[1] [1] Wu H X, Zhang S J, Zhang J M, et al.. A hollow-core, magnetic, and mesoporous double-shell nanostructure: In-situ decomposition/ reduction synthesis, bioimaging, and drug-delivery properties[J]. Adv Funct Mater, 2011, 21(10): 1850-1862.

[2] [2] Sun L, Zang Y, Sun M D, et al.. Synthesis of magnetic and fluorescent multifunctional hollow silica nanocomposites for live cell imaging [J]. J Colloid Interface Sci, 2010, 350(1): 90-98.

[3] [3] Yang D M, Li C X, Lin J, et al.. Hollow structured upconversion luminescent NaYF4∶Yb3+, Er3+ nanospheres for cell imaging and targeted anti-cancer drug delivery[J]. J Biomaterials, 2013, 34(5): 1601-1612.

[4] [4] Tian G, Gu Z J, Liu X X, et al.. Facile fabrication of rare-earth-doped Gd2O3 hollow spheres with upconversion luminescence, magnetic resonance, and drug delivery properties[J]. J Phys Chem C, 2011, 115(48): 23790-23796.

[5] [5] Hu J, Chen M, Fang X S, et al.. Fabrication and application of inorganic hollow spheres[J]. Chem Soc Rev, 2011, 40(11): 5472-5491.

[6] [6] Mohapatra S, Rout S R, Narayan R, et al.. Multifunctional mesoporous hollow silica nanocapsules for targeted co-delivery of cisplatinpemetrexed and MR imaging[J]. Dalton Trans, 2014, 43(42): 15841-15850.

[7] [7] Chen Y, Chen H G, Zhang S G, et al.. Multifunctional mesoporous nanoellipsoids for biological bimodal imaging and magnetically targeted delivery of anticancer drugs[J]. Adv Funct Mater, 2011, 21(2): 270-278.

[8] [8] Zhang T R, Ge J P, Hu Y X, et al.. Formation of hollow silica colloids through a spontaneous dissolution-regrowth process[J]. Angew Chem, 2008, 120(31): 5890-5895.

[9] [9] Cheng T L, Li S G, Zhou G Y, et al.. Relation between power fraction in the core of hollow-core photonic crystal fibers and their bandgap property[J]. Chinese J Lasers, 2007, 2(2): 249-254.

[10] [10] Li B, Yang X, Xia L, et al.. Hollow microporous organic capsules[J]. Sci Rep, 2013: 3.

[11] [11] Rawolle M, Niedermeier M A, Kaune G, et al.. Fabrication and characterization of nanostructured titania films with integrated function from inorganic-organic hybrid materials[J]. Chem Soc Rev, 2012, 41(15): 5131-5142.

[12] [12] Tian G, Gu Z J, Liu X X, et al.. Facile fabrication of rare-earth-doped Gd2O3 hollow spheres with upconversion luminescence, magnetic resonance, and drug delivery properties[J]. J Phys Chem C, 2011, 115(48): 23790-23796.

[13] [13] Deng Y H, Qi D W, Deng C H, et al.. Super paramagnetic high-magnetization microspheres with an Fe3O4@SiO2 core and perpendicularly aligned mesoporous SiO2 shell for removal of microcystins[J]. J Am Chem Soc, 2008, 130(1): 28-29.

[14] [14] Cui Xiaoxia, Gao Fei, Hou Chaoqi, et al.. Synthesisi and optical properties of neodymium-doped lanthannum fluoride nano-laser materials [J]. Chinese J Lasers, 2013, 40(6): 0606003.

[15] [15] Fujishiro F, Sekimoto R, Hashimoto T. Photoluminescence properties of CuLa1 xLnxO2 (Ln: lanthanide)-intense and peculiar luminescence from Ln3+ at the site with inversion symmetry[J]. J Lumin, 2013, 133: 217-221.

[16] [16] Kang X J, Cheng Z Y, Yang D M, et al.. Design and synthesis of multifunctional drug carriers based on luminescent rattle-type mesoporous silica microspheres with a thermosensitive hydrogel as a controlled switch[J]. Adv Funct Mater, 2012, 22(7): 1470-1481.

[17] [17] Cong Y H, Wang G L, Xiong M H, et al.. A facile interfacial reaction route to prepare magnetic hollow spheres with tunable shell thickness [J]. Langmuir, 2008, 24(13): 6624-6629.

[18] [18] Yang J, Li C X, Cheng Z Y, et al.. Size-tailored synthesis and luminescent properties of one-dimensional Gd2O3∶Eu3+nanorods and microrods[J]. J Phys Chem C, 2007, 111(49): 18148-18154.

[19] [19] Jia G, Liu K, Zheng Y H, et al.. Highly uniform Gd(OH)3 and Gd2O3∶Eu3+ nanotubes: facile synthesis and luminescence properties[J]. J Phys Chem C, 2009, 113(15): 6050-6055.

[20] [20] St ber W, Fink A, Bohn E. Controlled growth of monodisperse silica spheres in the micron size range[J]. Colloid Interface Sci, 1968, 26 (1): 62-69.

[21] [21] Zhang F, Braun G B, Pallaoro A, et al.. Mesoporous multifunctional upconversion luminescent and magnetic“nanorattle”materials for targeted chemotherapy[J]. Nano Lett, 2011, 12(1): 61-67.

[22] [22] Qu X S, Yang H K, Moon B K, et al.. Preparation and photoluminescence properties of Gd2O3∶Eu3+ inverse opal photonic crystals[J]. J Phys Chem C, 2010, 114(47): 19891-19894.

[23] [23] Sun W Z, Pang R, Li H F, et al.. Synthesis and photoluminescence properties of novel red-emitting Ca14Mg2(SiO4)8∶Eu3+/Sm3+ phosphors [J]. J Rare Earths, 2015, 33(8): 814-819.

[24] [24] Li H F, Zhao R, Jia Y L, et al.. Sr1.7Zn0.3CeO4∶Eu3 + novel red- emitting phosphors: synthesis and photoluminescence properties [J]. Appl Mater Interfaces, 2014, 6(5): 3163-3169.

[25] [25] Wang Jinxian, Che Hongrui, Dong Xiangting, et al.. Fabrication and characterization of Gd2O3:Eu3+ luminescent nanofibers via electrospining [J]. Acta Optica Sinica, 2010, 2(2): 473-479.