COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2022
·
IF 5.518
Mengnan Nie,Chao Zhou,Weiwei Feng,Changhui Xin,Xin Yu,Qian Li
Self-doped Ti 3+ -TiO 2 and amorphous ZnS layers-coated Ti 3+ -TiO 2 nanostructures were successfully fabricated for via a calcination-ultrasonic synthesis strategy for organic pollutant degradation under visible-light illumination. The experimental results revealed that the synthesized Ti 3+ -TiO 2 clusters displayed efficient visible-light absorption and photocatalytic performance. It was also found that amorphous ZnS layers were formed on the coral-like Ti 3+ -TiO 2 clusters via an ultrasonic synthesis method, and the strongly combined interfaces greatly boosted the charge separation between ZnS layers and self-doped Ti 3+ -TiO 2 clusters. The synthesized Ti 3+ -TiO 2 @ZnS-15% heterojunction presented the highest photocatalytic activity with a rate constant of 0.03197 min −1 , approximately 9.87 times of commercial TiO 2 . In addition, the prepared Ti 3+ -TiO 2 @ZnS composites also exhibited highly boosted photocatalytic performance towards ciprofloxacin and tetracycline degradation under visible-light illumination compared with those of commercial TiO 2 , Ti 3+ -TiO 2 , and ZnS samples. Finally, the norfloxacin degradation pathways and visible-light photocatalytic mechanism over nanostructured Ti 3+ -TiO 2 @ZnS heterojunctions were suggested.
研究领域:
材料科学
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环境科学
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化学
✓ 已验证
产品关联
DOI
高影响因子
MATERIALS RESEARCH BULLETIN
·
2018
·
IF 2.873
Tianyu Zhao,Zipeng Xing,Ziyuan Xiu,Zhenzi Li,Liyan Shen,Yan Cao,Mengqiao Hu,Shilin Yang,Wei Zhou
CdS quantum dots (QDs)/Ti 3+ -TiO 2 nanobelts heterojunctions as 0D/1D architectures are fabricated through hydrothermal-chemical bath deposition combine with in-situ solid-state chemical reduction approach. The CdS QDs of ∼7 nm are loaded on TiO 2 nanobelts with width of 50–300 nm and several micrometers long, and the heterojunctions are formed efficiently. The prepared heterojunctions exhibit excellent photocatalytic performance for complete removal of methylene blue (∼99%) and hydrogen production efficiency (∼480.6 μmol h −1 ) under visible light irradiation, which are as high as 2 and 23 times than that of pristine TiO 2 nanobelts. The enhancement is attributed to the Ti 3+ self-doping and CdS QDs extend the photoresponse to visible light region and the formation of heterojunctions favor the spatial separation of photogenerated charge carriers. Therefore, the high-efficient 0D/1D heterojunction composites have potential applications in the field of environment and energy.
研究领域:
材料科学
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环境科学
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能源科学
✓ 已验证
产品关联
DOI
高影响因子
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
·
2024
·
IF 4.2
Min Yuan,Ke Huang,Dongqing Dai,Hongfei Yin,Wei Zhao,Yixin Jiang,Yahui Feng
The integration of heterogeneous photocatalysts has emerged as a promising approach to boost the effectiveness of photocatalytic reactions for hydrogen evolution. In this study, we explore the synergistic effects of Ti 3+ -TiO 2 /P-doped g-C 3 N 4 heterojunctions on the enhancement of visible light-induced hydrogen generation efficiency. The photocatalytic hydrogen evolution performance of the as-prepared TPCN100 (280.38 μmol g −1 h −1 ) surpasses that of pristine P-doped g-C 3 N 4 (34.89 μmol g −1 h −1 ) and Ti 3+ -TiO 2 (39.71 μmol g −1 h −1 ) by factors of 8.0 and 7.1 respectively. Through a comprehensive investigation of the structural, electronic, and photocatalytic properties, the underlying mechanisms accountable for the observed enhancement in efficiency within the heterojunction system were elucidated. Based on the in-situ X-ray photoelectron spectrometer (XPS) examination, measurement of band edge, and electron paramagnetic resonance (EPR) analysis, the S-scheme photocatalytic mechanism was proposed. The integration of Ti 3+ -TiO 2 and P-doped g-C 3 N 4 offers new insights into the design of advanced photocatalytic materials for sustainable energy applications.
研究领域:
材料科学
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能源化学
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2022
·
IF 5.518
Wenjing Shen,Dandan Xiang,Junnan Yang,Yanting Tang,Changhui Xin,Quanhui Guo,Xin Yu
In this work, beta zeolite supported Ti 3+ -TiO 2 /CdS heterojunction was prepared for photodegradation of tetracycline under visible-light irradiation, and zeolite served as a support for the high dispersions of the Ti 3+ -TiO 2 nanoparticles . The obtained zeolite/Ti 3+ -TiO 2 /CdS heterojunction showed a relatively high surface areas of approximately 63.2 m 2 g −1 , much higher than those of the prepared Ti 3+ -TiO 2 /CdS (27.1 m 2 g −1 ), Ti 3+ -TiO 2 (36.5 m 2 g −1 ), and CdS (31.1 m 2 g −1 ), strongly demonstrating the significant of zeolite for high dispersion of the Ti 3+ -TiO 2 /CdS composite. Besides, the experimental results also showed that the photocatalytic degradation efficiency could reach 78 % in 3 min for the zeolite/Ti 3+ -TiO 2 /CdS heterojunction, and the corresponding rate constant was as high as 0.788 min −1 , which was 26.90 times that of pristine Ti 3+ -TiO 2 , 2.24 times of pristine CdS , and 2.04 times of the Ti 3+ -TiO 2 /CdS composite, mainly because of the supporting effects of zeolite and the formation of Ti 3+ -TiO 2 /CdS heterostructure for highly enhanced charge separation. In addition, the trapping experiment revealed that the main reactive species involved in tetracycline degradation were attributed to the photo-generated holes and ⸱O 2 - species.
研究领域:
环境科学
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材料科学
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化学
✓ 已验证
DOI
高影响因子
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
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2023
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IF 4
Jiawei Zhao,Bin Wang,Yaru Zhao,Mingming Hou,Changhui Xin,Qian Li,Xin Yu
Strong visible-light absorption and high surface areas contribute to high-perform semiconductor photocatalysis . This work aims to fabricate self-doped Ti 3+ -TiO 2 microspheres and dye sensitized self-doped Ti 3+ -TiO 2 composites with high surface areas and visible-light absorption via one-pot solvothermal strategy for highly enhanced photocatalytic tetracycline degradation under visible-light irradiation. The experimental results showed that the obtained Ti 3+ -TiO 2 microspheres showed enhanced visible-light capture capacity and a larger surface area of 204.9 m 2 g −1 . Besides, the obtained Eosin Y/Ti 3+ -TiO 2 composites showed efficient visible-light absorption and highly boosted photocatalytic performance towards tetracycline degradation. The highest rate constant for Eosin Y/Ti 3+ -TiO 2 -9% composite reached as high as 0.06657 min −1 , approximately 8.09 times that of commercial TiO 2 , strongly demonstrating the significant roles of dye sensitization. Finally, a reasonable dye-sensitization visible-light photocatalytic mechanism was suggested.
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
JOURNAL OF CATALYSIS
·
2017
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IF 6.844
Siyu Tan,Zipeng Xing,Jiaqi Zhang,Zhenzi Li,Xiaoyan Wu,Jiayi Cui,Junyan Kuang,Qi Zhu,Wei Zhou
Ti 3+ self-doped TiO 2 /g-C 3 N 4 mesostructured nanosheets heterojunctions (Ti 3+ -TiO 2 /Meso-g-C 3 N 4 ) have been prepared via calcination-sonication assisted method using amino cyanamide as precursors, combined with a solid-state chemical reduction method. The Ti 3+ -TiO 2 /Meso-g-C 3 N 4 heterojunctions with narrow band gap of ∼2.21 eV possess relative high surface area of ∼73.8 m 2 g −1 , and large pore size of ∼10 nm. Remarkably, the Ti 3+ -TiO 2 /Meso-g-C 3 N 4 heterojunctions exhibit excellent visible-light-driven photocatalytic activity for degradating phenol in wastewaters. The photocatalytic hydrogen production rate of Ti 3+ -TiO 2 /Meso-g-C 3 N 4 heterojunctions rise to ∼290.2 μmol h −1 g −1 , which is about 4 and 14 times higher than that of the bare Meso-g-C 3 N 4 and TiO 2 , respectively. The enhanced photocatalytic activity may be ascribed to the synergetic effect of the mesoporous structure providing sufficient surface active sites, and Ti 3+ self-doping and the formed heterojunctions promoting the spatial separation of photogenerated electron-hole pairs.
研究领域:
材料科学
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环境科学
✓ 已验证
DOI
高影响因子
RSC Advances
·
2026
·Vol. 16
·期 11
·10243-10254
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IF 6.1
Wenhao Liu,Yanfeng Zhu,Zhihao Liu,Jianxia Gou
Marine corrosion poses a critical threat to the safety of offshore oil and gas facilities. To address the intrinsic drawbacks of pristine TiO2, ZnS/CdS/Ti3+-TiO2 nanotube composites were rationally fabricated via a synergistic strategy combining electrochemical anodization and successive ionic layer adsorption and reaction (SILAR) techniques. Structural and optical characterization confirmed that the as-synthesized composites feature a well-constructed cascade band alignment, which efficiently mitigates the recombination of photogenerated electron–hole pairs. Accordingly, the optimized photoanode delivered a high photocurrent density of 279 µA cm−2. When coupled with 316 stainless steel (316 SS), the composite exhibited a pronounced photo-induced potential of −0.89 V (vs. SCE), achieving a remarkable performance enhancement over pristine TiO2. This enhanced photocathodic protection originates from the synergistic interplay between Ti3+ self-doping and the ZnS/CdS heterojunction: Ti3+ self-doping introduces abundant electron donors to enhance the electrical conductivity of the composite, whereas the ZnS/CdS heterojunction broadens the visible-light absorption range and accelerates the separation and directional migration of photogenerated charge carriers.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMOSPHERE
·
2019
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IF 5.108
Jiajie Xu,Guodong Dai,Biyu Chen,Donglin He,Yue Situ,Hong Huang
An efficient heterogeneous photocatalytic process coupling photocatalysis and Fenton-like process was carried out, where the Fenton-like cycle could be driven by self-produced H 2 O 2 rather than extra H 2 O 2 addition. It was revealed that C 3 N 4 por exhibited good performance at H 2 O 2 production in pure water, which was enhanced up to eight times than bare g-C 3 N 4 . Fenton-like cycle was constructed in Ti 3+ -TiO 2 -C 3 N 4 por as C 3 N 4 por severed as H 2 O 2 donator, while the Ti 3+ -TiO 2 was able to provide photoinduced electrons for the Fenton-like process, resulting in the generation of much more OH radical. In addition, ESR spectra were performed to confirm the promotion of the Fenton-like cycle and much more OH radical was detected in Ti 3+ -TiO 2 -C 3 N 4 por than Ti 3+ -TiO 2 -C 3 N 4 due to the great improvement in H 2 O 2 production of C 3 N 4 por. What’s more, the feasible photocatalytic mechanism of Ti 3+ -TiO 2 -C 3 N 4 por composite was also proposed.
研究领域:
环境科学
·
材料科学
✓ 已验证
DOI
PubMed
高影响因子
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
·
2023
·
IF 4.1
Tingting Du,Congzhi Hu,Yuye Li,Youyong Pang,Ming Li,Botian Liu,Ling Li,Yongping Liu,Huidan Lu,Bin Huang
This paper discusses the photocatalytic properties of Ag/Ag 3 PO 4 /Ti 3+ -TiO 2 composites. The nanostructured composites were synthesized by gas-phase hydrolysis, precipitation, and photoreduction methods. The photocatalytic performance of the photocatalysts was evaluated by degrading RhB and TC under visible light. The degradation efficiency of AT4 for RhB and TC reached 99.9 % and 78.2 % under visible light irradiation for 20 min and 2.5 min, respectively. The superior performance of AT4 is facilitated by the combined influence of the heterojunction and the SPR . The free radical capture test proved that h + and •O 2 − were the major reactive groups, and in conjunction with UV–vis DRS curves and Mott-Schottky curves, a probable reaction mechanism was proposed.
研究领域:
材料科学
·
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）