of around 1 μm were successfully synthesized from the emulsion co-polymerization of pyrene and chloromethyl methyl ether. Secondly, PPMSs remained to be chemically stable under various pH values in the solution. Moreover, the degradation rate of the types of PPMSs at different pHs values ranged from 63.2% to 98.43%. Interestingly, the degradation efficiency of PPMSs under acidic conditions (pH < 6) decreased with the increase of pH while it increased with the increase of pH under alkaline conditions (pH > 9). The degradation efficiency reached a peak under pH 7.0. Overall, PMMSs which possessed high chemical resistance against strong acid or base and high photocatalytic activities for the degradation of model organic pollutants under various pHs would provide a new alternative for wastewater treatment.
研究领域:
环境科学
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材料科学
✓ 已验证
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
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2017
·Vol. 28
·期 23
·18145-18153
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IF 2.019
Hao Meifeng,Fa Dejuan,Qian Lihong,Miao Yuqing
By one step hydrothermal reaction, the ultrafine nanoparticles of Bi 2 WO 6 /NiWO 4 were prepared with the particle size smaller than 5 nm. They dispersed very well in solution and exhibited excellent photocatalytic efficiency for the degradation of Rhodamine under visible light, UV light and natural solar light respectively. Under visible light irradiation for 30 min, the model dye Rhodamine B (Rh B) nearly completely degraded. For natural solar light irradiation, only 10 min observed the complete degradation of Rh B. This provides new nanocomposites for efficient photo-driven degradation of organic dyes under visible or natural solar light irradiation.
研究领域:
材料科学
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
MICROPOROUS AND MESOPOROUS MATERIALS
·
2022
·
IF 5.876
Xiao Miao,Guina Ren,Xiaolong Zhang,Jianhua Jiao,Changqing Zhu,Qianqian Du,Bo Ge,Cancan Liu
Solar steam generation devices assembled based on interfacial heating technology show the ability to produce clean water, while it faces challenges in the sewage environments. The superhydrophobic fabric was used to selectively adsorb surface oily pollutants based on its non-wettability. Soluble pollutants remaining in water after evaporator treatment can be further removed through photodegradation . Herein, the device composed of superhydrophobic C 3 N 4 /Bi 2 MoO 6 heterojunction , water supply layer and CuO photothermal layer was assembled to remove oily and water-soluble pollutants and produce clean water. The contact angle of water on the superhydrophobic C 3 N 4 /Bi 2 MoO 6 surface reaches 154° and shows the selective adsorption of cyclohexane . The prepared bulk catalyst C 3 N 4 /Bi 2 MoO 6 not only indicate the stability of reuse, but also maintained the degradation efficiency of 98.7% under outdoor light conditions. Through the active species capture experiments, •O 2 − was verified as the main active material in the photodegradation process. The formation of Type II heterojunctions between C 3 N 4 and Bi 2 MoO 6 facilitated the separation of e − /h + at the C 3 N 4 /Bi 2 MoO 6 interface.
研究领域:
环境科学
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材料科学
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
SOLAR ENERGY
·
2022
·
IF 7.188
Bo Ge,Mingyang Li,Heyuan Li,Yuchao Li,Guina Ren,Wei Li
Environmental governance and clean water production are the challenges that human face. In this paper, the device composed of superhydrophobic layer, hydrophilic channel and photothermal conversion layer was fabricated. The superhydrophobic layer has a contact angle of 162°, which not only ensures the floating of the device, but also has the ability to selectively absorb non-water-soluble pollutants. In addition, the surface-loaded Bi 2 MoO 6 /Bi 2 O 3 photocatalyst can also degrade the water-soluble pollutants. After 4 cycles of photodegradation, the degradation efficiency was 92.6 %, demonstrating a stable degradation stability. The optimal content of MnO 2 (60 mg) was demonstrated by steam production rate experiments. The mechanical stability of superhydrophobic fabric, chemical stability of the MnO 2 , and photothermal stability were demonstrated. The assembled multifunctional devices can be used both for environmental treatment and for clean water production.
研究领域:
环境科学
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材料科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ENVIRONMENTAL MANAGEMENT
·
2025
·
IF 8.4
Chengqi Feng,Anran Li,Yuxin Zhu,Yan Lei,Chenkai Jin,Juncheng Huang,Haining Na,Jin Zhu
Polluted water poses a significant threat to human health and ecological balance, necessitating the development of efficient and cost-effective water purification technologies. This study synthesized a composite photocatalytic material (CMF@Fe x O y -CN) using a microwave radiation synchrotron cooling technique. This material incorporates iron oxide-doped g-C 3 N 4 and in-situ micro-fibrillated cellulose, exhibiting high dispersion stability and magnetic recyclability. The material demonstrates a bandgap energy ( E g ) of 2.69 eV. Remarkably, 25 mg/20 mL of CMF@Fe x O y -CN (with 40 wt% Fe x O y -CN loading) achieved a 97.9 % degradation of Rhodamine B (Rh B) within 1 h. Even after 10 cycles, the degradation efficiency remained high at 89.4 %. The superoxide radical (·O 2 − ) played a critical role in Rh B degradation, facilitated by the stable dispersion of CMF. The issue of low photocatalytic efficiency, often caused by poor dispersion of photocatalysts, was addressed through the in-situ micro-fibrillation of cellulose, offering a green and economical solution. This study provides a theoretical foundation for applying photocatalysis in water purification.
研究领域:
环境科学
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材料科学
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化学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
RSC Advances
·
2019
·Vol. 9
·期 26
·15033-15041
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IF 3.049
Ya Gao,Yongjie Zheng,Jixing Chai,Jingzhi Tian,Tao Jing,Deqing Zhang,Junye Cheng,Huiqing Peng,Bin Liu,Guangping Zheng
Effective separation and rapid transfer of photogenerated electron–hole pairs are key features of photocatalytic materials with high catalytic activity, which could be achieved in co-catalysts. It is reported that the two-dimensional (2D) MoS2 is a promising co-catalyst due to its unique semi-conductive properties and graphene-like layered structure. However, the application of MoS2 as a co-catalyst is limited by its poor electrical conductivity. On the other hand, it is worth noting that TiO2 possesses reactive crystal facets, which is one of the dominant mechanisms for the separation of photogenerated electron–hole pairs. In this work, we prepared MoS2/RGO hybrids as co-catalysts which were doped to TiO2 with highly reactive {001} planes via the hydrothermal method. It was found that the {001}-TiO2/MoS2/RGO photocatalysts with 7 wt% MoS2/RGO co-catalyst show the highest photodegradation activity for the degradation of Rh B under visible light irradiation (λ > 400 nm), which could result from the synergy of the effective separation of electron–hole pairs by the {001} facets in TiO2 and the rapid transfer of electron–hole pairs in MoS2/RGO. The results show that the {001}-TiO2/MoS2/RGO hybrid is a low-cost and stable photocatalyst for the effective degradation of Rh B under visible light.
研究领域:
材料科学
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环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2025
·Vol. 36
·期 22
·1-15
·
IF 2.8
Zhou Hengqing,Li Xiao,Gao Guoqi,Sun Huajun,Liu Xiaofang
BiOBr/PVDF composite films with different precursor doping amounts were successfully prepared by in situ deposition phase conversion technology. The physicochemical properties of the composite films were analyzed in detail, and their piezoelectric-photocatalytic performance was systematically investigated. The experimental results showed that BP-0.8 (with a doping amount of 0.8 mmol for the BiOBr precursor) exhibited the best catalytic performance. Under the synergistic effect of visible light irradiation and ultrasonic vibration, the degradation rate of BP-0.8 for 50 mL of 40 mg/L Rhodamine B (Rh B) solution within 60 min could reach 96.73%, and the apparent reaction rate constant (k) of this sample was 0.06198 min⁻ 1 . It was 3.81 times and 27.06 times that of photocatalysis alone and piezoelectric catalysis alone, respectively. The radical capture experiment proved that the main active groups involved in the reaction were h⁺ and ·OH, and the mechanism of piezoelectric photocatalysis of BiOBr/PVDF composite thin films was proposed. In addition, compared with powder catalysts, flexible BiOBr/PVDF membranes were easier to recycle, did not require complex treatment, and still maintained good catalytic activity after ten cycles of testing. This work demonstrated the contribution of the piezoelectric effect to photocatalytic water purification and provided a promising strategy to utilize solar and mechanical energy.
研究领域:
材料科学
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环境工程
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催化化学
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2022
·
IF 9.136
Yuzhe Cao,Xunkai Zhu,Zejuan Ni,Bo Ge,Wei Li,Guina Ren,Xiao Miao,Xin Shao,Cancan Liu
Freshwater has become a rare resource on account of population increase and environmental pollution. At present, most the solar-driven interfacial evaporators used for water polluted by organic solvents and dyes have an outstanding nature of clean water production due to their special design. However, its downside is that contaminants remaining in the residual polluted water cannot be removed. Herein, a device applied to water polluted by organic solvents and dyes is formed by a hydrogel-based interfacial evaporator (PVA hydrogel/CNTs) and non-wetting fabric. The photodegradation efficiency of the non-wetting fabric is 95.7% for Rh B dye after five cycles. Meanwhile, the organic solvents including toluene, cyclohexane and so on are cleared through the non-wetting fabric. Importantly, the device presents a clean water production rate of 1.73 kg·m −2 ·h −1 under 1 sun illumination and it has a freshwater produce rate of 1.63 kg·m −2 ·h −1 after 6 h of desalination experiments. Furthermore, the device displays the performance of salt resistance in a 3 h NaCl dissolution experiment. A new strategy is provided for interfacial water evaporation technology used for water dyed by organic solvents and dyes purification and has a great application potential.
研究领域:
材料科学
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）