TiO<sub>2</sub>@h-CeO<sub>2</sub>: a composite yolk–shell microsphere with enhanced photodegradation activity

Yuan, Bing; Long, Yu; Wu, Longlong; Liang, Kun; He, Wen; Luo, Sha; Huo, Hongfei; Yang, Honglei; Ma, Jiantai

doi:10.1039/c6cy00466k

Cited by 32 publications

(10 citation statements)

References 61 publications

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“…With further enhancing the Ti/Ce ratio, the slope is again reduced. The photodegradation rate reached for the Ce-7Ti is higher than that of hollow core/shell CeO 2 @TiO 2 [22] and is comparable to the yolk-shell structure of TiO 2 @H-CeO 2 reported by Yuan et al [17] showing an overall good performance. The evolution of the K values under visible light irradiation has a different trend, exhibiting an optimum for a Ti/Ce ratio of 5.…”

Section: Photocatalyst Performancesupporting

confidence: 78%

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Synergetic effect of interface and surface on photocatalytic performance of TiO2@ hollow CeO2 core–shell nanostructures

Chen

Chang

Gloter

et al. 2021

Applied Surface Science

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The photocatalytic performance of new TiO 2 /CeO 2 composites is reported and the mechanism for its enhancement with respect to bare TiO 2 and CeO 2 nanoparticles is revealed. With a two-step process, TiO 2 shells were deposited on CeO 2 hollow cores forming the composites (TiO 2 @H-CeO 2 ). With tuning the shell deposition, optical properties were engineered. The absorption range was extended to visible light and the lifetime of photoinduced electron-hole pairs were prolonged. Photo-degradation experiments indicate that the removing of 10 -5 M methylene blue by TiO 2 @H-CeO 2 was improved under both UV and visible light. The highest degradation rate constant K reached 0.023 min − 1 under visible light showing an enhancement of more than one order of magnitude as compared to solely TiO 2 or CeO 2 nanoparticles. High-resolution electron energy loss spectroscopy was utilized to investigate both surface and interface areas. It demonstrates a strong interface interaction between CeO 2 and TiO 2 after forming core-shell structure with the introduction of a nanometrical interface layer and a modification of the Ce 3+ and Ti 3+ content near the interface. The present work revealed that the photocatalytic efficiency can be improved effectively by optimizing the synergistic effect of interface through adjusting the TiO 2 deposition process.

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Section: Photocatalyst Performancesupporting

confidence: 78%

“…Among CeO 2 based composites, core-shell structures which comprises two or more kinds of substances have attracted much attention [16][17][18][19]. Chen et al [20] reported the synthesis of CeO 2 @TiO 2 core-shell composites with a facile hydrothermal method.…”

Section: Introductionmentioning

confidence: 99%

Synergetic effect of interface and surface on photocatalytic performance of TiO2@ hollow CeO2 core–shell nanostructures

Chen

Chang

Gloter

et al. 2021

Applied Surface Science

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“…To determine the energy band gap, Kubelka-Munk function is used (Yuan et al 2016). The Kubelka-Munk function F (R ? )…”

Section: Resultsmentioning

confidence: 99%

Fabricated CeO2 nanopowders as a novel sensing platform for advanced forensic, electrochemical and photocatalytic applications

Rohini

Nagabhushana

Darshan³

et al. 2017

Appl Nanosci

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In Forensic investigation, identification of various types of ridge details are essential in order to fix the criminals associated in various crimes. Even though several methods and labeling agents are available to visualize latent finger prints (LFPs) there is still simple, accurate, cost-effective, and non-destructive tool is required. In the present work, CeO 2 nanopowders (NPs) are prepared via simple solution combustion route using Tamarindus indica fruit extract as a fuel. The optimized NPs are utilized for visualization of LFPs on various surfaces by powder dusting method. Results revealed that visualized LFPs exhibit Level 3 features such as pores and ridge contours under normal light with high sensitivity and without background hindrance. The photometric characteristics of the prepared samples exhibit blue color emission and highly useful in warm light emitting diodes. The photocatalytic studies were carried out with different Methylene blue (MB) dye concentration and pH values. The obtained results reveal that the CeO 2 NPs exhibits an excellent catalytic properties which can act as a good catalytic reagent. The findings demonstrate that the prepared NPs are quite useful as a labeling agent for visualization of LFPs, efficient catalysts for dye degradation as well as solid-state lighting applications.

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“…So với TiO2 dạng hạt nano, TiO2-NTs có những tính chất ưu việt hơn trong lĩnh vực xúc tác quang. Với khả năng lưu trữ oxi, hoạt tính xúc tác quang và là chất ưa nước đặc biệt, CeO2 đã thu hút sự quan tâm đáng kể khi kết hợp với TiO2 với vai trò là một chất xúc tác quang [28]. CeO2 được biết đến nhiều nhờ tính chất oxi hóa khử của nó, cho phép chuyển đổi dễ dàng giữa hai trạng thái oxi hóa và khử (Ce 4+ và Ce 3+ ) tùy thuộc vào những điều kiện bên ngoài.…”

Section: Mở đầUunclassified

CÁC YẾU TỐ ẢNH HƯỞNG ĐẾN PHẢN ỨNG PHÂN HỦY QUANG HÓA XANH METHYLENE BẰNG HỆ XÚC TÁC CeO2-TiO2 NANOTUBES

Tuyen¹,

Dao²,

Toàn³

et al. 2018

HueUni-JNS

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Tóm tắt. Trong nghiên cứu này, sự phân hủy quang hóa xanh methylene (MB) dưới bức xạ khả kiến được tiến hành với sự có mặt của vật liệu xúc tác ống nano TiO2 pha tạp CeO2 (CeO2-TiO2-NTs). Ảnh hưởng của các yếu tố khác nhau như pH của dung dịch, nồng độ đầu của dung dịch MB, nhiệt độ nung và tỉ lệ pha tạp Ce:Ti đến khả năng xúc tác quang hóa phân hủy MB của vật liệu CeO2-TiO2-NTs cũng được khảo sát chi tiết. Kết quả cho thấy CeO2-TiO2-NTs@0,1 (tỉ lệ mol Ce:Ti là 0,1) nung ở 550 °C có hoạt tính xúc tác quang tốt nhất, phân hủy gần 97 % MB (C0 = 15 ppm, pH = 6,5) sau hơn 2 h chiếu xạ.Từ khóa: ống nano TiO2 pha tạp CeO2, ánh sáng khả kiến, hoạt tính xúc tác quang

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TiO₂@h-CeO₂: a composite yolk–shell microsphere with enhanced photodegradation activity

Abstract: A yolk–shell composite microsphere, TiO2@h-CeO2, has been designed, synthesized, characterized and applied in the photodegradation of methylene blue.

Cited by 32 publications

References 61 publications

Synergetic effect of interface and surface on photocatalytic performance of TiO2@ hollow CeO2 core–shell nanostructures

Synergetic effect of interface and surface on photocatalytic performance of TiO2@ hollow CeO2 core–shell nanostructures

Fabricated CeO2 nanopowders as a novel sensing platform for advanced forensic, electrochemical and photocatalytic applications

CÁC YẾU TỐ ẢNH HƯỞNG ĐẾN PHẢN ỨNG PHÂN HỦY QUANG HÓA XANH METHYLENE BẰNG HỆ XÚC TÁC CeO2-TiO2 NANOTUBES

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TiO2@h-CeO2: a composite yolk–shell microsphere with enhanced photodegradation activity

Abstract: A yolk–shell composite microsphere, TiO2@h-CeO2, has been designed, synthesized, characterized and applied in the photodegradation of methylene blue.

Cited by 32 publications

References 61 publications

Synergetic effect of interface and surface on photocatalytic performance of TiO2@ hollow CeO2 core–shell nanostructures

Synergetic effect of interface and surface on photocatalytic performance of TiO2@ hollow CeO2 core–shell nanostructures

Fabricated CeO2 nanopowders as a novel sensing platform for advanced forensic, electrochemical and photocatalytic applications

CÁC YẾU TỐ ẢNH HƯỞNG ĐẾN PHẢN ỨNG PHÂN HỦY QUANG HÓA XANH METHYLENE BẰNG HỆ XÚC TÁC CeO2-TiO2 NANOTUBES

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TiO₂@h-CeO₂: a composite yolk–shell microsphere with enhanced photodegradation activity